CN105988270B - The liquid crystal on silicon optical projection system shown for 3D rendering - Google Patents

Abstract

The main purpose of the present invention is to provide a liquid crystal on silicon projection system for 3D image display. Wherein, the system includes: a silicon-based liquid crystal chip assembly, and also includes: a light source assembly for outputting the first light containing the three primary colors of light; a light splitting and combining assembly for splitting the first light containing the three primary colors of light into Three primary colors of light in one polarization state, and the three primary colors of light with the first polarization state are transmitted to the silicon-based liquid crystal chip assembly for modulation to obtain modulated light, and at the same time, the modulated light of the silicon-based liquid crystal chip assembly is combined; the polarization modulation assembly is used for Polarization modulation is performed on the combined modulated light in a time-division manner according to the modulation frequency to obtain a second light including at least two beams of light output according to time sequence; the lens is arranged in the transmission path of the second light, and is used to utilize the time sequence The output first light beam with the first polarization state and the second light beam with the second polarization state are projected to form a 3D image. By adopting the embodiment of the present invention, it is realized that a projector outputs 3D images.

Description

Liquid crystal on silicon projection system for 3D image display

technical field

The invention relates to the field of projection display, in particular to a liquid crystal on silicon projection system for 3D image display.

Background technique

With the continuous development of projection technology, 3D (3 Dimensions, namely three-dimensional) technology is becoming more and more mature and large-scale, and has been widely used in places such as movie theaters and home theaters. With the continuous development of 3D display technology (that is, stereoscopic display technology), people have higher and higher requirements on the fidelity of 3D display. The basic principle of 3D display is that people's left eye and right eye receive different images, and through the superposition of the brain, a three-dimensional display effect is formed. When watching 3D video, wear corresponding stereoscopic glasses, so that the left and right eyes receive respective images respectively.

In the prior art, users generally use 3D stereo glasses to watch 3D videos. 3D stereo glasses generally include active and passive types. The eye sees the image for the left eye, and only the right eye sees the image for the right eye at another period of time, and the switching of the glasses is synchronized with the image through the synchronous transmitter; passive glasses generally include spectrum separation glasses and polarization separation glasses, and the spectrum separation glasses The left and right spectacle lenses are coated with filters of different wavelength bands, so that the left and right eyes receive left and right eye images composed of different spectral components. Polarized separation glasses, the left and right spectacle lenses can only pass through light of a certain polarization state, and the two polarizations The states are different, generally linearly polarized light perpendicular to each other. Currently, polarization separation technology is the most widely used in 3D display field. LCOS (Liquid Crystal on Silicon) projection system is a natural polarized light processing projection system, so it has become an ideal choice for 3D projection display.

At present, LCOS projectors are used to realize 3D. Generally, two LCOS projectors are selected to project images of different polarization states, and the images of different polarization states are respectively incident on the corresponding left and right eyes, thereby realizing 3D.

As shown in Figure 1, the projection system can be two LCOS projectors, LCOS projector 1 and LCOS projector 2, wherein projector 1 includes light source 101, optical relay system 102, polarizer 103, PBS prism 104, LCOS chip 105 , analyzer 106 and projection lens 107 ; similarly, projector 2 includes light source 108 , optical relay system 109 , polarizer 110 , PBS prism 111 , LCOS chip 112 , polarization converter 113 and projection lens 114 .

Wherein, in projector 1, 101 is a light bulb or LED light source, which emits sequential red, green, and blue light, collimates through optical relay system 102, and becomes linearly polarized light (such as S light) through polarizer 103, and is incident on After the PBS prism 104 is reflected and arrives at the LCOS chip 105, it is emitted after being modulated by the LCOS chip. At this time, the polarization state becomes P light. After being transmitted through the PBS prism, it passes through the analyzer 106 and finally forms an image through the lens 107; the projector 2 and the projection system 1, the difference lies in the polarization converter 113, which converts the P light emitted by the PBS prism into S light, and finally forms an image through the lens 114. Projector 1 and Projector 2 respectively emit P-light and S-light images, and the human eye wears corresponding polarized glasses, so that one eye can only receive P-light images, and the other eye only receives S-light images, which are superimposed by the brain Finally, a 3D stereoscopic display effect is formed.

The 3D projection system in the prior art needs to be equipped with two LCOS projectors, which occupy a relatively high volume and cost. Each LCOS projector can be a single-chip LCOS projection system as shown in Figure 1 above, or a three-chip LCOS projection system, as long as the two projectors emit images with different polarization states. It should be noted that when projecting images, the two projectors must be strictly synchronized, otherwise it will cause confusion in the picture and lose the 3D effect.

It can be seen from the above that although the 3D projection system in the prior art can realize 3D, it occupies a relatively high space and costs, and it is technically difficult to keep the two projectors strictly synchronized.

Aiming at the problem of using two projectors to display 3D images in the prior art, which occupies a large space and costs high, no effective solution has been proposed yet.

Contents of the invention

The main purpose of the present invention is to provide a liquid crystal on silicon projection system for displaying 3D images, so as to solve the problem of using two projectors to display 3D images, occupying a large space and costing a lot.

In order to achieve the above object, according to an aspect of an embodiment of the present invention, a liquid crystal on silicon projection system for 3D image display is provided, the system includes: a liquid crystal on silicon chip assembly, and further includes:

The light source component is used to output the first light containing the three primary colors; the light splitting and combining component is arranged in the transmission path of the first light containing the three primary colors, and is used to divide the first light containing the three primary colors Three primary colors of light in one polarization state, and the three primary colors of light with the first polarization state are transmitted to the silicon-based liquid crystal chip assembly for modulation to obtain modulated light, and at the same time, the modulated light of the silicon-based liquid crystal chip assembly is combined; the polarization modulation assembly is arranged in In the transmission path of the combined modulated light, it is used to perform polarization modulation on the combined modulated light in a time-division manner according to the modulation frequency to obtain a second light including at least two beams of light output in time sequence, wherein at least The first light beam in the two light beams has a first polarization state, the second light beam in at least two light beams has a second polarization state, and the first light beam and the second light beam include three primary color lights; the lens is arranged on the second light transmission In the path, the first beam with the first polarization state and the second beam with the second polarization state output in time series are projected to form a 3D image; wherein, the first polarization state and the second polarization state are perpendicular to each other.

Further, the light splitting and combining component includes: a first polarizer, used to convert the first light including the three primary colors into third light with the first polarization state; the wavelength splitting component is arranged in the transmission path of the third light , for splitting the third light with the first polarization state into the first primary color light with the first polarization state, the second primary color light with the first polarization state, and the third primary color light with the first polarization state transmitted along different optical paths primary color light.

Further, the wavelength splitting component includes: a first dichroic mirror, arranged in the transmission path of the third light, for reflecting the first split light in the third light to obtain the first primary color light with the first polarization state, and transmitting the second dichroic mirror The second light splitting in the three light; reflector, arranged in the transmission path of the first primary color light with the first polarization state, for reflecting the first primary color light with the first polarization state; the second dichroic mirror, set In the transmission path of the second light split, it is used to transmit the second primary color light with the first polarization state in the second light split, and reflect the third primary color light with the first polarization state in the second light split.

Further, the light splitting and combining component also includes: a polarization splitting and combining component, which is arranged in the rear end optical path of the wavelength splitting component, and is used to convert the first primary color light with the first polarization state and the first polarized light transmitted along different optical paths The second primary color light with the first polarization state and the third primary color light with the first polarization state are split into the liquid crystal on silicon chip assembly; it is also used to combine the modulated light emitted by the liquid crystal on silicon chip assembly into one path.

