CN106125168A - A kind of Fresnel Lenses and virtual reality device - Google Patents
A kind of Fresnel Lenses and virtual reality device Download PDFInfo
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- CN106125168A CN106125168A CN201610770556.8A CN201610770556A CN106125168A CN 106125168 A CN106125168 A CN 106125168A CN 201610770556 A CN201610770556 A CN 201610770556A CN 106125168 A CN106125168 A CN 106125168A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
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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
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
Embodiments providing a kind of Fresnel Lenses and a kind of virtual reality device, relate to optical technical field, this Fresnel Lenses comprises the first outer surface and the second outer surface.Described first outer surface is shiny surface；Being carved with multiple concentric circular on described second outer surface, the plurality of concentric circular forms multi-turn groove on described second outer surface；Wherein, the groove spacing between described multi-turn groove is non-equidistance, to reduce the veiling glare that described Fresnel Lenses introduces in described virtual reality device.Owing to the groove spacing between described multi-turn groove is the most identical, the veiling glare produced on invalid of certain groove can be cancelled out each other in Fresnel Lenses, without entering human eye, thus eliminate smear or ghost, improve the visual effect of virtual reality device.
Description
Technical field
The present embodiments relate to optical technical field, particularly relate to a kind of Fresnel Lenses for virtual reality device
And virtual reality device.
Background technology
The technology such as virtual reality is processed by a little one-tenth electronic 3-D models, three-dimensional reality, man-machine interaction, it is provided that real
Virtual simulation environment, allows users to immerse wherein, carries out natural interaction with dummy object and scene, it is possible to eliminate people with virtual
The barrier film of environment part, and excite initiative and the imaginative power of user, bring immersion true to nature, that effect is novel to experience to user.
According to the different demands of application, create the different virtual reality products such as the helmet, wearable device, semi-immersion, immersion
And system.Virtual reality head-mounted display equipment, the abbreviation VR helmet, VR head show or VR glasses, are to utilize emulation technology and meter
The product of the multiple technologies set such as calculation machine graphics, human-machine interface technology, sensing technology and network technology, it is possible to realize axonometric chart
The display of picture.The VR helmet generally comprises screen, lens and the equipment supporter being made up of plastic or other material, and wherein lens can be revised
The angle of lenticular light source, is read by human eye again so that people can see the things that distance eyes are close clearly.
In order to make the lens in the VR helmet can be the thinnest lighter, in the most VR helmet, lens use Fresnel Lenses
(Fresnel Lens), has another name called Fresnel lens, as shown in Fig. 1 (a) and Fig. 1 (b).Fresnel Lenses lens and the song of ordinary lens
Rate is consistent, but its surface one side is bright finish, and the ascending concentric circular of another side imprinting, its texture is according to interference of light
And disturb and penetrate and relative sensitivity and receiving angle requirement design, characteristic is that area is big, thickness is thin and detecting distance is remote.Luxuriant and rich with fragrance
Nie Er lens appear as a piece of glass having countless multiple concentric circular lines (i.e. Fresnel-zone), as shown in Fig. 1 (b), but can
Reach the effect of convex lens.
But, during realizing the present invention, inventor finds existing luxuriant and rich with fragrance Neil lens, inevitably in void
Intend real world devices introduces a lot of veiling glares so that when user uses virtual reality device, it is seen that vision void scape image
Edge is that fuzzy even appearance forms smear or ghost, the serious visual effect reducing virtual reality device, have impact on
Consumer's Experience.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of Fresnel Lenses for virtual reality device and virtual reality
Equipment, it is possible to reduce the veiling glare that Fresnel Lenses introduces in virtual reality device, improves the visual effect of virtual reality device,
Thus improve Consumer's Experience.
The technical scheme that the embodiment of the present invention uses is as follows:
The embodiment of the present invention provides a kind of Fresnel Lenses for virtual reality device, and this Fresnel Lenses comprises first
Outer surface and the second outer surface；Described first outer surface is shiny surface；Multiple concentric circular it is carved with on described second outer surface, described
Multiple concentric circulars form multi-turn groove on described second outer surface；Wherein, the groove spacing between described multi-turn groove is non-
Equidistantly, to reduce the veiling glare that described Fresnel Lenses introduces in described virtual reality device.
