Virtual reality optical lens

Abstract

To provide a virtual reality optical lens according to the present invention related to an optical lens field.SOLUTION: The virtual reality optical lens includes, in order from a front side to a rear side: an image surface that has a circular polarizer affixed to the rear side of the image surface in order to emit light; a third lens provided with a partially reflective element provided on a front-side surface; a second lens; a first lens provided with a composite film on a front-side surface, in which the composite film includes a polarization reflective film and a 1 / 4 wavelength sheet, the polarization reflective film is affixed to the front- side surface of the first lens, and the 1 / 4 wavelength sheet is affixed to the front side of the polarization reflective film; and an aperture that is located on a rear side of an optical system. The virtual reality optical lens satisfies a following relation expression: 1.80≤nd2, VD≥10.00 mm and SDmax≤23.00 mm where: VD is a maximum visible diameter of the virtual reality optical lens; nd2 is a refractive index of the second lens; and SDmax is a maximum semi-diameter of lenses of the virtual reality optical lens.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the field of optical lenses, and more particularly to virtual reality optical lenses suitable for VR (Virtual Reality) devices. [Background technology]

[0002] In recent years, with the emergence of various smart devices, the demand for miniaturized virtual reality optical lenses has increased. In addition to the miniaturization of the pixel size of the photosensitive element, the development trends of current electronic products such as functionality, thinness, and convenience have led to miniaturized virtual reality optical lenses with good imaging quality becoming the mainstream in the current market. In order to obtain better imaging quality, multi-chip lens configurations are often used. In addition, with the development of technology and the diversification of user needs, especially application fields such as virtual reality, augmented reality, and mixed reality are growing rapidly, and from the perspective of user experience, there is a great demand for virtual reality optical lenses that combine small size and excellent imaging methods. Summary of the Invention

[0003] In view of the above problems, an object of the present invention is to provide a virtual reality optical lens that has good optical performance while satisfying the design requirements for compactness and light weight.

[0004] In order to solve the above technical problems, one embodiment of the present invention provides a virtual reality optical lens, the virtual reality optical lens including, in order from the front side to the rear side, an image surface having a circular polarizer attached to the rear side of the image surface for outputting light; a third lens having a partially reflective element disposed on a front surface thereof; A second lens; A first lens having a composite film on its front surface, the composite film including a polarizing reflective film and a quarter-wave sheet, the polarizing reflective film being attached to the front surface of the first lens, and the quarter-wave sheet being attached to the front side of the polarizing reflective film; a stop located behind the optical system; The maximum apparent diameter of the virtual reality optical lens is VD, the refractive index of the second lens is nd2, and the maximum lens half diameter of the virtual reality optical lens is SDmax, which satisfies the following relationship: 1.80≦nd2 VD≧10.00mm SDmax≦23.00mm

[0005] Preferably, the rear surface of the first lens is aspheric.

[0006] Preferably, the rear and front surfaces of the second lens are spherical, and the rear and front surfaces of the third lens are aspheric.

[0007] Preferably, the field of view angle of the virtual reality optical lens is FOV, which satisfies the following relationship: 94.50°≦FOV

[0008] Preferably, the total optical length of the virtual reality optical lens is TTL and satisfies the following relationship: TTL≦19.427mm

[0009] Preferably, the partially reflective element is a semi-transparent semi-reflective film.

[0010] Preferably, the reflectance and transmittance of the semi-transparent semi-reflective film are both 50%.

[0011] Preferably, the reflectance of said polarizing reflective film is ≧95%.

[0012] Preferably, the optical distortion of said virtual reality optical lens is ≦28.4%.

[0013] Preferably, the aberration of the virtual reality optical lens is ΔE, satisfying |ΔE|≦57 μm.

[0014] Preferably, the focal length of the virtual reality optical lens is f, and the total optical length of the virtual reality optical lens is TTL, satisfying the following relation: TTL / f≦0.79

[0015] Preferably, the image surface is a display and is 2.1 inches in size.