Further, the polarization beam splitting and combining component includes: a first polarization beam splitting and combining prism, arranged in the transmission path of the first primary color light having the first polarization state, and used to reflect the first primary color light having the first polarization state to The liquid crystal-on-silicon chip assembly transmits the modulated light emitted by the liquid crystal-on-silicon chip assembly; the second polarization light-splitting and light-combining prism is arranged in the transmission path of the second primary color light with the first polarization state, and is used to transmit the light with the first polarization state. The second primary color light of a polarization state is reflected to the liquid crystal on silicon chip assembly, and transmits the modulated light emitted by the liquid crystal on silicon chip assembly; the third polarization light splitting and light combining prism is arranged in the transmission path of the third primary color light for The reflected third primary color light is reflected to the liquid crystal on silicon chip assembly, and transmits the modulated light emitted by the liquid crystal on silicon chip assembly.

Further, the liquid crystal on silicon chip assembly includes: a first liquid crystal on silicon chip, arranged in the transmission path of the first primary color light with the first polarization state, for converting the first primary color light with the first polarization state based on the 3D source image signal The primary color light is modulated into first modulated light with a second polarization state; the second liquid crystal on silicon chip is arranged in the transmission path of the second primary color light with the first polarization state, and is used to have the first modulated light based on the 3D source image signal The second primary color light with the polarization state is modulated into the second modulated light with the second polarization state; the third silicon-based liquid crystal chip is arranged in the transmission path of the third primary color light with the first polarization state, and is used for 3D source image based on The signal modulates the third primary light having the first polarization state into third modulated light having the second polarization state. Wherein, the modulated light includes the first modulated light, the second modulated light and the third modulated light, the modulation frequency is synchronized with the alternating frequency of the 3D source image signal, and the alternating frequency is that the left-eye image signal of the 3D source image signal is the same as the right-eye image signal. alternating frequency.

Further, the polarization light splitting and combining component also includes: a three-color light combining prism, which is arranged at the intersection of the transmission paths of the first modulated light, the second modulated light and the third modulated light, for combining the first modulated light, the second modulated light The light and the third modulated light are combined to obtain the combined modulated light.

Further, the light source assembly includes: an excitation light source, used to emit excitation light; a color wheel, arranged in the transmission path of the excitation light, on which a wavelength conversion material is arranged, and the color wheel emits light containing three primary colors under the irradiation of the excitation light first light.

Further, the excitation light is blue light, the wavelength conversion material is yellow light wavelength conversion material, and the first light containing three primary colors includes blue light not absorbed by the wavelength conversion material and yellow light converted from blue light to yellow light by the wavelength conversion material.

In order to achieve the above object, according to another aspect of the embodiment of the present invention, a liquid crystal on silicon projection system for 3D image display is provided, the system includes: a liquid crystal on silicon chip assembly, and also includes: a light source assembly for timing Outputting a first light beam and a second light beam, the first light beam and the second light beam respectively include at least two primary color lights, and the combined light of the first light beam and the second light beam includes three primary color lights. The light splitting component is arranged in the transmission path of the first light beam and the second light beam output in time sequence, and is used to divide the first light beam into the first primary color light with the first polarization state, the second primary color light with the first polarization state, and the second primary color light with the first polarization state. The second primary color light of the second polarization state, and respectively transmit the first primary color light with the first polarization state, the second primary color light with the first polarization state and the second primary color light with the second polarization state to the liquid crystal on silicon The chip component is modulated to obtain the first modulated sub-beam, the second modulated sub-beam and the third modulated sub-beam; it is also used to divide the second beam into the first primary color light with the first polarization state and the third primary color light with the first polarization state. the primary color light and the third primary color light with the second polarization state, and respectively transmit the first primary color light with the second polarization state, the third primary color light with the first polarization state and the third primary color light with the second polarization state Modulate to the liquid crystal on silicon chip assembly to obtain the first modulated sub-beam, the fourth modulated sub-beam and the fifth modulated sub-beam. The light-modulating component is arranged in the transmission path of the modulated sub-beam modulated by the silicon-based liquid crystal chip component, and is used to perform polarization modulation on the first modulated sub-beam in a time-sharing manner according to the modulation frequency to obtain the primary color modulation output according to the time sequence The light beam, the primary color modulated light beam, the second modulated sub-beam and the third modulated sub-beam are combined to obtain a third light beam, the primary color modulated light beam, the fourth modulated sub-beam and the fifth modulated sub-beam are combined to obtain a fourth light beam, the third light beam and The fourth light beams are combined to obtain the second light. The lens is arranged in the transmission path of the second light, and is used for forming a 3D image by projecting the third light beam and the fourth light beam output in time sequence. Wherein, the first polarization state and the second polarization state are perpendicular to each other.

Further, the beam splitting assembly includes: a first dichroic mirror, arranged in the rear end optical path of the light source assembly, for reflecting the first split light in the first light beam and transmitting the second split light in the first light beam at the first light sequence. Light splitting; it is also used to reflect the first split light in the first light and transmit the third split light in the first light in the second light sequence; the first polarizer is arranged in the transmission path of the first split light for the second split light The first light sequence and the second light sequence transform the third split light into the first primary color light with the first polarization state. The polarization beam splitting component is arranged in the rear optical path of the first dichroic mirror and the first polarizer, and is used for splitting the second split light into the second primary color light with the first polarization state and the second primary color light with the second polarization state transmitted along different optical paths. the second primary color light with the polarization state, and transmit the first primary color light with the first polarization state, the second primary color light with the first polarization state, and the second primary color light with the second polarization state transmitted along different optical paths to Liquid crystal on silicon chip assembly; it is also used to divide the third split light into the third primary color light with the first polarization state and the third primary color light with the second polarization state transmitted along different optical paths, and divide the light with the third primary color transmitted along different optical paths The first primary color light of the first polarization state, the second primary color light of the first polarization state and the second primary color light of the second polarization state are split into the liquid crystal on silicon chip assembly.

Further, the polarization beam splitting component includes: a first polarization beam splitter prism, which is arranged in the transmission path of the first primary color light with the first polarization state, and is used to convert the light with the first polarization state into the first light sequence and the second light sequence The first primary color light is reflected to the liquid crystal-on-silicon chip assembly, and transmits the first modulated sub-beam emitted by the liquid crystal-on-silicon chip assembly; the second polarization beam splitter is arranged in the transmission path of the second light split and the third light split, for In the first light sequence, the second split light is divided into the second primary color light with the first polarization state and the second primary color light with the second polarization state, and the second primary color light with the first polarization state and the second primary color light with the second polarization state The second primary color light of the polarization state is sent to the liquid crystal on silicon chip assembly, and transmits the second modulated sub-beam and the third modulated sub-beam emitted by the silicon-based liquid crystal chip assembly; It is the third primary color light with the first polarization state and the third primary color light with the second polarization state, and emits the third primary color light with the first polarization state and the third primary color light with the second polarization state to the silicon base The liquid crystal chip assembly transmits the fourth modulated sub-beam and the fifth modulated sub-beam emitted by the liquid crystal on silicon chip assembly.