Alternatively, in described multi-turn groove, groove spacing between three circle grooves of arbitrary neighborhood is different.
Alternatively, in the groove spacing near described Fresnel Lenses center more than near described Fresnel Lenses edge
The groove spacing at place, to reduce the veiling glare that described Fresnel Lenses introduces in described virtual reality device.
Alternatively, the groove spacing between described multi-turn groove is true by the angle of inclination of the significant surface of described second outer surface
Fixed.
Alternatively, the angle of inclination often enclosing invalid corresponding to groove on described second outer surface is not more than 5 degree, and
Often enclosing between the angle of inclination of invalid corresponding to groove on described second outer surface is unordered, to reduce described luxuriant and rich with fragrance alunite
The veiling glare that your lens introduce in described virtual reality device.
The embodiment of the present invention additionally provides a kind of virtual reality device, and this virtual reality device includes device housings and Fei Nie
That lens；Described Fresnel Lenses is fixed by described device housings；
Described Fresnel Lenses comprises the first outer surface and the second outer surface；Described first outer surface is shiny surface, described
Being carved with multiple concentric circular on second outer surface, the plurality of concentric circular forms multi-turn groove on described second outer surface；Wherein,
Groove spacing between described multi-turn groove is non-equidistance, to reduce described Fresnel Lenses in described virtual reality device
The veiling glare introduced.
Alternatively, in the groove spacing near described Fresnel Lenses center more than near described Fresnel Lenses edge
The groove spacing at place, to reduce the veiling glare that described Fresnel Lenses introduces in described virtual reality device.
Alternatively, in described multi-turn groove, groove spacing between three circle grooves of arbitrary neighborhood is different.
Alternatively, the groove spacing between described multi-turn groove is true by the angle of inclination of the significant surface of described second outer surface
Fixed.
Alternatively, the angle of inclination often enclosing invalid corresponding to groove on described second outer surface is not more than 5 degree, and
Often enclosing between the angle of inclination of invalid corresponding to groove on described second outer surface is unordered, to reduce described luxuriant and rich with fragrance alunite
The veiling glare that your lens introduce in described virtual reality device.
The technical scheme of the embodiment of the present invention has the advantage that the second appearance of the Fresnel Lenses of the embodiment of the present invention
Being no longer equally spaced between the multiple concentric circulars carved on face, the groove spacing between multi-turn groove described in the i.e. second outer surface is not
The most identical, change refraction or the reflection of light, thus during light incidence, light transmits between each groove of Fei Nier lens will
No longer there is specific rule, thus the veiling glare produced on invalid of certain groove can in Fresnel Lenses mutually
Offset, without entering human eye, thus eliminate smear or ghost, improve the visual effect of virtual reality device.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is this
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to root
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 (a) is the structure composition schematic diagram of a kind of Fresnel Lenses and ordinary lens；
Fig. 1 (b) is a kind of Fresnel Lenses schematic diagram；
Fig. 2 is the structure composition schematic diagram of a kind of Fresnel Lenses；
The schematic diagram of a kind of Fresnel Lenses that Fig. 3 provides for the embodiment of the present invention；
The structure composition schematic diagram of a kind of virtual reality device that Fig. 4 provides for the embodiment of the present invention；
The structure composition schematic diagram of another virtual reality device that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In order to be better understood from the embodiment of the present invention, before describing the embodiment of the present invention, related notion is carried out accordingly
Introduce.
The operation principle of Fresnel Lenses: as shown in Fig. 1 (a), generally uses common convex lens, it may appear that corner becomes
Secretly, fuzzy phenomenon, this is because the refraction of light only occurs in the interface of medium, convex lens sheet is thicker, and light is the most straight
The part that line is propagated can make light attenuation.If the part of straightline propagation can be removed, only retain the curved surface that refraction occurs, just
Can save the spotlight effect that lot of materials reaches identical simultaneously, Fresnel Lenses uses this principle exactly.
About significant surface and invalid: as Fig. 1 (a) or as shown in Figure 2 Fresnel Lenses the most all comprise the first appearance
Face and the second outer surface, wherein, the first outer surface is shiny surface, and the second outer surface is carved with multiple concentric circular, thus second
Define multi-turn groove on outer surface, often enclose the surface of groove and all include invalid and significant surface (on the i.e. second outer surface
Often circle groove all correspondences have invalid and significant surface), it is generally the case that the light that the display screen of virtual reality device sends is by being
Carry out reflecting form vision void scape image on human eye by significant surface.
