CN106019567B - A kind of eyepiece system and wear display equipment - Google Patents
A kind of eyepiece system and wear display equipment Download PDFInfo
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- CN106019567B CN106019567B CN201610509759.1A CN201610509759A CN106019567B CN 106019567 B CN106019567 B CN 106019567B CN 201610509759 A CN201610509759 A CN 201610509759A CN 106019567 B CN106019567 B CN 106019567B
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- fresnel lenses
- eyepiece system
- display screen
- spherical surface
- eyepiece
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/001—Eyepieces
-
- 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)
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Abstract
The invention discloses a kind of eyepiece system and wear display equipment.The eyepiece system includes setting gradually along the direction of light incidence: spherical surface display screen and Fresnel Lenses；Horizontal line where the center line of spherical surface display screen and the optical axis of Fresnel Lenses overlaps, and spherical surface display screen is convex to the Fresnel Lenses；Fresnel Lenses, which has, to be convex to the first surface of optical path diaphragm and is convex to the second surface of spherical surface display screen.Technical solution of the present invention, to share the focal power of eyepiece system, reduces the astigmatism of system by the way that the face type of Fresnel Lenses is rationally arranged using the technological means that Fresnel Lenses and spherical surface display screen combine；And by the way that spherical surface display screen is rationally arranged, the curvature of field of system is reduced, achievees the purpose that improve edge imaging image quality.
Description
Technical field
The present invention relates to optical technical field, in particular to a kind of eyepiece system and display equipment is worn.
Background technique
Currently, the optical system of virtual reality (Virtual Reality, VR) is largely single eyeglass composition, there are nothings
It is the problem of color difference, astigmatism and curvature of field that method calibration edge generates, thus caused especially when VR optical system field of view angle is bigger
Edge imaging is more unintelligible.Since color difference can be compensated with software, thus astigmatism and the curvature of field are caused under edge imaging quality
The main reason for drop.
Based on foregoing description, a kind of novel eyepiece system is needed.To meet the edge under the big field angle of VR optical system
Imaging.
Summary of the invention
In view of the above problems, it the present invention provides a kind of eyepiece system and display equipment is worn, is constituted with solving single eyeglass
The unsharp problem of optical system edge imaging.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
On the one hand, the embodiment of the invention provides a kind of eyepiece system, which includes the side along light incidence
To what is set gradually: spherical surface display screen and Fresnel Lenses；
Horizontal line where the center line of spherical surface display screen and the optical axis of Fresnel Lenses overlaps, and spherical surface display screen is convex
To the Fresnel Lenses；
Fresnel Lenses, which has, to be convex to the first surface of optical path diaphragm and is convex to the second surface of spherical surface display screen.
Preferably, the first surface of Fresnel Lenses is aspherical, and the second surface of Fresnel Lenses is curved substrate
Fresnel surface.
Preferably, the asphericity coefficient of first surface meets following formula:
Wherein, z1 is the coordinate of the optical axis direction along eyepiece system, and Y1 is the diameter that Fresnel Lenses length unit is unit
To coordinate, C1 is the curvature of Fresnel Lenses first surface, αiIt is the coefficient of each high-order term, N=4.
Preferably, the Fresnel surface coefficient of second surface meets following formula:
Wherein, z2 is the coordinate of the optical axis direction along eyepiece system, and Y2 is the diameter that Fresnel Lenses length unit is unit
To coordinate, C2 is the curvature of Fresnel Lenses second surface, and k is the circular cone coefficient of Fresnel Lenses second surface.
Preferably, half bore of first surface is 26mm, and the radius of first surface is 383.75mm, 4 times of first surface
Term coefficient is 3.13681E-6, and 6 term coefficients of first surface are -2.398043E-9, and 8 term coefficients of first surface are
1.00577E-12。
Preferably, half bore of second surface is 26mm, and the radius of the curved substrate of second surface is -163.7335mm,
The circular cone coefficient of second surface is 11.0057.
Preferably, the focal length of eyepiece system is 38mm, axial length 44mm, as circular diameter is 72mm.
Preferably, Fresnel Lenses is the plastic material of COC-K26R model.
Preferably, spherical surface display screen is 3.8 inches.
On the other hand, the embodiment of the invention also provides one kind to wear display equipment, including symmetrical left eye eyepiece system
The eyepiece system provided by adopting the above technical scheme with right eye eyepiece system, the left eye eyepiece system and right eye eyepiece system.
