CN105700146B - Head-mounted type image display device - Google Patents
Head-mounted type image display device Download PDFInfo
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- CN105700146B CN105700146B CN201610127004.5A CN201610127004A CN105700146B CN 105700146 B CN105700146 B CN 105700146B CN 201610127004 A CN201610127004 A CN 201610127004A CN 105700146 B CN105700146 B CN 105700146B
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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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- Optics & Photonics (AREA)
Abstract
The present invention discloses a head-mounted type image display device, which includes a light-passing region, an image display, a first optical element array, a second optical element and a third optical element. The image display, the first optical element array, the second optical element and the third optical element are arranged in the light-passing region. An image signal displayed on the image display is processed by the first optical element array to form a first 4D light field and a second 4D light field. The first 4D light field is reflected by the second optical element to enter one eye of a wearer, and a first three-dimensional virtual image is formed in front of the sight of the wearer. The second 4D light field is processed by the third optical element to be reflected into the other eye of the wearer. Meanwhile, a second three-dimensional virtual image is formed in front of the sight of the wearer. The first three-dimensional virtual image and the second three-dimensional virtual image are coincident with each other. According to the technical scheme of the invention, the head-mounted type image display device is provided with only one image display device, thus being low in manufacturing cost, light in weight and portable. Moreover, the three-dimensional projection display is 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 scientific and technical development, the application of head-mounted display apparatus is more and more extensive.Show being applied to augmented reality
When showing in technology, need head-mounted display apparatus to have 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 the wear-type of holographic grating and 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 technology realizes 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 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 becomes
This is 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
Real display technology field problem demanding prompt solution by force.
Content of the invention
The invention provides a kind of head-mounted type image display device, solve 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, comprising: thang-kng region and
Image display in thang-kng region, the first array of optical elements, the second optical element and the 3rd optical element；Wherein,
The picture signal that image display shows forms a 4d light field and the 2nd 4d light field after processing through the first array of optical elements, the
One 4d light field reflects through the second optical element in an eye of wearer, and it is three-dimensional to form first in front of the sight line of wearer
The virtual image, after the 2nd 4d light field is processed through the 3rd optical element, reflects in the another eye of wearer, and the sight line in wearer
Front forms the second stereo virtual；Wherein, the first stereo virtual and the second stereo virtual overlap.
Wherein, this head-mounted type image display device also includes the 4th optical element, the picture signal that image display shows
Form an inverted real image after the 4th optical element reflection, the first array of optical elements forms a 4d to after inverted real image process
Light field and the 2nd 4d light field.
Wherein, the first array of optical elements includes: positive positive meniscus lens array and be arranged at positive positive meniscus lens battle array
Semi-transparent semi-reflecting film on row concave surface.
Wherein, the first array of optical elements includes: the first convex lens array, and possesses the concave mirror of semi-transparent semi-reflecting function
Array；Wherein, concave surface lens array is located between the first convex lens array and image display.
Wherein, the first array of optical elements includes: the first planoconvex lenss array, the second planoconvex lenss array, and first is flat
The transflective layer of filling between convex lens array and the second planoconvex lenss array.
Wherein, the first array of optical elements includes: semi-transparent semi-reflecting lens array, and is arranged at semi-transparent semi-reflecting lens array both sides
The second convex lens array and the 3rd convex lens array.
Wherein, the second optical element includes the first semi-transparent semi-reflecting lens, and the first semi-transparent semi-reflecting lens will be through the first optical element battle array
Arrange the 4d light field reflecting to form to reflex in an eye of wearer, and it is three-dimensional to form first in front of the sight line of wearer
The virtual image.
Wherein, the 3rd optical element includes the second semi-transparent semi-reflecting lens and plane mirror；Wherein, plane mirror will be through the first optics unit
After the 2nd 4d light field reflection that part array transmission is formed, then reflect in the another eye of wearer through the second semi-transparent semi-reflecting lens,
And form the second stereo virtual 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 4th optical element, the 4th optical element includes entirely
Reflection the first concave mirror, image display be located at the first thang-kng region in, the first array of optical elements, the second optical element and
3rd optical element is respectively positioned in the second thang-kng region；The picture signal that image display shows is after the first concave mirror
Form an inverted real image in the second thang-kng region.
Wherein, the imaging formula of the first concave mirror is:
In formula, a represents the distance between the first concave mirror and image display, and b represents the first concave mirror and inverted real image
The distance between, faRepresent the focal length of the first concave mirror；Wherein, image display be located at the first concave mirror two focus length at or two
Out-of-focus again.
