CN116047787A - A high-definition color static three-dimensional display system and preparation method - Google Patents

Abstract

The invention discloses a high-definition color static three-dimensional display system and a preparation method thereof, wherein the system comprises a light source module and a multi-angle light control unit, a light filtering coloring mechanism and a light transmitting and shielding mechanism are arranged between the light source module and the multi-angle light control unit, the light transmitting and shielding mechanism comprises a plurality of unit light transmitting and shielding areas which are distributed in an array mode, the shape of each unit light transmitting and shielding area is a line type or a rectangle, the unit light transmitting and shielding area is set by controlling the light transmitting and shielding area ratio, RGB color frequency selective transmission areas are distributed in the light filtering coloring mechanism, the RGB color frequency selective transmission areas are circularly distributed along the first direction of the light filtering coloring mechanism, the RGB color frequency selective transmission areas transversely penetrate the light filtering coloring mechanism in a single color along the second direction of the light filtering coloring mechanism, and the first direction and the second direction are mutually perpendicular. The invention improves the display quality through reasonable setting and optimization of the optical structure, thereby realizing a static three-dimensional display system with high definition, smooth parallax and high color level.

Description

A high-definition color static three-dimensional display system and preparation method

technical field

The invention relates to a three-dimensional display system, in particular to a high-definition color static three-dimensional display system and a preparation method.

Background technique

With the development and progress of display technology, 3D display technology has been widely applied in the fields of life entertainment, industrial production, scientific research, etc. However, in order to pursue high-quality display effects, the complexity and cost of its manufacturing process are also gradually Improvements have also resulted in a large number of application requirements that cannot be met.

In the prior art, technical solutions for color static display of three-dimensional images include holograms and color printing lenticular pictures, among which, the color accuracy of holograms is poor, and the manufacturing process is very difficult, and the definition of color printing lenticular pictures is poor. There is no continuous smoothing parallax, and the number of color steps and the width of the color gamut are poor. In addition, under the demand scenario of color static 3D display, the cost of existing dynamic display equipment is too high, and static display equipment has problems such as insufficient clarity, unsmooth parallax, and inability to achieve high-level color display, which leads to color static display. The demand scenarios for 3D display cannot be met, which hinders the application, promotion and development of 3D display technology.

Contents of the invention

The technical problem to be solved by the present invention is to provide a high-definition color static three-dimensional display system with high definition, smooth parallax, and high color scale by rationally setting and optimizing the optical structure to improve the display quality and aiming at the deficiencies of the prior art. Preparation.

In order to solve the above technical problems, the present invention adopts the following technical solutions.

A high-definition color static three-dimensional display system, which includes a light source module and a multi-angle light control unit, a filter coloring mechanism and a light-transmitting mechanism are arranged between the light source module and the multi-angle light control unit, The mechanism includes a plurality of unit light-shielding areas distributed in an array. The shape of each unit light-shielding area is a line or a rectangle. The unit light-shielding area is set by controlling the ratio of light-shielding and light-shielding areas. The filter coloring The RGB color frequency selective transmission area is arranged in the mechanism, and the RGB color frequency selection transmission area is circulated along the first direction of the filter coloring mechanism, and the RGB color frequency selection transmission area is distributed along the filter coloring The second direction of the mechanism traverses the filter coloring mechanism in a single color, and the first direction and the second direction are perpendicular to each other.

Preferably, along the light emitting direction of the light source module, the filter coloring mechanism is located at the front side of the light-transmitting mechanism, or the filter coloring mechanism is located at the rear side of the light-transmitting mechanism, and the coloring mechanism is located at the rear side of the light-transmitting mechanism. The actual colored surface of the mechanism is in close contact with the actual shielding surface of the light-transmitting and shading mechanism.

Preferably, the light source module is a collimated beam light source module, and the multi-angle light control unit is a cylindrical lens grating.

Preferably, the light source module is a collimated beam light source module, and the multi-angle light control unit is a slit grating.

Preferably, the light source module is a diffused backlight light source module, and the multi-angle light control unit is a cylindrical lens slit composite grating.

Preferably, the light source module is a reflector light source module, and the multi-angle light control unit is a cylindrical lens slit composite grating.