Further, the liquid crystal on silicon chip assembly includes: a first liquid crystal on silicon chip, arranged in the transmission path of the first primary color light, for the first light sequence and the second light sequence, based on the 3D source image signal will have the first The first primary light of polarization state is modulated into a first modulated sub-beam having a second polarization state. The second liquid crystal on silicon chip is arranged in the transmission path of the second primary color light with the first polarization state and the third primary color light with the first polarization state, and is used for the first light timing based on the 3D source image signal will have The second primary color light with the first polarization state is modulated into a second modulated sub-beam with the second polarization state; and is also used to modulate the third primary color light with the first polarization state based on the 3D source image signal at the second light sequence into A fourth modulated sub-beam having a second polarization state. The third liquid crystal on silicon chip is arranged in the transmission path of the second primary color light with the second polarization state and the third primary color light with the second polarization state, and is used for the first light timing based on the 3D source image signal will have The second primary color light with the second polarization state is modulated into a third modulated sub-beam with the first polarization state; it is also used to modulate the third primary color light with the second polarization state into the second light sequence based on the 3D source image signal. A fifth modulated sub-beam having a first polarization state. Wherein, the modulation frequency is synchronized with the alternating frequency of the 3D source image signal, and the alternating frequency is the frequency at which the left-eye image signal and the right-eye image signal of the 3D source image signal alternate.

Further, the modulation light combination component includes: a first polarization modulation device, arranged in the rear optical path of the first polarization beam splitter, for outputting the first modulated sub-beam with the second polarization state in the first light sequence; The two beams sequentially output the first modulated sub-beam with the first polarization state. The second dichroic mirror is arranged at the intersection of the optical path of the second polarization beam splitter prism and the light emitted by the first polarization modulation device, and is used to convert the first modulated sub-beam with the second polarization state and the first modulated sub-beam with the first light sequence in the first light sequence. The second modulated sub-beam with two polarization states and the third modulated sub-beam with the first polarization state are combined into a third light beam; it is also used to combine the first modulated sub-beam with the first polarization state, Combining the fourth modulated sub-beam with the first polarization state and the fifth modulated sub-beam with the second polarization state into a fourth light beam, and combining the third light beam and the fourth light beam into a second light beam.

Further, the light source assembly includes: an excitation light source for emitting excitation light; a color wheel arranged in the transmission path of the excitation light, at least two kinds of wavelength conversion materials are arranged on the color wheel, and the color wheel is sequentially illuminated by the excitation light A first light beam and a second light beam are output, wherein the modulation frequency coincides with the alternating frequency of at least two wavelength conversion materials of the color wheel.

Further, the excitation light is blue light, and the at least two wavelength conversion materials include green light wavelength conversion material and red light wavelength conversion material, wherein the first light beam includes blue light not absorbed by the green light wavelength conversion material and the green light wavelength conversion material will Green light converted from blue light; the second light beam includes blue light not absorbed by the red wavelength conversion material and red light converted from blue light by the red wavelength conversion material.

According to an embodiment of the invention, the polarization light splitting and combining component can split the first light output by the light source component to obtain three primary colors, and then modulate the three primary colors respectively to obtain the first polarization state and the second polarization state output in accordance with time sequence. The second light is imaged through the lens to display 3D images with the first polarization state and the second polarization state, without using two projectors to respectively project the P polarization state image and the S polarization state image, in the structure On the one hand, the above-mentioned embodiment of the present invention adopts one projector to output the projected P polarization state image and S polarization state image alternately in time sequence, the structure is simple, saves a lot of cost and space, and avoids the need for two projectors to be synchronized. question. The present invention solves the problem of using two projectors to display 3D images in the prior art which occupies a large space and costs high, realizes the effect that one projector outputs 3D images, has a simple structure, and saves a lot of cost and space.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

FIG. 1 is a schematic structural diagram of a projection system in the prior art;

2 is a schematic diagram of a liquid crystal on silicon projection system for 3D image display according to an embodiment of the present invention; and

Fig. 3 is a schematic diagram of a fluorescent pink segment on an optional color wheel according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of an optional output spectrum of the first light according to an embodiment of the present invention;

5 is a schematic diagram of an optional liquid crystal on silicon projection system according to an embodiment of the present invention;

Fig. 6 is a schematic diagram corresponding to the modulation frequency of an optional polarization modulation device and the alternating frequency of the 3D source image signal according to an embodiment of the present invention;

7 is a schematic diagram of an optional liquid crystal on silicon projection system for 3D image display according to an embodiment of the present invention;

Fig. 8 is a schematic diagram of another optional fluorescent pink segment on the color wheel according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of another optional liquid crystal on silicon projection system according to an embodiment of the present invention; and

FIG. 10 is a schematic diagram of a timing sequence for processing light on an optional liquid crystal on silicon chip according to an embodiment of the present invention.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

FIG. 2 is a schematic diagram of a liquid crystal on silicon projection system for 3D image display according to an embodiment of the present invention. As shown in FIG. 2 , the projection system includes: a light source assembly 10 , a light splitting and combining assembly 30 , a liquid crystal on silicon chip assembly 50 , a polarization modulation assembly 70 , and a lens 90 .

Wherein, the light source assembly 10 is configured to output first light including three primary colors of light.

The light splitting and combining component 30 is arranged in the transmission path of the first light containing the three primary color lights, and is used to split the first light containing the three primary color lights into the three primary color lights having the first polarization state, and will have the first polarization state The three primary colors of light are transmitted to the liquid crystal on silicon chip assembly for modulation to obtain modulated light, and at the same time, the modulated light of the liquid crystal on silicon chip assembly 50 is combined.

The polarization modulation component 70 is arranged in the transmission path of the combined modulated light, and is used to perform polarization modulation on the combined modulated light in a time-division manner according to the modulation frequency, to obtain at least two beams of light output in accordance with time sequence The second light, wherein the first light beam of the at least two light beams has a first polarization state, the second light beam of the at least two light beams has a second polarization state, and the first light beam and the second light beam include three primary color lights.

The lens 90 is arranged in the transmission path of the second light, and is used to form a 3D image by projecting the first light beam with the first polarization state and the second light beam with the second polarization state output in time sequence; wherein, the first polarization state and the second polarization state The two polarization states are perpendicular to each other.

According to the embodiment of the present invention, the light source component outputs the first light including the three primary colors of light, and then passes through the light splitting and combining component, the liquid crystal on silicon chip component and the polarization modulation component to obtain the second light including at least two beams of light output in time sequence, The second light is imaged through the lens, and the time-sequential output of the first light beam with the first polarization state and the second light beam with the second polarization state are projected to form a 3D image. Through the above-mentioned embodiments of the present invention, there is no need to use two projectors to project the P polarization state image and the S polarization state image respectively, and in terms of structure, one projector can output alternately projected P polarization state images and S polarization state images in time series The image has a simple structure, which saves a lot of cost and space, and avoids the problem that two projectors need to be synchronized. The present invention solves the problem of using two projectors to display 3D images in the prior art which occupies a large space and costs high, realizes the effect that one projector outputs 3D images, has a simple structure, and saves a lot of cost and space.

The light splitting and combining component 30 in the above-mentioned embodiment of the present invention may include: a first polarizer 206 for converting the first light including the three primary colors into third light having a first polarization state; the wavelength splitting component is arranged on In the transmission path of the third light, it is used to divide the third light with the first polarization state into the first primary color light with the first polarization state, the second primary color light with the first polarization state, and the second primary color light with the first polarization state, which are transmitted along different optical paths. The third primary light of the first polarization state.

The first light including the three primary colors can be converted into the three primary colors with the first polarization state by the light splitting and combining components.

Specifically, the wavelength splitting component includes: a first dichroic mirror 207, arranged in the transmission path of the third light, for reflecting the first split light in the third light to obtain the first primary color light with the first polarization state, and transmitting The second split light in the third light; reflector 208, arranged in the transmission path of the first primary color light with the first polarization state, for reflecting the first primary color light with the first polarization state; the second dichroic mirror 211. Set in the transmission path of the second light split, for transmitting the second primary color light with the first polarization state in the second light split, and reflecting the third primary color light with the first polarization state in the second light split.

