CN207114878U - A kind of virtual reality goggles and wear display device - Google Patents
A kind of virtual reality goggles and wear display device Download PDFInfo
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- CN207114878U CN207114878U CN201720986924.2U CN201720986924U CN207114878U CN 207114878 U CN207114878 U CN 207114878U CN 201720986924 U CN201720986924 U CN 201720986924U CN 207114878 U CN207114878 U CN 207114878U
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Abstract
Optical technical field is the utility model is related to, a kind of virtual reality goggles is disclosed and wears display device, to improve the angle of visual field, strengthen the feeling of immersion of user.Wherein the incidence surface of virtual reality goggles is Fresnel Lenses face, the exiting surface of virtual reality goggles is aspherical, the effective light transmission bore of virtual reality goggles is more than 4 with the ratio of entrance pupil distance, and wherein entrance pupil distance is the human eye of user and the distance of aspherical central point.
Description
Technical field
It the utility model is related to optical technical field, more particularly to a kind of virtual reality goggles and wear real world devices.
Background technology
Virtual reality (VirtualReality, VR) technology is that the one kind proposed the 1980s is generated using computer
, it is can interacting, have feeling of immersion vision virtual environment, a variety of virtual environments can be generated as required, be widely used in
The fields such as urban planning, driving training, indoor design.Recently as computer computation ability and the hair of all types of sensors
Exhibition, all types of virtual implementing helmets have come across in the market, and it is made up of display screen or mobile phone and a pair of eyepieces substantially, people
Eye can see the image amplified on display screen by eyepiece, and the change of sensor sensing head part is adjusted in the display screen of left and right
Image so that human eye can see solid, have the visual pattern of interactivity.
Existing virtual reality goggles are regarded using biconvex spheric glass or the aspherical lens using biconvex, this eyepiece more
Rink corner is smaller, generally 60~100 degree, and the horizontal field of view angle of human eye is up to 120 degree, therefore easily sees eyeglass in viewing
Edge, the feeling of immersion of beholder is reduced, need to shorten the distance between eyeball and lens or increasing to obtain broader visual field
Add the size of lens.In order to meet that the focal length of the small form factor requirements eyeglass of the big angle of visual field and equipment can not be too big, otherwise equipment body
Greatly and again, too short focal length can cause enlargement ratio excessive to product again, and the lattice of screen is presented on people at the moment, reduces beholder
Experience sense.
Utility model content
The utility model provides a kind of virtual reality goggles and wears display device, and to improve the angle of visual field, enhancing makes
The feeling of immersion of user.
To reach above-mentioned purpose, the utility model provides following technical scheme：
The utility model provides a kind of virtual reality goggles, and the incidence surface of the virtual reality goggles is Fresnel Lenses
Face, the exiting surface of the virtual reality goggles is aspherical, effective light transmission bore and the entrance pupil distance of the virtual reality goggles
Ratio be more than 4, wherein entrance pupil distance for human eye and the aspherical central point of user distance.
Virtual reality goggles provided by the utility model, by using Fresnel Lenses face and the aspherical technology being combined
Means, and the ratio of the effective light transmission bore of virtual reality goggles and entrance pupil distance is set greater than 4, eyepiece can be improved
The angle of visual field, strengthen the feeling of immersion of user.
In some optional embodiments, the aspherical rise is less than or equal to 5.5 millimeters.
In some optional embodiments, the Fresnel Lenses face includes：Central area and fringe region, in described
Heart district domain is that the fringe region is tooth type structures to away from the aspherical raised convex lens.
In some optional embodiments, each tooth-shape structure includes multiple teeth, and the tooth depth of the multiple tooth is identical, and
The tooth depth of each tooth is 0.1 millimeter~0.2 millimeter.Such structure design, it is possible to reduce veiling glare, improve image contrast.
In some optional embodiments, the spacing of two teeth of arbitrary neighborhood is more than 0.17 millimeter.It is easy to processing and fabricating.
In some optional embodiments, thickness at the center of the virtual reality goggles is less than 7 millimeters, and/or,
The edge thickness of the virtual reality goggles is more than 2.4 millimeters.