A preparation method for a high-definition color static three-dimensional display system. The high-definition color static three-dimensional display system includes a light source module, a filter coloring mechanism, a light-transmitting mechanism and a multi-angle light control unit. The light-transmitting mechanism includes a plurality of arrayed Distributed unit light-shielding areas, each unit light-shielding area is equipped with equally spaced light-shielding lines, and the color filter and coloring mechanism is equipped with an RGB color frequency selection transmission area; the light-transmitting area code of the light-transmitting mechanism The algorithm includes: image input step: the computer reads the 3D viewpoint array images to be displayed in batches, and extracts pixel information corresponding to the 3D viewpoint; computer reading step: compiles the pixel information corresponding to the 3D viewpoint into a multi-viewpoint pixel Fusion image; evaluating the color scale distribution step: exporting the color scale histogram of the multi-viewpoint pixel fusion image, and analyzing the color scale distribution, and assigning weights according to the frequency of occurrence of each color scale; binary array generation step: generating a binary array by computer And import it into the laser control equipment, the laser control equipment controls the light spot exposure of the laser head based on the power on and off of the circuit; the step of determining the laser energy: select the laser energy that can produce the grayscale effect closest to the input image; the adjustment step of the laser irradiation position: use The laser irradiates the light spot at the corresponding position of the film sheet to record the light intensity information of the multi-viewpoint image, adjust the distribution position of the ink dots under the condition that the number and diameter of the ink dots in the unit light-shielding range are the same, and perform an overall secondary adjustment on the image gray level, The display effect is close to that of the input image; the step of solidifying and forming ink droplets: turning the laser spots into actual ink dots; the step of finished product: cleaning to reduce the light transmittance of the laser irradiation area of the film sheet to obtain the light-transmitting and shading mechanism.

Preferably, the preparation process of the filter and coloring mechanism includes: fabricating an optical structure with a periodic visible light frequency selective transmission area by using a silk screen process or a photolithography process, and forming an RGB color frequency selective transmission area on the filter, so that In the RGB color frequency selection transmission area, a black area is set between the three RGB color areas, and the RGB period is less than 4.8mm.

Preferably, when the shading control is realized by controlling the number of black dots or the length of black lines in the unit shading area, the shading ratio control is performed by adjusting the position arrangement or line arrangement of black and white points in the shading line area, based on the number The processing algorithm adjusts the arrangement of black and white dots or lines, and selects and adjusts based on the difference in physical means for recording light intensity information.

Preferably, the physical means are printing and photolithography, and there are differences between the actual black points or actual lines recorded by the two physical means of printing and photolithography and the ideal black points or ideal lines obtained by the digital processing algorithm. The digital processing algorithm is: using the difference between the two physical means of printing and photolithography, readjust the ideal black point or ideal line arrangement of digital processing, so that the black point or black line recorded by the physical means is different from the actual gray The variance between degree requirements is reduced.

In the high-definition color static three-dimensional display system disclosed by the present invention, the light source module, the light-transmitting and shading mechanism, the light-filtering and coloring mechanism and the multi-angle light control unit are rotated at a certain angle, and are arranged and connected according to corresponding ways to form a high-definition and large-depth color static display system. In a three-dimensional display system, the light source module is an optical device that can provide visible light in a certain frequency range or reflect a certain frequency range, and the light transmission and shading mechanism controls the intensity of the light beam transmitted from this position by recording static light intensity information at different positions Industrial products, the filter and coloring mechanism is an optical structure with a certain light transmittance and a frequency selective transmission area periodically distributed in the visible light range, and the multi-angle light control unit is composed of periodically distributed light control units The optical structure that can adjust and control the light beams entering the light control unit at different positions to different angles. The multi-angle light control unit can control the light beam to the corresponding angle. It is the basic unit of the multi-angle light control structure. Based on the above architecture, the light source emits light or reflects ambient light to generate light beams. The light beams are transmitted through the light-shielding mechanism, the filter coloring mechanism and the multi-angle light control unit in a certain order, and the light intensity control, color control, and angle control are performed respectively. The light beams are controlled to different angles to realize the imaging display of color static three-dimensional display images. Compared with the prior art, the present invention optimizes and improves the display quality through rational setting and optimization of the optical structure, thereby realizing high definition, smooth parallax, high color scale and other characteristics.

