CN107765434A - A kind of nearly eye display device of single image source dual-eye - Google Patents
A kind of nearly eye display device of single image source dual-eye Download PDFInfo
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- CN107765434A CN107765434A CN201711118412.5A CN201711118412A CN107765434A CN 107765434 A CN107765434 A CN 107765434A CN 201711118412 A CN201711118412 A CN 201711118412A CN 107765434 A CN107765434 A CN 107765434A
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- curved surface
- display device
- free curved
- display element
- eye display
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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
-
- 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
- G02B27/0101—Head-up displays characterised by optical features
-
- 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
- G02B27/0176—Head mounted characterised by mechanical features
Abstract
The present invention relates to a kind of single nearly eye display device of image source dual-eye, it is realized based on free curved surface prism, in the case of using only single Micro display element, coordinated by the position of free curved surface prism and reflecting element, realize good binocular vision experience, and there is ultra-thin volume, main body frame can be attached to as the peripheral hardware of intermediate plate type or General calibration glasses are present, the cost of nearly eye display device is effectively reduced, improves Consumer's Experience, the universalness of pushing meanss.
Description
The application is Application No. 201610098482.8, and the applying date is on 2 23rd, 2016, entitled " a kind of
The divisional application of the application for a patent for invention of single nearly eye display device of image source dual-eye ".
Technical field
The present invention relates to a kind of free curved surface prism, and specifically, more particularly to one kind is shown suitable for the nearly eye of single image source
The free curved surface prism of device and its nearly eye display device of single image source is used, single nearly eye display device of image source only needs one
Individual high PPI compact image display element is that good binocular vision characteristic can be achieved, and effectively reduces nearly eye display device
Cost.
Background technology
Consumption electronic product has obtained vigorous growth in recent years, and after smart mobile phone, consumer generally knows
Road virtual reality (virtual reality) and the concept for strengthening (augmented reality), and chase the various productions of correlation
Product are proposed conceptual production as the company such as trial, Microsoft, FACEBOOK, GOOGLE of experience new technology
Product, in these products, the display element individually for certain human eye has been used mostly, or separate from right and left eyes visual optical
Two middle-size and small-size display elements in system, though the two middle-size and small-size display elements can be integrated in it is integrally-formed, such as
The gear VR equipment that Oculus cooperates with Samsung, but inevasible still need to use the overall larger area of implantation to show
Device (such as mobile phone screen), it is such to set for the demand for the high PPI resolution ratio display element that nearly eye display device needs
Obviously not economic enough, the strong influence manufacturing cost of nearly eye display device is put, also can not be real under frivolous optical system
Now good binocular vision characteristic.
A high proportion of display element in cost is occupied in order to reduce use, some designs are proposed based on spectroscopical side
Formula, the light from display element is divided into two beams via the spectroscope of such as half-reflection and half-transmission and enters the visual system of right and left eyes,
But the drawbacks of aforesaid way, is it is clear that due to spectroscopical introducing, the volume of optical system can not become thinner, light loss
Become big, be unfavorable for the lightening of equipment, influence the usage experience of nearly eye display device.
The content of the invention
The present invention is intended to provide a kind of nearly eye display device of single image source dual-eye, it is realized based on free curved surface prism, only
In the case of using single Micro display element, coordinated by the position of effective optical surface and reflecting element, can realized good
Binocular vision experience, and there is ultra-thin volume, main body frame or common school can be attached to as the peripheral hardware of intermediate plate type
Positive glasses are present.
According to a kind of single nearly eye display device of image source dual-eye of the present invention, including：
One Micro display element；
First free curved surface prism and the second free curved surface prism, the first and second free curved surface prisms include at least one not
Continuous free form surface；
For receiving light that the Micro display element sends and reflexing to the first free curved surface prism positioned at left side
The first spherical reflector positioned at left side, and for receiving light that the Micro display element sends and reflexing to positioned at right side
The second free curved surface prism the second spherical reflector positioned at right side；
The Micro display element is located on the center line of the first and second free curved surface prisms, and display surface is in described
Line is set, relative and parallel with emergent pupil with first and second speculum；First and second spherical reflector it is anti-
The non-bulging lower edge position in first and second free curved surface prism of face lower edge position is penetrated, makes overall optical component
Thickness is determined by the first and second free curved surface prisms in the thickness on Micro display element direction.
