Human-eye-imitating lens

Abstract

The invention discloses a human-eye-imitating lens, and the lens comprises a lens group which sequentially comprises a first lens to a fourteenth lens from an optical information projection end to an image receiving end, and the first lens to the fourteenth lens are spherical lenses with focal power; the diaphragm is located at the light information projection end of the first lens; the spacing distance between the diaphragm and the first lens on the optical axis is recorded as ST, and ST is larger than or equal to 12 mm and smaller than or equal to 13 mm. The lens group of the human-eye-imitating lens comprises fourteen lenses, so that the structure of the human-eye-imitating lens is simplified, the processing complexity of the human-eye-imitating lens is reduced, the assembling procedures of the human-eye-imitating lens are reduced, and the adjustment difficulty of the human-eye-imitating lens is reduced.

Description

Technical Field

[0001] The present invention relates to the field of lens testing, and particularly to a humanoid eye-like lens. Background Art

[0002] In recent years, AR (Augmented Reality) technology has made remarkable progress. As a technology with great development potential, it has been widely applied in many fields such as entertainment, education, and medical treatment. With the in-depth application of AR technology in various industries, the market has higher and higher requirements for its related hardware devices.

[0003] As a key component for the performance testing of AR modules, the design of a humanoid eye-like lens needs to meet requirements such as high resolution, low distortion, and stable temperature drift control to ensure the stability and reliability of AR devices in different environments. Therefore, the performance and volume optimization of the humanoid eye-like lens have become important factors affecting the further development of AR technology.

[0004] Therefore, it has important practical significance and market value to design a humanoid eye-like lens that can meet the performance requirements and has a small volume. Summary of the Invention

[0005] An object of the present invention is to provide a humanoid eye-like lens, which has good stability and uniformity in imaging quality and a small overall length.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a humanoid eye-like lens, comprising: a lens group, the lens group sequentially includes a first lens to a fourteenth lens from the light information projection end to the image receiving end, wherein the first lens to the fourteenth lens are all spherical lenses with optical power; a diaphragm, the diaphragm is located at the light information projection end of the first lens; wherein, the spacing distance between the diaphragm and the first lens on the optical axis is denoted as ST, satisfying: 12 mm ≤ ST ≤ 13 mm.

[0007] As a preference, the spacing distance between the side of the light information projection end of the first lens and the imaging surface on the optical axis is denoted as TTL, and the focal length of the humanoid eye-like lens is denoted as f, satisfying: 7 ≤ TTL / f ≤ 10.

[0008] As a preference, the spacing distance between the side of the light information projection end of the first lens and the imaging surface on the optical axis is denoted as TTL, and the entrance pupil diameter of the humanoid eye-like lens is denoted as EPD, satisfying: 23 ≤ TTL / EPD ≤ 38.

[0009] As a preference, the spacing distance between the side of the image receiving end of the thirteenth lens and the imaging surface on the optical axis is denoted as the back focal length BFL, and the entrance pupil diameter of the humanoid eye-like lens is denoted as EPD, satisfying: 1.5 ≤ BFL / EPD ≤ 2.

[0010] As a preference, the entrance pupil diameter of the humanoid eye lens is denoted as EPD, satisfying: 8mm < EPD < 10mm.

[0011] As a preference, the distance between the side of the light information projection end of the first lens and the imaging surface on the optical axis is denoted as TTL, and the imaging height of the humanoid eye lens is denoted as ImgH, satisfying: TTL / ImgH ≤ 14.

[0012] As a preference, the distance between the side of the image receiving end of the thirteenth lens of the humanoid eye lens and the imaging surface on the optical axis is denoted as the back focal length BFL, the change amount of the optical back focal length BFL is denoted as ΔBFL, and for the humanoid eye lens in an ambient temperature range of 0°C to 45°C, it satisfies: ΔBFL ≤ 3μm.

[0013] As a preference, the maximum field of view angle of the humanoid eye lens is denoted as FOV, satisfying: FOV = 43°.

[0014] As a preference, the aperture value of the humanoid eye lens is denoted as Fno, satisfying: -5.5 ≤ Fno ≤ -2.

