CN113933998A - Optical module/system, display device, head-mounted display equipment and display system - Google Patents
Optical module/system, display device, head-mounted display equipment and display system Download PDFInfo
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- CN113933998A CN113933998A CN202111234897.0A CN202111234897A CN113933998A CN 113933998 A CN113933998 A CN 113933998A CN 202111234897 A CN202111234897 A CN 202111234897A CN 113933998 A CN113933998 A CN 113933998A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0093—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0179—Display position adjusting means not related to the information to be displayed
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0179—Display position adjusting means not related to the information to be displayed
- G02B2027/0187—Display position adjusting means not related to the information to be displayed slaved to motion of at least a part of the body of the user, e.g. head, eye
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Abstract
本发明涉及光学显示技术领域，提供了一种光学模组/系统、显示装置、头戴式显示设备和显示系统，在使用时，可以控制合成扫描图像的中心光轴，来调整合成扫描图像在第一图像上的叠加位置。即可以将该高分辨率的合成扫描图像叠加显示在特定位置处。同时，由于人眼对于中心小范围视场的图像分辨率要求较高，人眼的中心小范围视场可以对准高分辨的合成扫描图像观看，可以提高人眼的高分辨率中心视场的观看体验。人眼对于中心小范围视场以外的分辨率要求不高，因此中心小范围视场以外的第一图像的分辨率较低不会影响观感，则第一图像源可以采用分辨率较低的图像源，从而可以降低该光学显示装置整体的器件成本。
The present invention relates to the technical field of optical display, and provides an optical module/system, a display device, a head-mounted display device and a display system, which can control the central optical axis of a synthesized scanned image during use to adjust the Overlay position on the first image. That is, the high-resolution composite scanned image can be superimposed and displayed at a specific position. At the same time, because the human eye has high requirements for the image resolution of the central small-scale field of view, the central small-scale field of view of the human eye can be viewed at the high-resolution synthetic scanning image, which can improve the resolution of the high-resolution central field of view of the human eye. viewing experience. The human eye does not have high requirements on the resolution outside the central small field of view, so the lower resolution of the first image outside the central small field of view will not affect the look and feel, so the first image source can use a lower resolution image source, so that the overall device cost of the optical display device can be reduced.
Description
Technical Field
The invention relates to the technical field of optical display, in particular to an optical module/system, a display device, a head-mounted display device and a display system.
Background
In the existing display technology, a single image is generally displayed on one screen. A single screen cannot satisfy this requirement if images with different resolutions are to be displayed superimposed on the screen. How to superpose and display images with different resolutions on one screen is a technical problem to be solved in the field.
Disclosure of Invention
In view of the above, the present invention provides an optical module/system, a display device, a head-mounted display apparatus and a display system, which can realize image overlay display with different resolutions.
To solve the above technical problem, the present invention provides an optical module, which includes: a first image source for displaying a first image; an imaging medium for imaging the first image; a second image source for emitting image light; the first main scanner is arranged in the light emergent direction of the second image source and used for scanning and reflecting the image light in a first direction to emit a first scanning image track; the first sub scanner is connected with the first main scanner and used for driving the first main scanner to rotate in a second direction; the focusing assembly is arranged in the reflection direction of the first main scanner and used for focusing the first scanning image track emitted by the first main scanner in the rotating process; the second main scanner is arranged in the focusing direction of the focusing assembly and is used for scanning and reflecting the focused first scanning image track in a third direction to emit a synthesized scanning image, wherein the third direction is different from the first direction, and the resolution of the synthesized scanning image is higher than that of the first image; the imaging medium is positioned in a reflection direction of the second main scanner and is also used for imaging the synthesized scanning image; and a second sub-scanner connected to the second main scanner, the second sub-scanner being configured to drive the second main scanner to rotate in a fourth direction, wherein the fourth direction is different from the second direction.