The beneficial effect of embodiments of the invention is:
The head-mounted type image display device of the present invention is by having the place of the first array of optical elements of semi-transparent semi-reflecting function
Reason forms a 4d light field and the 2nd 4d light field, and is projected to respectively in the eyes of wearer, with front of the sight line of wearer
Form the stereo virtual amplifying, this device only needs an image display device, low cost of manufacture, frivolous portable, and can be real
Existing stereo projection display.
Brief description
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；
Fig. 5 represents the structural representation one of first array of optical elements of the present invention；
Fig. 6 represents the structural representation two of first array of optical elements of the present invention；
Fig. 7 represents the structural representation three of first array of optical elements of the present invention；
Fig. 8 represents the structural representation four of first array of optical elements of the present invention.
Wherein in figure: 1, thang-kng region, 2, image display, the 3, first array of optical elements, the 4, second optical element, 5,
3rd optical element, the 6, the 4th optical element；
30th, positive positive meniscus lens array, 31, semi-transparent semi-reflecting film, the 32, first convex lens array, 33, concave surface lens array,
34th, the first planoconvex lenss array, the 35, second planoconvex lenss array, 36, transflective layer, 37, semi-transparent semi-reflecting lens array, 38,
Two convex lens array, the 39, the 3rd convex lens array；
40th, the first semi-transparent semi-reflecting lens；
50th, the second semi-transparent semi-reflecting lens, 51, plane mirror；
60th, the first concave mirror；
101st, the first stereo virtual, the 102, second stereo virtual, 103, inverted real image；
201st, a 4d light field, the 202, the 2nd 4d light field.
Specific embodiment
It is more fully described the exemplary embodiment of the present invention below with reference to accompanying drawings.Although showing the present invention 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, these embodiments are provided to be 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.
As shown in Figures 1 to 4, The embodiment provides a kind of head-mounted type image display device, comprising: transparent zone
Domain 1 and the image display 2 being located in thang-kng region 1 and have the first array of optical elements 3 of semi-transparent semi-reflecting function, the
Two optical elements 4 and the 3rd optical element 5；Wherein, the picture signal of image display 2 display is through the first array of optical elements 3
Form a 4d light field 201 and the 2nd 4d light field 202, a 4d light field 201 is reflected into wearing by the second optical element 4 after process
In one eye of person, and form the first stereo virtual 101 in front of the sight line of wearer, the 3rd optical element 5 is to the 2nd 4d light
Field 202 process back reflections enter in the another eye of wearer, and form the second stereo virtual 102 in front of the sight line of wearer；
Wherein, the first stereo virtual 101 and the second stereo virtual 102 are completely superposed.
Wherein, the picture signal of image display 2 display is respectively through the first array of optical elements 3, the second optical element 4
With left eye and the right eye projecting after the 3rd optical element 5 into wearer, and form virtual solid in front of the sight line of wearer
Image.Wherein, the thang-kng region 1 of this head-mounted type image display device can be hollow free space or solid
Transparent material.Certainly, if being applied to the vr display field of non-transparent effect, can be to the outer surface in thang-kng region 1
Do opaque process, to reach optimal feeling of immersion experience.Image display 2 be miniature display screen curtain, be mainly used in throw in and
The display device such as display image or video information, such as micro projector, laser, led screen, dmd.This wear-type image display dress
The process putting the first array of optical elements 3 by having semi-transparent semi-reflecting function forms a 4d light field and the 2nd 4d light field, and
It is projected to respectively in the eyes of wearer, to form the stereo virtual of amplification in front of the sight line of wearer, this device only needs
One image display device, low cost of manufacture, frivolous portable, and it is capable of stereo projection display.
Wherein, the first array of optical elements 3 is array of optical elements or the single element array possessing semi-transparent semi-reflecting function,
As shown in figure 5, the first array of optical elements 3 includes: positive positive meniscus lens array 30 and be arranged at positive positive meniscus lens battle array
Semi-transparent semi-reflecting film 31 on row 30 concave surface, wherein, semi-transparent semi-reflecting film 31 is plated on the concave surface of positive positive meniscus lens array 30, the
One array of optical elements 3 makes single element array, and whole device can be made compact frivolous.When light enters from semi-transparent semi-reflecting film 31 side
When penetrating, the semi-transparent semi-reflecting film 31 meeting a part of light of transmission simultaneously reflects a part of light formation the first 4d light field, and transmitted ray passes through
Positive positive meniscus lens array 30 refraction forms the 2nd 4d light field, and wherein, reflection light meets concave surface through semi-transparent semi-reflecting film 31
Mirror image-forming principle, transmitted ray meets convex lens array image-forming principle through the refraction of positive positive meniscus lens array 30.Wherein, just
Positive meniscus lens array 30 is the microlens array of two-dimensional directional, and each unit of the first array of optical elements 3 corresponds to figure
Each pixel as display 2.