[0015] As a preference, each lens satisfies the following conditions: The first lens has a positive optical power, the side of its light information projection end is convex, and the side of its image receiving end is convex; the second lens has a negative optical power, the side of its light information projection end is concave, and the side of its image receiving end is concave; the third lens has a positive optical power, the side of its light information projection end is convex, and the side of its image receiving end is convex; the fourth lens has a positive optical power, the side of its light information projection end is convex, and the side of its image receiving end is concave; the fifth lens has a negative optical power, the side of its light information projection end is concave, and the side of its image receiving end is concave; the sixth lens has a negative optical power, the side of its light information projection end is concave, and the side of its image receiving end is convex; the seventh lens has a positive optical power, the side of its light information projection end is concave, and the side of its image receiving end is convex; the eighth lens has a positive optical power, the side of its light information projection end is convex, and the side of its image receiving end is concave; the ninth lens has a positive optical power, the side of its light information projection end is convex, and the side of its image receiving end is convex; the tenth lens has a negative optical power, the side of its light information projection end is concave, and the side of its image receiving end is concave; the eleventh lens has a positive optical power, the side of its light information projection end is convex, and the side of its image receiving end is convex; the twelfth lens has a positive optical power, the side of its light information projection end is concave, and the side of its image receiving end is convex; the thirteenth lens has a positive optical power, the side of its light information projection end is concave, and the side of its image receiving end is convex; the fourteenth lens has a positive optical power, the side of its light information projection end is convex, and the side of its image receiving end is concave.

[0016] As a preference, each of the lenses satisfies the following conditions: The first lens has a positive optical power, its light information projection end side is convex, and its image receiving end side is convex; the second lens has a negative optical power, its light information projection end side is concave, and its image receiving end side is concave; the third lens has a positive optical power, its light information projection end side is convex, and its image receiving end side is convex; the fourth lens has a positive optical power, its light information projection end side is convex, and its image receiving end side is convex; the fifth lens has a positive optical power, its light information projection end side is convex, and its image receiving end side is convex; the sixth lens has a negative optical power, its light information projection end side is concave, and its image receiving end side is concave; the seventh lens has a negative optical power, its light information projection end side is concave, and its image receiving end side is concave; the eighth lens has a positive optical power, its light information projection end side is convex, and its image receiving end side is convex; the ninth lens has a positive optical power, its light information projection end side is convex, and its image receiving end side is concave; the tenth lens has a positive optical power, its light information projection end side is convex, and its image receiving end side is convex; the eleventh lens has a positive optical power, its light information projection end side is convex, and its image receiving end side is convex; the twelfth lens has a negative optical power, its light information projection end side is concave, and its image receiving end side is concave; the thirteenth lens has a positive optical power, its light information projection end side is concave, and its image receiving end side is convex; the fourteenth lens has a positive optical power, its light information projection end side is convex, and its image receiving end side is concave.

[0017] As a preference, 20mm < f1 < 50mm; -30mm < f2 < -10mm; 20mm < f3 < 50mm; 30mm < f4 < 50mm; -50mm < f5 < -20mm; -70mm < f6 < -30mm; 50mm < f7 < 120mm; 50mm < f8 < 120mm; 30mm < f9 < 60mm; -20mm < f 10 < -10mm; 10mm < f 11 < 40mm; 25mm < f 12 < 40mm; 50mm < f 13 < 70mm; 50mm < f 14 < 70mm; where f1 to f 14 are the focal lengths of the first lens to the fourteenth lens in sequence.

[0018] As a preference, 10mm < f1 < 30mm; -30mm < f2 < -10mm; 15mm < f3 < 35mm; 50mm < f4 < 70mm; 20mm < f5 < 30mm; -10mm < f6 < 0mm; -20mm < f7 < -10mm; 15mm < f8 < 35mm; 30mm < f9 < 60mm; 15mm < f10 <35mm; 15mm < f 11 <35mm; -20mm < f 12 <0mm; 20mm < f 13 <40mm; 80mm < f 14 <100mm; where f1 to f 14 are the focal lengths of the first lens to the fourteenth lens respectively.