Optionally, the method further comprises: an eye tracking module configured to: detecting to obtain the gazing point position of human eyes on the imaging medium; the processing module is electrically connected with the eye tracking module and acquires the information of the gazing point position; wherein the processing module is electrically connected to the first sub-scanner and the second sub-scanner, respectively, the processing module configured to: and controlling the first sub-scanner and the second sub-scanner to align the central optical axis of the composite image to the gazing point position according to the information of the gazing point position.
Optionally, the first main scanner includes a first base and a first galvanometer, and the first galvanometer is rotatably connected to the first base; the first sub-scanner comprises a first sub-scanner base and a first rotating body, the first rotating body is rotatably connected to the first sub-scanner base, and the first base is connected with the first rotating body.
Optionally, the second main scanner includes a second base and a second galvanometer, and the second galvanometer is rotatably connected to the second base; wherein, the second subscanning ware includes second subscanning ware base and second rotor, the second rotor rotates to be connected on the second subscanning ware base, the second base with the second rotor is connected.
Optionally, the focusing assembly comprises: the off-axis focusing mirror group is used for off-axis focusing the first scanning image track on the second main scanner.
Optionally, the off-axis focusing mirror group comprises: a first mirror disposed in a scanning reflection direction of the first main scanner; and a second reflecting mirror disposed in a reflecting direction of the first reflecting mirror; wherein the second main scanner is disposed in a reflection direction of the second mirror.
Optionally, the optical surface of the first mirror and the optical surface of the second mirror are both free-form surfaces or cylindrical reflective surfaces.
Optionally, the method further comprises: and the light inlet side of the projection objective group is positioned in the scanning reflection direction of the second main scanner, and the imaging medium is positioned on the light outlet side of the projection objective group.
Optionally, the second image source comprises: a light source for generating visible light; and the modulation module is electrically connected with the light source and is used for modulating the light source.
Optionally, the light source comprises: the modulation module is used for modulating each monochromatic light source so that the monochromatic light source emits modulated monochromatic light with corresponding wave bands; and the beam combining component is arranged on a light outlet path of the monochromatic light source and is used for combining the modulated monochromatic light with different wave bands into the image light.
Optionally, one of the monochromatic light sources is a red light machine, which has a first light exit window, and the red light machine emits modulated red light from the first light exit window; one of the monochromatic light sources is a green light machine, the green light machine is provided with a second light-emitting window, and the green light machine emits modulated green light from the second light-emitting window; one of the monochromatic light sources is a blue light machine and is provided with a third light-emitting window, and the blue light machine emits modulated green light from the third light-emitting window; wherein, it includes to close the bundle subassembly: the third reflector is arranged in the light emergent direction of the first light emergent window, and the reflection waveband of the optical surface of the third reflector is a red waveband; the first dichroic mirror is arranged in the light emergent direction of the second light emergent window, the transmission waveband of the first dichroic mirror is a red light waveband, and the reflection waveband of the first dichroic mirror is a green light waveband; the second dichroic mirror is arranged in the light emergent direction of the third light emergent window, the transmission waveband of the second dichroic mirror is a red light waveband and a green light waveband, and the reflection waveband of the second dichroic mirror is a blue light waveband; wherein the third mirror, the first dichroic mirror, and the second dichroic mirror are parallel to each other.
Optionally, a scattering film layer is disposed on the display surface of the imaging medium.
In another embodiment, the present invention provides an optical system comprising: the optical modules are respectively used as a left eye viewing assembly and a right eye viewing assembly, and the left eye viewing assembly and the right eye viewing assembly are distributed in a bilateral symmetry mode.
In another embodiment, the present invention provides a display device applied to a virtual reality device or an augmented reality device, the display device including: the optical system described above; and the fixed structure is connected with the optical system.
Optionally, the display device further comprises: the head wearing assembly is connected with the fixing structure and used for being worn on the head of a person.
Optionally, the display device further comprises: a housing within which the optical system is housed.
