CN207502825U - A kind of compact VR lens systems and VR show equipment - Google Patents
A kind of compact VR lens systems and VR show equipment Download PDFInfo
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- CN207502825U CN207502825U CN201721620071.7U CN201721620071U CN207502825U CN 207502825 U CN207502825 U CN 207502825U CN 201721620071 U CN201721620071 U CN 201721620071U CN 207502825 U CN207502825 U CN 207502825U
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- emergent pupil
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Abstract
The utility model system provides a kind of compact VR lens systems and VR shows equipment, and emergent pupil and screen including coaxial arrangement are equipped with exit lens, lens group and entrance lens successively between emergent pupil and screen, exit lens are located at close to the side of emergent pupil；Radius of curvature of the exit lens close to one side surface of emergent pupil is less than 0, and radius of curvature of the entrance lens close to one side surface of screen is more than 0；Lens system meets below equation：2ER*tan(FOV/2)>DoD, the field angle of lens system is FOV, distance of exit pupil ER, and the catercorner length of screen is DoD.The utility model sets compact lens arrangement, the volume that VR shows equipment entirety can effectively be reduced, it can be ensured that the value of ER and FOV are sufficiently large while screen size is reduced, feeling of immersion during so as to effectively ensure that the clarity of formed image and user use, the aberration of VR lens systems is small, makes the quality of image that user observes high.
Description
Technical field
The utility model is related to VR to show structure, specifically discloses a kind of compact VR lens systems and VR shows equipment.
Background technology
VR (Virtual Reality, virtual reality) is a kind of Computer Simulation that can be created with the experiencing virtual world
System, it generates a kind of simulated environment using computer, be a kind of multivariate information fusion, interactive Three-Dimensional Dynamic what comes into a driver's and
The system emulation of entity behavior makes user be immersed in the environment.
Existing VR shows that the opticator of equipment mainly simulates a virtual image using screen fit lens to user, allows use
Family is immersed in wherein, and VR shows in equipment that the eyeglass that uses is mostly monolithic non-spherical lens or Fresnel Lenses, single element lens by
In degree of freedom is few the problem of, the focal length of system can not be significantly reduced to obtain sufficiently large field angle, therefore be only suitable for big
The system of screen, such as 4~7 cun of big screens, and can not be applied on the small screen and high-resolution screen, such as less than 1 cun, divide
Resolution reaches the screen of more than FHD.
Mainstream VR shows the most DoD of screen (Diagonal of Display, the screen diagonal of equipment in the market
Length) all in more than 80mm.With the diversification of people's demand, the weight and occupied space of equipment, part are shown to reduce VR
VR shows that equipment is set as minimizing, but the ER (Eye Relief, emergent pupil away from) and FOV (Field while screen size is reduced
Angle) reduce, so as to reduce the clarity and feeling of immersion of image that VR displays equipment is brought to user.
Utility model content
Based on this, it is necessary to for prior art problem, a kind of compact VR lens systems are provided and VR shows equipment,
It can be ensured that the value of ER and FOV are sufficiently large while reducing screen size, so that it is guaranteed that the clarity of image is immersed with what is brought
Sense.
To solve prior art problem, the utility model discloses a kind of compact VR lens systems, including coaxial arrangement
Emergent pupil and screen, between emergent pupil and screen successively be equipped with exit lens, lens group and entrance lens, exit lens be located at close to go out
The side of pupil；
Radius of curvature of the exit lens close to one side surface of emergent pupil is less than 0, and entrance lens are close to the song of one side surface of screen
Rate radius is more than 0；
Lens system meets below equation：
2ER*tan(FOV/2)>DoD
The field angle of lens system is FOV, distance of exit pupil ER, and the catercorner length of screen is DoD.
Further, exit lens, lens group and entrance lens are coaxial arrangement.
Further, exit lens are coaxially disposed with emergent pupil.
Further, the diameter of exit lens, entrance lens and lens group, which is respectively less than, is equal to 45mm.
Further, exit lens and entrance lens are concavees lens.