[0019] As a preference, the side of the image receiving end of the second lens is adhesively connected to the side of the optical information projecting end of the third lens, defining a first adhesive surface between the second lens and the third lens; the side of the image receiving end of the ninth lens is adhesively connected to the side of the optical information projecting end of the tenth lens, defining a second adhesive surface between the ninth lens and the tenth lens.

[0020] As a preference, the side of the image receiving end of the fifth lens is adhesively connected to the side of the optical information projecting end of the sixth lens, defining a third adhesive surface between the fifth lens and the sixth lens.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The lens group of the humanoid eye-like lens contains fourteen lenses, which simplifies the structure of the humanoid eye-like lens, is beneficial to reducing the processing complexity of the humanoid eye-like lens, reducing the assembly process of the humanoid eye-like lens, and reducing the adjustment difficulty of the humanoid eye-like lens.

[0022] (2) The aperture stop is located at the optical information projecting end of the first lens, which restricts the angle and intensity of the light incident on the lens group, is beneficial to reducing the scattering and loss of light, thereby improving the utilization rate of light and the projection uniformity of light on the imaging surface.

[0023] (3) The interval distance ST between the aperture stop and the first lens on the optical axis satisfies 12mm ≤ ST ≤ 13mm, which takes into account the convenience of assembling the humanoid eye-like lens in terms of spatial layout and the adaptability to the optical engine of the AR device.

[0024] (4) The interval distance TTL from the side of the optical information projecting end of the first lens to the imaging surface on the optical axis and the focal length f of the humanoid eye-like lens satisfy 7 ≤ TTL / f ≤ 10, which makes the structure of the humanoid eye-like lens more compact and is beneficial to shortening the total length of the humanoid eye-like lens. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the humanoid eye-like lens of Embodiment 1 of the present application.

[0026] Figure 2 is the distortion curve of the humanoid eye-like lens of Embodiment 1 of the present application.

[0027] Figure 3Relative illuminance curve of the humanoid eye lens in Embodiment 1 of the present application.

[0028] Figure 4 Astigmatism curve of the humanoid eye lens in Embodiment 1 of the present application.

[0029] Figure 5 Axial chromatic aberration curve of the humanoid eye lens in Embodiment 1 of the present application.

[0030] Figure 6 MTF curve of the humanoid eye lens in Embodiment 1 of the present application.

[0031] Figure 7 Structural schematic diagram of the humanoid eye lens in Embodiment 2 of the present application.

[0032] Figure 8 Distortion curve of the humanoid eye lens in Embodiment 2 of the present application.

[0033] Figure 9 Relative illuminance curve of the humanoid eye lens in Embodiment 2 of the present application.

[0034] Figure 10 Astigmatism curve of the humanoid eye lens in Embodiment 2 of the present application.

[0035] Figure 11 Axial chromatic aberration curve of the humanoid eye lens in Embodiment 2 of the present application.

[0036] Figure 12 MTF curve of the humanoid eye lens in Embodiment 2 of the present application.

