CN207408689U - Display optical system and wear display device - Google Patents
Display optical system and wear display device Download PDFInfo
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- CN207408689U CN207408689U CN201721439679.XU CN201721439679U CN207408689U CN 207408689 U CN207408689 U CN 207408689U CN 201721439679 U CN201721439679 U CN 201721439679U CN 207408689 U CN207408689 U CN 207408689U
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Abstract
The utility model provides a kind of display optical system and wears display device.The display optical system includes light source module group, scanning means and projection imaging device.Projection imaging device is Ellipsoidal Surface.Human eye is reflexed to through projection imaging device form projected image after the scanned device scanning imagery of optical information by light source module group output.Ambient light is transmitted into human eye by projection imaging device and forms ambient image.This, which wears display device, includes above-mentioned display optical system.The display optical system and wear display device include Ellipsoidal Surface, it make use of light pencil image-forming principle, so that the image quality for the virtual image being projected out is consistent with edge display area in central display area, avoid the occurrence of that central display area is clear and the problem of edge display area is fuzzy；Principle of reflection make use of to be imaged, the no any additional image component in centre, therefore the virtual image no color differnece being projected out；And non-off-axis imaging principle is employed, therefore the virtual image being projected out will not generate distortion.
Description
Technical field
The present invention relates to optical technical fields, in particular to a kind of display optical system and wear display device.
Background technology
Existing display optical system of wearing is usually used semi-transparent semi-reflecting plane mirror and traditional visual system
The mode of combination, to realize augmented reality, virtual reality or the display function of mixed reality.Therefore, it is existing to wear display light
It learns the virtual image that Systems Projection goes out and aberration, deformity and image quality occurs in central display area and edge display area
It is inconsistent, central display area is clear and the problems such as edge display area is fuzzy.
The content of the invention
In view of this, it is an object of the invention to provide a kind of display optical system and display device is worn, in solution
State problem.
To achieve the above object, the present invention provides following technical solution：
A kind of display optical system, including light source module group, scanning means and projection imaging device, the projection imaging device
For Ellipsoidal Surface；
By the optical information that the light source module group exports after the scanning means scanning imagery through the projection imaging device
It reflexes to human eye and forms projected image；Ambient light is transmitted into human eye by the projection imaging device and forms ambient image.
Optionally, the light source module group includes lighting source, optical modulator, optical-fiber bundling device and beam shaping；
The lighting source, for providing illuminating ray；
The optical modulator, for carrying out energy modulation to the lighting source；
The optical-fiber bundling device, it is a branch of for multi-color illumination light source to be synthesized；
The beam shaping carries out shaping for pairing light beams.
Optionally, the light source module group includes lighting source, optical modulator, optical-fiber bundling device and light orientation element, described
The output terminal fusion of optical-fiber bundling device has a GRIN Lens；
The lighting source, for providing illuminating ray；
The optical modulator, for carrying out energy modulation to the lighting source；
The optical-fiber bundling device and GRIN Lens, it is a branch of for multi-color illumination light source to be synthesized；
The light orientation element, for choosing particular beam.
Optionally, the light source module group includes lighting source, optical modulator and optical-fiber bundling device, and the optical-fiber bundling device is defeated
The numerical aperture of the optical fiber of outlet is less than 0.001；
The lighting source, for providing illuminating ray；
The optical modulator, for carrying out energy modulation to the lighting source；
The optical-fiber bundling device, it is a branch of for multi-color illumination light source to be synthesized.
Optionally, the scanning means includes four points of piezoelectric ceramic tubes and support fixing piece, four points of piezoelectric ceramic tubes
One end be connected with the optical-fiber bundling device, the other end is fixed on the support fixing piece.
Optionally, the display optical system further includes infrared emission unit and infrared receiver, the infrared receiver
Unit includes light splitting piece and infrared photosensitive array；
The infrared emission unit, for emitting infrared light to human eye；
The light splitting piece, for the optical band total reflection being emitted to infrared emission unit, and through visible light wave range；
The infrared receiver for human eye infrared image and stores image data.
