CN105700145B - Head-mounted image display device - Google Patents
Head-mounted image display device Download PDFInfo
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- CN105700145B CN105700145B CN201610124060.3A CN201610124060A CN105700145B CN 105700145 B CN105700145 B CN 105700145B CN 201610124060 A CN201610124060 A CN 201610124060A CN 105700145 B CN105700145 B CN 105700145B
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- 230000003287 optical effect Effects 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 238000003384 imaging method Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000007 visual effect Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
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Classifications
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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
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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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
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
- G02B2027/0134—Head-up displays characterised by optical features comprising binocular systems of stereoscopic type
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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
- G02B2027/0178—Eyeglass type
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a head-mounted image display device including a light-through area, an image display arranged in the light-through area, a first semitransparent mirror in which a micro-hole array is arranged, a first optical element, and a second optical element, wherein image signals displayed by the image display are reflected by the first semitransparent mirror to form a first 4D optical field. The image signals displayed by the image display are diffracted by the micro-hole array of the first semitransparent mirror to form a second 4D optical field. The first 4D optical field is reflected into one eye of a wearer through the first optical element, and a first three-dimensional virtual image is formed in front of the wearer sight. The second 4D optical field is reflected into the other eye of the wearer after the second optical element treats the second 4D optical field, and a second three-dimensional virtual image is formed in front of the wearer sight. The first three-dimensional virtual image and the second three-dimensional virtual image are superposed. The head-mounted image display device only needs one image display device. The manufacture cost is low, the head-mounted image display device is light and thin and portable, and the three-dimensional projection display can be realized.
Description
Technical field
The present invention relates to stereo display technique field, more particularly to a kind of head-mounted type image display device.
Background technology
With the development of science and technology, the application of head-mounted display apparatus is more and more extensive.Show augmented reality is applied to
When showing in technology, need head-mounted display apparatus that there is higher transparency and the larger angle of visual field, and do not enter to external world
The light of human eye produces deviation.
Head-mounted display apparatus of the prior art, for example with holographic grating and the wear-type of the Technology design of fiber waveguide
, complex manufacturing technology, high cost, there is dispersion in display device, and the angle of visual field is less；Using Wave guides with
Micro reflector technologies realize transparent effect display, and manufacture difficulty is big, high cost, visual field are limited；Using based on micro-
The intelligent glasses resolution of the integrative display fabrication techniques of lens array is low, aberration is big, do not have perspective function；Set using dual-projection
Standby+hologram with two concave mirrors structure realizes the intelligent glasses of transparent effect, and the function of focusing is fixed, do not possessed in the position of imaging surface, and into
This higher, equipment is more thick and heavy.
To sum up, how to control cost processing and manufacturing transparency and the angle of visual field to be satisfied by the head-mounted display apparatus of demand be to increase
Strong reality display technology field problem demanding prompt solution.
The content of the invention
The invention provides a kind of head-mounted type image display device, solves head-mounted display apparatus manufacture in prior art
High cost, and the less problem of the angle of visual field.
According to one aspect of the present invention, there is provided a kind of head-mounted type image display device, including：Thang-kng region, it is located at
Image display, the first semi-transparent semi-reflecting lens for offering array of orifices, the first optical element and the second optics in thang-kng region
Element；Wherein, the picture signal that image display shows forms a 4D light fields Jing after the reflection of the first semi-transparent semi-reflecting lens, and image shows
Show that the picture signal that device shows forms the 2nd 4D light fields, 4D light fields Jing Jing after the array of orifices diffraction of the first semi-transparent semi-reflecting lens
First optical element is reflected in an eye of wearer, and the first stereo virtual is formed in front of the sight line of wearer, and second
The second optical element of 4D light fields Jing processes back reflection and enters in the another eye of wearer, and the is formed in front of the sight line of wearer
Two stereo virtuals；Wherein, the first stereo virtual and the second stereo virtual overlap.
Wherein, the head-mounted type image display device also includes the 3rd optical element, the picture signal that image display shows
An inverted real image is formed Jing after the reflection of the 3rd optical element, the first semi-transparent semi-reflecting lens are to forming a 4D light after inverted real image process
Field and the 2nd 4D light fields.