Further, this first array of optical elements 3 can be made into the array junctions of as shown in Figure 6 two independent firmware
Structure, that is, the first array of optical elements 3 include: the first convex lens array 32, and possess the concave surface lens array of semi-transparent semi-reflecting function
33；Wherein, concave surface lens array 33 is located between the first convex lens array 32 and image display 2, the wherein first convex lens array
32 shape can have any shape, and it is not done with concrete shape and limits.
Further, this first array of optical elements 3 also can make three balsaming lenss structures as shown in Figure 7, specifically,
First array of optical elements 3 includes: the first planoconvex lenss array 34, the second planoconvex lenss array 35, and the first planoconvex lenss battle array
The transflective layer 36 of filling between row 34 and the second planoconvex lenss array 35.Wherein, the first planoconvex lenss array 34 and second
The planform of planoconvex lenss array 35 is identical, when light is incident from the second planoconvex lenss array 35 side, a part of light
Line is reflected by transflective layer 36 after the second planoconvex lenss array 35 refraction, then goes out after the second planoconvex lenss array 35 refraction
Penetrate, this process is equivalent to the convex lens array through a piece of standard shape；And another part light is through the second planoconvex lenss
By transflective layer 36 transmission after array 35 refraction, in outgoing after the first planoconvex lenss array 34 refraction, its process also phase
When in the convex lens array through a piece of standard shape, it is right so can be formed in the left and right sides of the first array of optical elements 3
The 4d light field answered.
Further, the first array of optical elements 3 also makes the array structure of as shown in Figure 8 three firmware, concrete bag
Include: semi-transparent semi-reflecting lens array 37, and be arranged at semi-transparent semi-reflecting lens array 37 both sides the second convex lens array 38 and the 3rd convex
Lens arra 39.Wherein, the second convex lens array 38 and the 3rd convex lens array 39 can have any shape, and it does not done specifically
Shape limits.
Wherein, as shown in Figures 1 to 4, optical module also includes the 4th optical element 6, the image of image display 2 display
Signal forms inverted real image 103 after the 4th optical element 6 reflection, after the first array of optical elements 3 is to inverted real image 103 process
Form a 4d light field 201 and the 2nd 4d light field 202.
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 4th optical element 6, the 4th optical element 6
Including the first concave mirror 60 of total reflection, image display 2 is located in the first thang-kng region, the first array of optical elements 3, second
Optical element 4 and the 3rd optical element 5 are respectively positioned in the second thang-kng region；The picture signal of image display 2 display is through the
Being reflected in the second thang-kng region of one concave mirror 60 forms an inverted real image 103.Additionally, the 4th optical element 6 is except permissible
Concave mirror structure, can one be plane mirror, the spherical reflector with fixed focal length, the deformable mirror of electric control focusing or
The composition element of plane mirror and zoom lens, if be that by light beam turn to, expand, the combination of imaging function saturating
Mirror, zoom lens or Varifocal mirror all can be used as the concrete structure forms of the 4th optical element 6.
Wherein, the second optical element 4 includes the first semi-transparent semi-reflecting lens 40, and the first semi-transparent semi-reflecting lens 40 will be through the first optics unit
The 4d light field 201 that part array 3 reflects to form reflexes in an eye of wearer, and is formed in front of the sight line of wearer
First stereo virtual 101.
Wherein, the 3rd optical element 5 includes the second semi-transparent semi-reflecting lens 50 and plane mirror 51；Wherein, plane mirror 51 will be through
One array of optical elements 3 transmission formed the 2nd 4d light field 202 reflect, the second semi-transparent semi-reflecting lens 50 by the 2nd 4d light field reflect into
In the another eye of wearer, and form the second stereo virtual 102 in front of the sight line of wearer.Wherein, according to concrete application
Scene is different, the first semi-transparent semi-reflecting lens 40 and the second semi-transparent semi-reflecting lens 50 can be glass material, polymeric material, membrane structure,
It is integrated in optical grating construction in optical crystal etc., its position can be adjusted according to wearer's interpupillary distance value.