Optionally, the projection imaging device further includes the light path folded to light path turnover element, the light
Road turnover element is arranged between the Ellipsoidal Surface and scanning means.
Optionally, the scanning means is MEMS scanning means.
Optionally, the Ellipsoidal Surface be coated with visible light wave range can thoroughly can anti-film and/or specific infrared waves layer height
Reflectance coating.
One kind wears display device, and the display device of wearing includes above-mentioned display optical system.
It display optical system provided by the invention and wears display device and includes Ellipsoidal Surface, make use of light pencil imaging former
Reason so that the image quality for the virtual image being projected out is consistent with edge display area in central display area, in avoiding the occurrence of
Heart display area is clear and the problem of edge display area is fuzzy；Principle of reflection make use of to be imaged, centre is added into without any
Picture component, therefore the virtual image no color differnece being projected out；And non-off-axis imaging principle is employed, therefore the virtual image being projected out is not
Distortion can be generated.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described.It should be appreciated that the following drawings illustrates only certain embodiments of the present invention, therefore it is not construed as pair
The restriction of scope, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of structure diagram of display optical system provided in an embodiment of the present invention.
Fig. 2 is a kind of structure diagram of light source module group provided in an embodiment of the present invention.
Fig. 3 is the structure diagram of another light source module group provided in an embodiment of the present invention.
Fig. 4 is the structure diagram of another light source module group provided in an embodiment of the present invention.
Fig. 5 is the structure diagram of another display optical system provided in an embodiment of the present invention.
Fig. 6 is the principle schematic of Ellipsoidal Surface.
Fig. 7 is the structure diagram of another display optical system provided in an embodiment of the present invention.
Fig. 8 is the structure diagram of another display optical system provided in an embodiment of the present invention.
Icon：10- light source module groups；20- scanning means；30- Ellipsoidal Surfaces；11- lighting sources；12- optical modulators；13-
Optical-fiber bundling device；14- beam shapings；111- red laser generating units；112- green laser generating units；113- bluenesss swash
Light generating unit；15- light orientation elements；131- GRIN Lens；21- tetra- divides piezoelectric ceramic tube；22- supports fixing piece；31- light
Road is turned back element；40- infrared emission units；50- infrared receivers；51- light splitting pieces；The infrared photosensitive arrays of 52-.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes.Obviously, described embodiment is only the part of the embodiment of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can configure to arrange and design with a variety of.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment of the present invention, people in the art
Member's all other embodiments obtained on the premise of creative work is not made, belong to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.In description of the invention
In, term " first ", " second ", " the 3rd ", " the 4th " etc. are only used for distinguishing description, and it is not intended that being or implying opposite
Importance.
Display optical system provided in an embodiment of the present invention, can be applied to HMD, (Head Mount Display, wear
Formula visual device), intelligent glasses, augmented reality equipment, virtual reality device, mixed reality equipment etc., be not limited herein.
Fig. 1 shows the structure diagram of display optical system provided in an embodiment of the present invention.As shown in Figure 1, the display
Optical system includes light source module group 10, scanning means 20 and projection imaging device.Projection imaging device is Ellipsoidal Surface 30.
In specific implementation process, passed through by the optical information that light source module group 10 exports after 20 scanning imagery of scanning means
The projection imaging device reflexes to human eye and forms projected image.Ambient light is transmitted into people by the projection imaging device
Eye-shaped is into ambient image.
Light source module group 10 is for exporting illuminating ray, the energy of illuminating ray energy corresponding with the gray scale of information to be displayed
Amount is consistent.Light source module group 10 can be there are many structure, such as can be as shown in Figure 2, Figure 3 and Figure 4.
As shown in Fig. 2, light source module group 10 includes lighting source 11, optical modulator 12, optical-fiber bundling device 13 and beam shaping
Device 14.Laser light source, LED light source etc. may be employed in lighting source 11.Optionally, in the present embodiment, which is
Laser light source, such as generating device of laser.The generating device of laser can include red laser generating unit 111, green laser is sent out
Raw unit 112 and blue laser generating unit 113.In another embodiment, list occurs for each laser in generating device of laser
The color of member can be configured according to actual needs, to meet the needs of actual conditions, be not limited herein.