Optionally, the display device further comprises: the camera, the camera lens of camera faces the people's eye.
In another embodiment, the invention provides a head-mounted display device, which includes the display apparatus.
In another embodiment, the present invention provides a display system, which is a virtual reality and/or augmented reality display system, and the display system includes a signal input module and the head-mounted display device, where the head-mounted display device receives and processes a signal of the signal input module.
Optionally, the signal input module includes an operation controller electrically connected to the head-mounted display device.
Optionally, the display system is a virtual and/or augmented reality display all-in-one machine, and the processing module is further configured to control the operation controller and display contents of the first image source and display contents of the second image source.
The invention has the beneficial effects that: in use, the central optical axis of the composite scanned image may be controlled to adjust the position of the overlay of the composite scanned image on the first image. I.e., the high resolution composite scan image can be displayed superimposed at a particular location. Meanwhile, because the requirement of the human eyes on the image resolution of the central small-range view field is high, the central small-range view field of the human eyes can be aligned to the high-resolution synthesized scanning image to be watched, and the watching experience of the high-resolution central view field of the human eyes can be improved. The requirement of human eyes on the resolution outside the central small-range view field is not high, so that the appearance is not influenced due to the low resolution of the first image outside the central small-range view field, and the first image source can adopt the image source with the low resolution, so that the overall device cost of the optical display device can be reduced.
Drawings
Fig. 1 is a schematic structural diagram of an optical module according to an embodiment of the present invention.
Fig. 2 is a schematic view showing an installation structure of a first main scanner and a first sub scanner according to the present invention.
Fig. 3 is a schematic view showing an installation structure of a second main scanner and a second sub scanner according to the present invention.
Fig. 4 is a schematic structural view illustrating a projection objective lens assembly according to the present invention.
Fig. 5 is a schematic structural diagram of a display system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Fig. 1 is a schematic structural diagram of an optical module according to an embodiment of the present invention. The present embodiment provides an optical module, as shown in fig. 1, the optical module includes: a first image source 1, an imaging medium 2, a second image source 5, a first main scanner 6, a first sub-scanner 7, a focusing assembly 8, a second main scanner 9 and a second sub-scanner 10.
The first image source 1 is configured to display a first image, the imaging medium 2 is configured to image the first image, the first image source 1 may be a projector or a self-luminous display panel, the first image source 1 shown in fig. 1 is a self-luminous display panel, the first image source 1 and the imaging medium 2 together form a display, the imaging medium 2 is a transmission panel of the first image source 1, and specifically, the imaging medium 2 may be a flat glass. Further, the first image source 1 may also be a projector, the first image source 1 projecting an image on the imaging medium 2 to display the first image.
The second image source 5 is for emitting image light different from the first image; the first main scanner 6 is arranged in the light-emitting direction of the second image source, the first main scanner 6 is used for scanning and reflecting the image light in a first direction to emit a first scanning image track, the first sub scanner 7 is connected with the first main scanner 6, the first sub scanner 7 is used for driving the first main scanner 6 to rotate in a second direction, the focusing component 8 is arranged in the reflecting direction of the first main scanner 6, the focusing component 8 is used for focusing the first scanning image track emitted by the first main scanner 6 in the rotating process, the second main scanner 9 is arranged in the focusing direction of the focusing component 8, the specific second main scanner 9 can be arranged on or near the focal plane of the focusing component 8, the second main scanner is used for scanning and reflecting the focused first scanning image track in a third direction to emit a synthesized scanning image, wherein the third direction is different from the first direction, and the resolution of the synthesized scanned image is higher than that of the first image; the imaging medium 2 is located in the reflection direction of the second main scanner 9, and the imaging medium 2 is also used for imaging the composite scanned image; the second sub-scanner 10 is connected to the second main scanner 9, and the second sub-scanner 10 is configured to drive the second main scanner 9 to rotate in a fourth direction, where the fourth direction is different from the second direction.