Below in conjunction with accompanying drawing, light is propagated and imaging process is described further.As shown in Figures 1 to 4, image
Display 2 loads the picture signal play and shows, transmits, in the 4th optical element 6 (the first concave mirror in thang-kng region 1
60), under reflection, form an inverted real image 103, wherein, imaging formula meets concave mirror image-forming principle, particularly as follows:
In formula, a represents the distance between the first concave mirror 60 and image display 2, and b represents the first concave mirror 60 and stands upside down
The distance between real image 103, that is, the image distance being imaged, faRepresent the focal length of the first concave mirror 60；Wherein, image display 2 is located at
At first concave mirror 60 two focus length or outside two focus length, so can form that handstand etc. is big or the inverted real image 103 reducing that stands upside down.
Wherein, as the focal length f changing the first concave mirror 60aWhen, image distance b can be changed, and then change inverted real image 103 and the first optics unit
The distance between part array 3 c, ultimately results in inverted real image 103 closer or far from positive positive meniscus lens array 30.Inverted real image
103 and first the distance of array of optical elements 3 determine the angle of visual field of whole device, distance is less, and the angle of visual field is bigger, by adjusting
Save the focal length of the first concave mirror 60 and the position of image display 2, 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 semi-transparent semi-reflecting film 31, this
When a part of light reflect, there is transmission in a part of light, Fig. 3 show reflection photoimaging process, semi-transparent semi-reflecting film 31
Catoptric imaging principle be concave mirror image-forming principle, the light of inverted real image 103 dissipates after reflecting through semi-transparent semi-reflecting film 31, due to
Semi-transparent semi-reflecting film 31 is array structure, so under the reflection of semi-transparent semi-reflecting film 31, forming a 4d light field on the right side of it
201, diverging light is injected the first semi-transparent semi-reflecting lens 40 after reflecting through semi-transparent semi-reflecting film 31 by light, through the first semi-transparent semi-reflecting lens 40
Wearer's right eye is entered, thus forming the first stereo virtual 101 in front of the sight line of wearer after reflection.
As shown in figure 4, after thang-kng region 1 forms inverted real image 103, light beam continues to inject on semi-transparent semi-reflecting film 31, this
When a part of light reflect, there is transmission in a part of light, Fig. 4 is transmission photoimaging process, semi-transparent semi-reflecting film 31 saturating
Penetrating image-forming principle is convex lens array image-forming principle, and the distance between inverted real image 103 and first array of optical elements 3 are just
At one times of focal length of one lens unit of the first array of optical elements 3, the light of inverted real image 103 is through positive positive meniscus lens
Dissipate after array 30 refraction, form the 2nd 4d light field 202 in the left side of positive positive meniscus lens array 30, light is through positive falcate
After convex lens array 30 refraction, diverging light is injected plane mirror 51, formed in the left side of plane mirror 51 after the reflection through plane mirror 51
The 4d light field in opposite direction with the 2nd 4d light field 202, injects the light of plane mirror 51 through positive positive meniscus lens array 30, then
After reflection through plane mirror 51, inject in the second semi-transparent semi-reflecting lens 50, then the reflection through the second semi-transparent semi-reflecting lens 50
Enter wearer's left eye afterwards.
As shown in Figure 3 and Figure 4, the stereo virtual in order to ensure left eye and right eye is watched be completely superposed avoid 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 positive positive meniscus lens battle array
The focal length of row 30 is equal to the focal length of the concave mirror of semi-transparent semi-reflecting film 31；First stereo virtual 101 and the picture of the second stereo virtual 102
Away from equal, that is, the optical path distance entering eyes is equal.
To sum up, the picture signal of the image display 2 of this head-mounted type image display device, by having semi-transparent semi-reflecting function
The process of the first array of optical elements form a 4d light field and the 2nd 4d light field, and be projected to the eyes of wearer respectively
In, to form the stereo virtual of amplification in front of the sight line of wearer, this device only needs an image display device, is manufactured into
This low, frivolous portable, disclosure satisfy that angle of visual field demand, and be capable of stereo projection display.It is furthermore pointed out that this head
The formula image display device of wearing can make helmet-type outward appearance, also can make frame eyeglasses formula outward appearance.
Above-described is the preferred embodiment of the present invention it should be pointed out that the ordinary person for the art comes
Say, some improvements and modifications can also be made under the premise of without departing from principle of the present invention, these improvements and modifications also exist
In protection scope of the present invention.
Claims (10)
1. a kind of head-mounted type image display device it is characterised in that include: thang-kng region and be located at described thang-kng region in
Image display, the first array of optical elements, the second optical element and the 3rd optical element；Wherein, described image display
The picture signal of display formation the first 4d light field and the 2nd 4d light field after described first array of optical elements process, described first
4d light field reflects through described second optical element in an eye of wearer, and forms the in front of the sight line of described wearer
One stereo virtual, after described 2nd 4d light field is processed through described 3rd optical element, reflects the another eye into described wearer
In, and form the second stereo virtual in front of the sight line of described wearer；Wherein, described first stereo virtual and described second stands
Body void picture overlaps.