Optical modulator 12 is used to require the energy of modulation lighting source 11 according to the gray scale of information to be displayed.In the present embodiment
In, optical modulator 12 is specially that (Variable Optical Attenuato are adjusted and decline the planar waveguide-type VOA with optical fiber
Subtract device).When being interfaced directly to VOA due to the light source of generating device of laser output, the coupling efficiency of waveguide is extremely low and to the two
Matching requirements are very high.Therefore in the present embodiment, the light source of generating device of laser output is coupled into VOA slab guides by optical fiber.Light
In a side end face of nearly laser generating unit, fusion has micro ball lens to fibre, increases the numerical aperture of optic fibre input end, improves
The coupling efficiency of laser and optical fiber.Optical-fiber bundling device 13 is used for the polychromatic source for exporting optical modulator 12 and synthesizes single beam.
In the present embodiment, optical-fiber bundling device 13 uses the conjunction beam frame mode of fused biconical taper.
Beam shaping 14 is used for the mixing light source shaping for exporting optical-fiber bundling device 13 to meet the light source need of high quality
It asks.In the present embodiment, beam shaping 14 can select known conventional techniques to realize, usually by focal length collimating mirror, short focus
Focus lamp, aperture and short focus collimating mirror composition.
In specific implementation process, three color laser light sources of generating device of laser are respectively by optical modulator 12 according to be shown
The gray scale requirement of information carries out the regulation and control of light output energy, and the three-color light source of modulation is coupled as single beam fibre by optical-fiber bundling device 13
Light source output, the light beam that optical-fiber bundling device 13 exports are converged to laser light again after focal length collimating mirror and short focus focus lamp
Spot, aperture take central area to the laser facula after convergence, filter out spot side-lobe, obtain the small light spot that energy is concentrated, most
Small light spot uniformly collimates light pencil by short focus collimating mirror collimation for Energy distribution again afterwards.
As shown in figure 3, in another embodiment, light source module group 10 includes lighting source 11, optical modulator 12, optical fiber
Bundling device 13 and light orientation element 15.Unlike Fig. 2, the output terminal fusion of optical-fiber bundling device 13 has a GRIN Lens
131, output is nearly collimated light beam.Obviously, GRIN Lens 131 can be separated with the output terminal of optical-fiber bundling device 13, theoretical
On only need the spacing of fine adjustment fiber-optic output and GRIN Lens 131, it is possible to obtain the light beam of high collimation.It is but real
This spacing does not require nothing more than high-precision adjusting mechanism usually in micron range in the operation of border, and calibration procedures complexity is time-consuming, raw
Produce inefficiency.And by the way of the two welding, it is influenced that collimating for output light can be lost to a certain extent by fusion joining process
Degree.For this purpose, one light orientation element 15 is set at the light path rear of optical-fiber bundling device 13 in the present embodiment, it is therefore an objective to only to conforming to
The light asked is by filtering out the light for being unsatisfactory for requirement.Light orientation element 15 can be angular-sensitive diffraction element or holographic element, this
In embodiment, light orientation element 15 is specially three layers of angular-sensitive diffraction binary element, corresponds to three kinds of laser generating units respectively
The light wave sent.
As shown in figure 4, in another embodiment, light source module group 10 includes lighting source 11, optical modulator 12 and light
Fine bundling device 13.Unlike Fig. 2, three light-beam source is synthesized a branch of, light by optical-fiber bundling device 13 using the method for fused biconical taper
The optical fiber of fine 13 output terminal of bundling device is specialty optical fiber, and numerical aperture is less than 0.001, and the light of optical fiber output can be approximately considered
Collimate light pencil.
During actual implementation, when selecting laser as lighting source 11, since the coherence length of laser is small, it is also easy to produce scattered
Spot effect, therefore one can be placed for weakening the device of laser speckle in the output terminal of light source module group 10, such as random vibration phase
Position plate.It is thus possible to obtain the brightness collimation light pencil that evenly speckle homogenizes.