Description of drawings

FIG. 1 is a schematic diagram of the structure of the high-definition color static three-dimensional display system of the present invention;

Fig. 2 is a structural schematic diagram of the light-transmitting mechanism;

Fig. 3 is a structural schematic diagram of a unit light-shielding area;

Fig. 4 is a structural schematic diagram of a filter coloring mechanism;

5 is a schematic structural diagram of a collimated beam light source module;

6 is a schematic structural view of a diffused backlight light source module;

Fig. 7 is a structural schematic diagram of a reflector light source module;

Fig. 8 is a flow chart of film ink dot coloring;

Fig. 9 is a schematic diagram of a composite grating with a slit cylindrical lens;

Fig. 10 is the flow chart and schematic diagram of the encoding realization of the halftone film image;

Fig. 11 is a flow chart of the encoding algorithm for the translucent shading area;

Fig. 12 is a schematic diagram of the three-dimensional state of the structure of the high-definition color static three-dimensional display system of the present invention;

Fig. 13 is a schematic diagram 2 of the three-dimensional state of the composition structure of the high-definition color static three-dimensional display system of the present invention;

Fig. 14 is a schematic diagram of the optical path of the high-definition color static three-dimensional display system of the present invention.

Detailed ways

The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

The present invention discloses a high-definition color static three-dimensional display system, please refer to Fig. 1 to Fig. 4, Fig. 12 and Fig. The multi-angle light control unit 4 is provided with a filter coloring mechanism 2 and a light-transmitting mechanism 3. The light-transmitting mechanism 3 includes a plurality of unit light-shielding areas 30 distributed in an array, each unit light-shielding area 30 The shape is line-shaped or rectangular, and the unit light-shielding area 30 is set by controlling the light-shielding and light-transmitting area ratio. The RGB color frequency selection transmission area 20 is arranged in the filter coloring mechanism 2, and the RGB color frequency selection The transmission area 20 is circularly distributed along the first direction of the filter coloring mechanism 2, and the RGB color frequency selective transmission area 20 traverses the filter coloring in a single color along the second direction of the filter coloring mechanism 2 In mechanism 2, the first direction and the second direction are perpendicular to each other.

In the above system, the light source module 1, the light-transmitting and shading mechanism 3, the filter and coloring mechanism 2 and the multi-angle light control unit 4 are rotated by a certain angle (the specific rotation method is: rotate the light-transmitting and shading mechanism by 0-5°, thereby increasing the viewpoint) , according to the corresponding placement and connection mode to form a high-definition and large-depth color static three-dimensional display system, the light source module 1 is an optical device that can provide visible light in a certain frequency range or reflect a certain frequency range, and the light-transmitting mechanism 3 is through An industrial product that records static light intensity information at different positions and controls the intensity of the light beam passing through the position. The filter and coloring mechanism 2 has a certain light transmittance and a frequency selective transmission area that is periodically distributed in the visible light range. The multi-angle light control unit 4 is an optical structure that is composed of periodically distributed light control units and can adjust and control the light beams entering the light control unit at different positions to different angles. The multi-angle light control unit 4 can control the light beam The unit to the corresponding angle is the basic unit of the multi-angle light control structure. Based on the above structure, the light source emits light or reflects ambient light to generate light beams, and the light beams transmit through the light-shielding mechanism 3, the light filtering and coloring mechanism 2, and the multi-angle light control unit 4 in a certain order, and respectively perform light intensity control, color control, and angle control. Light beams with different intensities and colors are controlled to different angles to realize the imaging display of colored static three-dimensional display images. Compared with the prior art, the present invention optimizes and improves the display quality through rational setting and optimization of the optical structure, thereby realizing high definition, smooth parallax, high color scale and other characteristics.

Specifically, along the light emitting direction of the light source module 1, the filter and coloring mechanism 2 is located on the front side of the light-transmitting mechanism 3, or the filter and coloring mechanism 2 is located on the rear side of the light-transmitting mechanism 3, The actual colored surface of the filter and coloring mechanism 2 (such as the film surface of the silk screen filter and coloring mechanism) is in close contact with the actual shielding surface of the light-transmitting mechanism 3 (such as the film surface of the film-printed light-shielding mechanism). In this embodiment, the positions of the light-transmitting and shading mechanism 3 and the light-filtering and coloring mechanism 2 can be exchanged, and there is no obvious difference in the display effect by adjusting the coding rules of the light-transmitting and shading mechanism.