And veiling glare, i.e. non-sequence light, refer to reflect by invalid (as shown in Figure 2) or reflect in Fresnel Lenses
The light entering human eye formed, it is by display effect final for impact, even forms smear or ghost, reduces imaging
Quality.
In embodiments of the present invention, the angle of inclination of invalid refers to the angle of inclination of invalid relatively horizontal orientation；When
The design of invalid is not plane, but during cambered surface, the angle of inclination of invalid refers to and this invalid tangent plane and water
Square to the angle formed.In like manner, the angle of inclination of significant surface refers to, the angle of inclination of significant surface relatively horizontal orientation；When
The design of significant surface is not plane, but during cambered surface, the angle of inclination of significant surface refers to the plane tangent with this significant surface and water
Square to the angle formed.
Find through inventor's research and analysis, in the prior art, the Fresnel Lenses that virtual reality device uses, surface
All use concentric circular as in figure 2 it is shown, be i.e. all equally spaced (such as the spacing between Fig. 2 groove between the groove on surface
It is all d).After light incides Fresnel Lenses, the veiling glare produced on invalid of certain groove may passback be passed to another
On the surface of an outer groove, it is all equally spaced due to groove, then light transmits between each groove of Fei Nier lens
To have certain rule, veiling glare cannot eliminate and may finally enter human eye, causes smear or ghost, reduces the matter of imaging
Amount.
Embodiments provide a kind of Fresnel Lenses for virtual reality device, as it is shown on figure 3, described luxuriant and rich with fragrance alunite
You comprise the first outer surface 31 and the second outer surface 32 by lens；Described first outer surface 31 is shiny surface；Described second outer surface
Being carved with multiple concentric circular on 32, the plurality of concentric circular forms multi-turn groove on described second outer surface；Wherein, described multi-turn
Groove spacing between groove is non-equidistance, miscellaneous with reduce that described Fresnel Lenses introduces in described virtual reality device
Astigmatism.
In embodiments of the present invention, between multiple concentric circulars that the second outer surface 32 of Fresnel Lenses is carved, it is no longer
Equally spaced, the groove spacing between the described multi-turn groove of the i.e. second outer surface 32 is the most identical, changes the refraction of light
Or reflection, thus during light incidence, light transmits between each groove of Fei Nier lens and will no longer have that specific rule, thus
The veiling glare produced on invalid of certain groove can be cancelled out each other in Fresnel Lenses, without entering human eye, from
And eliminate smear or ghost, improve the visual effect of virtual reality device.
Further, by the incidence utilizing light, the principle that reflects and reflect, inventor repeatedly analyzes and tests and sends out
Existing, when the groove spacing between described multi-turn groove is carried out non-equidistance design, if it is possible to meet three adjacent circle grooves
Between groove spacing variant, then preferably veiling glare eradicating efficacy can be obtained.Therefore, in the embodiment of the present invention
In, in described multi-turn groove, the groove spacing between three circle grooves of arbitrary neighborhood can be different.
Alternatively, the groove spacing between described multi-turn groove is carried out non-equidistance design time, described multi-turn groove it
Between groove spacing this how to determine, in embodiments of the present invention, the groove spacing between described multi-turn groove can be by described
The angle of inclination of the significant surface of the second outer surface determines.Because when the angle of inclination of the significant surface of described second outer surface is different
Time, the incident light of equal angular in the angle of the reflection of described Fresnel Lenses kind and refraction also by difference because miscellaneous in order to eliminate
Astigmatism, the design of the groove spacing between described multi-turn groove is necessarily required to variant.
Alternatively, inventor passes through calculating repeatedly, emulates and test discovery, the described multi-turn tooth of described second outer surface
In stricture of vagina, if making in the groove spacing at described Fei Nier lens centre relatively big, i.e. groove is the most sparse, near institute
State the groove spacing at Fei Nier rims of the lens less, i.e. groove is the closeest, can reduce veiling glare further.I.e. close
The groove spacing of described Fresnel Lenses center, more than the groove spacing near described Fresnel Lenses edge, can enter one
Step reduces the veiling glare that described Fresnel Lenses introduces in described virtual reality device.