In some optional embodiments, the focal length of the virtual reality goggles is 30~40 millimeters.Such design
Virtual reality goggles multiplication factor can be improved, between the enlargement ratios of the virtual reality goggles of the structure is 6 times~8 times.
In some optional embodiments, the entrance pupil distance of the virtual reality goggles is more than or equal to 13 millimeters and is less than
Equal to 30 millimeters.The practicality of virtual reality goggles can be improved so that virtual reality goggles had both gone for not wearing eye
The user of mirror, go for the user of wearing spectacles again.
In some optional embodiments, the external diameter of the virtual reality goggles is more than or equal to 61 millimeters and is less than or equal to
68 millimeters.The crowd that interpupillary distance is 55 millimeters~75 millimeters can be caused to adjust pupil when using above-mentioned virtual reality goggles
Away from just it can be seen that more visible picture.
In some optional embodiments, the aspherical vertex curvature radius is 78.94148069 millimeters, described
Aspherical circular cone coefficient is -30.70083790；And/or the vertex curvature radius in the Fresnel Lenses face for-
23.82862569 the circular cone coefficient in the Fresnel Lenses face is -0.49864480.The void being prepared using above-mentioned parameter
Intend reality goggles, there is the wider angle of visual field.
The utility model additionally provides one kind and wears display device, including two virtual realities described in any one as described above
Eyepiece.
In some optional embodiments, the centre-to-centre spacing of two virtual reality goggles is more than or equal to 61 millimeters and small
In equal to 69 millimeters.
Brief description of the drawings
Fig. 1 is a kind of structural representation of virtual reality goggles provided by the utility model；
Fig. 2 is the light path schematic diagram of virtual reality goggles provided by the utility model；
Fig. 3 a~Fig. 3 d are that letter is transmitted in modulation of the virtual reality goggles provided by the utility model under different entrance pupils distance
Numerical value figure；
Fig. 4 is another structural representation of virtual reality goggles provided by the utility model.
Reference：
1- Fresnel Lenses face 11- tooth type structures
12- convex lens 2- is aspherical
Thickness a2- edge thickness at a1- centers
R- external diameter h- rises
The distance between L- crowns and display surface
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with accompanying drawing to this practicality
It is new to be described in further detail, it is clear that described embodiment is only the utility model part of the embodiment, rather than
Whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work
Under the premise of all other embodiment for being obtained, belong to the scope of the utility model protection.
As depicted in figs. 1 and 2, the utility model provides a kind of virtual reality goggles, the incidence surface of virtual reality goggles
For Fresnel Lenses face 1, the exiting surface of virtual reality goggles is aspherical 2, and the effective light transmission bore of virtual reality goggles is with entering
Interpupillary distance from ratio be more than 4, wherein entrance pupil distance is the human eye of user and the distance of aspherical central point.
Virtual reality goggles provided by the utility model, by using Fresnel Lenses face 1 and aspherical 2 skills being combined
Art means, and the ratio of the effective light transmission bore of virtual reality goggles and entrance pupil distance is set greater than 4, eyepiece can be improved
The angle of visual field so that human eye can observe the object of 110 degree of visual field scopes, strengthen the feeling of immersion of user.
Effective aperture is also called " bore ", " maximum caliber ".Refer to the diameter of the largest beam by virtual reality goggles.
In order to further improve the angle of visual field of eyepiece, aspherical rise h is less than or equal to 5.5 millimeters.Rise is arch bridge master
The discrepancy in elevation of the arch ring from vault to arch springing.
As depicted in figs. 1 and 2, above-mentioned Fresnel Lenses face includes：Central area and fringe region, central area are to remote
From aspherical raised convex lens 12, fringe region is tooth type structures 11.
The formation basic theory of Fresnel Lenses：Assuming that the refractive power of a lens occurs only at optical surface (such as lens
Surface), remove optical material as much as possible, and the flexibility of retention surface.Another understanding is exactly lens continuous surface
Partly " collapse " onto a plane.As shown in figure 1, its surface is made up of a series of sawtooth pattern grooves, core is oval
Type camber line.Each angle is different between groove part and adjacent grooves, but all concentrates light at one, forms gonglion, also
It is the focus of lens.Each groove can be seen as an independent lenslet, and light is adjusted to directional light or optically focused.It is this
Lens can also eliminate part spherical aberration.