According to a kind of specific embodiment, first free curved surface prism and the second free curved surface prism are relative to institute
State center line to be symmetrical arranged, its discontinuous free form surface included is towards the spherical reflector.
First and second spherical reflector is symmetric on the center line, discrete setting or is integrated and is set
Put.
Preferably, image light passes through in first free curved surface prism and the second free curved surface prism after triple reflection
The continuous surface outgoing of first or second free curved surface prism.
According to the nearly eye display device of the present invention, the profile of sheet can be formed as, and there is fixture；Micro display element
To be detachable.
Further, nearly eye display device of the invention also includes the controller that can be placed in external device, image file
Memory and power supply, external device may be electrically connected to Micro display element, to power and control to Micro display element
Image on Micro display element is shown.
External device may also include user interface and communication interface, to receive user instruction and be carried out with other equipment
Communication.
By setting controllable shutter elements to realize 3D display in the light path of the left and right sides.
In order to improve user's wear comfort, include that be formed as can be with wearing on center line in the profile of nearly eye display device
Person face type and change flexible portion depression.
According to the free curved surface prism of the present invention, there is frivolous advantage easy to install, and match somebody with somebody in the position of reflecting element
Under conjunction, the photosynthetic reason that can not expand the size of whole optical system and send the Micro display element as single image source is divided
Two free curved surface prisms in left and right are fitted on, the efficiency of light energy utilization is improved, the weight and volume of alleviator, shows so as to improve nearly eye
Show the practicality and comfort level of equipment, reduce the cost for realizing the various nearly eye display devices such as VR, AR.
Brief description of the drawings
Fig. 1 is the index path according to the nearly eye display device of first embodiment of the invention
Fig. 2 is the index path according to the nearly eye display device of second embodiment of the invention
Fig. 3 is according to a kind of index path of the nearly eye display device of variation of the present invention
Fig. 4 is that the system block diagram after external device is electrically connected according to the nearly eye display device of the present invention
Embodiment
Herein below refer to the attached drawing and the structure of free curved surface prism etc. is discussed in detail the reality of the specific implementation present invention
Border example.The present invention can be embodied in many different forms and should not be construed as limited by each embodiment set forth herein.And
It is to provide these embodiments and make it that the disclosure is fully and complete, and this hair is comprehensively passed on to those skilled in the art
Bright design.In addition, the feature in each embodiment can also combine in the way of outside following embodiments, the skill after combination
Art scheme is still fallen within the scope of the present application.
First embodiment
As described in Figure 1, the sectional view of the nearly eye display device 100 of single image source dual-eye of the first embodiment of the present invention, it is wrapped
Include a Micro display element 1I, and two sets of visual systems positioned at the left and right sides, it is possible to understand that, two sets of left and right mesh
Optometry system is symmetric on Micro display element 1I central shaft O, Micro display element 1I central shaft O and left and right
The center line of two sets of visual systems coincides.Hereinafter, by using the visual optical in left side as object is specifically described, this is illustrated
The specific embodiment of invention.
The visual system in left side includes the first free curved surface prism and be oppositely arranged with Micro display element first
Speculum, the first speculum are the 3rd free curved surface prism, and the first free curved surface prism and the 3rd free curved surface prism include 3
Individual optical surface.For ease of expression, using inverse optical path direction, by human eye direction to Micro display element, light is via optical surface 11L
The first free curved surface prism is transmitted into, incides and optical surface 11L is reflected back on optical surface 12L, and on optical surface 11L again
Experiences total internal reflection reaches optical surface 13L, is transmitted through optical surface 14L and enters the 3rd free curved surface prism, then via optical surface 15L
Total internal reflection is passed through after being reflected again on optical surface 16L and injected to by optical surface 15L up to miniature aobvious to optical surface 16L
Show on device 1I.Wherein optical surface 12L, 13L, 15L, 16L focal power is just, optical surface 11L, 14L focal power is negative.