There are multiple arrangements of the above-mentioned mechanisms, and each arrangement has different device options. The specific methods include:

Mode 1: the light source module 1 is a collimated beam light source module, and the multi-angle light control unit 4 is a cylindrical lens grating. The light path direction is:

Collimated beam light source module-transmitting and shielding mechanism-filtering and coloring mechanism-cylindrical lens grating.

Mode 2: the light source module 1 is a collimated beam light source module, and the multi-angle light control unit 4 is a slit grating. The light path direction is:

Collimated beam light source module-transmitting and shielding mechanism-filtering and coloring mechanism-slit grating.

Mode 3: The light source module 1 is a diffused backlight light source module, and the multi-angle light control unit 4 is a cylindrical lens slit composite grating. The light path direction is:

Scattering backlight light source module-light-transmitting and shading mechanism-filtering and coloring mechanism-cylindrical lens slit composite grating.

Mode 4: The light source module 1 is a reflector light source module, and the multi-angle light control unit 4 is a cylindrical lens slit composite grating. The light path direction is:

Reflector plate light source module-transmitting and shading mechanism-filtering and coloring mechanism-cylindrical lens slit composite grating.

In a preferred embodiment of the present invention, there are three options for the light source module: a collimated beam light source module, a diffused backlight light source module, and a reflector light source module. These three modules correspond to different multi-angle light control structures. Among them, the collimated beam generator can be composed of a light-emitting panel and a collimating lens to form a collimated beam with a divergence angle of less than 10°; it can also emit a collimated beam with a divergence angle of less than 10° from a small-angle light source array. The diffused backlight source module can be directly provided by a backlight source with uniform light intensity distribution, such as a diffused backlight source formed by combining a lamp bead array and a brightness enhancement film. The reflector light source module forms a reflective light source by reflecting ambient light. Generally, a stable and uniform light source is required to reflect the beam on the reflector to form a system light source.

Regarding the light-transmitting and shading mechanism, in this embodiment, the light-transmitting and shading mechanism records the static light intensity information of the light beam passing through different positions of the light-transmitting and shading mechanism by adjusting the proportion of the light-transmitting and shading area occupied by different positions, and distributes them at different positions of the light-transmitting and shading mechanism The area that can control the proportion of light transmission and shading is the unit light transmission area, and the shape of the unit light transmission area located at different positions of the light transmission mechanism is adjusted according to the difference of the light control unit. When the light control unit uses a cylindrical lens or a slit, the shape of the unit light-shielding area is preferably a periodically arranged rectangle or line, and the unit light-shielding area is arranged in an array to complete the static light intensity information recording at different positions of the light-transmitting mechanism.

Regarding the filter and coloring mechanism, in this embodiment, the frequency selective transmission areas controlled by the filter and coloring mechanism for different colors are arranged periodically, and the color types constitute a color space, and its distribution is similar to that of the information recorded by the light-transmitting and shading mechanism. It is related to the light control direction of the light control unit. When the light control unit uses a cylindrical lens or a slit and the unit light-shielding area of the light-transmitting mechanism is a periodically arranged rectangle or line, the frequency selection transmission area is preferably frequency selection of three colors of RGB, and the preferred arrangement is: Along the first direction, RGB is arranged periodically in sequence, and the direction perpendicular to this direction is the second direction, and a single color is distributed along the second direction. In order to optimize the error, the preferred arrangement is to set a black area between the three colors of RGB in the orderly arrangement direction of RGB.

Regarding the multi-angle light control mechanism, in this embodiment, the multi-angle light control mechanism is composed of periodically distributed light control units, which can adjust and control the light beam to a certain angle of the optical structure, including but not limited to the common grating array , prism array, etc. The selection of the multi-angle light control structure is related to the selection of the filter and coloring mechanism. When the filter and coloring mechanism is arranged periodically in RGB order along the first direction, the direction perpendicular to it is the second direction, and a single color is displayed along the second direction. In the preferred scheme of distribution, the multi-angle light control structure is preferably a grating array.