Further, lens group includes at least one convex lens.
The utility model is also disclosed a kind of compact VR and shows equipment, a kind of compact VR described in including any of the above item
Lens system.
Further, the lens barrel of rectangle is arranged with outside exit lens, lens group and entrance lens.
The beneficial effects of the utility model are：The utility model discloses a kind of compact VR lens systems and VR shows and sets
It is standby, compact lens arrangement is set, the volume that VR shows equipment entirety can be effectively reduced, pass through multi-disc difference lens phase interworking
It closes, the degree of freedom of overall lens system can be increased, can be ensured that the value of ER and FOV are enough while screen size is reduced
Feeling of immersion when greatly, so as to effectively ensure that the clarity of formed image and user use, the aberration of VR lens systems is small, uses
The quality of image that family is observed is high, mainly reduces the volume and weight that VR shows equipment by reducing the size of screen.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the structure diagram of the utility model embodiment one.
Fig. 3 is the lateral chromatic aberration figure of the utility model embodiment one.
Fig. 4 is the structure diagram of the utility model embodiment two.
Fig. 5 is the lateral chromatic aberration figure of the utility model embodiment two.
Fig. 6 is the structure diagram of the utility model embodiment three.
Fig. 7 is the lateral chromatic aberration figure of the utility model embodiment three.
Fig. 8 is the structure diagram of the utility model embodiment four.
Fig. 9 is the lateral chromatic aberration figure of the utility model embodiment four.
Reference numeral is：Emergent pupil 11, screen 12, exit lens 21, lens group 30.
Specific embodiment
For that can further appreciate that the feature, technological means and the specific purposes reached, function of the utility model, below
The utility model is described in further detail with specific embodiment with reference to attached drawing.
Referring to figs. 1 to Fig. 9.
The utility model discloses a kind of compact VR lens systems, as shown in Figure 1, the emergent pupil 11 including coaxial arrangement and screen
Curtain 12 is equipped with exit lens 21, lens group 30 and entrance lens 22 successively between emergent pupil 11 and screen 12, it is preferable that outgoing is saturating
The refractive index of mirror 21 and entrance lens 22, Abbe number all same, exit lens 21 are located at close to the side of emergent pupil 11；Outgoing is saturating
Radius of curvature of the mirror 21 close to 11 1 side surface of emergent pupil is less than 0, can effectively reduce the distortion of lens system entirety, entrance lens
22 radius of curvature close to 12 1 side surface of screen is more than 0, and it is whole that entrance lens 22 coordinate exit lens 21 to adjust lens system
Spherical aberration, it is ensured that the image that lens system is formed is clear enough and fidelity is high；Lens system meets below equation：
2ER*tan(FOV/2)>DoD
Wherein, the field angle of lens system be FOV, distance of exit pupil ER, the catercorner length of screen 12 is DoD.
The utility model sets compact lens arrangement, the volume that VR shows equipment entirety can be effectively reduced, by more
Piece difference lens cooperate, and can increase the degree of freedom of overall lens system, can be ensured that while screen size is reduced
The value of ER and FOV is sufficiently large, so as to effectively ensure the feeling of immersion when clarity of formed image and user use, VR lens system
The aberration of system is small, makes the quality of image that user observes high, the body for mainly reducing VR by reducing the size of screen and showing equipment
Product and weight.
Preferably, exit lens 21, lens group 30 and entrance lens 22 are coaxial arrangement, and exit lens 21 are same with emergent pupil 11
Axis is set, i.e., emergent pupil 11, exit lens 21, lens group 30, entrance lens 22 and screen 12 are coaxially disposed, and can be further improved
The imaging effect of lens system entirety.
Preferably, the diameter of exit lens 21, entrance lens 22 and lens group 30, which is respectively less than, is equal to 45mm, i.e. lens system
In all lens maximum gauge be not more than 45mm, it can be ensured that the size of lens system will not be excessive.