It will be appreciated by those skilled in the art that, visual system and the left side on right side are to be symmetrical arranged, including second
With the 4th free curved surface prism, each optical surface 11R-16R and 11L-16L is oppositely arranged, and is had the function that consistent.First freely
Plane of incidence 11L, 11R face human eye of curved surface prism and the second free curved surface prism is set, and micro-display 1I is located at two centers
And the emergent pupil phase of the optical system of (or the second, the 4th free curved surface prism is formed) is formed with the first, the 3rd free curved surface prism
It is parallel.In order to avoid the influence of other light in visual field, diaphragm G can be added, diaphragm G can be located at going out for whole optical system
Pupil opening position.
Further, when the first embodiment of the present invention is used as AR class display devices, can also further comprise positioned at the
Wedge-shaped compensating prism above one free curved surface prism, compensating prism include outer surface 17L, the wedge that optical surface 12L and 17L are formed
Shape prism and the first free curved surface prism form an afocal system to extraneous throw light, and half is now coated with 12L, 12R
Anti- pellicle, total reflection film is coated with 16L, 16R, ambient enters wedge-shaped compensating prism via 17L, saturating in optical surface 12L
Human eye is transmitted into further across optical surface 11L after penetrating, it is extraneous due to the compensating action of the 12L and 17L prism wedges formed
It is unaffected that scene light enters human eye.
For the convenient needs for manufacturing and installing, each free curved surface prism of the invention is also possible that other surfaces, but
In view of this kind of surface does not generally possess the effect of optical transmission or reflection and is carried out the processing such as sanding, not as this hair
Optical surface in bright is discussed.
It will be appreciated by those skilled in the art that, in the optical surface 11L and 11R in face of eyes of user, elimination can be coated with
The protecting film of harmful light, to avoid the injury to human eyesight.And when eye display device near as simple VR classes, in light
Face 12L and 12R outer side surface can be coated with reflectance coating, it is ensured that the efficiency of light total reflection, and effectively prevent extraneous light from not entering
Enter inside free curved surface prism, avoid influence of the veiling glare to display effect.
Each optical surface parameter according to a first embodiment of the present invention can represent by table 1 below -1 and table 1-2,
| Surface markers | Surface type | Radius | Material | X is eccentric | Y is eccentric | Z is eccentric | Alpha is tilted |
| Diaphragm G | Sphere | Infinitely | 0 | 0 | 0 | 0 | |
| 11 | Sphere | -1000 | PMMA | 0 | 0.000 | 37.218 | -3.000 |
| 12 | XY multinomials | -48.9221 | PMMA | 0 | 0.000 | 42.100 | -31.355 |
| 13 | Sphere | -56.6915 | 0 | 14.717 | 41.846 | 33.057 | |
| 14 | Sphere | -20 | PMMA | 0 | 17.842 | 42.977 | 81.506 |
| 15 | Sphere | -55.0243 | PMMA | 0 | 23.556 | 44.627 | 16.256 |
| 16 | XY multinomials | 8.704021 | PMMA | 0 | 28.386 | 39.144 | -11.982 |
| Display element | Sphere | Infinitely | 0 | 32.000 | 52.207 | 0.000 | |
| 17 | Sphere | -1000 | PMMA | 0 | 0.000 | 46.218 | -3.000 |
Table 1-1
Wherein surface 12 and surface 16 are the Free Surface of XY polynomials, and each term coefficient is as shown in table 1-2：
Table 1-2
Second embodiment
Similar with first embodiment, the second embodiment of the present invention is as shown in Fig. 2 also include first to fourth free form surface
Prism, illustrate by taking left side as an example, the first free curved surface prism and the 3rd free form surface rib on the left of Micro display element 2I
Mirror includes 3 optical surfaces.For ease of expression, using inverse optical path direction, by human eye direction to Micro display element, light via
Optical surface 21L is transmitted into the first free curved surface prism, incides and optical surface 21L is totally reflected back on optical surface 22L, and in optics
Anti- raw total internal reflection reaches optical surface 23L again on the 21L of face, is transmitted through optical surface 24L and enters the 3rd free curved surface prism, then passes through
By optical surface 25L total internal reflections to optical surface 26L, through being penetrated by optical surface 25L after being totally reflected again on optical surface 26L
Go out to reach on miniscope 2I.Unlike first embodiment, second is the third and fourth free form surface in embodiment
Prism is formed as one, or respectively formed after gluing be integrated, be aligned when being easily installed.