Wherein, the first optical element includes the second semi-transparent semi-reflecting lens, and the second semi-transparent semi-reflecting lens are by the first semi-transparent semi-reflecting lens of Jing
The 4D light fields for reflecting to form are reflexed in an eye of wearer, and it is three-dimensional empty that first is formed in front of the sight line of wearer
Picture.
Wherein, the first optical element includes the 3rd semi-transparent semi-reflecting lens and plane mirror；Wherein, the aperture of the first semi-transparent semi-reflecting lens
The 2nd 4D light fields that array diffraction is formed are Jing after plane mirror reflection, then the 3rd semi-transparent semi-reflecting lens of Jing reflect the another into wearer
In eye, and the second stereo virtual is formed in front of the sight line of wearer.
Wherein, thang-kng region includes being interconnected and the first thang-kng region at an angle and the second thang-kng region；Its
In, the junction in the first thang-kng region and the second thang-kng region is provided with the 3rd optical element, the 3rd optical element includes entirely
The concave mirror of reflection, image display are located in the first thang-kng region, the first semi-transparent semi-reflecting lens, the first optical element and the second light
Learn element to be respectively positioned in the second thang-kng region；The picture signal that image display shows is after concave mirror in the second thang-kng
An inverted real image is formed in region.
Wherein, the imaging formula of concave mirror is：
In formula, a represents the distance between concave mirror and image display, b represent between concave mirror and inverted real image away from
From faRepresent the focal length of concave mirror；Wherein, image display is located at concave mirror two focus length or outside two focus length.
The beneficial effect of embodiments of the invention is：
The picture signal that the image display of the head-mounted type image display device of the present invention shows is by offering aperture battle array
A 4D light fields are formed after the first semi-transparent semi-reflecting lens reflection of row, picture signal Jing first that image display shows is semi-transparent semi-reflecting
The 2nd 4D light fields are formed after the array of orifices diffraction of mirror, and is projected in the eyes of wearer respectively, with the sight line in wearer
Front forms the stereo virtual for amplifying, and the device only needs an image display device, low cost of manufacture, frivolous portable, and energy
Stereo projection display is realized enough.
Description of the drawings
Fig. 1 represents the structural representation of the head-mounted type image display device of the present invention；
Fig. 2 represents the image-forming principle schematic diagram of the head-mounted type image display device of the present invention；
Fig. 3 represents the right eye imagery principle schematic of the head-mounted type image display device of the present invention；
Fig. 4 represents the left eye image-forming principle schematic diagram of the head-mounted type image display device of the present invention.
Wherein in figure：1st, thang-kng region, 2, image display, the 3, first semi-transparent semi-reflecting lens, the 4, first optical element, 5,
Two optical elements, the 6, the 3rd optical element；
31st, array of orifices；
41st, the second semi-transparent semi-reflecting lens；
51st, the 3rd semi-transparent semi-reflecting lens, 52, plane mirror；
61st, concave mirror；
101st, the first stereo virtual, the 102, second stereo virtual；
201st, a 4D light fields, the 202, the 2nd 4D light fields.
Specific embodiment
The exemplary embodiment of the present invention is more fully described below with reference to accompanying drawings.Although the present invention is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the present invention and should not be by embodiments set forth here
Limited.On the contrary, there is provided these embodiments are able to be best understood from the present invention, and can be by the scope of the present invention
Complete conveys to those skilled in the art.
Embodiment
As shown in Figures 1 to 4, The embodiment provides a kind of head-mounted type image display device, including：Transparent zone
Domain 1, and the image display 2 in thang-kng region 1, the first semi-transparent semi-reflecting lens 3 for offering array of orifices, the first optics
Element 4 and the second optical element 5；Wherein, the picture signal that image display 2 shows shape Jing after the reflection of the first semi-transparent semi-reflecting lens 3
Into a 4D light fields 201, the picture signal that image display 2 shows is Jing after 31 diffraction of array of orifices of the first semi-transparent semi-reflecting lens 3
The 2nd 4D light fields 202 are formed, a 4D light fields 201 are reflected in an eye of wearer by the first optical element 4, and are being worn
The first stereo virtual 101 is formed in front of the sight line of person, the second the 2nd 4D light fields 202 of optical element 5 pairs process back reflection and enter to wear
In the another eye of person, and the second stereo virtual 102 is formed in front of the sight line of wearer；Wherein, 101 He of the first stereo virtual
Second stereo virtual 102 is completely superposed.