The present invention also relates to a preparation method of a high-definition color static three-dimensional display system. As shown in FIGS. The light control unit 4, the light-transmitting mechanism 3 includes a plurality of unit light-shielding areas 30 distributed in an array, each unit light-shielding area 30 is equipped with light-shielding lines 31 distributed at equal intervals, and the light-filtering and coloring mechanism 2. An RGB color frequency selection transmission area 20 is arranged inside;

The light-transmitting area coding algorithm of the light-transmitting mechanism 3 includes:

Image input step: the computer batch reads the 3D viewpoint array images to be displayed, and extracts the pixel information of the corresponding position of the 3D viewpoint;

Computer reading step: compile the pixel information corresponding to the three-dimensional viewpoint into a multi-viewpoint pixel fusion image;

Evaluate the color scale distribution step: export the color scale histogram of the multi-viewpoint pixel fusion image, analyze the color scale distribution, and assign weights according to the frequency of occurrence of each color scale; in practical applications, this step specifically includes: 1. Export The histogram statistical results of the color scale distribution of the fusion image; 2. The change of laser energy will cause the change of the system color scale; 3. According to the color scale distribution of the image, each color scale weight is given, and the most weighted color scale that can be expressed is selected. Excellent laser energy;

Binary array generation step: the computer generates a binary array and imports it into the laser control device, and the laser control device controls the spot exposure of the laser head based on the power on and off of the circuit; in this step, the computer processes the multi-viewpoint pixel fusion image into a binary array. The method is to process the multi-viewpoint pixel fusion image into a large number of unit light-shielding areas, and print the light-shielding areas to hang the net, and the net hanging result is the binary array result;

Determine the laser energy step: select the laser energy that can produce the grayscale effect closest to the input image;

Laser irradiation position adjustment step: use the laser to irradiate the light spot at the corresponding position of the film sheet to record the light intensity information of the multi-viewpoint image, adjust the ink dot distribution position under the condition that the number and diameter of the ink dots are the same within the unit light-shielding range, and adjust the gray level of the image Perform an overall secondary adjustment to approach the display effect of the input image;

Curing to form ink droplets step: turning the laser spot into an actual ink dot;

Finishing step: cleaning to reduce the light transmittance of the laser irradiation area of the film sheet to obtain the light-transmitting and light-shielding mechanism 3 .

In the above method, the manufacturing process of the light-transmitting and shielding mechanism 3 is to reduce the light transmittance of a certain part of a solid light-transmitting material through an industrialized method. Among them, the more representative manufacturing process includes photolithography mask plate, silk screen printing process, Laser exposure photosensitive material process, the medium carrier is usually a transparent photosensitive material or a transparent material that can be attached to liquid medicine and ink. Among them, in this embodiment, the photosensitive surface is preferably formed by attaching the film sheet to the drug, and the black drug ink droplet is cured by laser. , and then cleaning, so that the light transmittance of the laser irradiation area of the light-transmitting product decreases.

In practical applications, according to the resolution limit of the human eye, the light-transmitting mechanism 3 is divided into unit light-shielding areas, and then by adjusting the light-transmitting ratio in the unit light-shielding area to control the light intensity of the beam passing through the unit light-shielding area. Strong, so as to realize the adjustment of the intensity of the light beam passing through the light-shielding mechanism. The unit light-shielding area is generally set as the same polygon that can be distributed on the plane where the light-shielding mechanism is located without overlapping and leaving no gaps, such as rectangles and parallelograms. When the light control unit uses cylindrical lenses or slits, the shape of the unit light-shielding area is preferably a periodically arranged rectangle or line, and the unit light-shielding area is arranged in an array to complete the static light intensity information recording at different positions of the light-transmitting mechanism. In this embodiment, it is preferable to set the unit light-shielding area as the narrowest line under the highest resolution of laser curing, the width of this line is the diameter of the laser spot, and the length is controlled by the filter coloring mechanism.

For the coding algorithm of the light-transmitting and shading area of the light-transmitting mechanism 3, in this embodiment, it is preferable to form a photosensitive surface by attaching a film sheet to a drug, and to solidify the black drug ink droplet by laser, and then to clean it, so that the laser irradiation area of the light-transmitting product The light transmittance decreases.