Alternatively, when in described multi-turn groove arbitrary neighborhood three circle grooves between groove spacing difference time, its spacing
Determination, can determine according to the angle of inclination of the significant surface of described second outer surface.Can count according to angle of reflection, refraction angle etc.
Obtain.
Alternatively, except being non-equidistance by the groove line space design between described multi-turn groove, thus reduce described phenanthrene
Outside the veiling glare that Nie Er lens introduce in described virtual reality device, it is also possible to the often circle tooth on described second outer surface
The angle of inclination of invalid corresponding to stricture of vagina is designed so that it is meets the angular range preset, thus reduces described further
The veiling glare that Fresnel Lenses introduces in described virtual reality device.Specifically, the often circle groove on described second outer surface
The angle of inclination of corresponding invalid can be not more than 5 degree, and the often circle nothing corresponding to groove on described second outer surface
Unordered between the angle of inclination in effect face, make veiling glare reflection, refraction direction variation rather than facing one direction,
To reduce the veiling glare that described Fresnel Lenses introduces in described virtual reality device.In embodiments of the present invention, described
Often enclosing between the angle of inclination of invalid corresponding to groove on two outer surfaces is unordered referring to, on described second outer surface
The angle of inclination of often circle corresponding to groove invalid be not the most identical, the most adjacent first lap groove, the second circle groove
1 ° can be respectively with the angle of inclination of the 3rd circle invalid of groove, 2 ° and 3 °, thus reach to make veiling glare reflection, reflect
The diversified effect in direction.
Alternatively, described Fresnel Lenses can be circular, it is also possible to is other shapes.Such as, should when Fresnel Lenses
When virtual reality device, except being circle, it is also possible in the bridge of the nose holding unit near described virtual reality device
Part side is trimmed, then become other shapes described in after being trimmed.
Embodiments providing a kind of virtual reality device, described virtual reality device includes device housings and Fei Nie
That lens；Described Fresnel Lenses is fixed by described device housings；Described Fresnel Lenses is the Fresnel described in Fig. 3 embodiment
Lens.
Specifically, described Fresnel Lenses can comprise the first outer surface and the second outer surface；Described first outer surface is
Shiny surface, described second outer surface is carved with multiple concentric circular, and the plurality of concentric circular is formed many on described second outer surface
Circle groove；Wherein, the groove spacing between described multi-turn groove is non-equidistance, to reduce described Fresnel Lenses in described void
Intend the veiling glare introduced in real world devices.
In embodiments of the present invention, owing to carving on the second outer surface 32 of the Fresnel Lenses used in virtual reality device
Multiple concentric circulars between, be no longer equally spaced, the groove spacing between the described multi-turn groove of the i.e. second outer surface 32 is not
The most identical, change refraction or the reflection of light, thus during light incidence, light transmits between each groove of Fei Nier lens will
No longer having specific rule, the veiling glare produced on invalid of certain groove mutually can support in Fresnel Lenses
Disappear, without entering human eye, thus eliminate smear or ghost, improve the visual effect of virtual reality device.
Alternatively, by the incidence utilizing light, the principle that reflects and reflect, inventor repeatedly analyzes and tests discovery,
When groove spacing between described multi-turn groove is carried out non-equidistance design, if it is possible to meet between three adjacent circle grooves
Groove spacing variant, then preferably veiling glare eradicating efficacy can be obtained.Therefore, in embodiments of the present invention, institute
Stating the groove spacing between three circle grooves of arbitrary neighborhood in multi-turn groove can be different.
Alternatively, the groove spacing between described multi-turn groove can be by the inclination angle of the significant surface of described second outer surface
Degree determines.Because when the angle of inclination difference of the significant surface of described second outer surface, the light of equal angular incidence is at described phenanthrene
The angle of the reflection of Nie Er lens kind and refraction is also by difference, because the groove in order to eliminate veiling glare, between described multi-turn groove
The design of spacing is necessarily required to variant.
Alternatively, inventor passes through calculating repeatedly, emulates and test discovery, the described multi-turn tooth of described second outer surface
In stricture of vagina, if making in the groove spacing at described Fei Nier lens centre relatively big, i.e. groove is the most sparse, near institute
State the groove spacing at Fei Nier rims of the lens less, i.e. groove is the closeest, can reduce veiling glare further.I.e. close
The groove spacing of described Fresnel Lenses center, more than the groove spacing near described Fresnel Lenses edge, can enter one
Step reduces the veiling glare that described Fresnel Lenses introduces in described virtual reality device.