[0037] In the figure: STO, aperture; E1, the first lens; S2, the side of the light information projection end of the first lens; S3, the side of the image receiving end of the first lens; E2, the second lens; S4, the side of the light information projection end of the second lens; S5, the side of the image receiving end of the second lens; E3, the third lens; S6, the side of the light information projection end of the third lens; S7, the side of the image receiving end of the third lens; E4, the fourth lens; S8, the side of the light information projection end of the fourth lens; S9, the side of the image receiving end of the fourth lens; E5, the fifth lens; S10, the side of the light information projection end of the fifth lens; S11, the side of the image receiving end of the fifth lens; E6, the sixth lens; S12, the side of the light information projection end of the sixth lens; S13, the side of the image receiving end of the sixth lens; E7, the seventh lens; S14, the side of the light information projection end of the seventh lens; S15, the side of the image receiving end of the seventh lens; E8, the eighth lens; S16, the side of the light information projection end of the eighth lens; S17, the side of the image receiving end of the eighth lens; E9, the ninth lens; S18, the side of the light information projection end of the ninth lens; S19, the side of the image receiving end of the ninth lens; E10, the tenth lens; S20, the side of the light information projection end of the tenth lens; S21, the side of the image receiving end of the tenth lens; E11, the eleventh lens; S22, the side of the light information projection end of the eleventh lens; S23, the side of the image receiving end of the eleventh lens; E12, the twelfth lens; S24, the side of the light information projection end of the twelfth lens; S25, the side of the image receiving end of the twelfth lens; E13, the thirteenth lens; S26, the side of the light information projection end of the thirteenth lens; S27, the side of the image receiving end of the thirteenth lens; E14, the fourteenth lens; S28, the side of the light information projection end of the fourteenth lens; S29, the side of the image receiving end of the fourteenth lens; E15, the fifteenth lens; S30, the side of the light information projection end of the fifteenth lens; S31, the side of the image receiving end of the fifteenth lens. Detailed implementation manners

[0038] Next, in combination with the detailed implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, any combination of the following described embodiments or technical features can form a new embodiment.

[0039] An artificial eye lens, as Figure 1 and Figure 7 shown, includes a lens group and an aperture STO. The lens group sequentially includes the first lens E1 to the fourteenth lens E14 from the light information projection end to the image receiving end. Among them, the first lens E1 to the fourteenth lens E14 are all spherical lenses with optical power; the aperture STO is located at the light information projection end of the first lens E1; wherein, the distance between the aperture STO and the first lens E1 on the optical axis is denoted as ST, and it satisfies: 12 mm ≤ ST ≤ 13 mm.

[0040] It should be understood that the lens group of the humanoid eye lens includes fourteen lenses. Compared with the humanoid eye lens in the related art, the humanoid eye lens of the present application has fewer lenses, thereby simplifying the structure of the humanoid eye lens, which is beneficial to reducing the processing complexity of the humanoid eye lens, reducing the assembly process of the humanoid eye lens, and reducing the adjustment difficulty of the humanoid eye lens. It is worth mentioning that during the use of the humanoid eye lens, the smaller number of lenses is also beneficial to reducing the risk of failure caused by the interaction between the lenses, thus facilitating the long-term and stable use of the humanoid eye lens in the AR device test, reducing the replacement frequency of the humanoid eye lens, and reducing the maintenance cost of the humanoid eye lens.

[0041] Furthermore, the aperture STO is located at the light information projection end of the first lens E1, which can limit the angle and intensity of the light incident on the lens group, is beneficial to reducing the scattering and loss of light, thereby improving the utilization rate of light, as well as enhancing the projection uniformity of light on the imaging surface, and further being able to support the imaging quality of the humanoid eye lens.

[0042] It should be understood that in actual tests, by placing the aperture STO in front, it is beneficial to reducing the influence of the exit pupil position or light variation of the optical engine of the AR device on the final imaging quality, and further improving the accuracy of detecting the image brightness, chromaticity, and contrast of the AR device, providing a reliable basis for the research and development and quality control of the AR device.

[0043] In addition, placing the aperture STO in front can make the entrance pupil of the humanoid eye lens coincide with or approach the position of the human eye entrance pupil when the human eye is viewing, thereby simulating the human eye entrance pupil, enabling the measurement system with the humanoid eye lens to measure the optical engine of the AR device under the same conditions as a human observer, and further being beneficial to collecting the complete field of view to conduct a more comprehensive test on the display performance of the AR device, which can make the visual effect of the AR device closer to the actual needs, provide a basis for the quality control of the AR device, and improve the user experience when using the AR device.