Each optical surface parameter according to a second embodiment of the present invention can represent by table 2 below -1 and table 2-2,
| Surface type | Radius | Material | X is eccentric | Y is eccentric | Z is eccentric | Alpha is tilted | |
| Diaphragm | Sphere | Infinitely | 0 | 0 | 0 | 0 | |
| 21 | Sphere | 243.1243 | PMMA | 0 | 0.000 | 37.113 | -2.085 |
| 22 | XY multinomials | -59.7016 | PMMA | 0 | 0.000 | 42.209 | -32.456 |
| 23 | Sphere | -24.5515 | 0 | 15.108 | 41.533 | 47.129 | |
| 24 | Sphere | -20 | PMMA | 0 | 18.060 | 43.234 | 87.684 |
| 25 | Sphere | -142.2 | PMMA | 0 | 23.324 | 45.194 | 14.177 |
| 26 | XY multinomials | 10.22588 | PMMA | 0 | 28.302 | 39.512 | -12.831 |
| Display element | Sphere | Infinitely | 0 | 32.000 | 53.170 | 0.000 |
Table 2-1
Wherein surface 22 and surface 26 are the Free Surface of XY polynomials, and each term coefficient is as shown in table 2-2
Table 2-2
According to the abovementioned embodiments of the present invention, when using own curved surface prism as speculum, its lower edge does not protrude
In the lower edge of the first and second free curved surface prisms, such setting can make the thickness of overall optical component by first and
Two free curved surface prisms determine in the thickness on Micro display element direction, and are respectively implemented according to the above-mentioned of the present invention
Mode, the preferable level that can reach about 8mm of thickness (as shown in dotted line in Fig. 1-2) of the first and second free curved surface prisms,
The lightening of device is realized, in consideration of it, its weight could be arranged to the intermediate plate form of peripheral hardware completely, clip-like etc. can be passed through
Structure is attached on all kinds of correcting spectacle lens of user's wearing (such as user with myopia correction glasses), can't be
User increases excessive burden, so as to be applied to scene with a greater variety.
Particularly, due to two speculums in the plane of incidence in face of Micro display element towards tilted, in falling " eight " word
Shape, sufficient space, described miniature display can be provided while device is lightening for the installation of Micro display element
Element can select from all kinds of Micro display elements with high PPI, including but not limited to LCD type, LCOS types, OLED types,
, can be by tearing open when the technology development of display element and such display element can be used as modular installation to exist
Unload and changed as modular display element to realize, so that the nearly eye display device of the present invention can be all the time using most advanced
Display element, if optical system is customized by user according to its visual demand, such length being provided with beneficial to device
Phase uses.
To ensure picture quality, in first to fourth free curved surface prism of the various embodiments described above, at least all include one
By the Free Surface of xy polynomials, and preferably, in the first and second free curved surface prisms, in Micro display element
The face 12,22,32,42,52 of side total internal reflection be Free Surface, in the third and fourth free curved surface prism, remote
The face 16,26,36,46,56 that Micro display element side performs total internal reflection is Free Surface.Further, will can own
Surface all sets the Free Surface of xy polynomials preferably to optimize picture quality, but corresponding manufacturing cost will carry therewith
It is high.
Variation
Different according to the abovementioned embodiments of the present invention, the speculum set in face of Micro display element 3I is anti-for a pair of spheres
Mirror is penetrated, its reflecting surface is sphere and face Micro display element is set.Stated using inverse optical path direction, by human eye direction to miniature
Display element, light are transmitted into the first free curved surface prism via optical surface 31L, incide to be all-trans on optical surface 32L and are emitted back towards
Optical surface 31L, and anti-raw total internal reflection occurs on optical surface 31L and arrives again at optical surface 32L, through light after 32L is totally reflected
Face 33L transmits the first free curved surface prism to spherical reflector 34L reflecting surface, is totally reflected to through optical surface 34L micro-
On escope 3I.According to above-mentioned first, second free curved surface prism of variation of the present invention, Micro display element 3I is sent
After image light freedom of entry curved surface prism, 3 secondary reflections are carried out, also, optical surface 33L is arranged to noncontinuous surface to accommodate
Receive the edge of image light and the spherical reflector reflected, to improve the reflective surface area of image light.