Referring again to Fig. 1, scanning means 20 can select the device with scan function in known technology.For example,
The scanning means 20 can be MEMS scanning means, piezoelectric ceramics fibre-optic scanner, Controlled Crystal scanning means etc..It is optional
Ground, in the present embodiment, scanning means 20 are MEMS scanning means.MEMS scanning means can be shaken by a two dimension MEMS scannings
Microscope group into or two one-dimensional MEMS scanning galvanometers compositions.Light source module group 10 is virtual in eyes of user according to treating to be sent to
Color and the gray scale requirement of image are modulated light and MEMS scanning means are input to after beam shaping.MEMS scanning means
Can the purpose of output image light be realized into horizontal deflection namely by scanning this process according to drive signal, so as to
Enough virtual image is sent in eyes of user by image light.
For light source module group 10 shown in Fig. 4, scanning means 20 can be piezoelectric ceramics fibre-optic scanner.It for example, please
With reference to figure 5, scanning means 20 includes four points of piezoelectric ceramic tubes 21 and support fixing piece 22.Four points of piezoelectric ceramic tubes 21 are in one
Empty cylindrical ceramic pipe scribbles conductive pattern layer in its inner periphery, and four area equations is in outer surface but insulate to each other
Conductive layer.One end of four points of piezoelectric ceramic tubes 21 is fixed at support fixing piece 22, and the other end is free arm end, and optical fiber closes
The output terminal optical fiber of beam device 13 sticks in the cantilever end of four points of piezoelectric ceramic tubes, while leaves one section of optical fiber cantilever, according to piezoelectricity
The inverse piezoelectric effect of ceramics, after the making alive between the conductive layer of inner surface and the conductive layer of outer surface, ceramic tube generates curved
Qu Yundong.Scanning means 20 is according to drive signal, by optical fiber both horizontally and vertically into horizontal deflection, by light source module group 10
The original light processing of output is image light, so as to fulfill virtual image to be sent to the purpose in eyes of user.
Projection imaging device is Ellipsoidal Surface 30, as shown in Figure 1 and Figure 5.Fig. 6 is refer to, Fig. 6 is the original of Ellipsoidal Surface 30
Schematic diagram is managed, ellipse, which exists, is located at the first focus F1 and the second focus F2 on elliptical long axis.It is burnt from first according to common knowledge
The light beam that point F1 sets out, after elliptical reflecting, it will be focused on the second focus F2.It therefore, can be by the rotation of scanning means 20
The joint S of shaft and mirror surface is placed in the second focus F2 of Ellipsoidal Surface 30, and scanning means 20 scans each obtained
The light pencil of visual field will converge at the first focus F1 of Ellipsoidal Surface 30 after being reflected by Ellipsoidal Surface 30, then it is burnt to be in first for human eye
The image light of the scanning of scanning means 20 can be received when near point F1 positions.Due to the first focus F1 of Ellipsoidal Surface 30 and
Two focus F2 are located on long axis, when the long axis of Ellipsoidal Surface 30 is parallel with Y-axis, when face human eye is placed, and ellipsoid long axis and people
The vertical optical axis of eye is parallel, and for scanning means 20 with human eye on same vertical line, scanning means 20 has certain physical size sky
Between, therefore the physical interference of scanning means 20 and user head can be caused.Optionally, used in the present embodiment by Ellipsoidal Surface
30 rotate a low-angle so that the second focus F2 of ellipsoid deviates a distance along the Z direction, to keep away toward the direction for deviateing human eye
Exempt from the physical interference of scanning means 20 and user head, as shown in Figure 1 and Figure 5.
Optionally, what the Ellipsoidal Surface 30 was coated with visible light wave range can thoroughly can anti-film and/or specific infrared waves layer
Highly reflecting films.When the display optical system is applied to AR fields, Ellipsoidal Surface 30 visible light wave range is set can thoroughly can be anti-
Film layer can improve the brightness of virtual image.It is bent in ellipsoid when the display optical system also has the function of infrared human eye detection
Face 30 sets specific infrared waves highly reflecting films, can enhance the reflectivity of infrared waves, improves the clarity of eye image.