Preferably, exit lens 21 and entrance lens 22 are concavees lens, and lens group 30 includes at least one convex lens, energy
The light path of enough effectively adjustment lens systems, it is ensured that the fidelity being ultimately imaged, while improve the clarity of image.
The utility model is also disclosed a kind of compact VR and shows equipment, a kind of compact VR described in including any of the above item
Lens system.
Preferably, the lens barrel of rectangle is arranged with outside exit lens 21, lens group 30 and entrance lens 22, lens barrel can be effective
Weaken the influence of black surround, improve the display effect that VR shows equipment entirety, strengthen the feeling of immersion of user.
Embodiment one, as shown in Fig. 2, including the emergent pupil 11, exit lens 21, lens group 30, incident coaxially set gradually
Lens 22, screen 12, lens group 30 include the first lens, the second lens, third lens and the to screen 12 successively from emergent pupil 11
Four lens, parameters are designed according to the following table 1.
Table 1, the design parameter of embodiment one
ER=20mm, FOV=60Deg, DoD=22mm can be obtained according to upper table 1, calculate and obtain 2ER*tan (FOV/2)=23
>22, meet 2ER*tan (FOV/2)>DoD, the present embodiment is the structure of full glass lens, if the resolution ratio of screen is FHD, i.e.,
Resolution ratio is 1920*1080, and the length that can be calculated laterally each pixel is 10 μm, and lateral chromatic aberration is as shown in Figure 3, it is known that
It needs three adjacent pixels forming a pixel unit, the total color difference of the pixel unit is possible to be told by human eye
There are problem, so single pixel point is good with respect to the display effect of human eye, it is known that the imaging effect of the lens system of the present embodiment
Well, aberration is small, clarity is high.
Embodiment two, as shown in figure 4, including the emergent pupil 11, exit lens 21, lens group 30, incident coaxially set gradually
Lens 22, screen 12, lens group 30 include the first lens, the second lens and third lens successively from emergent pupil 11 to screen 12, respectively
Item parameter is designed according to the following table 2.
Table 2, the design parameter of embodiment two
ER=20mm, FOV=60Deg, DoD=22mm can be obtained according to upper table 2, calculate and obtain 2ER*tan (FOV/2)=23
>22, meet 2ER*tan (FOV/2)>DoD, the structure that the present embodiment is combined for glass lens and plastic lens, if point of screen
Resolution is FHD, i.e., resolution ratio is 1920*1080, and the length that can be calculated laterally each pixel is 10 μm, and lateral chromatic aberration is such as
Shown in Fig. 5, it is known that need three adjacent pixels forming a pixel unit, the total color difference of the pixel unit is possible to
It is told by human eye there are problem, so single pixel point is good with respect to the display effect of human eye, it is known that the lens system of the present embodiment
The imaging effect of system is good, aberration is small, clarity is high.
Embodiment three, as shown in fig. 6, including the emergent pupil 11, exit lens 21, lens group 30, incident coaxially set gradually
Lens 22, screen 12, lens group 30 include the first lens, the second lens and third lens successively from emergent pupil 11 to screen 12, respectively
Item parameter is designed according to the following table 3.
Table 3, the design parameter of embodiment three
ER=20mm, FOV=60Deg, DoD=22mm can be obtained according to upper table 3, calculate and obtain 2ER*tan (FOV/2)=23
>22, meet 2ER*tan (FOV/2)>DoD, the structure that the present embodiment is combined for glass lens and plastic lens, if point of screen
Resolution is FHD, i.e., resolution ratio is 1920*1080, and the length that can be calculated laterally each pixel is 10 μm, and lateral chromatic aberration is such as
Shown in Fig. 7, it is known that need three adjacent pixels forming a pixel unit, the total color difference of the pixel unit is possible to
It is told by human eye there are problem, so single pixel point is good with respect to the display effect of human eye, it is known that the lens system of the present embodiment
The imaging effect of system is good, aberration is small, clarity is high.
Example IV, as shown in figure 8, including the emergent pupil 11, exit lens 21, lens group 30, incident coaxially set gradually
Lens 22, screen 12, lens group 30 include the first lens, the second lens, third lens and the to screen 12 successively from emergent pupil 11
Four lens, parameters are designed according to the following table 4.