[0044] Further, the distance ST between the aperture STO and the first lens E1 on the optical axis satisfies 12 mm ≤ ST ≤ 13 mm, which can balance the convenience of assembling the humanoid eye lens in terms of spatial layout and the adaptability to the optical engine of the AR device. It should be understood that when ST satisfies 12 mm ≤ ST ≤ 13 mm, it is beneficial to avoid too small a distance between the aperture STO and the first lens E1, which can reduce the assembly difficulty of the aperture STO and the risk of bumping and damage during the assembly of the aperture STO and the first lens E1. At the same time, when ST satisfies 12 mm ≤ ST ≤ 13 mm, it is possible to reduce the light blocking of the aperture STO and avoid the problem of uneven light caused by the aperture STO, thereby improving the light utilization rate and the projection uniformity, and making the imaging quality of the humanoid eye lens have better stability and uniformity. In addition, when ST satisfies 12 mm ≤ ST ≤ 13 mm, it is beneficial to adapt to the exit pupils of various optical engines, thereby expanding the applicable range of the humanoid eye lens. In actual applications, it can provide convenience for the testing of AR devices.

[0045] In some embodiments, the distance on the optical axis from the side S2 of the light information projection end of the first lens to the imaging surface is denoted as TTL, and the focal length of the humanoid eye lens is denoted as f, satisfying: 7 ≤ TTL / f ≤ 10, which is beneficial to reasonably control the propagation path of light. While ensuring the imaging quality, it makes the structure of the humanoid eye lens more compact, beneficial to shortening the total length of the humanoid eye lens, and realizing the miniaturization and light weight of the humanoid eye lens.

[0046] In some embodiments, the distance on the optical axis from the side S2 of the light information projection end of the first lens to the imaging surface is denoted as TTL, and the entrance pupil diameter of the humanoid eye lens is denoted as EPD, satisfying: 23 ≤ TTL / EPD ≤ 38. On the basis of making the structure of the humanoid eye lens more compact and the total length shorter, it enables the humanoid eye lens to have a larger aperture, thereby increasing the light input of the humanoid eye lens and enhancing the imaging ability in low-light environments. In addition, the smaller TTL can reduce the sensitivity of the assembly tolerance between lenses, thereby enhancing the mechanical stability of the humanoid eye lens and reducing the manufacturing difficulty and calibration difficulty of the humanoid eye lens.

[0047] In some embodiments, the distance on the optical axis from the side S2 of the light information projection end of the first lens to the imaging surface is denoted as TTL, and the imaging height of the humanoid eye lens is denoted as ImgH, satisfying: TTL / ImgH ≤ 14. On the basis of making the structure of the humanoid eye lens more compact and the total length shorter, it enables the humanoid eye lens to have a larger imaging area, to cover a wider field of view and improve the pixel resolution ability. In addition, the larger imaging height ImgH can provide a more uniform image plane resolution distribution, thereby being beneficial to avoiding waste caused by insufficient resolution of edge pixels.

[0048] In some embodiments, the distance between the side surface S27 of the image receiving end of the thirteenth lens and the imaging surface on the optical axis is denoted as the back focal length BFL of the humanoid eye lens, and the entrance pupil diameter of the humanoid eye lens is denoted as EPD, satisfying 1.5 ≤ BFL / EPD ≤ 2. On the basis of making the humanoid eye lens have a larger aperture, the back focal length BFL of the humanoid eye lens is reduced, so that the structure of the humanoid eye lens is more compact, which is conducive to realizing the miniaturization and light weight of the humanoid eye lens.

[0049] It is worth mentioning that if BFL / EPD < 1.5, that is, the back focal length BFL is too short, it may increase the sensitivity of the assembly tolerance between the lens group and the imaging surface; if BFL / EPD > 2, that is, the back focal length BFL is too long, it may cause a decrease in the mechanical stability of the humanoid eye lens. In this application, by satisfying 1.5 ≤ BFL / EPD ≤ 2, the optical power of the lens group is reasonably distributed, which is beneficial to avoiding defects such as astigmatism and field curvature caused by too short back focal length BFL, can improve the edge image quality of the imaging of the humanoid eye lens, and can improve the mechanical stability of the humanoid eye lens. In other words, by satisfying 1.5 ≤ BFL / EPD ≤ 2, the humanoid eye lens has a larger aperture while shortening the back focal length BFL, so that better imaging brightness can still be obtained under low light conditions.