In use, when the second image source 5 irradiates the first main scanner 6 with image light, the first main scanner 6 scans and reflects the image light, and the first scanned image track is fan-shaped image light under a certain time integral. The first sub-scanner 7 can drive the first main scanner 6 to rotate, that is, can drive the first scanned image track to rotate, that is, can change the irradiation direction of the fan-shaped image light.
The focusing assembly 8 is capable of focusing the first scanned image track under the combined action of the first main scanner 6 and the first sub-scanner 7 and onto the second main scanner 9, and the second main scanner 9 again performs scanning in the third direction. Specifically, the focusing assembly 8 may adopt various optical focusing methods such as lens group focusing, free-form surface off-axis reflective focusing, and the like, which are all the prior art and are not described herein again. Here, since the third direction is different from the first direction, the scanning reflection of the first main scanner 6 and the scanning reflection of the second main scanner 9 can be synthesized into one synthesized scanned image. The pattern of the scan image depends on the scanning patterns of the first main scanner 6 and the second main scanner 9, and the scan image may be a raster scan pattern or a Lissajous (Lissajous) scan pattern, for example.
The irradiation direction of the synthesized scanned image scanned and reflected by the second main scanner 9 can be changed by the scanning rotation of the second sub scanner 10. Since the fourth direction is different from the second direction, the irradiation direction of the synthesized scanned image, that is, the specific image forming position of the synthesized scanned image on the image forming medium 2 can be changed accurately by the first sub-scanner 7 and the second sub-scanner 10. The resolution of the synthesized scanned image may be higher than the resolution of the first image, and the image size of the synthesized scanned image may be smaller than the image size of the first image, i.e., a small image with a higher resolution may be superimposed on the first image on the imaging medium 2, to realize high-resolution display of a small area.
The specific control principle is as follows:
fig. 2 is a schematic view showing an installation structure of a first main scanner and a first sub scanner according to the present invention. Fig. 3 is a schematic view showing an installation structure of a second main scanner and a second sub scanner according to the present invention. As shown in fig. 2 and 3, the first sub-scanner 7 includes a first sub-scanner base 71 and a first rotating body 72, the first rotating body 72 is rotatably connected to the first sub-scanner base 71, and the first sub-scanner base 71 is provided with a rotation driving unit capable of driving the first rotating body 72 to rotate. Specifically, for example, a rotation motor may be mounted on the first sub scanner base 71, and the rotation motor may drive the first rotation body 72 to rotate. The first rotating body 72 may be a flat plate type, and the first main scanner 6 is mounted on a surface of the first rotating body 72. Both the first main scanner 6 and the second main scanner 9 may employ a Micro Electro-Mechanical System (MEMS) scanner. The first main scanner 6 includes a first base 61 and a first galvanometer 62, and when the first main scanner 6 is stationary, the scanning mirror of the first main scanner 6 is parallel to a first rotating body 72 of the first sub scanner 7. The first main scanner 6 performs a scanning operation using the first rotating body 72 as a support. The perpendicular bisector of the surface of the first galvanometer 62 when the first main scanner 6 is at rest is the central optical axis of the image scanned by the first main scanner 6 when scanning, and the first main scanner 6 is mounted on the first rotating body 72, so the perpendicular bisector of the surface of the first rotating body 72 is the central optical axis of the image scanned by the first main scanner 6.
Similarly, the second main scanner 9 includes a second base 91 and a second galvanometer 92, and the second galvanometer 92 is rotatably connected to the second base 91. The second sub-scanner 10 includes a second sub-scanner base 101 and a second rotating body 102, the second rotating body 102 is rotatably connected to the second sub-scanner base 101, and the second base 91 is connected to the second rotating body 102. The central optical axis of the second main scanner 9 is the perpendicular bisector of the second rotating body 102 of the second sub scanner 10.