[0016] The beneficial effect of the present invention is that the virtual reality optical lens according to the present invention has good optical performance and has the characteristics of small size and light weight. By providing a partial reflection element on the front surface of the third lens and providing a composite film including a polarizing reflection film and a quarter wavelength sheet in sequence on the first lens, a three-lens optical path folding configuration is realized, the half aperture of the lens is controlled, the optical system is miniaturized, the degree of freedom in design is improved, and higher performance can be obtained, so that the imaging quality can be improved. In addition, since the maximum visual diameter is 10.00 mm or more, an optimal display effect can be obtained without complicated adjustment, and both miniaturization and high imaging performance are achieved. In addition, the combination of high refractive index material and low refractive index material reduces aberration using one high refractive index glass. [Brief description of the drawings]

[0017] In order to more clearly describe the technical solutions in the embodiments of the present invention, the following briefly describes the drawings that need to be used in the description of the embodiments. It should be noted that the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can obtain other drawings based on these drawings without creative work.

[0018] [Figure 1] 1 is a schematic diagram illustrating the configuration of a virtual reality optical lens according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a point sequence diagram of the virtual reality optical lens shown in FIG. 1. [Diagram 3] FIG. 2 is a schematic diagram of the magnification aberration of the virtual reality optical lens shown in FIG. 1. [Figure 4] 2 is a schematic diagram of the field curvature and distortion of the virtual reality optical lens shown in FIG. 1. [Diagram 5] FIG. 2 is a schematic diagram including a film layer configuration of the virtual reality optical lens shown in FIG. 1. [Figure 6]FIG. 4 is a schematic diagram illustrating the configuration of a virtual reality optical lens according to a second embodiment of the present invention. [Figure 7] FIG. 7 is a dot-sequence diagram of the virtual reality optical lens shown in FIG. 6. [Figure 8] FIG. 7 is a schematic diagram of the magnification aberration of the virtual reality optical lens shown in FIG. 6. [Figure 9] FIG. 7 is a schematic diagram of the field curvature and distortion of the virtual reality optical lens shown in FIG. 6. [Figure 10] FIG. 7 is a schematic diagram including a film layer configuration of the virtual reality optical lens shown in FIG. [Figure 11] FIG. 13 is a schematic diagram illustrating the configuration of a virtual reality optical lens according to a comparative embodiment of the present invention. [Figure 12] FIG. 12 is a dot sequence diagram of the virtual reality optical lens shown in FIG. [Figure 13] FIG. 12 is a schematic diagram of the magnification aberration of the virtual reality optical lens shown in FIG. [Figure 14] 12 is a schematic diagram of the field curvature and distortion of the virtual reality optical lens shown in FIG. 11. [Figure 15] FIG. 12 is a schematic diagram including the film layer configuration of the virtual reality optical lens shown in FIG. 11. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] In order to make the objectives, technical means and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that those skilled in the art can understand that many technical details are proposed in various embodiments of the present invention to allow readers to better understand the present invention. However, even without these technical details and various modifications and changes based on the following embodiments, the technical solution claimed to be protected by the present invention can be realized.

[0020] (First embodiment) 1 and 5, the present invention provides a virtual reality optical lens 10. Specifically, the virtual reality optical lens 10 includes, from the front to the rear, an image surface 11, a circular polarizer 12, a partially reflective element 13, a third lens 14, a second lens 15, a quarter-wave sheet 16, a polarizing reflective film 17, a first lens 18, and an aperture 19.

[0021] The image surface 11 emits light and has a circular polarizer 12 attached to the rear side of the image surface 11. In this embodiment, the image surface 11 is a display and has a size of 2.1 inches. The light from the display passes through the circular polarizer 12 to form left-handed circularly polarized LCP.

[0022] The front surface 141 of the third lens 14 is provided with a partially reflective element 13, so that some of the light is reflected and some of the light is incident on the third lens 14, where the light is left-handed circularly polarized LCP.

[0023] The left-handed circularly polarized light LCP incident on the third lens 14 is refracted by the third lens 14 and exits to the second lens 15 , and is refracted by the second lens 15 and exits to the first lens 18 .