Optionally, Fig. 7 is refer to, projection imaging device can also include light path turnover element.Light path turnover element is set
Between Ellipsoidal Surface 30 and scanning means 20, for being folded to light path, further to reduce display optical system vertical
To the height of Y direction.Light path turnover element can select the plane mirror or deflecting prism of known technology.For example, this reality
It applies and two groups of group plane mirrors may be employed in example light path is folded twice.
Fig. 8 is refer to, optionally, above-mentioned display optical system can also include infrared emission unit 40 and infrared receiver
Unit 50.Infrared emission unit 40 covers human eye for emitting infrared light.For example, infrared emission unit 40 can be infrared LED
Light source.Infrared emission unit 40 can be positioned over any one of display optical system.During actual implementation, need to only it ensure infrared
The light beam that transmitter unit 40 is sent can cover human eye scope and the visual field of projection imaging and default external environment will not be seen
The visual field is examined to cause to block.It is optional low, in the present embodiment, infrared emission unit 40 is set in the respective embodiments described above
In light source module group 10.Infrared emission unit 40 collimates coupled into optical fibres bundling device 13, via scanning means together with R, G, B light source
20 to human eye scanning direction.In the present embodiment, infrared receiver 50 includes light splitting piece 51 and infrared photosensitive array 52.Light splitting piece
51 have the characteristic penetrated to the optical band total reflection that infrared emission unit 40 is emitted simultaneously for visible light wave range.It is infrared photosensitive
Array 52 receives the human eye infrared image reflected by light splitting piece 51.Infrared receiver 50 is for recipient's eye infrared image
And image data is stored.Infrared receiver 50 can also be connected with processor, and processor can be according to the number of storage
According to eyeball detection is carried out, the location of eyeball, direction of gaze state etc., and the information such as direction of gaze according to eyeball are identified
Perform different eye control operations.If for example, recognize human eye blinkpunkt within the time of setting be maintained at graphic interface certain
A control location carries out corresponding system operatio of this control etc..
The embodiment of the present invention also provides one kind and wears display device.This, which wears display device, includes above-mentioned display optical system
System.Display optical system provided in an embodiment of the present invention and wear display device include Ellipsoidal Surface 30, make use of light pencil into
As principle so that the image quality for the virtual image being projected out is consistent with edge display area in central display area, avoids out
Existing central display area is clear and the problem of edge display area is fuzzy；Principle of reflection make use of to be imaged, centre is without any attached
Add image-forming assembly, therefore the virtual image no color differnece being projected out；And non-off-axis imaging principle is employed, therefore the virtual graph being projected out
As distortion will not be generated.Meanwhile display optical system provided in an embodiment of the present invention and wear display device can also include it is red
Outer transmitter unit 40 and infrared receiver 50 can obtain human eye infrared image, and the later stage obtains eyeball information and according to eyeball
Information performs different eye control operations and lays the foundation.
All features or disclosed all methods disclosed in this specification or in the process the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, summary and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.I.e., unless specifically stated, each feature
It is an example in a series of equivalent or similar characteristics.In the description of the present invention, it is also necessary to explanation, term
The orientation or position relationship of the instructions such as " on ", " under ", " interior ", " outer " be based on orientation shown in the drawings or position relationship or
The invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description,
Rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and operation, because
This is not considered as limiting the invention.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of display optical system, which is characterized in that including light source module group, scanning means and projection imaging device, the throwing
Shadow imaging device is Ellipsoidal Surface；
It is reflected by the optical information that the light source module group exports after the scanning means scanning imagery through the projection imaging device
Projected image is formed to human eye；Ambient light is transmitted into human eye by the projection imaging device and forms ambient image.