Optionally, each tooth-shape structure includes multiple teeth, and the tooth depth of multiple teeth is identical, and the tooth depth of each tooth is 0.1 milli
Rice~0.2 millimeter.Such design can reduce veiling glare, improve image contrast.
In a kind of optional embodiment, the spacing of two teeth of arbitrary neighborhood is more than 0.17 millimeter.Can from Fig. 1 and Fig. 2
To find out the comparatively dense of the tooth at edge distribution, for the ease of processing, the spacing of two neighboring tooth is set greater than 0.17 millimeter,
The spacing of wherein two neighboring tooth is the distance between crown of two adjacent teeths.
Thickness a1 at the center of above-mentioned virtual reality goggles is less than 7 millimeters, and/or,
The edge thickness a2 of above-mentioned virtual reality goggles is more than 2.4 millimeters.Preferable translucent effect can so be ensured
Virtual reality goggles will not be done again larger.
In order to improve the multiplication factor of virtual reality goggles, the focal length of virtual reality goggles is 30~40 millimeters.The structure
Virtual reality goggles enlargement ratio be 6 times~8 times between.
Optionally, the entrance pupil distance of above-mentioned virtual reality goggles is more than or equal to 13 millimeters and less than or equal to 30 millimeters.Can be with
The practicality of virtual reality goggles is improved, had both gone for the user of non-wearing spectacles, and had gone for wearing spectacles again
User.
Accordingly, further to improve user's ease of use, the external diameter R of above-mentioned virtual reality goggles is more than or equal to 61
Millimeter and less than or equal to 68 millimeters.The crowd that interpupillary distance is 55 millimeters~75 millimeters can be caused to use above-mentioned virtual reality goggles
When need not adjust interpupillary distance and just can see more visible picture.
In a kind of optional embodiment, aspherical vertex curvature radius is 78.94148069 millimeters, aspherical circle
It is -30.70083790 to bore coefficient；And/or the vertex curvature radius in Fresnel Lenses face is -23.82862569, Fresnel is saturating
The circular cone coefficient of minute surface is -0.49864480.The virtual reality goggles being prepared using above-mentioned parameter, there is wider visual field
Angle.
When virtual reality goggles provided by the utility model are applied in eyepiece system, using reverse trace, make eyepiece system
The image planes of system are display screen, and object plane is the virtual image caused by eyepiece system, and human eye pupil is located at light path diaphragm, and lens are located at light path
Among diaphragm and display screen.
Planar Fresnel lens can be used for the Fresnel Lenses face of virtual reality goggles provided by the utility model
Face, i.e., the line of the crown of each tooth is a straight line, and the aspherical and plane Fresnel Lenses face coefficient of virtual reality goggles is expired
Foot states formula：
Wherein Z aspherical (Fresnel Lenses face) rise, c=1/R, R are aspherical (Fresnel Lenses face) apex
Radius of curvature, k is the circular cone coefficient in aspherical (Fresnel Lenses face), and aspherical (Fresnel Lenses face) rise is polynomial
Each term coefficient, r are the radial coordinate of virtual reality goggles long measure.
Aspherical each term coefficient is as follows：
R=78.94148069
K=-30.70083790
a1=0.00
a2=3.48877581e-6
a3=2.01039781e-8
a4=-5.10038172e-12
a5=-6.86405315e-13
a6=3.34729801e-15
a7=-7.56466685e-18
a8=9.30967295e-21
a9=-6.03699613e-24
a10=1.61851680e-27
a11=0.00
Each term coefficient in flat board Fresnel Lenses face is as follows：
R=-23.82862569
K=-0.49864480
a1=-8.36558452e-5
a2=-8.95387894e-7
a3=2.97614189e-8
a4=-4.81297414e-11
a5=8.90217531e-15
a6=5.76969420e-17
a7=-5.10974945e-20
a8=5.96001533e-23
a9=-9.12844488e-26
a10=4.59542326e-29
a11=1.73072353e-33
Positive and negative in above-mentioned numerical value represents different directions.