[0024] A composite film is provided on the front surface 181 of the first lens 18, and the composite film includes a polarizing reflective film 17 and a quarter-wave sheet 16. The polarizing reflective film 17 is attached to the front surface 181 of the first lens 18, and the quarter-wave sheet 16 is attached to the front side of the polarizing reflective film 17. The left-handed circularly polarized LCP passes through the quarter-wave sheet 16 for the first time and is converted into linearly polarized S light. The left-handed circularly polarized LCP is then reflected by the polarizing reflective film 17 to the quarter-wave sheet 16 again. The reflected light is linearly polarized S light as it is, and passes through the quarter-wave sheet 16 for the second time and is converted into left-handed circularly polarized LCP. The left-handed circularly polarized LCP is then reflected by the second lens 18 for the second time. The light first enters the first lens 15, is refracted in turn by the second lens 15 and the third lens 14, then enters the partial reflection element 13, is partially reflected by the partial reflection element 13, and the reflected light is converted to right-handed circularly polarized light RCP and enters the third lens 14 for the third time, is refracted in turn by the third lens 14 and the second lens 15, then enters the quarter-wave sheet 16, passes through the quarter-wave sheet 16 and is converted to linearly polarized S light and enters the polarized reflective film 17. Since the polarized reflective film 17 has the property of reflecting linearly polarized S light and the property of transmitting linearly polarized P light, the linearly polarized P light enters the first lens 18, is refracted through the first lens 18, and enters the aperture 19.

[0025] In this embodiment, the three-plate optical path folding configuration significantly reduces the total optical length TTL of the virtual reality optical lens 10, and reduces the volume of the virtual reality optical lens 10.

[0026] In this embodiment, the first lens 18 is made of a plastic material, the second lens 15 is made of a glass material, and the third lens 14 is made of a plastic material. In any other embodiment, each lens may be made of other materials.

[0027] The refractive index of the second lens 15 is defined as nd2, and satisfies the following relation: 1.80≦nd2. The second lens 15 is selected as H-ZF52 (glass) material, and the combination of high refractive index material and low refractive index material and the use of one high refractive index glass can effectively reduce the aberration while reducing the cost.

[0028] The position of the aperture 19 is a position that simulates the position of the surface of the human eye, and the diameter of the aperture 19 is 10.00 mm. The maximum visual diameter of the virtual reality optical lens 10 is defined as VD, which satisfies the following relationship: 10*10mm≦VD, that is, the human eye can see a clear image when the diameter moves within a range of at least 10 mm, and the user can see the best display effect at the optimal position without making complicated adjustments, and the FOV can be increased and the FOV can reach more than 90°.

[0029] The maximum lens half diameter of the virtual reality optical lens 10 is defined as SDmax, and the following relational expression is satisfied: SDmax≦23.00 mm, which is advantageous for reducing the volume of the virtual reality optical lens, and the three-lens optical path folding configuration increases the design freedom and provides higher optical performance, thereby improving the imaging quality.

[0030] In this embodiment, the rear surface 183 of the first lens 18 is aspheric, and providing at least one aspheric surface is advantageous in shortening the overall optical length. In any other embodiment, a free-form surface may be used.

[0031] In this embodiment, the rear surface 153 and the front surface 151 of the second lens 15 are both spherical, and the rear surface 143 and the front surface 141 of the third lens 14 are both aspheric, and the application of aspheric surfaces is advantageous for correcting aberrations of the optical system. In any other embodiment, a free-form surface can also be used.

[0032] In this embodiment, the front surface 181 of the first lens 18 is flat, and the rear surface 183 of the first lens 18 is convex. The front surface 151 of the second lens 15 is concave, and the rear surface 153 of the second lens 15 is concave. The front surface 141 of the third lens 14 is convex, and the rear surface 143 of the third lens 14 is convex.

[0033] In addition, in this embodiment, the viewing angle of the virtual reality optical lens 10 is defined as FOV, which satisfies the following relation: 94.50°≦FOV, thereby realizing a wide viewing angle so that the user can see the best display effect at the optimal position.

[0034] In this embodiment, the total optical length of the virtual reality optical lens 10 is defined as TTL, and satisfies the following relation: TTL≦19.427 mm. This is advantageous for realizing an ultra-thin structure.

[0035] In addition, in this embodiment, the partially reflective element 13 is a semi-transparent semi-reflective film, and the reflectance and transmittance of the semi-transparent semi-reflective film are both 50%, so that the optical performance of the virtual reality optical lens 10 is better. In other embodiments, the reflection / transmission ratio of the partially reflective element 13 can be adjusted according to specific design requirements, and can be 55:45, 60:40, etc.