In the above-mentioned embodiments of the present invention, the light splitting and combining component may further include: a polarization splitting and combining component, which is arranged in the rear end optical path of the wavelength splitting component, and is used to convert the first The primary color light, the second primary color light with the first polarization state, and the third primary color light with the first polarization state are split into the liquid crystal on silicon chip assembly; it is also used to combine the modulated light emitted by the liquid crystal on silicon chip assembly into one path.

Specifically, the polarization light splitting and combining component may include: a first polarization light splitting and combining prism 209, arranged in the transmission path of the first primary color light having the first polarization state, for combining the first primary color light having the first polarization state Reflect to the liquid crystal on silicon chip assembly, and transmit the modulated light emitted by the liquid crystal on silicon chip assembly; the second polarization light splitting and light combining prism 214 is arranged in the transmission path of the second primary color light with the first polarization state, and is used to transmit the modulated light The second primary color light with the first polarization state is reflected to the liquid crystal on silicon chip assembly, and transmits the modulated light emitted by the liquid crystal on silicon chip assembly; the third polarization light splitting and combining prism 212 is arranged in the transmission path of the third primary color light , used to reflect the reflected third primary color light to the liquid crystal on silicon chip assembly, and transmit the modulated light emitted from the liquid crystal on silicon chip assembly.

In the above embodiments of the present invention, the liquid crystal on silicon chip assembly may include: a first liquid crystal on silicon chip 210, arranged in the transmission path of the first primary color light having the first polarization state, for The first primary color light with the first polarization state is modulated into the first modulated light with the second polarization state; the second liquid crystal on silicon chip 215 is arranged in the transmission path of the second primary color light with the first polarization state, for Based on the 3D source image signal, the second primary color light with the first polarization state is modulated into the second modulated light with the second polarization state; the third liquid crystal on silicon chip 213 is arranged on the third primary color light with the first polarization state In the transmission path, the third primary color light with the first polarization state is modulated into the third modulated light with the second polarization state based on the 3D source image signal. Wherein, the modulated light includes the first modulated light, the second modulated light and the third modulated light, the modulation frequency is synchronized with the alternating frequency of the 3D source image signal, and the alternating frequency is that the left-eye image signal of the 3D source image signal is the same as the right-eye image signal. alternating frequency.

It should be further explained that the polarization light splitting and light combining component may also include: a three-color light combining prism 216, which is arranged at the intersection of the transmission paths of the first modulated light, the second modulated light and the third modulated light, and is used to combine the first modulated light The light, the second modulated light, and the third modulated light are combined to obtain the combined modulated light.

According to the above-mentioned embodiments of the present invention, the polarization modulation component may include: a first polarization modulation device 217, which is arranged in the transmission path of the combined modulated light, and is used to modulate the combined light in a time-division manner according to the modulation frequency. The light is subjected to polarization modulation to obtain second light including at least two beams of light output in time sequence.

Optionally, the light source assembly in the above-mentioned embodiments of the present invention may include: an excitation light source for emitting excitation light; a color wheel arranged in the transmission path of the excitation light, and a wavelength conversion material is arranged on the color wheel, and the color wheel is arranged on the excitation light Under the irradiation of light, the first light including the three primary colors is emitted.

Specifically, the excitation light is blue light, the wavelength conversion material is yellow light wavelength conversion material, and the first light containing three primary colors includes blue light not absorbed by the wavelength conversion material and yellow light converted from blue light to yellow light by the wavelength conversion material.

Wherein, the excitation light source may be a semiconductor blue laser, and the excitation light may be blue excitation light. The blue excitation light excites the phosphor on the color wheel to produce blue fluorescence and yellow fluorescence.

The color wheel shown in Figure 3 can be coated with yellow phosphor powder with a pure color segment. After the blue excitation light excites the yellow phosphor powder on the color wheel, part of it is not absorbed and converted into blue fluorescence, and the other part excites yellow fluorescence. The powder produces yellow fluorescence, and the blue fluorescence and yellow fluorescence are superimposed and mixed to form white first light. The spectrum of the first light output by the color wheel is shown in FIG. 4 .

Wherein, in this embodiment, the first polarization state can be P polarization state, and the second polarization state can be S polarization state; the first primary color light is blue primary color light, the second primary color light is green primary color light, and the third primary color light is Red primary shade.

According to the above-mentioned embodiments of the present invention, the liquid crystal on silicon projection system may further include: the collecting lens 202 shown in FIG. The rod 204 is arranged on the transmission path of the first light output by the color wheel, and is used to perform homogenization treatment on the first light to obtain the first light after homogenization; the relay lens 205 is arranged on the path of the first light after homogenization On the transmission path, it is used to collimate and process the homogenized first light before inputting it into the light splitting and combining component.

The above-mentioned embodiment will be described in detail below in conjunction with Fig. 5 and Fig. 6. The excitation light source 201 as shown in Fig. 5 can adopt a semiconductor blue light laser, which is incident on the color wheel 203 coated with fluorescent powder as shown in Fig. 3 after being focused by the collecting lens 202 On the top, the color wheel is coated with a solid-color segment of yellow phosphor. After the blue excitation light excites the yellow phosphor, part of it is not absorbed and transformed, and is still blue light, and part of it excites the yellow phosphor to produce yellow fluorescence. The fluorescence of the two colors is superimposed Mixed into white light (that is, the first light in the above-mentioned embodiment), the light output by the color wheel 203 enters the square rod 204 for uniform light, is collimated by the relay lens 205, and becomes to have the first polarization after passing through the first polarizer 206 The third light of the state (for example, can be light with S polarization state), at the first dichroic mirror 207, the blue light (i.e. the first split light) is reflected, the yellow light (i.e. the second split light) is transmitted, and the blue light (i.e. the second split light) is transmitted, and the blue light (i.e. The first primary color light) arrives at the first polarization splitting and combining prism (i.e. PBS prism) 209 through reflector 208, is reflected and arrives at the first liquid crystal on silicon chip (i.e. the first LCOS chip) 210, and becomes having the first LCOS chip after being modulated The first modulated light with two polarization states (such as P-polarized light) exits and is reflected at the three-color light-combining prism (that is, the X-cube prism) 216 . Similarly, the yellow light transmitted through the first dichroic mirror 207 is divided into the second primary color light (such as green primary color light) with the first polarization state and the third primary color light with the first polarization state at the second dichroic mirror 211. Primary color light (such as red primary color light), green primary color light is transmitted, red primary color light is reflected, and the reflected red primary color light is reflected at the third PBS prism 212 and reaches the third LCOS chip 213, and becomes to have the second polarization state after being modulated The third modulated light (for example, red light with P polarization state) exits and is transmitted at the X-cube prism 216 . The green light transmitted through the second dichroic mirror 211 is reflected at the second PBS prism 214 and reaches the second LCOS chip 215, and becomes the second modulated light with the second polarization state after being modulated (such as the green light of the P polarization state. Light) emerges and is reflected at the X-cube prism. So far, the blue, red, and green primary color lights are combined at the X-cube prism, and are emitted together as P polarized light (that is, the fourth light in the above embodiment), and after passing through the first polarization modulation device 217, it becomes a time-sequential The P-polarized light and S-polarized light are imaged by the lens 218 to form time-sequenced P-polarized light images and S-polarized light images, which are sent to the two eyes of the observer respectively and superimposed by the brain to form a 3D stereoscopic display effect. The left and right eye image signals are sent to the three LCOS chips 210, 213 and 215 in time sequence, and the three LCOS chips process the corresponding primary color light. The switching of the S polarized light is the switching of the left and right eye images.