Due to using above-mentioned setting during spherical reflector, the distance of Micro display element 6I and spherical reflector can be by
Further compression, and because the weight of spherical reflector may be typically less than prism, can also further reduce the weight of device
Amount, but it must be taken into account that the installation difficulty of spherical reflector is slightly above prism.
For the nearly eye display device of the present invention when specifically used, Micro display element is as image display, its controller,
Image file memory, power supply etc. can be placed in external device, as shown in figure 4, external device is micro- by being electrically connected to
Type display element, to be powered to Micro display element and control the image on Micro display element to show.
Further, external device may also include user interface and communication interface, to receive user instruction and and its
He is communicated at equipment.Under a kind of form, external device can be such as PC, tablet personal computer, the universal meter such as smart mobile phone
Equipment is calculated, various functions and application thereon are used equally for the display device of the present invention to be shown.By taking smart mobile phone as an example, its
Including such as general processor including the memory of application and non-volatile memories, processor can realize communication and any number
The application of amount is simultaneously used as controller.Memory can include the non-volatile and classes of semiconductors memory of volatile memory
Part.User interface for operation can realize the function of user interface, communication interface such as wireless communication interface WIFI, indigo plant
Tooth, NFC etc., and various known finite communication interfaces, can be communicated with miscellaneous equipment, receive the data from miscellaneous equipment
Information.
Under another form, the components such as special controller and memory can be used in external device, more preferable to realize
Display performance and the function of developing personalization, such as various commercial Applications.
When the Micro display element supports 3D display, nearly eye display device of the invention can support 3D display；Or
By adding controllable shutter elements in the light path of the left and right sides, and realize 3D display.
According to the nearly eye display device of the present invention, realized based on the prism comprising Free Surface good under single image source
Binocular displays effect, device are frivolous.As a kind of optional mode, when the nearly eye display device of the present invention has the profile of glasses
And when being worn on user head, Micro display element is located exactly at the bridge of the nose, and the first and second discrete speculums now may be used
The both sides for the bridge of the nose that is placed in effectively using the profile of user's face, the profile of nearly eye display device is formed as at the bridge of the nose can
The flexible portion depression changed with wearer face type, makes Micro display element also can effectively press close to user's face, has to realize
The product appearance of design sense provides advantage.
Described above is only embodiments of the invention, not makees any formal limitation to the structure of the present invention.
Any simple modification, equivalent change and modification that every technical spirit according to the present invention is made to above example, still belongs to
In the range of technical scheme.
Claims (10)
1. a kind of nearly eye display device of single image source dual-eye, including：
One Micro display element；
First free curved surface prism and the second free curved surface prism, first and second free curved surface prism include at least one not
Continuous free form surface；
For receiving light that the Micro display element sends and reflexing to being located at for the first free curved surface prism positioned at left side
First spherical reflector in left side,
For receiving light that the Micro display element sends and reflexing to being located at for the second free curved surface prism positioned at right side
Second spherical reflector on right side,
The Micro display element is located on the center line of the first and second free curved surface prisms, and display surface is set perpendicular to the center line
Put, it is relative and parallel with emergent pupil with first and second speculum；The reflecting surface of first and second spherical reflector
The non-bulging lower edge position in first and second free curved surface prism of lower edge position, make the thickness of overall optical component
Determined by the first and second free curved surface prisms in the thickness on Micro display element direction.
2. nearly eye display device as claimed in claim 1, it is characterised in that first free curved surface prism and second is freely
Curved surface prism is symmetrical arranged relative to the center line, and its discontinuous free form surface (33L) included is towards the spheric reflection
Mirror.
3. eye display device as claimed in claim 2 nearly, it is characterised in that image light in first free curved surface prism and
Continuous surface (31L) outgoing through the first or second free curved surface prism after triple reflection in second free curved surface prism.
4. the nearly eye display device as described in claim 1-4 is any, it is characterised in that first and second spherical reflector
It is symmetric on the center line, discrete setting or the setting that is integrated.