[0036] In addition, in this embodiment, the reflectance of the polarizing reflective film 17 is ≧95%, and the higher the reflectance, the better the optical efficiency of the optical system 10 and the higher the display brightness.

[0037] In addition, in this embodiment, the optical distortion of the virtual reality optical lens 10 is ≦28.4%, which makes the optical performance of the virtual reality optical lens 10 better and reduces distortion, providing a more realistic VR environment to the user.

[0038] In this embodiment, the aberration of the virtual reality optical lens 10 is defined as ΔE, and satisfies |ΔE|≦57 μm.

[0039] In this embodiment, the focal length of the virtual reality optical lens is defined as f, and the total optical length of the virtual reality optical lens is defined as TTL, and the following relational expression is satisfied: TTL / f≦0.79. This is advantageous for slimming.

[0040] In addition, in this embodiment, the rear surface 183 of the first lens 18, the front surface 151 of the second lens 15, the rear surface 153 of the second lens 15, and the rear surface 143 of the third lens 14 are all provided with anti-reflection films, which improve the optical efficiency of the optical system 10 and increase the brightness.

[0041] In addition, in this embodiment, since the aperture value FNO of the virtual reality optical lens 10 is 2.47 or less, the virtual reality optical lens 10 can be made compact and the imaging performance can be improved.

[0042] The virtual reality optical lens 10 of the present invention will be described below with reference to the following examples. The symbols used in each example are as follows. The focal length, axial distance, central radius of curvature, axial thickness, inflection point position, and stationary point position are all in mm.

[0043] TTL: total optical length, indicating the axial distance from the image plane 11 to the rear surface 183 of the first lens 18, in mm;

[0044] FNO: The ratio of the effective focal length of the virtual reality optical lens to the entrance pupil diameter.

[0045] Preferably, the front and / or rear surface of the lens may be provided with an inflection point and / or a stationary point to meet high quality imaging requirements, and specific embodiments will be described below.

[0046] Tables 1 and 2 show design data for the virtual reality optical lens 10 according to the first embodiment of the present invention.

[0047] JPEG2025009717000002.jpg130160

[0048] Here, the meanings of the symbols are as follows: R: radius of curvature at the center of the optical surface; R1: central radius of curvature of the rear surface of the first lens 18; R2: the central radius of curvature of the front surface of the first lens 18; R3: central radius of curvature of the rear surface of the second lens 15; R4: central radius of curvature of the front surface of the second lens 15; R5: central radius of curvature of the rear surface of the third lens 14; R6: central radius of curvature of the front surface of the third lens 14; d: Axial thickness of the lens, axial distance between the lenses (to make it easier to understand the light path, the light propagation from the rear to the front is a positive value, and the light propagation from the front to the rear is a negative value); d0: the axial distance from the aperture 19 to the rear surface 183 of the first lens 18; d1: axial thickness of the first lens 18; d2: the axial distance from the front surface 181 of the first lens 18 to the rear surface 153 of the second lens 15; d3: axial thickness of the second lens 15; d4: the axial distance from the front surface 151 of the second lens 15 to the rear surface 143 of the third lens 14; d5: axial thickness of the third lens 14; d6: the negative value of the on-axis thickness of the third lens 14; d7: the negative value of the on-axis distance from the front surface 151 of the second lens 15 to the rear surface 143 of the third lens 14; d8: the negative value of the axial thickness of the second lens 15; d9: the negative value of the on-axis distance from the front surface 181 of the first lens 18 to the rear surface 153 of the second lens 15; d10: the axial distance from the front surface 141 of the third lens 14 to the image plane 11; nd: refractive index of d-line (d-line is green light with a wavelength of 546 nm); nd1: refractive index of the first lens 18 at the d line; nd2: refractive index of the second lens 15 at the d line; nd3: refractive index of the third lens 14 at the d line; vd: Abbe number; v1: Abbe number of the first lens 18; v2: Abbe number of the second lens 15; v3: Abbe number of the third lens 14.

[0049] Table 2 shows the aspheric data of each lens in the virtual reality optical lens 10 according to the first embodiment of the present invention.

[0050] JPEG2025009717000003.jpg109164

[0051] For convenience, the aspheric surface of each lens surface is expressed by the following formula (1). However, the present invention is not limited to the polynomial form of the aspheric surface expressed by this formula (1).