Alternatively, when in described multi-turn groove arbitrary neighborhood three circle grooves between groove spacing difference time, its spacing
Determination, can determine according to the angle of inclination of the significant surface of described second outer surface.Can count according to angle of reflection, refraction angle etc.
Obtain.
Alternatively, except being non-equidistance by the groove line space design between described multi-turn groove, thus reduce described phenanthrene
Outside the veiling glare that Nie Er lens introduce in described virtual reality device, it is also possible to the often circle tooth on described second outer surface
The angle of inclination of invalid corresponding to stricture of vagina is designed so that it is meets the angular range preset, thus reduces described further
The veiling glare that Fresnel Lenses introduces in described virtual reality device.Specifically, the often circle groove on described second outer surface
The angle of inclination of corresponding invalid can be not more than 5 degree, and the often circle nothing corresponding to groove on described second outer surface
Unordered between the angle of inclination in effect face, make veiling glare reflection, refraction direction variation rather than facing one direction,
To reduce the veiling glare that described Fresnel Lenses introduces in described virtual reality device.
Alternatively, the sight line of described wear-type virtual reality device can also include that display screen, described display screen can be
Independent display screen, it is also possible to be the mobile terminals such as mobile phone, described display screen is used for showing vision void scape image.
Alternatively, in embodiments of the present invention, the composition structural representation of described virtual reality device can be such as Fig. 5 institute
Show, including device housings 51 and a pair Fresnel Lenses 52.Fresnel Lenses 52 can be fixed by described device housings 51
And protection, described device housings can also fit tightly in face, it is to avoid when wearing, ambient enters, and also improves simultaneously
Wearing comfort.
Alternatively, described device housings 51 can be made up of multiple parts, and described device housings can be one-body molded, also
Can be respectively manufacture after link together.Alternatively, described device housings 51 can also comprise the bridge of the nose and hold up parts, then described
Fresnel Lenses 52 can be arranged at the described bridge of the nose and hold up the both sides of parts, and is connected with described device housings 51, thus logical
Crossing described device housings 51 and the described bridge of the nose holds up parts, described wear-type virtual reality device can fit tightly with face,
And be the bridge of the nose slot milling of people, after wearing, described Fresnel Lenses 52 is positioned at the front of wearer's eyes.
Described device housings can be other shape and structure, and it can also be other shape and structure that the described bridge of the nose holds up parts
Make the embodiment of the present invention in this no limit.Described wear-type virtual reality device can also include display screen, other control electricity
The parts such as road, interface and power supply, the most not shown in Fig. 5.
Device embodiment described above is only schematically, and the wherein said unit illustrated as separating component can
To be or to may not be physically separate, the parts shown as unit can be or may not be physics list
Unit, i.e. may be located at a place, or can also be distributed on multiple NE.Can be selected it according to the actual needs
In some or all of module realize the purpose of the present embodiment scheme.Those of ordinary skill in the art are not paying creativeness
Work in the case of, be i.e. appreciated that and implement.
Through the above description of the embodiments, those skilled in the art it can be understood that to each embodiment can
The mode adding required general hardware platform by software realizes, naturally it is also possible to pass through hardware.Based on such understanding, on
State the part that prior art contributes by technical scheme the most in other words to embody with the form of software product, should
Computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD etc., including some fingers
Make with so that a computer equipment (can be personal computer, server, or the network equipment etc.) performs each and implements
The method described in some part of example or embodiment.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although
With reference to previous embodiment, the present invention is described in detail, it will be understood by those within the art that: it still may be used
So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent；
And these amendment or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
1. a Fresnel Lenses, it is characterised in that described Fresnel Lenses comprises the first outer surface and the second outer surface；Described
First outer surface is shiny surface；
Being carved with multiple concentric circular on described second outer surface, the plurality of concentric circular forms multi-turn tooth on described second outer surface
Stricture of vagina；Wherein, the groove spacing between described multi-turn groove is non-equidistance.