In the above embodiment, the three-chip LCOS chip structure is adopted, and the left and right eye images are switched through the polarization modulation device, so as to form 3D through superposition in time sequence. This method has a simple structure; and the excitation light is used to excite the yellow fluorescence on the color wheel. The powder can get white light, and the light efficiency is high.

Fig. 7 is a schematic diagram of an optional liquid crystal on silicon projection system for 3D image display according to an embodiment of the present invention. As shown in FIG. 7 , the system includes: a light source assembly 20 , a light splitting assembly 40 , a liquid crystal on silicon chip assembly 60 , a modulation light combining assembly 80 and a lens 100 .

The light source assembly is used to sequentially output the first light beam and the second light beam. The first light beam and the second light beam respectively include at least two primary color lights, and the combined light of the first light beam and the second light beam includes three primary color lights.

The light splitting component is arranged in the transmission path of the first light beam and the second light beam output in time sequence, and is used to divide the first light beam into the first primary color light with the first polarization state, the second primary color light with the first polarization state, and the second primary color light with the first polarization state. The second primary color light of the second polarization state, and respectively transmit the first primary color light with the first polarization state, the second primary color light with the first polarization state and the second primary color light with the second polarization state to the liquid crystal on silicon The chip component is modulated to obtain the first modulated sub-beam, the second modulated sub-beam and the third modulated sub-beam; it is also used to divide the second beam into the first primary color light with the first polarization state and the third primary color light with the first polarization state. the primary color light and the third primary color light with the second polarization state, and respectively transmit the first primary color light with the second polarization state, the third primary color light with the first polarization state and the third primary color light with the second polarization state Modulate to the liquid crystal on silicon chip assembly to obtain the first modulated sub-beam, the fourth modulated sub-beam and the fifth modulated sub-beam.

The light-modulating component is arranged in the transmission path of the modulated sub-beam modulated by the silicon-based liquid crystal chip component, and is used to perform polarization modulation on the first modulated sub-beam in a time-sharing manner according to the modulation frequency to obtain the primary color modulation output according to the time sequence The light beam, the primary color modulated light beam, the second modulated sub-beam and the third modulated sub-beam are combined to obtain a third light beam, the primary color modulated light beam, the fourth modulated sub-beam and the fifth modulated sub-beam are combined to obtain a fourth light beam, the third light beam and The fourth light beams are combined to obtain the second light.

The lens is arranged in the transmission path of the second light, and is used for forming a 3D image by projecting the third light beam and the fourth light beam output in time sequence. Wherein, the first polarization state and the second polarization state are perpendicular to each other.

According to the embodiment of the present invention, the light source assembly outputs the first light beam and the second light beam, and the first light beam and the second light beam respectively include at least two kinds of primary color lights, and then pass through the light splitting assembly, the silicon-based liquid crystal chip assembly, and the modulation light combining assembly to obtain The third light beam and the fourth light beam of the two primary color lights in two polarization states are projected to form a 3D image by using the time-sequential output of the third light beam and the fourth light beam. Through the above-mentioned embodiments of the present invention, there is no need to use two projectors to project the P polarization state image and the S polarization state image respectively, and in terms of structure, one projector can output alternately projected P polarization state images and S polarization state images in time series The image has a simple structure, which saves a lot of cost and space, and avoids the problem that two projectors need to be synchronized. The present invention solves the problem of using two projectors to display 3D images in the prior art which occupies a large space and costs high, realizes the effect that one projector outputs 3D images, has a simple structure, and saves a lot of cost and space.

It should be further explained that, through the above-mentioned embodiment, the light beam output in the same time sequence has two kinds of polarization states, including left-eye light and right-eye light, which can make the transition of light intensity perceived by the eyes more gentle and avoid the alternation of left and right eyes Fatigue from light and dark.

In the above embodiments of the present invention, the light splitting assembly may include: a first dichroic mirror 606, arranged in the rear optical path of the light source assembly, for reflecting the first split light in the first light beam at the first light sequence, Transmitting the second split light in the first light beam; also used to reflect the first split light in the first light and transmit the third split light in the first light at the second light sequence; the first polarizer 607 is arranged on the first split light In the transmission path, it is used to transform the third split light into the first primary color light with the first polarization state at the first light sequence and the second light sequence.

Optionally, the beam splitting component may also include: a polarization beam splitting component, which is arranged in the rear end optical path of the first dichroic mirror and the first polarizer, and is used to split the second split light into light beams with the first polarization transmitted along different optical paths. state of the second primary color light and the second primary color light with the second polarization state, and the first primary color light with the first polarization state, the second primary color light with the first polarization state, and the second primary color light with the first polarization state that will be transmitted along different optical paths The second primary color light with two polarization states is transmitted to the silicon-based liquid crystal chip assembly; it is also used to divide the third light into the third primary color light with the first polarization state and the third primary color light with the second polarization state transmitted along different optical paths light, and split the first primary color light with the first polarization state, the second primary color light with the first polarization state and the second primary color light with the second polarization state transmitted along different optical paths to the liquid crystal on silicon chip assembly.

Specifically, the polarization beam splitting component includes: a first polarization beam splitter prism 608, which is arranged in the transmission path of the first primary color light having the first polarization state, and is used to convert the light having the first polarization The first primary color light in the state is reflected to the liquid crystal on silicon chip assembly, and transmits the first modulated sub-beam emitted by the liquid crystal on silicon chip assembly.

The polarization beam splitting component includes: a second polarization beam splitter prism 611, arranged in the transmission paths of the second beam split and the third beam split, for splitting the second beam split into the second primary color light with the first polarization state at the time sequence of the first light and the second primary color light with the second polarization state, and emit the second primary color light with the first polarization state and the second primary color light with the second polarization state to the liquid crystal on silicon chip assembly, and transmit the liquid crystal on silicon chip assembly The outgoing second modulated sub-beam and the third modulated sub-beam; also used to divide the third split light into the third primary color light with the first polarization state and the third primary color light with the second polarization state at the second light sequence , and emit the third primary color light with the first polarization state and the third primary color light with the second polarization state to the liquid crystal on silicon chip assembly, and transmit the fourth modulated sub-beam and the fifth modulated light emitted by the liquid crystal on silicon chip assembly sub-beam.

According to the above-mentioned embodiments of the present invention, the liquid crystal on silicon chip assembly may include: a first liquid crystal on silicon chip 609, which is arranged in the transmission path of the first primary color light, and is used in the first light sequence and the second light sequence, based on 3D The source image signal modulates the first primary light having a first polarization state into a first modulated sub-beam having a second polarization state. The second liquid crystal on silicon chip 613 is arranged in the transmission path of the second primary color light with the first polarization state and the third primary color light with the first polarization state, and is used to convert the 3D source image signal based on the first light sequence The second primary color light with the first polarization state is modulated into a second modulated sub-beam with the second polarization state; and also used for modulating the third primary color light with the first polarization state based on the 3D source image signal at the second light sequence is the fourth modulated sub-beam with the second polarization state. The third liquid crystal on silicon chip 612 is arranged in the transmission path of the second primary color light with the second polarization state and the third primary color light with the second polarization state, and is used to convert the 3D source image signal based on the first light sequence The second primary color light with the second polarization state is modulated into a third modulated sub-beam with the first polarization state; it is also used to modulate the third primary color light with the second polarization state based on the 3D source image signal at the second light sequence is the fifth modulated sub-beam with the first polarization state. Wherein, the modulation frequency is synchronized with the alternating frequency of the 3D source image signal, and the alternating frequency is the frequency at which the left-eye image signal and the right-eye image signal of the 3D source image signal alternate.