As shown in Fig. 10 and Fig. 11, the encoding algorithm of the translucent shading area utilizes the difference between the circular ink drop formed by the laser spot and the square pixel of the digitally encoded picture, and adjusts the distribution position of the square pixel in the translucent area of the digital encoding unit. To achieve an encoded image that is closer to the expected pixels, the specific steps include:

Image input: The computer reads the 3D viewpoint array images to be displayed in batches, and extracts the pixel information of the corresponding positions of the corresponding viewpoints; computer reading: compiles the corresponding pixel information into a multi-viewpoint pixel fusion image; evaluates the color scale Distribution: Export the color scale of the multi-viewpoint pixel fusion image, and perform statistical evaluation of the color scale; Binary array generation: The spot exposure of the laser head is controlled by switching on and off the circuit, so the computer will generate a binary array and import it into the laser control device ; Determine the laser energy: the laser energy determines the diameter of the spot, and the spot diameter is the same as the radius of the ink dot. Different diameters of the ink dots can lead to differences in gray levels in the unit light-shielding area. Therefore, on the basis of evaluating the color scale distribution, choose The laser energy that can produce the grayscale effect closest to the input image is extremely important; laser irradiation position adjustment: After the medium positioning is completed, the laser irradiates the light spot at the corresponding position to record the light intensity information of the multi-viewpoint image. When the number and diameter of the inner ink dots are the same, adjusting the distribution position of the ink dots can make an overall secondary adjustment to the image gray level to make it closer to the display effect of the input image; curing to form ink droplets: turning the laser spot into Actual ink dots; halftone transparent and light-shielding mechanism: After the whole process of processing, the preferred light-transmitting and light-shielding mechanism in this embodiment is finally formed.

In practical applications, when the unit light-shielding area is preferably controlled by controlling the number of black dots or the length of black lines, it is preferable to control the light transmission by controlling the number of blank dots or the length of white lines. Realize the control of the ratio of light transmission and shading. In addition, when the light control structure is selected as a cylindrical lens grating or a slit grating and the filter and coloring mechanism is arranged periodically in RGB order along the first direction, the direction perpendicular to it is the second direction, and a single color distribution is along the second direction In the preferred solution, the single color distribution area is preferably continuous and uninterrupted, the RGB period is preferably less than 4.8mm, and the RGB period is preferably the same or approximately the same as the light control unit period.

Further, the preparation process of the filter and coloring mechanism 2 includes: fabricating an optical structure with a periodic visible light frequency selective transmission area by using a silk screen process or a photolithography process, and forming an RGB color frequency selective transmission area 20 on the filter. In the RGB color frequency selective transmission area 20, a black area is set between the three RGB color areas, and the RGB period is less than 4.8mm. Regarding the RGB cycle, the filter needs to be composed of three primary colors to display a color image, so the three primary colors must be smaller than the resolution limit of the human eye, otherwise the human eye will find that the color of the beam is separated when observing, so the RGB filter needs to be closely arranged. Three colors, and make them periodic.

Regarding the specific process flow of the filter and coloring mechanism 2, in this embodiment: the filter and coloring mechanism 2 adopts an optical structure with a periodic visible light frequency selective transmission area made by silk screen technology or photolithography technology; the control of the filter and coloring mechanism is different The frequency selective transmission areas of the colors are arranged periodically, and the color types constitute the color space. The frequency selective transmission area is the same polygonal period that can be distributed on the plane where the light transmission and shading mechanism is located without overlapping and leaving no gaps. Generally, a rectangle is selected. The filter and coloring mechanism of this embodiment preferably has three frequency selective transmission regions of RGB, and the three frequency selective regions are arranged according to the arrangement in the figure below. At the same time, the filter will be alternately arranged in RGB three colors in the first direction, and a single color will be distributed in the second direction, and when the unit light-shielding area of the light-transmitting mechanism is a line, the period of a group of RGB in the first direction is equal to or Approximate to the line length of the unit light-shielding line area of the light-shielding film.

As a preferred method, when the unit light-shielding area 30 realizes light-shielding control by controlling the number of black dots or the length of black lines, the light-shielding control is carried out by adjusting the position arrangement or line arrangement of black and white points in the area of the light-shielding lines 31 Proportional control, based on the digital processing algorithm to adjust the position arrangement of black and white points or line arrangement, and select and adjust based on the difference in the physical means of recording light intensity information.