Wherein, the picture signal that image display 2 shows passes through the first semi-transparent semi-reflecting lens for offering array of orifices respectively
3rd, the left eye and right eye into wearer is projected after the first optical element 4 and the second optical element 5, and in front of the sight line of wearer
Form virtual stereo-picture.Wherein, the thang-kng region 1 of the head-mounted type image display device can be hollow free space,
Can also be solid transparent material, can accomplish very frivolous.Certainly, if the VR for being applied to non-transparent effect shows
Field, can do opaque process to the outer surface in thang-kng region 1, to reach optimal feeling of immersion experience.Image display 2
For miniature display screen curtain, it is mainly used in throwing in and display image or video information, such as micro projector, laser, LED screen, DMD
Etc. display device.The picture signal that the image display of the head-mounted type image display device shows is by offering array of orifices
A 4D light fields are formed after the reflection of first semi-transparent semi-reflecting lens, the first semi-transparent semi-reflecting lens of picture signal Jing that image display shows
The 2nd 4D light fields are formed after array of orifices diffraction, and is projected in the eyes of wearer respectively, with front of the sight line of wearer
The stereo virtual for amplifying is formed, the device only needs an image display device, it is low cost of manufacture, frivolous portable, and can be real
Existing stereo projection display.Wherein, the array of orifices 31 of two-dimensional directional is provided with the first semi-transparent semi-reflecting lens 3, array of orifices 31
Each pixel of each aperture corresponding to image display 2.
Further, as shown in Figures 1 to 4, optical module also includes the 3rd optical element 6, what image display 2 showed
Picture signal forms inverted real image 103 Jing after the reflection of the 3rd optical element 6, and the first semi-transparent semi-reflecting lens 3 are processed to inverted real image 103
A 4D light fields 201 and the 2nd 4D light fields 202 are formed afterwards.
Further, thang-kng region 1 includes being interconnected and the first thang-kng region at an angle and the second transparent zone
Domain；Wherein, the junction in the first thang-kng region and the second thang-kng region is provided with the 3rd optical element 6, the 3rd optical element 6
Including the concave mirror 61 of total reflection, image display 2 is located in the first thang-kng region, the first semi-transparent semi-reflecting lens 3, the first optics unit
Part 4 and the second optical element 5 are respectively positioned in the second thang-kng region；The picture signal that image display 2 shows is through concave mirror 61
Be reflected in the second thang-kng region one inverted real image 103 of formation.Additionally, the 3rd optical element 6 is except being concave mirror knot
Structure, can one be plane mirror, the spherical reflector with fixed focal length, the deformable mirror of electric control focusing or plane reflection
The composition element of mirror and zoom lens, if be that by light beam turn to, expand, the compound lens of imaging function, zoom it is saturating
Mirror or Varifocal mirror can be used as the concrete structure forms of the 3rd optical element 6.
Wherein, the first optical element 4 includes the second semi-transparent semi-reflecting lens 41, and the second semi-transparent semi-reflecting lens 41 are by Jing first semi-transparent half
The 4D light fields 201 that anti-mirror 3 is reflected to form are reflexed in an eye of wearer, and is formed in front of the sight line of wearer
One stereo virtual 101.
Wherein, the second optical element 5 includes the 3rd semi-transparent semi-reflecting lens 51 and plane mirror 52；Wherein, plane mirror 52 is by Jing
The 2nd 4D light fields 202 that the array of orifices diffraction of one semi-transparent semi-reflecting lens 3 is formed reflect, and the 3rd semi-transparent semi-reflecting lens 51 are by the 2nd 4D light
Field 202 is reflected in the another eye of wearer, and the second stereo virtual 102 is formed in front of the sight line of wearer.Wherein, root
Different according to concrete application scene, the second semi-transparent semi-reflecting lens 41 and the 3rd semi-transparent semi-reflecting lens 51 can be glass material, polymeric material
Material, membrane structure, the optical grating construction being integrated in optical crystal etc., its position can be adjusted according to wearer's interpupillary distance value.