Thus, in practice, the direction of the perpendicular bisector of the first rotating body 72 of the first sub-scanner 7 is controlled, and the direction of the perpendicular bisector of the second rotating body 102 of the second sub-scanner 10 is controlled, i.e., the central optical axis of the composite scanned image is controlled to adjust the position of the composite scanned image on the first image.
In summary, with the configuration of the present invention, the superimposition position of the composite scanned image on the first image can be adjusted by controlling the central optical axis of the composite scanned image by the first sub-scanner 7 and the second sub-scanner 10, that is, the composite scanned image of high resolution can be superimposed and displayed at a specific position.
Meanwhile, because the requirement of the human eye 12 on the image resolution of the central small-range view field is high, the central small-range view field of the human eye 12 can be viewed by aligning with the high-resolution synthesized scanned image, and the viewing experience of the high-resolution central view field of the human eye 12 can be improved. The requirement of the human eye 12 on the resolution outside the central small-range view field is not high, so that the appearance is not affected due to the low resolution of the first image outside the central small-range view field, and the first image source 1 can adopt an image source with low resolution, so that the overall device cost of the optical display device can be reduced.
Optionally, as shown in fig. 1, the optical module further comprises an eye tracking module 3 and a processing module 4. Wherein the eye tracking module 3 is configured to: the gazing point position of human eyes 12 on the imaging medium 2 is obtained through detection, the processing module 4 is electrically connected with the eye tracking module 3, and the processing module 4 obtains the information of the gazing point position. The processing module 4 is electrically connected to the first sub-scanner 7 and the second sub-scanner 10, respectively, the processing module 4 being configured to: and controlling the first sub-scanner 7 and the second sub-scanner 10 to align the central optical axis of the composite image with the gazing point position according to the information of the gazing point position.
According to the vision habit of human eyes, human eyes generally only have high resolution requirements on the image of the area with the central small-range visual field, but have no high requirements on the resolution of the area outside the central small-range visual field. For the visual habit, after the eye tracking module 3 detects the gazing point position of the human eye 12 on the imaging medium 2, the processing module 4 obtains the information of the gazing point position, and controls the steering of the first sub-scanner 7 and the second sub-scanner 10 according to the data, so as to change the imaging position of the synthesized scanning image on the imaging medium 2.
The first sub-scanner 7 and the second sub-scanner 10 may employ a mechanical scanner, a MEMS scanner, or a simple scanning rotation structure. The relative positions of the devices are preset, and according to the gazing point position, the synthetic scanning image can be aligned to the gazing point position by rotating the first sub-scanner 7 and the second sub-scanner 10 to certain angles by a simple algorithm. Specifically, since the relative positions of the first sub-scanner 7, the second sub-scanner 10, and the image forming medium 2 are determined. Thus, the gaze location, the vertical leg between the first sub-scanner 7, the first sub-scanner 7 and the imaging medium 2, these three location points form a triangle; the gaze location, the perpendicular foothold between the second sub-scanner 10, the second sub-scanner 10 and the imaging medium 2, these three location points form a triangle. The first sub-scanner 7 and the second sub-scanner 10 may be controlled to align the central optical axis of the composite scanned image with the gaze location according to the cosine law.
According to the real-time gazing point position, a first included angle between a connecting line of the first sub-scanner 7 and the gazing point position and a perpendicular line of the surface of the imaging medium 2 is calculated by adopting a cosine law. Here, as the line connecting the first sub-scanner 7 and the gaze point position, a line connecting the geometric center of the first sub-scanner 7 and the gaze point position may be used. Then, the first sub-scanner 7 is controlled to rotate so that a second angle between a perpendicular bisector of the surface of the first rotating body 72 of the first sub-scanner 7 and a perpendicular bisector of the surface of the imaging medium 2 is equal to the first angle, and the perpendicular bisector of the surface of the first rotating body 72 of the first sub-scanner 7 is aligned with the gazing point position, that is, the central optical axis of the synthesized scanned image is aligned with the gazing point position. As for the control of the second angle, a reference direction may be set in advance, for example, when the perpendicular bisector of the first rotating body 72 is perpendicular to the surface of the image forming medium 2, the second angle is 0 °, and the rotational motion of the first sub scanner 7 is controlled by the reference direction to change the angle value of the second angle. Similarly, the second sub-scanner 10 is controlled such that the perpendicular bisector of the surface of the second rotating body 102 of the second sub-scanner 10 is aligned with the gazing point, and the central optical axis of the synthesized scanned image is aligned with the gazing point.