Regarding the unit light-shielding area 30, in this embodiment, the shape of the unit light-shielding area can be a line of binary points, or a rectangular array of binary points. The pixel fusion map forms a specific ratio of light transmission and shading, and the ratio of light transmission and shading is controlled by the coverage area of ink dots. In addition, the coverage area of ink dots is controlled by two methods: the number of ink dots and the position of ink dots.

Specifically, the physical means are printing and photolithography, and there are differences between the actual black spots or actual lines recorded by the two physical means of printing and photolithography and the ideal black spots or ideal lines obtained by the digital processing algorithm. The digital processing algorithm adopted is: using the difference between the two physical means of printing and photolithography, readjusting the arrangement of ideal black dots or ideal lines for digital processing, so that the black dots or black lines recorded by physical means are different from the actual ones. The variability between gray scale requirements is reduced.

The further algorithm includes: adjusting the amount of ink dots and lithography energy according to the grayscale distribution of the three-dimensional display content, so that the grayscale control of adjusting the ideal black point and ideal line distribution for different contents is more accurate. In practical applications, when the light-transmitting mechanism uses printing or lithography to record light intensity information, the recorded light intensity information is attached to the surface of the medium. Preferably, the system is arranged in such a way that the surface on which the light-transmitting mechanism records light intensity information is in close or nearly close contact with the light-filtering and coloring mechanism.

Regarding the process flow of the multi-angle light control unit 4 , in this embodiment: the multi-angle light control structure is composed of multi-angle light control units, and the light control units have the same structure and maintain a periodic arrangement. There are many different options, and the selection is related to the selection of the light source used. Various types of multi-angle light control units such as cylindrical lens grating array, slit grating and composite grating array can be used. The preferred multi-angle light control unit of this embodiment The unit and the light source module are respectively: a slit cylindrical lens composite grating and a diffused backlight light source module.

As an application example, as shown in Fig. 12 to Fig. 14, in one embodiment of the present invention: select collimated light beam as light source module, select film sheet as light-transmitting mechanism, and select RGB ink printing sheet as light filtering and coloring mechanism , select the cylindrical lens grating as the multi-angle light control structure. The collimated beam passes through the light-transmitting mechanism to form beams of different intensities at different positions, and then the collimated beam passes through the filtering and coloring mechanism to form collimated beams with different intensities of rgb three colors. The collimated beam passes through the cylindrical lens grating, collimated The beam expands in a direction perpendicular to the cylindrical lens and becomes a fan. The unit light-shielding area of the light-transmitting and shading mechanism is a line type. Among them, the light source module, light filtering and coloring mechanism and multi-angle light control structure remain unchanged, and the display of different display contents can be realized by replacing different light-transmitting and shading mechanisms. Different light-transmitting and shading mechanisms record different light intensity information, so that multi-colored The beams have different intensities, enabling the construction of voxels in 3D space. The optical design of the lens is shown in Figure 14.

The high-definition color static three-dimensional display system disclosed by the present invention consists of four parts, including a light source module, a light-transmitting and shading mechanism, a light-filtering and coloring mechanism, and a multi-angle light-controlling structure. Among them, the light source module provides the light source required by the display system. Different light sources are selected according to the characteristics of other structures. The light source provides light beams that contain multiple wavelengths and are similar to white light. The light beams of the light source module pass through the light-transmitting mechanism, filter Coloring mechanism, multi-angle light control structure and other parts, in order to achieve intensity control, color control and angle control.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. All modifications, equivalent replacements or improvements made within the technical scope of the present invention shall be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a high definition color static three-dimensional display system, its characterized in that, including light source module (1) and multi-angle accuse light unit (4), light filtering coloring mechanism (2) and light transmission mechanism (3) are equipped with between light source module (1) and multi-angle accuse light unit (4), light transmission mechanism (3) are including a plurality of unit light transmission region (30) that are array distribution, and the shape of every unit light transmission region (30) is line type or rectangle, sets for this unit light transmission region (30) through controlling the light transmission area ratio, RGB colour frequency selection is passed through regional (20) have been laid in light filtering coloring mechanism (2), RGB colour frequency selection is passed through regional (20) and is followed the circulation of the first direction of light filtering coloring mechanism (2), RGB colour frequency selection is passed through regional (20) along the second direction of light filtering coloring mechanism (2) is with single colour is traversed light filtering coloring mechanism (2), first direction and second direction mutually perpendicular.