The beneficial effect of the embodiment of the present invention is: eyepiece system of the invention uses Fresnel Lenses and spherical surface display screen phase
In conjunction with technological means share the focal power of eyepiece system by the way that the face type of Fresnel Lenses is rationally arranged, reduce system as
It dissipates；And by the way that spherical surface display screen is rationally arranged, the curvature of field of system is reduced, achievees the purpose that improve edge imaging image quality.
Detailed description of the invention
Fig. 1 is the imaging schematic diagram of eyepiece system；
Fig. 2 is the light path schematic diagram of eyepiece system provided by the invention；
Fig. 3 is the field curve schematic diagram using the eyepiece system of flat-faced screen；
The field curve schematic diagram of Fig. 4 eyepiece system provided by the invention using spherical surface display screen；
Fig. 5 is the field curve schematic diagram using the eyepiece system of the Fresnel Lenses of planar substrates；
Fig. 6 is the field curve schematic diagram of the eyepiece system of the Fresnel Lenses provided by the invention using curved substrate；
Fig. 7 is the point range figure of eyepiece system in the prior art；
Fig. 8 is the point range figure of eyepiece system provided by the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one:
Fig. 1 is the imaging schematic diagram of eyepiece system, the light that display screen issues shape at 2m before human eye after lens imaging
It is received at a huge virtual image, then by human eye, to give the feeling of shock.The effect of lens and magnifying glass in the present invention
It is similar, the information on amplifying display screen, then at a distance at the virtual image.
When designing the eyepiece system, using reversed trace, make the image planes display screen of eyepiece system, object plane is eyepiece system
The virtual image of generation, pupil of human are located at optical path diaphragm, and lens are located among optical path diaphragm and display screen.
Since the color difference of the optical system of single eyeglass composition can be compensated with software, and astigmatism and the curvature of field are to cause edge
The main reason for image quality declines, therefore, the present invention combine the Fresnel Lenses of curved substrate and spherical surface display screen to come
Improve edge image quality, keeps edge imaging quality and center image quality almost the same.
Based on above-mentioned design philosophy, a kind of eyepiece system is present embodiments provided, as shown in Fig. 2, Fig. 2 mentions for the present invention
The light path schematic diagram of the eyepiece system of confession, the eyepiece system include setting gradually along the direction of light incidence: spherical surface is shown
Screen 101 and Fresnel Lenses 102；
The center line of spherical surface display screen 101 overlaps with the horizontal line where the optical axis of Fresnel Lenses 102, and spherical surface is aobvious
Display screen 101 is convex to Fresnel Lenses 102；
Fresnel Lenses 102 has the first surface S1 for being convex to optical path diaphragm 103 and is convex to the second of spherical surface display screen 101
Surface S2.
The present embodiment shares the focal power of eyepiece system rationally by the face type of setting Fresnel Lenses to reduce system
Astigmatism；And the curvature of field of system is reduced by the way that spherical surface display screen is rationally arranged, so as to improve edge image quality.
In order to be further reduced the astigmatism of eyepiece system, the first surface S1 of setting Fresnel Lenses 102 be it is aspherical,
The second surface S2 of Fresnel Lenses 102 is the Fresnel surface of curved substrate.
Preferably, Fresnel Lenses is the plastic material of COC-K26R model to the present embodiment.This preferred embodiment passes through setting
Fresnel Lenses is plastic material, guarantees the lightweight of eyepiece system.
Wherein, COC is the transparent copolymerization molecular material of the novel amorphism with cyclic olefin structure, has and is used as light
The excellent performances such as the very important low birefringence of department of the Chinese Academy of Sciences's part, low water absorbable and high rigidity.
In a specific implementation of the present embodiment, the asphericity coefficient of 102 first surface S1 of Fresnel Lenses is full
Foot states formula:
Wherein, z1 is the coordinate of the optical axis direction along eyepiece system, and Y1 is the diameter that Fresnel Lenses length unit is unit
To coordinate, C1 is the curvature of Fresnel Lenses first surface, αiIt is the coefficient of each high-order term, N=4.
The Fresnel surface coefficient of 102 second surface S2 of Fresnel Lenses meets following formula:
Wherein, z2 is the coordinate of the optical axis direction along eyepiece system, and Y2 is the diameter that Fresnel Lenses length unit is unit
To coordinate, C2 is the curvature of Fresnel Lenses second surface, and k is the circular cone coefficient of Fresnel Lenses second surface.