[0050] In some embodiments, the entrance pupil diameter of the humanoid eye lens is denoted as EPD, satisfying 8mm < EPD < 10mm, which can increase the light input amount of the humanoid eye lens, thereby enhancing the imaging ability of the humanoid eye lens in low light environments and improving the imaging quality.

[0051] In some embodiments, the distance between the side surface S27 of the image receiving end of the thirteenth lens of the humanoid eye lens and the imaging surface on the optical axis is denoted as the back focal length BFL of the optical system, and the change amount of the back focal length BFL is denoted as ΔBFL. The humanoid eye lens satisfies ΔBFL ≤ 3μm in an environmental temperature range of 0°C to 45°C to reduce the influence of temperature drift on the imaging quality of the humanoid eye lens. It should be understood that in an optical system, the virtual image distance is closely related to the back focal length BFL. Even a slight change in the back focal length BFL will have a greater impact on the virtual image distance. Therefore, the stability of the back focal length BFL is crucial for ensuring the accuracy of the virtual image distance. The humanoid eye lens of this application has a temperature drift of the back focal length BFL less than 3μm in the temperature range of 0°C to 45°C, which can reduce the influence of the temperature drift of the back focal length BFL on the imaging quality of the humanoid eye lens, thereby improving the data reliability when the humanoid eye lens tests an AR device, and is beneficial to avoiding errors and product misjudgments in the AR device test caused by temperature changes. In this way, the R & D cost of the AR device can be reduced and the R & D cycle can be shortened.

[0052] In at least one embodiment, simulation software, such as CODEV software, is used to select the material of the lens so that the lens has a stable refractive index, can maintain the stability of the light propagation path when the ambient temperature fluctuates, and has good thermal conductivity, enabling the internal temperature of the humanoid eye lens to be balanced more quickly, reducing the optical performance changes caused by local temperature differences, and thus reducing the impact of temperature drift on the imaging quality of the humanoid eye lens.

[0053] In at least one embodiment, the humanoid eye lens adopts a thermal compensation and optical balance design. Specifically, special optical materials cause the lens to expand or contract when the ambient temperature changes, and the flexible connection structure in the humanoid eye lens causes the lens to produce a small displacement to adjust the positional relationship between the lenses, thereby compensating for the optical parameter fluctuations caused by the thermal expansion and contraction of the lens, and further making the structure of the humanoid eye lens more stable, capable of maintaining stable imaging quality in AR device tests at different temperatures, and improving the data reliability of the tests.

[0054] In some embodiments, the maximum field of view angle of the humanoid eye lens is denoted as FOV, satisfying: FOV = 43°, which is beneficial to reducing distortion, thereby reducing the interference of the image distortion generated by the humanoid eye lens on the test results of the AR device, and thus enabling more accurate evaluation of the performance of the AR device such as image superposition accuracy and scene rendering authenticity. In addition, satisfying FOV = 43° also improves the angular resolution of the humanoid eye lens, and thus more reliably reflects the performance of the AR device in complex scenarios, which is beneficial to improving the accuracy and effectiveness of the test.

[0055] In some embodiments, the aperture value of the humanoid eye lens is denoted as Fno, satisfying: -5.5 ≤ Fno ≤ -2, thereby generating negative spherical aberration to expand the depth of field range of the humanoid eye lens, enabling the humanoid eye lens to clearly image the display content at different distances of the AR device; in addition, it is also beneficial to simulate the pupil adjustment characteristics of the human eye in the light and dark adaptation state, making the test structure more conform to the actual use scenario of the AR device.

[0056] The following are two specific embodiments of the humanoid eye lens.

[0057] Embodiment 1:

[0058] As Figure 1As shown, the first lens E1 has a positive optical power. The side surface S2 of the light information projection end of the first lens is convex, and the side surface S3 of the image receiving end of the first lens is convex. The focal length range of the first lens E1 is 20mm < f1 < 50mm. It should be understood that the first lens E1 plays a role in initially converging light and adjusting the incident angle of light. Its positive optical power range of 20mm < f1 < 50mm is conducive to collecting incident light in a larger angular range, creating favorable conditions for subsequent imaging. Moreover, it is conducive to making the light entering the humanoid eye lens propagate along a preset optical path, thereby effectively capturing and initially focusing the light with different field angles.