Light is propagated below in conjunction with accompanying drawing and imaging process is described further.As shown in Figures 1 to 4, image
The picture signal of the loading broadcasting of display 2 simultaneously shows, transmits, in the 3rd optical element 6 (concave mirror 61) in thang-kng region 1
Under reflection, an inverted real image 103 is formed, wherein, imaging formula meets concave mirror image-forming principle, specially：
In formula, a represents the distance between concave mirror 61 and image display 2, and b represents concave mirror 61 and inverted real image 103
The distance between, that is, the image distance being imaged, faRepresent the focal length of concave mirror 61；Wherein, image display 2 is located at 61 twice of concave mirror
At focal length or outside two focus length, handstand etc. can be so formed greatly or the inverted real image 103 for reducing that stands upside down.Wherein, when change concave surface
The focal length f of mirror 61aWhen, image distance b can be changed, and then change the distance between inverted real image 103 and the first semi-transparent semi-reflecting lens 3 c, most
Cause inverted real image 103 eventually closer or far from array of orifices 31.The distance of inverted real image 103 and the first semi-transparent semi-reflecting lens 3 is determined
The angle of visual field of whole device, distance are less, and the angle of visual field is bigger, by the focal length and image display 2 that adjust concave mirror 61
Position, it is possible to achieve the demand of the big angle of visual field.
As shown in figure 3, after thang-kng region 1 forms inverted real image 103, light beam continues to inject on the first semi-transparent semi-reflecting lens 3,
At this moment there is reflection in a part of light, and a part of light occurs diffraction by array of orifices 31, and Fig. 3 show reflection photoimaging mistake
Journey, the light of inverted real image 103 Jing after the reflection of the first semi-transparent semi-reflecting lens 3, due to having array of orifices on the first semi-transparent semi-reflecting lens 3
31, so under the reflection of the first semi-transparent semi-reflecting lens 3, a 4D light fields 201 are formed on the right side of which, light Jing first is semi-transparent
Semi-reflective mirror 3 launches light into the second semi-transparent semi-reflecting lens 41 after reflecting, and enters wear Jing after the reflection of the second semi-transparent semi-reflecting lens 41
Wearer's right eye, so as to the first stereo virtual 101 is formed in front of the sight line of wearer.
As shown in figure 4, after thang-kng region 1 forms inverted real image 103, light beam continues to inject on the first semi-transparent semi-reflecting lens 3,
At this moment there is reflection in a part of light, and a part of light occurs diffraction by array of orifices 31, and Fig. 4 is diffraction photoimaging process,
The light of inverted real image 103 is dissipated Jing after 31 diffraction of array of orifices, forms the 2nd 4D light fields 202 to the left, then through plane
Mirror 52 reflects, and is formed and the 2nd 4D light fields 202 4D light fields in opposite direction in the left side of plane mirror 52, then Jing the 3rd semi-transparent semi-reflecting
Wearer's left eye is entered after the reflection of mirror 51, so as to the second stereo virtual 102 is formed in front of the sight line of wearer.
As shown in Figure 3 and Figure 4, in order to ensure stereo virtual that left eye and right eye are watched be completely superposed avoid it is dizzy
Sense, that is, need to ensure that the first stereo virtual 101 and the second stereo virtual 102 are equal in magnitude, then need 101 He of the first stereo virtual
The image distance of the second stereo virtual 102 is equal, i.e., the optical path distance into eyes is equal.
To sum up, the picture signal that the image display 2 of the head-mounted type image display device shows passes through in thang-kng region 1
A 4D light fields 201, the figure that image display 2 shows are formed after the reflection of the first semi-transparent semi-reflecting lens 3 for offering array of orifices 31
As signal forms the 2nd 4D light fields 202 Jing after 31 diffraction of array of orifices of the first semi-transparent semi-reflecting lens 3, and wearer is projected to respectively
Eyes in, so that the stereo virtual of amplification is formed in front of the sight line of wearer, the device only needs an image display device,
It is low cost of manufacture, frivolous portable, and stereo projection display can be realized.It is furthermore pointed out that the wear-type image shows
Device can make helmet-type outward appearance, can also make frame eyeglasses formula outward appearance.
Above-described is the preferred embodiment of the present invention, it should be pointed out that for the ordinary person of the art comes
Say, some improvements and modifications can also be made under the premise of without departing from principle of the present invention, and these improvements and modifications also exist
In protection scope of the present invention.