In this specific implementation, half bore of first surface S1 is 26mm, and the radius of first surface S1 is
4 term coefficients of 383.75mm, first surface S1 are 3.13681E-6,6 term coefficients of first surface S1 are-
2.398043E-9 8 term coefficients of first surface S1 are 1.00577E-12.
Half bore of second surface S2 is 26mm, and the radius of the curved substrate of second surface S2 is -163.7335mm, the
The circular cone coefficient of two surface S2 is 11.0057.
The focal length of eyepiece system in this specific implementation is 38mm, axial length 44mm, as circular diameter is 72mm.
In the above-mentioned technical solutions, the eyepiece system in this specific implementation can reach 110 ° of maximum field of view angle,
The diameter of the effective zone of action EYEBox of human eye is the technical indicator of 8mm, and the spherical surface display screen of the eyepiece system is 3.8 English
It is very little.
As shown in Figure 3 and Figure 4, Fig. 3 is using the field curve schematic diagram of the eyepiece system of flat-faced screen, and Fig. 4 is this
The field curve schematic diagram of the eyepiece system using spherical surface display screen provided is invented, t line is meridian in field curve schematic diagram
The curvature of field, s line are Sagittal field curvature, and the difference of meridianal curvature of field and Sagittal field curvature is the astigmatism of system, the curvature of field and astigmatic influence optical system
The aberration of the outer field rays of axis of uniting, difference cross the serious image quality for influencing system off-axis ray of conference.Fig. 3 and Fig. 4 are
Field curve schematic diagram under same field corner condition, comparison diagram 3 and Fig. 4 can intuitively find out the curvature of field of flat-faced screen
Bigger, the curvature of field of marginal position has reached 5mm, seriously affects imaging definition, and the present invention has the mesh of spherical surface display screen
The curvature of field of mirror system is much smaller.
As shown in Figure 5 and Figure 6, Fig. 5 is to be illustrated using the field curve of the eyepiece system of the Fresnel Lenses of planar substrates
Figure, Fig. 6 be the Fresnel Lenses provided by the invention using curved substrate eyepiece system field curve schematic diagram, Fig. 5 and
Fig. 6 is the field curve schematic diagram under same field corner condition, comparison diagram 5 and Fig. 6, can intuitively find out the phenanthrene of planar substrates
The curvature of field and astigmatism of Nie Er lens are bigger, and the curvature of field of marginal position has reached 3mm, seriously affect imaging definition, and this hair
The curvature of field and astigmatism of the eyepiece system of the bright Fresnel Lenses with curved substrate are much smaller.
As shown in Figure 7 and Figure 8, Fig. 7 is the point range figure of eyepiece system in the prior art, and Fig. 8 is mesh provided by the invention
The point range figure of mirror system, comparison diagram 7 and Fig. 8, can intuitively find out the disperse spot diameter of eyepiece system in the prior art compared with
Greatly, the disperse spot diameter of eyepiece system of the invention is relatively small；Since the image quality of the smaller proof system of disc of confusion is better,
As it can be seen that eyepiece system of the invention is significantly larger than eyepiece system in the prior art in the quality of edge imaging.
Wherein, above-mentioned eyepiece system in the prior art is the optical system being made of common spherical lens and flat-faced screen
System.
Embodiment two:
Based on the inventive concept being the same as example 1, present embodiments provides one kind and wear display equipment, this wears aobvious
Show equipment, including symmetrical left eye eyepiece system and right eye eyepiece system, left eye eyepiece system and right eye eyepiece system are using real
Apply the eyepiece system in example one.
In conclusion the technological means that eyepiece system of the invention uses Fresnel Lenses and spherical surface display screen to combine,
By the way that the face type of Fresnel Lenses is rationally arranged, the focal power of eyepiece system is shared, the astigmatism of system is reduced；And pass through conjunction
Reason setting spherical surface display screen, reduces the curvature of field of system, achievees the purpose that improve edge imaging image quality.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (5)
1. a kind of eyepiece system, which is characterized in that the eyepiece system includes setting gradually along the direction of light incidence: spherical surface
Display screen and Fresnel Lenses；
The center line of the spherical surface display screen overlaps with the horizontal line where the optical axis of the Fresnel Lenses, the spherical surface
Display screen is convex to the Fresnel Lenses；
The Fresnel Lenses, which has, to be convex to the first surface of optical path diaphragm and is convex to the second surface of spherical surface display screen；The phenanthrene
The first surface of Nie Er lens be it is aspherical, the second surface of the Fresnel Lenses is the Fresnel surface of curved substrate；
The asphericity coefficient of the first surface meets following formula:
Z1 is the coordinate along the optical axis direction of the eyepiece system, and Y1 is that Fresnel Lenses length unit is that the radial of unit sits
Mark, C1 are the curvature of Fresnel Lenses first surface, αiIt is the coefficient of each high-order term, N=4；
The Fresnel surface coefficient of the second surface meets following formula:
Z2 is the coordinate along the optical axis direction of the eyepiece system, and Y2 is that Fresnel Lenses length unit is that the radial of unit sits
Mark, C2 are the curvature of Fresnel Lenses second surface, and k is the circular cone coefficient of Fresnel Lenses second surface；
Wherein, half bore of the first surface is 26mm, and the radius of the first surface is 383.75mm, the first surface
4 term coefficients be 3.13681E-6,6 term coefficients of the first surface are -2.398043E-9, the 8 of the first surface
Secondary term coefficient is 1.00577E-12；
Half bore of the second surface is 26mm, and the radius of the curved substrate of the second surface is -163.7335mm, described
The circular cone coefficient of second surface is 11.0057.