Optionally, the modulation light combination component includes: a first polarization modulation device 610, which is arranged in the rear optical path of the first polarization beam splitter, and is used to output the first modulated sub-beam with the second polarization state at the first light timing; A first modulated sub-beam having a first polarization state is output at a second light timing. The second dichroic mirror 614 is arranged at the intersection of the optical paths of the second polarization splitter prism and the light emitted by the first polarization modulation device 610, and is used to convert the first modulated sub-beam with the second polarization state, The second modulated sub-beam with the second polarization state and the third modulated sub-beam with the first polarization state are combined into a third light beam; it is also used to combine the first modulated sub-beam with the first polarization state in the second light sequence Combining the light beam, the fourth modulated sub-beam with the first polarization state, and the fifth modulated sub-beam with the second polarization state into a fourth light beam, and combining the third light beam and the fourth light beam into a second light beam.

Wherein, in this embodiment, the first polarization state can be P polarization state, and the second polarization state can be S polarization state; the first primary color light is blue primary color light, the second primary color light is green primary color light, and the third primary color light is Red primary shade.

Further, the light source assembly may include: an excitation light source 601 for emitting excitation light; a color wheel arranged in the transmission path of the excitation light, at least two wavelength conversion materials are arranged on the color wheel, and the color wheel is illuminated by the excitation light The first light beam and the second light beam are output in time sequence, wherein the modulation frequency is consistent with the alternating frequency of at least two wavelength conversion materials of the color wheel.

The excitation light source in the above embodiments may be a semiconductor blue laser.

Optionally, the excitation light is blue light, and the at least two wavelength conversion materials include a green wavelength conversion material and a red wavelength conversion material, wherein the first light beam includes blue and green wavelength conversion materials that are not absorbed by the green wavelength conversion material Green light converted from blue light; the second light beam includes blue light not absorbed by the red wavelength conversion material and red light converted from blue light by the red wavelength conversion material.

The color wheel shown in Figure 8 is divided into two segments, the first color segment is coated with green phosphor, the second color segment is coated with red phosphor, and the blue excitation light is incident on the green in the first light sequence. On the phosphor powder, part of it is not absorbed and converted, and it is still blue light, and a part of it excites the green phosphor to produce green fluorescence; in the second light sequence, when the blue excitation light is incident on the red phosphor, part of it is not absorbed and converted, and it is still blue light , a part of the red fluorescent powder is excited to generate red fluorescence, so that the color wheel outputs the first beam of superimposed blue light + green light and the second beam of superimposed blue light + red light in sequence.

According to the above-mentioned embodiments of the present invention, the liquid crystal on silicon projection system may further include: a collecting lens 602 shown in FIG. 9 , which is arranged between the excitation light source and the color wheel, and is used to focus the excitation light emitted by the excitation light source into the color wheel; The square rod 604 is arranged on the transmission path of the first light output by the color wheel, and is used to perform uniform light treatment on the first light to obtain the first light after uniform light; the relay lens 605 is arranged on the first light after uniform light. On the transmission path of the first light, it is used to collimate and process the uniform first light before inputting it into the light splitting component.

Below in conjunction with Fig. 9 and Fig. 10, the above-mentioned embodiment will be described in detail. The excitation light source 601 shown in Fig. 9 can be a semiconductor blue light laser, which is incident on the fluorescent pink wheel as shown in Fig. 8 after being focused by the collecting lens 602, and the color wheel outputs The first light beam of blue light + green light and the second light beam of blue light + red light in time sequence.

Specifically, as shown in FIG. 9 , at the first light sequence, the color wheel outputs the first light beam of blue light + green light, enters the square bar 604 for uniform light, and collimates through the relay lens 605 to reach the third dichroic prism 606 , the third dichroic prism 606 reflects the first split light (i.e. blue light) and transmits the second split light (i.e. green light). After the blue light is reflected, it passes through the first polarizer 607 and becomes the first primary color with the first polarization state The light (i.e. S polarized blue light) is reflected at the first polarization beam splitter prism (i.e. PBS prism) 608, modulated by the first LCOS chip 609 to form the first modulated sub-beam with the second polarization state (e.g. P polarized light) Outgoing, modulated by the first polarization modulation device 610, still the first modulated sub-beam with the second polarization state (i.e. P-polarized blue light), reaches the second dichroic mirror 614, and the second dichroic mirror 614 reflects the blue light ; Another road green light (being the second split light) passes through the first dichroic mirror 606, and is divided into two kinds of polarized light (that is, the second primary color light with the first polarization state and the second primary color light with the second polarized light) at the second PBS prism 611. The second primary color light of the polarization state) is incident on the second LCOS chip and the third LCOS chip, wherein the second primary color light (i.e. S light green light) with the first polarization state is reflected and reaches the second LCOS chip 613, with The second primary color light of the second polarization state (i.e. P light green light) is transmitted to the third LCOS chip 612. After being modulated by two LCOS chips, the two green light polarization states are respectively deflected by 90 degrees to obtain the first polarization state The third modulated sub-beam and the second modulated sub-beam with the second polarization state are combined at the third PBS prism 611, pass through the second dichroic mirror 614, and the second dichroic mirror 614 transmits green light, thus The blue light of P light, the green light of P light and the green light of S light combine to form an image through the lens 615 .

In the second light sequence, the color wheel outputs the second light beam of blue light + red light, enters the square bar 604 for homogenization, collimates through the relay lens 605 and reaches the dichroic prism 606, and the third dichroic prism 606 reflects the second light beam. One split light (i.e. blue light), transmits the third split light (i.e. red light), after the blue light is reflected, it becomes the first primary color light (i.e. S polarized blue light) with the first polarization state through the first polarizer 607, and in the second Reflected at the PBS prism 608, after being modulated by the first LCOS chip 609, the first modulated sub-beam (that is, the P-polarized blue light) with the second polarization state emerges, and the P-polarized blue light is changed to have the second polarization state by the first polarization modulation device 610. The first modulated light of one polarization state (i.e. S polarized blue light) reaches the second dichroic mirror 614, and the second dichroic mirror 614 reflects the blue light; the other third split light (i.e. red light) passes through the first two After the dichroic mirror 606, it is divided into the third primary color light with the first polarization state and the third primary color light with the second polarization state at the third PBS prism 611, and the two kinds of polarized light are incident on the two LCOS chips, wherein, The third primary color light (i.e. S light red light) with the first polarization state is reflected to reach the second LCOS chip 613, and the third primary color light (i.e. P light red light) with the second polarization state is transmitted to the third LCOS chip 612 , after being modulated by the LCOS chip, the two red light polarization states are respectively deflected by 90 degrees, combined at the third PBS prism 611, and passed through the second dichroic mirror 614, and the second dichroic mirror 614 transmits the red light, thus The blue light of S light, the red light of P light and the red light of S light combine to form an image through the lens 615 .

In the above projection system, assuming that the left eye of the observer receives the P-light image and the right eye receives the S-light image after imaging through the lens, the light sequence processed on the three LCOS chips is shown in Figure 10, and the image output by the first light sequence It is: B left + G left + G right, and the image output by the second light sequence is: B right + R left + R right. In this system, the polarization modulation device changes P light and blue light into P light and S light sequentially, and its modulation rate is consistent with the color wheel 603 segment.