[0059] The second lens E2 has a negative optical power. The side surface S4 of the light information projection end of the second lens is concave, and the side surface S5 of the image receiving end of the second lens is concave. The focal length range of the second lens E2 is -30mm < f2 < -10mm. It should be understood that the second lens E2 plays a role in diverging light. Through the synergistic effect of the second lens E2 and the first lens E1, the divergence degree of light can be adjusted, and the propagation direction of light can be controlled, enabling the light to meet the imaging requirements of the subsequent lens. It is worth mentioning that the negative optical power range of the second lens E2 is -30mm < f2 < -10mm, which is conducive to balancing aberrations such as spherical aberration and coma generated during the propagation of light, thereby improving the clarity and accuracy of the imaging of the humanoid eye lens. Especially in the edge region of the field of view, it is beneficial to reduce the influence of aberrations on the imaging quality.

[0060] The third lens E3 has a positive optical power. The side surface S6 of the light information projection end of the third lens is convex, and the side surface S7 of the image receiving end of the third lens is convex. The focal length range of the third lens E3 is 20mm < f3 < 50mm. It should be understood that the third lens E3 provides the main optical power. That is to say, through the synergistic effect of the third lens E3 and the first lens E1 with positive optical power, the second lens E2 with relatively weak negative optical power, and the fourth lens E4, the receiving angle range of the incident light by the humanoid eye lens can be increased, and the outgoing light angle corresponding to the central light of the humanoid eye lens can be reduced, thereby improving the utilization rate of light, enabling more light to be more accurately focused on the imaging surface, and further increasing the light flux passing through the humanoid eye lens. In this way, sufficient light information can be obtained from the AR device during the test, and the imaging performance of the AR device can be evaluated more accurately.

[0061] Among them, the side S5 of the second lens image receiving end is adhesively connected to the side S6 of the third lens light information projecting end, defining a first adhesive surface between the second lens E2 and the third lens E3. That is to say, the second lens E2 and the third lens E3 form a doublet lens, which is beneficial to correcting chromatic aberration, making the focusing of the humanoid eye lens on different colors of light more accurate. When testing the image color restoration degree of the AR device, it is beneficial to make the color of the imaging surface more natural and accurate; in addition, it can also balance aberrations such as spherical aberration and coma, enabling the humanoid eye lens to clearly image at a large field of view and the image shape to be undistorted. At the same time, it can optimize the light propagation path and improve the light utilization rate.

[0062] The fourth lens E4 has a positive optical power. The side S8 of the fourth lens light information projecting end is a convex surface, and the side S9 of the fourth lens image receiving end is a concave surface. The range of the positive optical power of the fourth lens E4 is 30mm < f4 < 50mm. It should be understood that the fourth lens E4 plays a role in further adjusting the light angle and focusing the light. Through the synergistic effect of the fourth lens E4 and other lenses, the refraction and propagation direction of the light can be more precisely controlled, enabling the light to be more accurately focused on the imaging surface; in addition, it is also beneficial to balance aberrations and reduce aberrations such as spherical aberration and coma of the humanoid eye lens, thereby improving the clarity and resolution of the imaging, enabling the humanoid eye lens to obtain high-quality imaging at different field of view angles.

[0063] The fifth lens E5 has a negative optical power. The side S10 of the fifth lens light information projecting end is a concave surface, and the side S11 of the fifth lens image receiving end is a concave surface. The focal length range of the fifth lens E5 is -50mm < f5 < -20mm. It should be understood that the fifth lens E5 plays a role in further diverging and adjusting the light, enabling the divergence degree and propagation direction of the light to be controlled, thereby optimizing the light propagation path. Through the synergistic effect of the fifth lens E5 and other lenses, aberrations can be corrected, making the propagation of light in the humanoid eye lens more uniform and stable, thereby improving the imaging quality. Especially when testing the complex light scene or large field of view imaging of the AR device, the fifth lens E5 is beneficial to improving the accuracy and clarity of the humanoid eye lens imaging.