The central optical axis of the synthesized scanning image can be controlled to be aligned to the gazing point position in real time through the eye tracking module 3 and the processing module 4, so that a small high-resolution area can exist in the central small-range view field of the human eye gazing area, and the viewing experience of the high-resolution central view field of the human eye 12 is improved. And the eye tracking module 3 can track and display the high-resolution synthesized scanning image on a central small-range view field of a human eye gazing area in real time. Because the requirement of the human eyes 12 on the image resolution of the field of view outside the central small-range field of view is not high, the first image source 1 can adopt an image source with lower resolution, and therefore the overall device cost of the optical module can be reduced.
Alternatively, the display content of the synthesized scanned image is the same as the display content of the first image at the area of the synthesized scanned image on the first image, but the resolution of the synthesized scanned image is higher than the resolution of the first image of the area, and the synthesized scanned image is superimposed on the first image. Also, the first image source 1 may close the display contents of the first image at the area of the synthesized scanned image on the first image in real time, and may also reduce the display brightness of the first image at the area of the synthesized scanned image on the first image in real time.
Example two
Optionally, the focusing assembly 8 comprises: and the off-axis focusing mirror group is used for focusing the track of the first scanning image on the second main scanner 9 in an off-axis manner, wherein the first main scanner 6 is positioned at the light inlet side of the off-axis focusing mirror group, and the second main scanner 9 is positioned at the light outlet side of the off-axis focusing mirror group.
By means of off-axis focusing, the first main scanner 6 can be prevented from blocking the reflection light path of the second main scanner 9, the second main scanner 9 can be prevented from blocking the reflection light path of the first main scanner 6, all the image light scanned and emitted by the first main scanner 6 can be ensured to irradiate on the second main scanner 9, and all the image light scanned and emitted by the second main scanner 9 can be ensured to irradiate on the imaging medium 2.
Specifically, as shown in fig. 1, the off-axis focusing mirror group includes a first reflecting mirror 811 and a second reflecting mirror 812, and the first reflecting mirror 811 is disposed in the scanning reflection direction of the first main scanner 6. The second mirror 812 is disposed in the reflection direction of the first mirror 811, and the second main scanner 9 is disposed in the reflection direction of the second mirror 812.
Alternatively, as shown in fig. 1, the optical surface of first mirror 811 and the optical surface of second mirror 812 are both free-form surfaces or cylindrical reflective surfaces. The free-form surface or the cylindrical reflecting surface can realize off-axis focusing in a small space, and the occupied volume of the off-axis focusing lens group can be reduced, so that the volume and the weight of the whole optical module are reduced. In designing the surface types of the optical surfaces of the first and second reflection mirrors 811 and 812, the surface types of the optical surfaces of the first and second reflection mirrors 811 and 812 are designed by a conventional optical design method according to the specific positions of the first main scanner 6, the first reflection mirror 811, the second main scanner 9, and the second reflection mirror 812, so that the first scanned image locus under the combined action of the first main scanner 6 and the first sub-scanner 7 can be focused on the second main scanner 9.