Through the above-mentioned embodiment, combining wavelength splitting and combining light with polarization splitting and combining, adopting a three-chip LCOS structure, one LCOS chip processes blue light, and outputs P-light blue light and S-light blue light sequentially, and the other two LCOS chips sequentially Green light and red light are processed, and the green light and red light are divided into two polarization states, so in two time sequences, the three primary color lights required by the left and right eyes are formed, and in the same time sequence, there are both left eye light and Right eye light, so that the eyes can perceive the transition of light intensity more smoothly, avoiding the fatigue caused by the alternating light and dark of the left and right eyes.

In the above-mentioned embodiments of the present invention, the excitation light source is a blue semiconductor laser module, which excites a two-stage segmented color wheel to generate sequential blue light + green light (cyan light) and blue light + red light (magenta light). After the system guides the light output from the color wheel to the wavelength and polarization light splitting and combining module, the blue light is separated from the green light and red light. P-light blue light, green light and red light are polarized into two LCOSs for modulation, and finally combine with blue light to enter the projection lens, thus forming a sequence of S-light blue light + S-light green light + P-light green light, P-light blue light + S light red light + P light red light, wherein the red, green, and blue of S light constitute the left eye image, and the red, green, and blue of P light constitute the right eye image, thus forming a 3D image. In this embodiment, there is no need to use two projectors to project the P-polarized image and the S-polarized image respectively; the present invention uses one projector to alternately project the P-polarized image and the S-polarized image in time series, and the structure is simple. It saves a lot of cost and space, and avoids the need to synchronize two projectors. At the same time, in other embodiments of the present invention, the combination of wavelength and polarization state is used to split light and combine light, so that there are both primary color light for the left eye and primary color light for the right eye in the same time sequence, and the transition of brightness perceived by the left and right eyes is more moderate. It eliminates the fatigue caused by the alternating light and dark of the left and right eyes, and improves the 3D quality and comfort.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or can be Integrate into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical or other forms.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (16)

1. a kind of liquid crystal on silicon optical projection system shown for 3D rendering, including liquid crystal on silicon chip assembly, which is characterized in that also Including：

Light source assembly, for exporting the first light for including three primary colours light；

It is divided light-integrating subassembly, is arranged in the transmission path of first light comprising three primary colours light, for will described include three First light of primary lights is divided into the three primary colours light with the first polarization state, and the three primary colours light with the first polarization state is passed It transports to the liquid crystal on silicon chip assembly and is modulated to obtain modulation light, while by the modulation light of the liquid crystal on silicon chip assembly Combining；

Polarization Modulation component, in the transmission path for the modulation light being arranged after combining, for according to modulating frequency with timesharing Mode to after combining the modulation light carry out Polarization Modulation, obtain comprising according to sequential export at least two-beam second Light, wherein the first light beam in at least two-beam has first polarization state, the second light in at least two-beam Beam has the second polarization state, and first light beam and second light beam include the three primary colours light；

Camera lens is arranged in the transmission path of second light, for first with the first polarization state using sequential export Light beam and the second light beam projecting with the second polarization state form 3D rendering；

Wherein, first polarization state and second polarization state are orthogonal.

2. liquid crystal on silicon optical projection system according to claim 1, which is characterized in that the light splitting light-integrating subassembly includes：

First polarizer, for first light comprising three primary colours light to be converted to the third with first polarization state Light；

Wavelength spectrum groupware is set in the transmission path of the third light, for by the third with the first polarization state Light be divided into the first primary lights with the first polarization state transmitted along different light paths, the second primary lights with the first polarization state, And the third primary lights with the first polarization state.

3. liquid crystal on silicon optical projection system according to claim 2, which is characterized in that the wavelength spectrum groupware includes：

First dichroscope is arranged in the transmission path of the third light, for reflecting the first light splitting in the third light First primary lights with first polarization state are obtained, the second light splitting in the third light is transmitted；

Speculum is arranged in the transmission path of first primary lights with first polarization state, has for reflecting First primary lights of first polarization state；

Second dichroscope is arranged in the transmission path of second light splitting, for transmiting having in second light splitting Second primary lights of first polarization state, and reflect the third primary colours with the first polarization state in second light splitting Light.

4. liquid crystal on silicon optical projection system according to claim 2, which is characterized in that the light splitting light-integrating subassembly further includes：

Polarization spectro light-integrating subassembly is set in the rear end light path of the wavelength spectrum groupware, is used for described along different light paths Transmission the first primary lights with the first polarization state, the second primary lights with the first polarization state and with first polarize The third primary lights of state are divided to the liquid crystal on silicon chip assembly；It is additionally operable to the tune for being emitted the liquid crystal on silicon chip assembly Photosynthesis processed is all the way.

5. liquid crystal on silicon optical projection system according to claim 4, which is characterized in that the polarization spectro light-integrating subassembly packet It includes：

The transmission path in first primary lights with first polarization state is arranged in first polarization spectro light-combining prism In, for there will be first primary lights of first polarization state to reflex to the liquid crystal on silicon chip assembly, and transmit The modulation light of the liquid crystal on silicon chip assembly outgoing；

The transmission path in second primary lights with first polarization state is arranged in second polarization spectro light-combining prism In, for second primary lights with first polarization state of transmission to be reflexed to the liquid crystal on silicon chip assembly, And transmit the modulation light of the liquid crystal on silicon chip assembly outgoing；

Third polarization spectro light-combining prism is arranged in the transmission path of the third primary lights, and described for that will reflect Three primary colours light reflexes to the liquid crystal on silicon chip assembly, and transmits the modulation light of the liquid crystal on silicon chip assembly outgoing.

6. liquid crystal on silicon optical projection system according to claim 5, which is characterized in that the liquid crystal on silicon chip assembly packet It includes：

First liquid crystal on silicon chip is arranged in the transmission path of first primary lights with first polarization state, uses In being modulated to have second polarization by first primary lights with first polarization state based on 3D source images signal First modulation light of state；

Second liquid crystal on silicon chip is arranged in the transmission path of second primary lights with first polarization state, uses In second primary lights with first polarization state are modulated to have described second based on the 3D source images signal Second modulation light of polarization state；

Third liquid crystal on silicon chip is arranged in the transmission path of the third primary lights with first polarization state, uses In the third primary lights with first polarization state are modulated to have described second based on the 3D source images signal The third modulation light of polarization state,

Wherein, the modulation light includes first modulation light, second modulation light and the third modulation light, the tune Frequency processed is synchronous with the alternating frequency of 3D source images signal, and the alternating frequency is the left eye figure of the 3D source images signal The frequency to alternate with eye image signal as signal.

7. liquid crystal on silicon optical projection system according to claim 6, which is characterized in that the polarization spectro light-integrating subassembly also wraps It includes：

The transmission in first modulation light, second modulation light and the third modulation light is arranged in three color light-combining prisms The intersection in path obtains for first modulation light, second modulation light and the third modulation light to be combined The modulation light after combining.

8. liquid crystal on silicon optical projection system as claimed in any of claims 1 to 7, which is characterized in that the light source group Part includes：

Excitation light source, for sending out exciting light；

Colour wheel is arranged in the transmission path of the exciting light, and wavelength conversion material is provided on the colour wheel, and the colour wheel exists Include the first light of three primary colours light under the irradiation of the exciting light described in outgoing.

9. liquid crystal on silicon optical projection system according to claim 8, which is characterized in that

The exciting light is blue light, and the wavelength conversion material is yellow wavelengths transition material, it is described comprising three primary colours light the One light includes not by the blue light that the wavelength conversion material absorbs and the Huang that the yellow wavelengths transition material converts blue light into Light.