[0052] [Formula 1] z=(cr 2 ) / {1+[1-(k+1)(c 2 r 2 )] 1 / 2}+A4r 4 +A6r 6 +A8r 8 +A10r 10 +A12r 12 +A14r 14 +A16r 16 +A18r 18 +A20r 20 +A22r 22 +A24r 24 +A26r 26 +A28r 28 +A30r 30 (1)

[0053] Here, k is the conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 are aspheric coefficients, c is the curvature at the center of the optical surface, r is the perpendicular distance between a point on the aspheric curve and the optical axis, and z is the aspheric depth (the perpendicular distance between the point on the aspheric curve where the optical axis is r and the facet that is tangent to the vertex on the aspheric optical axis).

[0054] 2 is a point sequence diagram of the virtual reality optical lens 10. As can be seen from FIG. 2, the virtual reality optical lens 10 has a small dispersion spot size and a good imaging effect.

[0055] Fig. 3 is a schematic diagram showing magnification aberrations after light of wavelengths 470 nm, 546 nm, and 650 nm passes through the virtual reality optical lens 10 of the first embodiment. Fig. 4 is a schematic diagram showing field curvature and distortion after light of wavelength 546 nm passes through the virtual reality optical lens 10 of the first embodiment. In Fig. 4, field curvature S is the field curvature in the axial direction, and T is the field curvature in the meridian direction.

[0056] In this embodiment, the virtual reality optical lens 10 has an entrance pupil diameter ENDP of 10,000 mm, a full field of view image height IH of 19.152 mm, and a diagonal field of view angle FOV of 94.50°. The virtual reality optical lens 10 meets the design requirements of a small volume and a maximum visual diameter of 10.00 mm or more. The three-lens optical path folding configuration increases the design freedom and provides higher performance, thereby improving the imaging quality. The on-axis and off-axis aberrations are sufficiently corrected to reduce aberrations, and the virtual reality optical lens 10 has excellent optical characteristics.

[0057] As shown in Table 7, the first embodiment satisfies each of the conditional expressions.

[0058] Second embodiment The second embodiment is basically the same as the first embodiment, and the reference symbols have the same meanings as in the first embodiment, so only the differences will be listed below.

[0059] FIG. 6 shows a virtual reality optical lens 20 according to a second embodiment of the invention.

[0060] Tables 3 and 4 show design data for the virtual reality optical lens 20 according to the second embodiment of the present invention.

[0061] JPEG2025009717000004.jpg130160

[0062] Table 4 shows the aspheric data of each lens in the virtual reality optical lens 20 according to the second embodiment of the present invention.

[0063] JPEG2025009717000005.jpg109158

[0064] 7 is a point sequence diagram of the virtual reality optical lens 20. As can be seen from FIG 7, the virtual reality optical lens 20 has a small dispersion spot size and a good imaging effect.

[0065] Fig. 8 is a schematic diagram showing magnification aberrations after light of wavelengths 470 nm, 546 nm, and 650 nm passes through the virtual reality optical lens 20 of the second embodiment. Fig. 9 is a schematic diagram showing field curvature and distortion after light of wavelength 546 nm passes through the virtual reality optical lens 20 of the second embodiment. In Fig. 9, field curvature S is the field curvature in the axial direction, and T is the field curvature in the meridian direction.

[0066] As shown in Table 7, the second embodiment satisfies each of the conditional expressions.

[0067] In this embodiment, the virtual reality optical lens 20 has an entrance pupil diameter ENDP of 10,000 mm, a full field of view image height IH of 19.152 mm, and a diagonal field of view angle FOV of 94.87°. The virtual reality optical lens 20 meets the design requirements of a small volume and a maximum visual diameter of 10.00 mm or more. The three-lens optical path folding configuration increases the design freedom and provides higher performance, thereby improving the imaging quality. The on-axis and off-axis aberrations are sufficiently corrected to reduce aberrations, and the virtual reality optical lens 20 has excellent optical characteristics.

[0068] (Comparative embodiment) The comparative embodiment is basically the same as the first embodiment, and the symbols have the same meanings as in the first embodiment, so only the differences will be listed below.

[0069] FIG. 11 is a diagram showing a virtual reality optical lens 30 according to a comparative embodiment of the present invention.