Claims (6)
1. a kind of head-mounted type image display device, including：Thang-kng region, the image display in the thang-kng region, open
It is provided with the first semi-transparent semi-reflecting lens, the first optical element and second optical element of array of orifices；Wherein, described image display shows
The picture signal shown forms a 4D light fields after the first semi-transparent semi-reflecting lens reflection described in, first described in 4D light fields Jing
Optical element is reflected in an eye of wearer, and in front of the sight line of the wearer forms the first stereo virtual；Which is special
Levy and be, the picture signal that described image display shows forms after the array of orifices diffraction of the first semi-transparent semi-reflecting lens described in
Two 4D light fields, the second optical element described in the 2nd 4D light fields Jing process back reflection and enter in the another eye of the wearer,
And the second stereo virtual is formed in front of the sight line of the wearer；Wherein, first stereo virtual and described second three-dimensional
The virtual image overlaps.
2. head-mounted type image display device according to claim 1, it is characterised in that the head-mounted type image display device
Also include the 3rd optical element, the picture signal that described image display shows forms one after the 3rd optical element reflection described in
Inverted real image, first semi-transparent semi-reflecting lens are to forming a 4D light fields and the 2nd 4D light fields after inverted real image process.
3. head-mounted type image display device according to claim 2, it is characterised in that first optical element includes
Two semi-transparent semi-reflecting lens, the 4D light fields reflection that the first semi-transparent semi-reflecting lens described in Jing are reflected to form by second semi-transparent semi-reflecting lens
Into an eye of wearer, and the first stereo virtual is formed in front of the sight line of the wearer.
4. head-mounted type image display device according to claim 3, it is characterised in that first optical element includes
Three semi-transparent semi-reflecting lens and plane mirror；Wherein, the 2nd 4D light fields Jing that the array of orifices diffraction of first semi-transparent semi-reflecting lens is formed
After the plane mirror reflection, then the 3rd semi-transparent semi-reflecting lens are reflected in the another eye of the wearer, and described described in Jing
The second stereo virtual is formed in front of the sight line of wearer.
5. head-mounted type image display device according to claim 4, it is characterised in that the thang-kng region includes mutually interconnecting
Logical and the first thang-kng region at an angle and the second thang-kng region；Wherein, in the first thang-kng region and described second
The junction in thang-kng region is provided with the 3rd optical element, and the 3rd optical element includes the concave mirror being totally reflected, the figure
As display is located in the first thang-kng region, first semi-transparent semi-reflecting lens, first optical element and described second
Optical element is respectively positioned in the second thang-kng region；The picture signal that described image display shows is anti-through the concave mirror
An inverted real image is formed in the second thang-kng region after penetrating.
6. head-mounted type image display device according to claim 5, it is characterised in that the imaging formula of the concave mirror
For：
In formula, a represents the distance between the concave mirror and described image display, and b represents the concave mirror with the handstand
The distance between real image, faRepresent the focal length of the concave mirror；
Wherein, described image display is located at the concave mirror two focus length or outside two focus length.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610124060.3A CN105700145B (en) | 2016-03-04 | 2016-03-04 | Head-mounted image display device |
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| CN201610124060.3A CN105700145B (en) | 2016-03-04 | 2016-03-04 | Head-mounted image display device |
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| CN106526730B (en) * | 2016-11-21 | 2019-07-12 | 苏州苏大维格光电科技股份有限公司 | A kind of wide viewing angle waveguide eyeglass and production method and wear-type three-dimensional display apparatus |
| CN107065178B (en) * | 2016-12-21 | 2019-12-06 | 上海大学 | Holographic three-dimensional virtual reality glasses optical structure |
| CN109870820B (en) * | 2019-03-26 | 2023-10-17 | 成都工业学院 | Pinhole reflector array integrated imaging augmented reality device and method |
| CN110058415A (en) * | 2019-05-07 | 2019-07-26 | 武汉轻工大学 | Zoom Three-dimensional Display optical system and Helmet Mounted Display based on distorting lens |
| WO2021049694A1 (en) * | 2019-09-10 | 2021-03-18 | 엘지전자 주식회사 | Electronic device |
| CN110955049A (en) * | 2019-11-15 | 2020-04-03 | 北京理工大学 | Off-axis reflection type near-to-eye display system and method based on small hole array |
| CN111610634B (en) * | 2020-06-23 | 2022-05-27 | 京东方科技集团股份有限公司 | Display system based on four-dimensional light field and display method thereof |
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2016
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| CN105700145A (en) | 2016-06-22 |
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