10. a kind of liquid crystal on silicon optical projection system shown for 3D rendering, including liquid crystal on silicon chip assembly, which is characterized in that Further include：

Light source assembly, is used for the first light beam of sequential export and the second light beam, first light beam and the second light beam respectively include to Few two kinds of primary lights, and the closing light of first light beam and the second light beam includes three primary colours light；

Spectrum groupware is arranged in the first light beam of the sequential export and the transmission path of the second light beam, for by described the One light beam is divided into the first primary lights with the first polarization state, the second primary lights with the first polarization state and with the second polarization Second primary lights of state, and respectively by first primary lights with the first polarization state, described have the of the first polarization state Two primary lights and described there are the second primary lights of the second polarization state to be transmitted to the liquid crystal on silicon chip assembly be modulated Beamlet is modulated to the first modulation beamlet, the second modulation beamlet and third；It is additionally operable to second light beam being divided into tool There are the first primary lights, the third primary lights with the first polarization state and the third primary colours with the second polarization state of the first polarization state Light, and respectively by first primary lights, the third primary lights with the first polarization state and institute with the second polarization state Stating, there are the third primary lights of the second polarization state, which to be transmitted to the liquid crystal on silicon chip assembly, is modulated to obtain the first modulation Light beam, the 4th modulation beamlet and the 5th modulation beamlet；

Light-integrating subassembly is modulated, is arranged in the transmission path for the modulation beamlet that the liquid crystal on silicon chip assembly is modulated, For carrying out Polarization Modulation to the first modulation beamlet in a manner of timesharing according to modulating frequency, obtain according to sequential export Primary colours modulate light beam, primary colours modulation light beam, the second modulation beamlet and the third modulate beamlet closing light Third light beam is obtained, the primary colours modulation light beam, the 4th modulation beamlet and the 5th modulation beamlet closing light obtain To the 4th light beam, the third light beam and the 4th light beam closing light obtain the second light；

Camera lens is arranged in the transmission path of second light, for the third light beam and described the using sequential export Four light beam projectings form 3D rendering,

Wherein, first polarization state and second polarization state are orthogonal.

11. liquid crystal on silicon optical projection system according to claim 10, which is characterized in that the spectrum groupware includes：

First dichroscope is arranged in the rear end light path of the light source assembly, in the first light sequential, reflection described first The first light splitting in light beam transmits the second light splitting in first light beam；It is additionally operable in the second light sequential, reflection described first First light splitting in light, transmits the third light splitting in first light；

First polarizer is arranged in the transmission path of first light splitting, in first light sequential and described second Third light splitting is transformed to first primary lights with first polarization state by light sequential；

Polarization spectro component is set in the rear end light path of first dichroscope and first polarizer, is used for institute It states the second light splitting and is divided into the second primary lights with the first polarization state and with the second polarization state transmitted along different light paths Two primary lights, and by the first primary lights with the first polarization state transmitted along different light paths, second with the first polarization state Primary lights and the second primary lights with the second polarization state are transmitted to the liquid crystal on silicon chip assembly；Being additionally operable to will be described Third is divided into the third primary lights with the first polarization state transmitted along different light paths and the third with the second polarization state Primary lights, and the first primary lights described in being transmitted along different light paths with the first polarization state, described there is the first polarization state The second primary lights and the second primary lights light splitting with the second polarization state to the liquid crystal on silicon chip assembly.

12. liquid crystal on silicon optical projection system according to claim 11, which is characterized in that the polarization spectro component includes：

First polarization splitting prism is arranged in the transmission path of first primary lights with the first polarization state, is used for First light sequential and second light sequential reflex to first primary lights with first polarization state described Liquid crystal on silicon chip assembly, and transmit the first modulation beamlet of the liquid crystal on silicon chip assembly outgoing；

Second polarization splitting prism is arranged in the transmission path of second light splitting and third light splitting, for described First light sequential is divided into the second primary lights with first polarization state and with second polarization by described second Second primary lights of state, and by the second primary lights with first polarization state and the second base with second polarization state Color emissions transmit the second modulation of the liquid crystal on silicon chip assembly outgoing to the liquid crystal on silicon chip assembly Light beam and the third modulate beamlet；It is additionally operable to, in second light sequential, the third is divided into described The third primary lights of one polarization state and third primary lights with second polarization state, and will be with first polarization state Third primary lights and third primary colours light emitting with second polarization state transmit institute to the liquid crystal on silicon chip assembly State the 4th modulation beamlet and the 5th modulation beamlet of the outgoing of liquid crystal on silicon chip assembly.

13. liquid crystal on silicon optical projection system according to claim 12, which is characterized in that the liquid crystal on silicon chip assembly packet It includes：

First liquid crystal on silicon chip is arranged in the transmission path of first primary lights, in first light sequential and First primary lights with first polarization state are modulated to have by second light sequential based on 3D source images signal First modulation beamlet of second polarization state；

Second liquid crystal on silicon chip, be arranged with first polarization state second primary lights and with described first partially In the transmission path of the third primary lights of polarization state, for that in first light sequential, will be had based on the 3D source images signal Second primary lights of first polarization state are modulated to the second modulation beamlet with second polarization state；It is additionally operable to In second light sequential, based on the 3D source images signal by the third primary colours light modulation with first polarization state For the 4th modulation beamlet with second polarization state；

Third liquid crystal on silicon chip, be arranged with second polarization state second primary lights and with described second partially In the transmission path of the third primary lights of polarization state, for that in first light sequential, will be had based on the 3D source images signal Second primary lights of second polarization state are modulated to the third modulation beamlet with first polarization state；It is additionally operable to In second light sequential, based on the 3D source images signal by the third primary colours light modulation with second polarization state For the 5th modulation beamlet with first polarization state；

Wherein, the modulating frequency is synchronous with the alternating frequency of 3D source images signal, and the alternating frequency is the sources 3D The frequency that the left-eye image signal of picture signal alternates with eye image signal.

14. liquid crystal on silicon optical projection system according to claim 13, which is characterized in that the modulation light-integrating subassembly includes：

First Polarization Modulation device is set in the rear end light path of first polarization splitting prism, in first light Sequential export has the first modulation beamlet of the second polarization state；Second light sequential output with the first polarization state the One modulation beamlet；

The light path in second polarization splitting prism and the first Polarization Modulation device emergent light is arranged in second dichroscope Intersection by the first modulation beamlet with the second polarization state, described has in first light sequential Second modulation beamlet of the second polarization state and the third modulation beamlet closing light with the first polarization state are described the Three light beams；It is additionally operable in second light sequential, by the first modulation beamlet, the tool with the first polarization state Have the first polarization state the 4th modulation beamlet and it is described have the second polarization state the 5th modulation beamlet closing light be described 4th light beam, and by the third light beam and the 4th light beam and light be second light.

15. the liquid crystal on silicon optical projection system according to any one of claim 10 to 14, which is characterized in that the light source Component includes：

Excitation light source, for sending out exciting light；

Colour wheel is arranged in the transmission path of the exciting light, and at least two wavelength conversion material, institute are provided on the colour wheel Colour wheel is stated under the irradiation of the exciting light according to the first light beam described in sequential export and second light beam,

Wherein, the modulating frequency is consistent with the alternating frequency of at least two wavelength conversion material of the colour wheel.

16. liquid crystal on silicon optical projection system according to claim 15, which is characterized in that

The exciting light is blue light, and at least two wavelength conversion material includes that green wavelength transition material and red light wavelength turn Conversion materials,

Wherein, first light beam includes the blue light not absorbed by the green wavelength transition material and green wavelength conversion The green light that the blue light is converted by material；Second light beam includes the blue light not absorbed by the red light wavelength transition material The feux rouges for being converted into the blue light with the red light wavelength transition material.