Fig. 4 is a schematic structural view illustrating a projection objective lens assembly according to the present invention. Optionally, as shown in fig. 4, the optical module further includes a projection objective lens group 11, a light entering side of the projection objective lens group 11 is located in a scanning reflection direction of the second main scanner 9, the imaging medium 2 is located at a light exiting side of the projection objective lens group 11, and the human eye 12 is located in a viewing area of the imaging medium 2. Fig. 4 is a schematic side view of the arrangement of the present invention viewed from the front of the imaging medium 2, with the projection objective lens group 11 not located between the imaging medium 2 and the human eye 12, but on the side of the imaging medium.
By means of the projection objective lens group 11, the illumination direction of the composite scanned image can be changed. The size of the composite scanned image, i.e., the display size of the composite scanned image on the imaging medium 2, can also be adjusted. Through the projection objective lens group 11, the placement positions of the first main scanner 6 and the second main scanner 9 can be more flexible, and the installation flexibility of each device of the optical module is improved. Specifically, the projection objective lens group 11 may be a mirror, a lens, a half mirror, or the like, and when the projection objective lens group 11 employs a mirror or a half mirror, the projection direction of the synthesized scanned image may be changed, so that the placement position of the imaging medium 2 may be more flexible.
Optionally, the second image source 5 comprises a light source for generating visible light and a modulation module. The modulation module is electrically connected with the light source and is used for modulating the light source, and the modulated visible light emitted by the light source is image light.
As shown in fig. 1, the light source includes a beam combining assembly 52 and a plurality of monochromatic light sources 51, each of the monochromatic light sources 51 is used for generating monochromatic light of different wavelength bands, and the modulation module is used for modulating each of the monochromatic light sources 51, so that the monochromatic light sources 51 emit modulated monochromatic light of corresponding wavelength bands. The beam combining component 52 is disposed on the light emitting path of the monochromatic light source 51, and the beam combining component 52 is configured to combine the modulated monochromatic light of different wavelength bands into image light. By combining the plurality of monochromatic light sources 51, an image display with better color can be realized.
Specifically, one of the monochromatic light sources 51 is a red light machine, the red light machine has a first light-emitting window, and the red light machine emits modulated red light from the first light-emitting window. One of the monochromatic light sources 51 is a green light machine, which has a second light-emitting window, and the green light machine emits modulated green light from the second light-emitting window. One of the monochromatic light sources 51 is a blue light engine, which has a third light-emitting window, and the blue light engine emits modulated green light from the third light-emitting window.
Optionally, a scattering film layer is disposed on the display surface of the imaging medium 2, and when the synthesized scanned image is irradiated on the scattering film layer, the scattering film layer may improve the scattering capability of the imaging medium 2 on the synthesized scanned image, so as to increase the viewing angle of the synthesized scanned image. Specifically, the first image source may employ a projector that projects image light corresponding to the first image on the imaging medium 2 to display the first image.
EXAMPLE III
The present invention provides an optical system including: in the optical module, the two optical modules are respectively used as the left eye viewing assembly and the right eye viewing assembly, and the left eye viewing assembly and the right eye viewing assembly are distributed in bilateral symmetry. In use, the left and right eyes of a user view images from the two optical modules, respectively.
Example four
The invention further provides a display device applied to virtual reality equipment or augmented reality equipment, and in some embodiments, the display device comprises the optical system and a fixed structure, wherein the optical system is connected with the fixed structure.
When the optical module is used, when human eyes are positioned in the reflection direction of the imaging medium, the images imaged on the imaging medium can be observed, the optical module can track the fixation point position of the human eyes, and small-area high-resolution images are displayed in the central view field of the human eyes. Specifically, the display device may be a virtual reality/augmented reality product such as a transmissive/non-transmissive display, or may be a head-mounted virtual reality/augmented reality product. The fixed structure provides support for the optical system, and avoids displacement of each part of the optical system in the use process, so that the durability of the optical system is ensured. When the display device is a transmission type virtual reality/augmented reality product, the imaging medium is a semi-transparent and semi-reflective lens, so that human eyes can view a real scene outside the imaging medium.