Table 4, the design parameter of embodiment one
ER=20mm, FOV=60Deg, DoD=22mm can be obtained according to upper table 4, calculate and obtain 2ER*tan (FOV/2)=23
>22, meet 2ER*tan (FOV/2)>DoD, the present embodiment is the structure of overall plastic glue lens, if the resolution ratio of screen is FHD, i.e.,
Resolution ratio is 1920*1080, and the length that can be calculated laterally each pixel is 10 μm, and lateral chromatic aberration is as shown in Figure 9, it is known that
It needs three adjacent pixels forming a pixel unit, the total color difference of the pixel unit is possible to be told by human eye
There are problem, so single pixel point is good with respect to the display effect of human eye, it is known that the imaging effect of the lens system of the present embodiment
Well, aberration is small, clarity is high.
Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed,
But it should not be interpreted as limiting the scope of the present invention.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (8)
1. a kind of compact VR lens systems, emergent pupil (11) and screen (12) including coaxial arrangement, which is characterized in that it is described go out
Between pupil (11) and the screen (12) successively be equipped with exit lens (21), lens group (30) and entrance lens (22), it is described go out
Lens (21) are penetrated positioned at close to the side of the emergent pupil (11)；
Radius of curvature of the exit lens (21) close to (11) one side surface of emergent pupil is less than 0, the entrance lens (22)
Radius of curvature close to (12) one side surface of screen is more than 0；
The lens system meets below equation：
2ER*tan(FOV/2)>DoD
The field angle of the lens system is FOV, distance of exit pupil ER, and the catercorner length of the screen (12) is DoD.
2. a kind of compact VR lens systems according to claim 1, which is characterized in that the exit lens (21), institute
Lens group (30) and the entrance lens (22) are stated as coaxial arrangement.
3. a kind of compact VR lens systems according to claim 2, which is characterized in that the exit lens (21) and institute
State emergent pupil (11) coaxial arrangement.
4. a kind of compact VR lens systems according to claim 1, which is characterized in that the exit lens (21), institute
The diameter for stating entrance lens (22) and the lens group (30) is respectively less than equal to 45mm.
5. a kind of compact VR lens systems according to claim 1, which is characterized in that the exit lens (21) and institute
It is concavees lens to state entrance lens (22).
6. a kind of compact VR lens systems according to claim 5, which is characterized in that the lens group (30) is including extremely
Few 1 convex lens.
7. a kind of compact VR shows equipment, which is characterized in that compact including one kind described in claim 1~6 any one
Type VR lens systems.
8. a kind of compact VR according to claim 7 shows equipment, which is characterized in that the exit lens (21), institute
State the lens barrel that rectangle is arranged with outside lens group (30) and the entrance lens (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721620071.7U CN207502825U (en) | 2017-11-28 | 2017-11-28 | A kind of compact VR lens systems and VR show equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721620071.7U CN207502825U (en) | 2017-11-28 | 2017-11-28 | A kind of compact VR lens systems and VR show equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207502825U true CN207502825U (en) | 2018-06-15 |
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ID=62507380
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721620071.7U Active CN207502825U (en) | 2017-11-28 | 2017-11-28 | A kind of compact VR lens systems and VR show equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839739A (en) * | 2017-11-28 | 2019-06-04 | 广东烨嘉光电科技股份有限公司 | A kind of compact VR lens system and VR show equipment |
| TWI697694B (en) * | 2019-06-17 | 2020-07-01 | 宏碁股份有限公司 | Augmented reality device |
-
2017
- 2017-11-28 CN CN201721620071.7U patent/CN207502825U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839739A (en) * | 2017-11-28 | 2019-06-04 | 广东烨嘉光电科技股份有限公司 | A kind of compact VR lens system and VR show equipment |
| TWI697694B (en) * | 2019-06-17 | 2020-07-01 | 宏碁股份有限公司 | Augmented reality device |
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