2. eyepiece system according to claim 1, which is characterized in that the focal length of the eyepiece system is 38mm, axially length
Degree is 44mm, is 72mm as circular diameter.
3. according to claim 1 or 2 described in any item eyepiece systems, which is characterized in that the Fresnel Lenses is COC-
The plastic material of K26R model.
4. eyepiece system according to claim 3, which is characterized in that the spherical surface display screen is 3.8 inches.
5. one kind wears display equipment, which is characterized in that including symmetrical left eye eyepiece system and right eye eyepiece system, the left side
Eye eyepiece system and right eye eyepiece system use such as the described in any item eyepiece systems of Claims 1-4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610509759.1A CN106019567B (en) | 2016-06-30 | 2016-06-30 | A kind of eyepiece system and wear display equipment |
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| CN201610509759.1A CN106019567B (en) | 2016-06-30 | 2016-06-30 | A kind of eyepiece system and wear display equipment |
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| CN106019567A CN106019567A (en) | 2016-10-12 |
| CN106019567B true CN106019567B (en) | 2019-09-27 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405820A (en) | 2016-10-14 | 2017-02-15 | 浙江舜宇光学有限公司 | Eye lens |
| CN108227190B (en) * | 2016-12-21 | 2020-05-01 | 深圳市掌网科技股份有限公司 | Lens module |
| JP6651639B2 (en) * | 2017-07-14 | 2020-02-19 | 浙江舜宇光学有限公司 | Eyepiece and display including the eyepiece |
| CN107121774B (en) * | 2017-07-14 | 2023-01-13 | 浙江舜宇光学有限公司 | Eyepiece and display device including the same |
| CN109643024A (en) * | 2017-08-15 | 2019-04-16 | 深圳市柔宇科技有限公司 | Wear display equipment |
| CN107632388B (en) * | 2017-10-24 | 2024-04-02 | 歌尔光学科技有限公司 | Eyepiece and head-mounted display device |
| CN110095868A (en) * | 2019-03-19 | 2019-08-06 | 北京灵犀微光科技有限公司 | Eliminate the optical projection system and wearable device of the curvature of field |
| CN114236833A (en) * | 2021-11-30 | 2022-03-25 | 歌尔光学科技有限公司 | Optical system and head-mounted display equipment |
| CN114047624B (en) * | 2022-01-12 | 2022-08-23 | 深圳纳德光学有限公司 | Eyepiece optical structure, eyepiece system and optical equipment |
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| CN101843108A (en) * | 2007-08-31 | 2010-09-22 | 3Dis有限公司 | The real image display device with wide viewing angle |
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| CN1163776C (en) * | 1999-08-18 | 2004-08-25 | 郑国星 | Virtual screen video image display method and device |
| JP2011133633A (en) * | 2009-12-24 | 2011-07-07 | Olympus Corp | Visual display device |
| CN106338820B (en) * | 2014-12-17 | 2018-09-04 | 歌尔科技有限公司 | A kind of micro display eyepiece wears eyepiece system and wears visual device |
| CN204595338U (en) * | 2015-05-12 | 2015-08-26 | 成都理想境界科技有限公司 | Wear-type virtual reality display device |
| CN205958837U (en) * | 2016-06-30 | 2017-02-15 | 北京小鸟看看科技有限公司 | Eyepiece system with wear display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101843108A (en) * | 2007-08-31 | 2010-09-22 | 3Dis有限公司 | The real image display device with wide viewing angle |
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