The display device further comprises a head wearing assembly, the head wearing assembly is connected with the fixing structure, and the head wearing assembly is used for being worn on the head of a person.
When the display device is used, the display device can be worn on the head of a user through the head wearing assembly, the head of the user provides support for the display device, and virtual reality or augmented reality images can be conveniently watched.
Optionally, the display device further includes a housing and a camera, the optical system is accommodated in the housing, and the housing can effectively protect the optical system from being damaged. The lens of camera faces people's eyes, and this camera can be used for carrying out eye movement tracking function, and this camera is connected with eye movement tracking module 3 electricity promptly, and when display device worked, the people's eyes were shot constantly to the camera, thereby eye movement tracking module 3 obtains people's real-time fixation point position.
EXAMPLE five
The invention also provides head-mounted display equipment comprising the display device. Wherein the head-worn assembly may include a spectacle frame including temples between which the optical system is secured. The embodiment can hang the glasses legs on the ears of the user, and the imaging medium can be installed on the lens installation position of the glasses frame, so that the head-mounted display equipment can be conveniently worn on the head of the user, and virtual reality display or augmented reality display is provided for the user. When the display device is a transmission-type virtual reality/augmented reality product, the imaging medium installed at the lens installation position is a semi-transparent and semi-reflective lens, so that human eyes can view a real scene outside the imaging medium.
Optionally, the head-mounted display device includes an optical system disposed therein and a buckle, the buckle being used to fix the optical system in front of the human eye. In use, the clasp may hold the optical system in front of the human eye for viewing by the human eye.
EXAMPLE six
Fig. 5 is a schematic structural diagram of a display system according to the present invention. The present invention further provides a display system, which is a virtual reality and/or augmented reality display system, as shown in fig. 5, the display system includes a signal input module 13 and the head-mounted display device, and the head-mounted display device receives the signal of the signal input module 13 and transmits the signal to the head-mounted display device for processing. The signal input module 13 includes an operation controller electrically connected to the head-mounted display device. Optionally, the display system is a virtual and/or augmented reality display all-in-one machine, and the processing module 4 is further configured to control the operation controller and the display content of the first image source and the display content of the second image source.
In some embodiments, as shown in fig. 5, the display system further comprises a memory 15, the processing module 4 is electrically connected to the second image source 5 and the signal input module 13, respectively, and the memory 15 is used for storing executable instructions of the processing module 4.
In use, the processing module 4 may be a Central Processing Unit (CPU) or other form of processing unit having data processing capabilities and/or instruction execution capabilities, and may control other components in the display system to perform desired functions.
Memory 15 may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. Volatile memory can include, for example, Random Access Memory (RAM), cache memory (or the like). The non-volatile memory may include, for example, Read Only Memory (ROM), a hard disk, flash memory, and the like. One or more computer program instructions may be stored on the computer readable storage medium and executed by the processing module 4 to control the second image source 5 to emit image light.
The signal input module 13 may be interconnected with the processing module 4 by a bus system and/or other form of connection mechanism (not shown), and the signal input module 13 may include, for example, a keyboard, mouse, joystick, touch screen, and the like.
Of course, for simplicity, only some of the components of the display system that are relevant to the present invention are shown in fig. 5, omitting components such as buses, input/output interfaces, and the like. In addition, the display system may include any other suitable components depending on the particular application.
The basic principles of the present invention have been described above with reference to specific embodiments, but it should be noted that the advantages, effects, etc. mentioned in the present invention are only examples and are not limiting, and the advantages, effects, etc. must not be considered to be possessed by various embodiments of the present invention. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the invention is not limited to the specific details described above.
The block diagrams of devices, apparatuses, systems involved in the present invention are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".
It should also be noted that in the apparatus, devices and methods of the present invention, the components or steps may be broken down and/or re-combined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention are included in the present invention.
Claims (21)
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