Fresnel Lenses the most according to claim 1, it is characterised in that three circle teeth of arbitrary neighborhood in described multi-turn groove
Groove spacing between stricture of vagina is different.
Fresnel Lenses the most according to claim 1 and 2, it is characterised in that near described Fresnel Lenses center
Groove spacing more than near the groove spacing of described Fresnel Lenses edge.
Fresnel Lenses the most according to claim 1 and 2, it is characterised in that the often circle groove on described second outer surface
The angle of inclination of corresponding invalid is not more than 5 degree, and corresponding to groove invalid of the often circle on described second outer surface
Angle of inclination between be unordered.
Fresnel Lenses the most according to claim 1 and 2, it is characterised in that the groove spacing between described multi-turn groove
Determined by the angle of inclination of the significant surface of described second outer surface.
6. a virtual reality device, it is characterised in that include Fresnel Lenses；
Described Fresnel Lenses comprises the first outer surface and the second outer surface；Described first outer surface is shiny surface, described second
Being carved with multiple concentric circular on outer surface, the plurality of concentric circular forms multi-turn groove on described second outer surface；Wherein, described
Groove spacing between multi-turn groove is non-equidistance, introduces reducing described Fresnel Lenses in described virtual reality device
Veiling glare.
Virtual reality device the most according to claim 6, it is characterised in that appoint in the multi-turn groove of described Fresnel Lenses
The groove spacing between three adjacent circle grooves of anticipating is different.
8. according to the virtual reality device described in claim 6 or 7, it is characterised in that near described Fresnel Lenses center
The groove spacing at place is more than the groove spacing near described Fresnel Lenses edge, to reduce described Fresnel Lenses described
The veiling glare introduced in virtual reality device.
9. according to the virtual reality device described in claim 6 or 7, it is characterised in that the second appearance of described Fresnel Lenses
The angle of inclination often enclosing invalid corresponding to groove on face is not more than 5 degree, and the often circle groove on described second outer surface
It is unordered between the angle of inclination of corresponding invalid, to reduce described Fresnel Lenses in described virtual reality device
The veiling glare introduced.
10. according to the virtual reality device described in claim 6 or 7, it is characterised in that the multi-turn groove of described Fresnel Lenses
Between groove spacing determined by the angle of inclination of the significant surface of described second outer surface.
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| CN201610770556.8A CN106125168A (en) | 2016-08-30 | 2016-08-30 | A kind of Fresnel Lenses and virtual reality device |
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| CN106646890A (en) * | 2017-03-10 | 2017-05-10 | 京东方科技集团股份有限公司 | Virtual reality display device and manufacturing method thereof |
| CN106772717A (en) * | 2016-12-22 | 2017-05-31 | 深圳超多维科技有限公司 | A kind of Fresnel Lenses and virtual reality device |
| WO2018130073A1 (en) * | 2017-01-16 | 2018-07-19 | 广州弥德科技有限公司 | Fresnel lens and display device with fresnel lens |
| TWI633337B (en) * | 2017-05-04 | 2018-08-21 | 宏碁股份有限公司 | Virtual reality display apparatus |
| CN109031661A (en) * | 2017-06-12 | 2018-12-18 | 宏碁股份有限公司 | Virtual reality display device |
| CN109471260A (en) * | 2017-09-08 | 2019-03-15 | 塔普翊海（上海）智能科技有限公司 | Eyepiece formula imaging optical device and wear-type image formation optical device and its manufacturing method and imaging method |
| CN109946839A (en) * | 2017-12-20 | 2019-06-28 | 精工爱普生株式会社 | Display device |
| US10429654B2 (en) | 2017-06-02 | 2019-10-01 | Acer Incorporated | Virtual reality display apparatus |
| CN111443479A (en) * | 2017-10-13 | 2020-07-24 | 玉晶光电(厦门)有限公司 | Eyepiece optical system |
| CN112424669A (en) * | 2018-07-24 | 2021-02-26 | 株式会社尼康 | Eyepiece optical system and head-mounted display |
| CN113759446A (en) * | 2021-09-09 | 2021-12-07 | 京东方科技集团股份有限公司 | Fresnel lens, Fresnel lens assembly and virtual reality display device |
| CN114859449A (en) * | 2022-05-09 | 2022-08-05 | 宁波舜宇奥来技术有限公司 | Fresnel lens |
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