To sum up numerical value, virtual reality goggles provided by the utility model are applied to the condition met in virtual reality system
Such as table 1：
Table 1
The distance between human eye and object plane in above table are not limited to cited on table -250 millimeters, can be -250
Millimeter~-1000 millimeters between any number, as shown in Fig. 2 between the crown and display surface in above-mentioned Fresnel Lenses face away from
Can be 34.6 millimeters~36 millimeters from be not limited to enumerate in table with a distance from L 34.6 millimeters, above-mentioned refractive index and abbe number
Relation be：Refractive index increases, and abbe number reduces.
Based on the parameter in table 1, the tune formed when entrance pupil distance is 15 millimeters, 19 millimeters, 22 millimeters and 30 millimeters
Modulation trnasfer function value figure is respectively as shown in Fig. 3 a, Fig. 3 b, Fig. 3 c, Fig. 3 d, in wherein Fig. 3 a：Curve b1 and curve b2 are represented respectively
Meridian modulation transfer function and sagitta of arc modulation transfer function under 55 degree of angles of visual field, curve b3 and curve b4 represent 42 degree and regarded respectively
Meridian modulation transfer function and sagitta of arc modulation transfer function under rink corner, curve b5 and curve b6 are represented under 30 degree of angles of visual field respectively
Meridian modulation transfer function and sagitta of arc modulation transfer function, curve b7 and curve b8 represent the meridian under 20 degree of angles of visual field respectively
Modulation transfer function and sagitta of arc modulation transfer function, curve b9 and curve b10 represent diffraction limit and field of view center modulation respectively
Transmission function, in Fig. 3 b：Curve c1 and curve c2 represents meridian modulation transfer function and the sagitta of arc under 47.5 degree of angles of visual field respectively
Modulation transfer function, curve c3 and curve c4 represent meridian modulation transfer function and sagitta of arc modulation biography under 40 degree of angles of visual field respectively
Delivery function, curve c5 and curve c6 represent meridian modulation transfer function and sagitta of arc modulation transmission letter under 30 degree of angles of visual field respectively
Number, curve c7 and curve c8 represent meridian modulation transfer function and sagitta of arc modulation transfer function under 15 degree of angles of visual field respectively, bent
Line c9 and curve c10 represent diffraction limit and field of view center modulation transfer function respectively.In Fig. 3 c：Curve d1 and curve d2 difference
The meridian modulation transfer function and sagitta of arc modulation transfer function under 43.5 degree of angles of visual field are represented, curve d3 and curve d4 are represented respectively
Meridian modulation transfer function and sagitta of arc modulation transfer function under 40 degree of angles of visual field, curve d5 and curve d6 represent 30 degree and regarded respectively
Meridian modulation transfer function and sagitta of arc modulation transfer function under rink corner, curve d7 and curve d8 are represented under 15 degree of angles of visual field respectively
Meridian modulation transfer function and sagitta of arc modulation transfer function, curve d9 and curve d10 are represented in diffraction limit and visual field respectively
Heart modulation transfer function.In Fig. 3 d：Curve e1 and curve e2 represent respectively meridian modulation transfer function under 36 degree of angles of visual field and
Sagitta of arc modulation transfer function, curve e3 and curve e4 represent meridian modulation transfer function and sagitta of arc tune under 30 degree of angles of visual field respectively
Modulation trnasfer function, curve e5 and curve e6 represent meridian modulation transfer function and sagitta of arc modulation transmission under 25 degree of angles of visual field respectively
Function, curve e7 and curve e8 represent meridian modulation transfer function and sagitta of arc modulation transfer function under 15 degree of angles of visual field respectively,
Curve e9 and curve e10 represent diffraction limit and field of view center modulation transfer function respectively.
Modulation transfer function illustrates that the performance of optical system is more excellent, that is, divides example to get over closer to 1 in the art
Height, spatial frequency i.e. so that more fewer striplines can be showed to measure in the range of 1 millimeter, its unit with l lines it is right/millimeter represents；
This curve is higher, and optical system resolution ratio is higher,
The material of above-mentioned virtual reality goggles can be polymethyl methacrylate, or other optical plastics, example
Such as EP5000, PC.
The utility model additionally provides one kind and wears display device, including two virtual realities described in any one as described above
Eyepiece.
Above-mentioned display device of wearing can be glasses, helmet etc..