2. head-mounted type image display device according to claim 1 is it is characterised in that described head-mounted type image display device
Also include the 4th optical element, the picture signal that described image display shows forms one after described 4th optical element reflection
Inverted real image, the first array of optical elements forms a 4d light field and the 2nd 4d light field after described inverted real image is processed.
3. head-mounted type image display device according to claim 2 is it is characterised in that described first array of optical elements bag
Include:
Positive positive meniscus lens array and the semi-transparent semi-reflecting film being arranged on described positive positive meniscus lens array concave surface.
4. head-mounted type image display device according to claim 2 is it is characterised in that described first array of optical elements bag
Include: the first convex lens array, and possess the concave surface lens array of semi-transparent semi-reflecting function；Wherein, described concave surface lens array is located at institute
State between the first convex lens array and described image display.
5. head-mounted type image display device according to claim 2 is it is characterised in that described first array of optical elements bag
Include: the first planoconvex lenss array, the second planoconvex lenss array, and described first planoconvex lenss array and described second planoconvex lenss
The transflective layer of filling between array.
6. head-mounted type image display device according to claim 2 is it is characterised in that described first array of optical elements bag
Include: semi-transparent semi-reflecting lens array, and it is arranged at the second convex lens array and the 3rd convex lens of described semi-transparent semi-reflecting lens array both sides
Lens array.
7. the head-mounted type image display device according to any one of claim 3 to 6 is it is characterised in that described second optics
Element includes the first semi-transparent semi-reflecting lens, and described first semi-transparent semi-reflecting lens are by reflect to form through described first array of optical elements
One 4d light field reflexes in an eye of wearer, and forms the first stereo virtual in front of the sight line of described wearer.
8. head-mounted type image display device according to claim 7 is it is characterised in that described 3rd optical element includes
Two semi-transparent semi-reflecting lens and plane mirror；Wherein, the 2nd 4d that described plane mirror will be formed through described first array of optical elements transmission
After light field reflection, then reflect in the another eye of described wearer through described second semi-transparent semi-reflecting lens, and in described wearer
Sight line in front of form the second stereo virtual.
9. head-mounted type image display device according to claim 8 is it is characterised in that described thang-kng region includes mutually interconnecting
Lead to and the first thang-kng region at an angle and the second thang-kng region；Wherein, in described first thang-kng region and described second
The junction in thang-kng region is provided with the 4th optical element, and described 4th optical element includes the first concave mirror being totally reflected, institute
State image display to be located in described first thang-kng region, described first array of optical elements, described second optical element and institute
State the 3rd optical element to be respectively positioned in described second thang-kng region；The picture signal that described image display shows is through described
Form an inverted real image in described second thang-kng region after one concave mirror.
10. head-mounted type image display device according to claim 9 is it is characterised in that the imaging of described first concave mirror
Formula is:
In formula, a represents the distance between described first concave mirror and described image display, b represent described first concave mirror with
The distance between described inverted real image, faRepresent the focal length of described first concave mirror；
Wherein, described image display is located at described first concave mirror two focus length or outside two focus length.
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| US5003300A (en) * | 1987-07-27 | 1991-03-26 | Reflection Technology, Inc. | Head mounted display for miniature video display system |
| US5642221A (en) * | 1994-03-09 | 1997-06-24 | Optics 1, Inc. | Head mounted display system |
| US5751493A (en) * | 1996-11-15 | 1998-05-12 | Daewoo Electronics Co., Ltd. | Head-mounted display apparatus with a single image display device |
| US5808802A (en) * | 1996-11-15 | 1998-09-15 | Daewoo Electronics Co. Ltd. | Head-mounted display apparatus with a single image display device |
| CN103869467A (en) * | 2012-12-17 | 2014-06-18 | 联想(北京)有限公司 | Display device and wearable spectacle equipment |
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Effective date of registration: 20180727 Address after: 518054 Room 201, building A, 1 front Bay Road, Shenzhen Qianhai cooperation zone, Shenzhen, Guangdong Patentee after: SUPERD Co.,Ltd. Address before: 518053 H-1 Tung 101, overseas Chinese town, Nanshan District, Shenzhen, Guangdong. Patentee before: SHENZHEN SUPER PERFECT OPTICS Ltd. |
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