[0070] Tables 5 and 6 are tables showing design data of the virtual reality optical lens 30 according to a comparative embodiment of the present invention.

[0071] JPEG2025009717000006.jpg130160

[0072] Table 6 shows the aspheric data of each lens in the virtual reality optical lens 30 according to a comparative embodiment of the present invention.

[0073] JPEG2025009717000007.jpg109158

[0074] FIG. 12 is a point sequence diagram of the virtual reality optical lens 30.

[0075] Fig. 13 is a schematic diagram showing the axial aberration and magnification aberration after light of wavelengths 470 nm, 546 nm, and 650 nm passes through the virtual reality optical lens 30 of the comparative embodiment. Fig. 12 is a schematic diagram showing the field curvature and distortion after light of wavelength 546 nm passes through the virtual reality optical lens 30 of the comparative embodiment. In Fig. 14, the field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridian direction.

[0076] Table 7 below shows the numerical values ​​corresponding to each condition in the comparative embodiment according to the above condition. It is clear that the virtual reality optical lens 30 according to the comparative embodiment does not satisfy the above condition 1.80≦nd2.

[0077] In the comparative embodiment, the virtual reality optical lens 30 has an entrance pupil diameter ENDP of 10.000 mm, a full-field image height IH of 19.152 mm, and a diagonal field of view FOV of 94.60°. The second lens 15 of the virtual reality optical lens 30 is made of a material with a refractive index of 1.713, which does not satisfy the condition 1.80≦nd2, and the aberration is significantly increased and difficult to control, and the on-axis and off-axis aberrations are not sufficiently corrected, resulting in poor optical properties.

[0078] JPEG2025009717000008.jpg75132

[0079] The above-described embodiments are specific embodiments for realizing the present invention, and it will be understood by those skilled in the art that various changes in form and details are possible in practical application without departing from the spirit and scope of the present invention.

Claims

1. 1. A virtual reality optical lens, comprising: The virtual reality optical lens includes, from the front to the rear, an image surface, the image surface having a circular polarizer attached to the rear side of the image surface for emitting light; a third lens having a partially reflective element disposed on a front surface thereof; A second lens; A first lens having a composite film on its front surface, the composite film including a polarizing reflective film and a quarter-wave sheet, the polarizing reflective film being attached to the front surface of the first lens, and the quarter-wave sheet being attached to the front side of the polarizing reflective film; a stop located behind the optical system; A virtual reality optical lens, characterized in that the maximum visual diameter of the virtual reality optical lens is VD, the refractive index of the second lens is nd2, and the maximum lens half diameter of the virtual reality optical lens is SDmax, satisfying the following relationship: 1.80≦nd2 VD≧10.00mm SDmax≦23.00mm

2. The virtual reality optical lens of claim 1 , wherein the rear surface of the first lens is aspheric.

3. 2. The virtual reality optical lens of claim 1, wherein the rear and front surfaces of the second lens are spherical, and the rear and front surfaces of the third lens are aspheric.

4. The virtual reality optical lens of claim 1 , wherein the field of view of the virtual reality optical lens is FOV, and satisfies the following relationship: 94.50°≦FOV

5. 2. The virtual reality optical lens according to claim 1, wherein the total optical length of the virtual reality optical lens is TTL and satisfies the following relationship: TTL≦19.427mm

6. The virtual reality optical lens of claim 1 , wherein the partially reflective element is a semi-transparent semi-reflective film.

7. The virtual reality optical lens of claim 6, wherein the reflectance and transmittance of the semi-transparent semi-reflective film are both 50%.

8. The virtual reality optical lens of claim 1 , wherein the reflectivity of the polarizing reflective film is ≧95%.

9. 2. The virtual reality optical lens of claim 1, wherein the optical distortion of the virtual reality optical lens is ≦28.4%.

10. The virtual reality optical lens according to claim 1, characterized in that the aberration of the virtual reality optical lens is ΔE, and satisfies |ΔE|≦57 μm.

11. 2. The virtual reality optical lens of claim 1, wherein the focal length of the virtual reality optical lens is f and the total optical length of the virtual reality optical lens is TTL, satisfying the following relationship: TTL / f≦0.79

12. The virtual reality optical lens of claim 1 , wherein the image surface is a display and is 2.1 inches in size.

Images