Preferably, the centre-to-centre spacing of two virtual reality goggles is more than or equal to 61 millimeters and less than or equal to 69 millimeter.
The shape of virtual reality goggles can be changed by placing nose for the ease of wearer, and shape can use such as
Shape shown in Fig. 4, above-mentioned virtual reality goggles can be formed using Shooting Technique.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if these modifications and variations of the present utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
Claims (12)
1. a kind of virtual reality goggles, it is characterised in that the incidence surface of the virtual reality goggles is Fresnel Lenses face, described
The exiting surface of virtual reality goggles is aspherical, and the effective light transmission bore and the ratio of entrance pupil distance of the virtual reality goggles are big
In 4, wherein entrance pupil distance is the human eye of user and the distance of the aspherical central point.
2. virtual reality goggles as claimed in claim 1, it is characterised in that the aspherical rise is less than or equal to 5.5 millis
Rice.
3. virtual reality goggles as claimed in claim 1, it is characterised in that the Fresnel Lenses face includes：Central area
And fringe region, the central area are that the fringe region is tooth type structures to away from the aspherical raised convex lens.
4. virtual reality goggles as claimed in claim 3, it is characterised in that each tooth-shape structure includes multiple teeth, described more
The tooth depth of individual tooth is identical, and the tooth depth of each tooth is 0.1 millimeter~0.2 millimeter.
5. virtual reality goggles as claimed in claim 3, it is characterised in that the spacing of two teeth of arbitrary neighborhood is more than 0.17 milli
Rice.
6. virtual reality goggles as claimed in claim 1, it is characterised in that the thickness at the center of the virtual reality goggles
Less than 7 millimeters, and/or,
The edge thickness of the virtual reality goggles is more than 2.4 millimeters.
7. virtual reality goggles as claimed in claim 1, it is characterised in that the focal length of the virtual reality goggles is 30~40
Millimeter.
8. virtual reality goggles as claimed in claim 1, it is characterised in that the entrance pupil distance of the virtual reality goggles is more than
Equal to 13 millimeters and less than or equal to 30 millimeters.
9. virtual reality goggles as claimed in claim 1, it is characterised in that the external diameter of the virtual reality goggles is more than or equal to
61 millimeters and less than or equal to 68 millimeters.
10. the virtual reality goggles as described in any one of claim 1~9, it is characterised in that the aspherical vertex curvature
Radius is 78.94148069 millimeters, and the aspherical circular cone coefficient is -30.70083790；And/or the Fresnel Lenses
The vertex curvature radius in face is -23.82862569, and the circular cone coefficient in the Fresnel Lenses face is -0.49864480.
11. one kind wears display device, it is characterised in that virtual existing as described in any one of claim 1~10 including two
Real eyepiece.
12. wear display device as claimed in claim 11, it is characterised in that the centre-to-centre spacing of two virtual reality goggles
More than or equal to 61 millimeters and less than or equal to 69 millimeters.
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| CN201720986924.2U CN207114878U (en) | 2017-08-08 | 2017-08-08 | A kind of virtual reality goggles and wear display device |
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| CN201720986924.2U CN207114878U (en) | 2017-08-08 | 2017-08-08 | A kind of virtual reality goggles and wear display device |
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| CN207114878U true CN207114878U (en) | 2018-03-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407301A (en) * | 2018-11-30 | 2019-03-01 | 重庆爱奇艺智能科技有限公司 | A kind of eyepiece and headset equipment |
| WO2024077786A1 (en) * | 2022-10-14 | 2024-04-18 | 北京凌宇智控科技有限公司 | Optical system, wearable interaction device and interaction system |
-
2017
- 2017-08-08 CN CN201720986924.2U patent/CN207114878U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407301A (en) * | 2018-11-30 | 2019-03-01 | 重庆爱奇艺智能科技有限公司 | A kind of eyepiece and headset equipment |
| CN109407301B (en) * | 2018-11-30 | 2021-06-15 | 重庆爱奇艺智能科技有限公司 | Eyepiece and head-mounted equipment |
| WO2024077786A1 (en) * | 2022-10-14 | 2024-04-18 | 北京凌宇智控科技有限公司 | Optical system, wearable interaction device and interaction system |
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