2. The high-definition color static three-dimensional display system according to claim 1, wherein the filter coloring mechanism (2) is located at the front side of the light-transmitting shielding mechanism (3) along the light-emitting direction of the light source module (1), or the filter coloring mechanism (2) is located at the rear side of the light-transmitting shielding mechanism (3), and the actual coloring surface of the filter coloring mechanism (2) is closely attached to the actual shielding surface of the light-transmitting shielding mechanism (3).

3. The high-definition color static three-dimensional display system according to claim 1, wherein the light source module (1) is a reflector light source module, and the multi-angle light control unit (4) is a cylindrical lens slit composite grating.

4. The preparation method of the high-definition color static three-dimensional display system is characterized in that the high-definition color static three-dimensional display system comprises a light source module (1), a light filtering and coloring mechanism (2), a light transmission and shielding mechanism (3) and a multi-angle light control unit (4), wherein the light transmission and shielding mechanism (3) comprises a plurality of unit light transmission and shielding areas (30) which are distributed in an array mode, light shielding lines (31) which are distributed at equal intervals are distributed in each unit light transmission and shielding area (30), and RGB color frequency selective transmission areas (20) are distributed in the light filtering and coloring mechanism (2);

the light-transmitting and shielding area coding algorithm of the light-transmitting and shielding mechanism (3) comprises the following steps:

an image input step: reading three-dimensional viewpoint array images to be displayed in batches by a computer, and extracting pixel information of a position corresponding to the three-dimensional viewpoint;

and a computer reading step: the pixel information corresponding to the three-dimensional view point is coded into a multi-view point pixel fusion image;

an evaluation tone scale distribution step: deriving a tone histogram of the multi-viewpoint pixel fusion image, analyzing the tone distribution condition, and distributing weight according to the occurrence frequency of each tone;

binary array generation: the computer generates a binary array and leads the binary array into laser control equipment, and the laser control equipment controls the spot exposure of the laser head based on circuit on-off;

determining laser energy: selecting laser energy which can generate the gray effect most similar to the input image;

a laser irradiation position adjustment step: the method comprises the steps of utilizing laser to irradiate light spots at corresponding positions of a film to record multi-viewpoint image light intensity information, adjusting the distribution positions of ink points under the condition that the number and the diameter of the ink points are the same in a unit transparent and shading range, and carrying out integral secondary adjustment on the image gray scale so as to be close to the display effect of an input image;

a step of solidifying to form ink drops: changing the laser spot into an actual ink spot;

the finished product steps are as follows: and (3) cleaning the film to reduce the light transmittance of the laser irradiation area of the film so as to obtain the light-transmitting and shielding mechanism.

5. The method for preparing the high-definition color static three-dimensional display system according to claim 4, wherein the preparation process of the filtering coloring mechanism (2) comprises the following steps: an optical structure with a periodical visible light frequency selective transmission area is manufactured by adopting a silk screen process or a photoetching process, an RGB color frequency selective transmission area (20) is formed on the optical filter, a black area is arranged between the RGB three color areas in the RGB color frequency selective transmission area (20), and the RGB period is smaller than 4.8mm.

6. The method for preparing the high definition color static three dimensional display system according to claim 4, wherein when the unit transparent light shielding area (30) realizes light shielding control by controlling the number of black dots or the length of black lines, the transparent light shielding proportion control is performed by adjusting the position arrangement or the line arrangement of black dots in the area of the light shielding lines (31), the black-and-white dot position arrangement or the line arrangement is adjusted based on a digital processing algorithm, and the selection adjustment is performed based on the difference of physical means for recording light intensity information.

7. The method for preparing a high-definition color static three-dimensional display system according to claim 6, wherein the physical means are printing, printing and photoetching, and the actual black points or actual lines recorded by the two physical means are different from the ideal black points or ideal lines obtained by a digital processing algorithm, and the digital processing algorithm adopted for the difference is as follows: and (3) readjusting the arrangement of the ideal black points or the ideal lines in the digital processing by utilizing the difference of two physical means of printing and photoetching so as to reduce the difference between the black points or the black lines recorded by the physical means and the actual gray level requirement.

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