2. display optical system according to claim 1, which is characterized in that the light source module group includes lighting source, light
Modulator, optical-fiber bundling device and beam shaping；
The lighting source, for providing illuminating ray；
The optical modulator, for carrying out energy modulation to the lighting source；
The optical-fiber bundling device, it is a branch of for multi-color illumination light source to be synthesized；
The beam shaping carries out shaping for pairing light beams.
3. display optical system according to claim 1, which is characterized in that the light source module group includes lighting source, light
Modulator, optical-fiber bundling device and light orientation element, the output terminal fusion of the optical-fiber bundling device have a GRIN Lens；
The lighting source, for providing illuminating ray；
The optical modulator, for carrying out energy modulation to the lighting source；
The optical-fiber bundling device and GRIN Lens, it is a branch of for multi-color illumination light source to be synthesized；
The light orientation element, for choosing particular beam.
4. display optical system according to claim 1, which is characterized in that the light source module group includes lighting source, light
Modulator and optical-fiber bundling device, the numerical aperture of the optical fiber of the optical-fiber bundling device output terminal are less than 0.001；
The lighting source, for providing illuminating ray；
The optical modulator, for carrying out energy modulation to the lighting source；
The optical-fiber bundling device, it is a branch of for multi-color illumination light source to be synthesized.
5. display optical system according to claim 4, which is characterized in that the scanning means includes four partial pressure electroceramics
Pipe and support fixing piece, described in one end of four points of piezoelectric ceramic tubes is connected with the optical-fiber bundling device, the other end is fixed on
Support fixing piece.
6. according to claim 1-5 any one of them display optical systems, which is characterized in that the display optical system also wraps
Infrared emission unit and infrared receiver are included, the infrared receiver includes light splitting piece and infrared photosensitive array；
The infrared emission unit, for emitting infrared light to human eye；
The light splitting piece, for the optical band total reflection being emitted to infrared emission unit, and through visible light wave range；
The infrared receiver for human eye infrared image and stores image data.
7. according to claim 1-5 any one of them display optical systems, which is characterized in that the projection imaging device also wraps
The light path folded to light path turnover element is included, the light path turnover element is arranged at the Ellipsoidal Surface and is filled with scanning
Between putting.
8. according to claim 1-4 any one of them display optical systems, which is characterized in that the scanning means is swept for MEMS
Imaging apparatus.
9. according to claim 1-5 any one of them display optical systems, which is characterized in that the Ellipsoidal Surface is coated with visible
Optical band can thoroughly can anti-film and/or specific infrared waves layer highly reflecting films.
10. one kind wears display device, which is characterized in that the display device of wearing is included described in claim any one of 1-9
Display optical system.
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| CN201721439679.XU CN207408689U (en) | 2017-11-01 | 2017-11-01 | Display optical system and wear display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799617A (en) * | 2019-03-08 | 2019-05-24 | 北京镭创高科光电科技有限公司 | The even light shaping optical path of multi-wavelength and optical projection system |
| TWI667497B (en) * | 2018-11-22 | 2019-08-01 | 財團法人金屬工業研究發展中心 | Augmented reality image device |
| CN111487781A (en) * | 2020-06-28 | 2020-08-04 | 南昌虚拟现实研究院股份有限公司 | Optical display device, intelligent glasses and imaging method suitable for eyes |
| US10859841B2 (en) | 2018-12-18 | 2020-12-08 | Metal Industries Research & Development Centre | Augmented reality image device |
-
2017
- 2017-11-01 CN CN201721439679.XU patent/CN207408689U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI667497B (en) * | 2018-11-22 | 2019-08-01 | 財團法人金屬工業研究發展中心 | Augmented reality image device |
| US10859841B2 (en) | 2018-12-18 | 2020-12-08 | Metal Industries Research & Development Centre | Augmented reality image device |
| CN109799617A (en) * | 2019-03-08 | 2019-05-24 | 北京镭创高科光电科技有限公司 | The even light shaping optical path of multi-wavelength and optical projection system |
| CN111487781A (en) * | 2020-06-28 | 2020-08-04 | 南昌虚拟现实研究院股份有限公司 | Optical display device, intelligent glasses and imaging method suitable for eyes |
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