5. nearly eye display device as claimed in claim 1, it is characterised in that the nearly eye display device is formed as the outer of sheet
Shape, and there is fixture.
6. nearly eye display device as claimed in claim 1, it is characterised in that the Micro display element is dismountable.
7. nearly eye display device as claimed in claim 1, it is characterised in that also include the control that can be placed in external device
Device, image file memory and power supply, external device may be electrically connected to Micro display element, to Micro display element
Power and control the image on Micro display element to show.
8. eye display device as claimed in claim 7 nearly, it is characterised in that the external device may also include user interface and
Communication interface, to receive user instruction and be communicated with other equipment.
9. nearly eye display device as claimed in claim 8, it is characterised in that controllable by being set in the light path of the left and right sides
The shutter elements of system are to realize 3D display.
10. nearly eye display device as claimed in claim 1, it is characterised in that the profile of the nearly eye display device is in center line
It is upper to include being formed as the flexible portion depression that with wearer face type change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711118412.5A CN107765434B (en) | 2016-02-23 | 2016-02-23 | Single-image-source binocular near-to-eye display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711118412.5A CN107765434B (en) | 2016-02-23 | 2016-02-23 | Single-image-source binocular near-to-eye display device |
| CN201610098482.8A CN105572879B (en) | 2016-02-23 | 2016-02-23 | A kind of nearly eye display device of single image source dual-eye |
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| CN201610098482.8A Division CN105572879B (en) | 2016-02-23 | 2016-02-23 | A kind of nearly eye display device of single image source dual-eye |
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| CN107765434A true CN107765434A (en) | 2018-03-06 |
| CN107765434B CN107765434B (en) | 2021-01-01 |
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| CN201711118412.5A Active CN107765434B (en) | 2016-02-23 | 2016-02-23 | Single-image-source binocular near-to-eye display device |
| CN201610098482.8A Active CN105572879B (en) | 2016-02-23 | 2016-02-23 | A kind of nearly eye display device of single image source dual-eye |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107976807A (en) * | 2016-11-25 | 2018-05-01 | 上海渺视光学科技有限公司 | A kind of augmented reality formula head-mounted display and its light channel structure |
| CN108319015B (en) * | 2017-04-21 | 2023-02-10 | 北京耐德佳显示技术有限公司 | Retina projection type near-to-eye display device |
| WO2021068855A1 (en) * | 2019-10-10 | 2021-04-15 | 华为技术有限公司 | Display device module and head mounted display device |
| CN113341577B (en) * | 2021-08-06 | 2021-12-10 | 深圳珑璟光电科技有限公司 | Binocular near-to-eye display equipment |
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| JP2001177785A (en) * | 1999-12-17 | 2001-06-29 | Minolta Co Ltd | Head-mounted video display device |
| JP2001235705A (en) * | 2000-02-25 | 2001-08-31 | Olympus Optical Co Ltd | Picture display device |
| CN1343319A (en) * | 2000-01-06 | 2002-04-03 | 奥林巴斯光学工业株式会社 | Image display |
| KR20040005031A (en) * | 2002-07-08 | 2004-01-16 | (주)드리맥스 | Optical system using single display device for head mounted display |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1216308C (en) * | 2002-02-02 | 2005-08-24 | 王小光 | Glasses for watching TV and scene |
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- 2016-02-23 CN CN201711118412.5A patent/CN107765434B/en active Active
- 2016-02-23 CN CN201610098482.8A patent/CN105572879B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001177785A (en) * | 1999-12-17 | 2001-06-29 | Minolta Co Ltd | Head-mounted video display device |
| CN1343319A (en) * | 2000-01-06 | 2002-04-03 | 奥林巴斯光学工业株式会社 | Image display |
| JP2001235705A (en) * | 2000-02-25 | 2001-08-31 | Olympus Optical Co Ltd | Picture display device |
| KR20040005031A (en) * | 2002-07-08 | 2004-01-16 | (주)드리맥스 | Optical system using single display device for head mounted display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105572879A (en) | 2016-05-11 |
| CN107765434B (en) | 2021-01-01 |
| CN105572879B (en) | 2017-12-22 |
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