[0064] The sixth lens E6 has a negative optical power. The side S12 of the light information projection end of the sixth lens is concave, and the side S13 of the image receiving end of the sixth lens is convex. The focal length range of the sixth lens E6 is -70mm < f6 < -30mm. It should be understood that the sixth lens E6 plays a role in finely adjusting the light, enabling the control of the divergence degree and propagation direction of the light. Through the synergistic effect of the sixth lens E6 and other lenses, the light distribution can be further optimized, the loss of light during propagation can be reduced, and the utilization rate of light can be improved. In addition, it is also possible to compensate for and correct aberrations such as spherical aberration and coma, thereby improving the clarity and accuracy of imaging. Especially in the edge region of the field of view, the imaging quality can be improved, making the imaging effect within the entire field of view more uniform and consistent.

[0065] The seventh lens E7 has a positive optical power. The side S14 of the light information projection end of the seventh lens is concave, and the side S15 of the image receiving end of the seventh lens is convex. The focal length range of the seventh lens E7 is 50mm < f7 < 120mm. It should be understood that the seventh lens E7 plays a role in converging the light and adjusting the light angle. With the focal length range of the seventh lens E7 being 50mm < f7 < 120mm, the light can be focused to a suitable position, providing a better basis for the imaging of subsequent lenses. Through the synergistic effect of the seventh lens E7 and other lenses, it is beneficial to improve the resolution of the humanoid eye lens and enhance the image contrast, thereby improving the imaging quality. In this way, when testing the AR device, the humanoid eye lens can present the image details more clearly.

[0066] The eighth lens E8 has a positive optical power. The side S16 of the light information projection end of the eighth lens is convex, and the side S17 of the image receiving end of the eighth lens is concave. The focal length range of the eighth lens E8 is 50mm < f8 < 120mm. It should be understood that the eighth lens E8 plays an effect of converging the light and adjusting the light angle. Through the synergistic effect of the seventh lens E7 and the eighth lens E8, the focusing effect of the light can be further optimized, and then the light can be focused more accurately on the imaging plane. Through the synergistic effect of the eighth lens E8 and other lenses, it is also possible to correct aberrations such as spherical aberration and coma of the humanoid eye lens, enabling the humanoid eye lens to obtain high-quality and stable imaging at different field angles.

[0067] The ninth lens E9 has a positive optical power. The light information projection end side S18 of the ninth lens is a convex surface, and the image receiving end side S19 of the ninth lens is a convex surface. The focal length range of the ninth lens E9 is 30mm < f9 < 60mm. It should be understood that the ninth lens E9 plays the role of converging light and adjusting the light angle, so as to further optimize the light focusing effect, so that the light can be more accurately focused on the imaging surface. Through the synergistic effect of the ninth lens E9 and other lenses, the propagation path of the light can be more precisely controlled, making the propagation of the light in the humanoid eye lens more stable and uniform.

[0068] The tenth lens E10 has a negative optical power. The light information projection end side S20 of the tenth lens is a concave surface, and the image receiving end side S21 of the tenth lens is a concave surface. The focal length range of the tenth lens E10 is -20mm < f 10 < -10mm. It should be understood that the tenth lens E10 plays the role of diverging and adjusting the angle of the light. Through the synergistic effect of the tenth lens E10 and other lenses, the propagation path of the light can be optimized, so that the distribution of the light in the humanoid eye lens is more reasonable, thereby improving the clarity and accuracy of imaging.

[0069] Among them, the image receiving end side S19 of the ninth lens is adhesively connected to the light information projection end side S20 of the tenth lens, defining a second cemented surface between the ninth lens E9 and the tenth lens E10. That is to say, the ninth lens E9 and the tenth lens E10 form a doublet lens to jointly balance aberrations such as spherical aberration and coma, and can also correct chromatic aberration, thereby improving the color accuracy of the humanoid eye lens, making the color on the imaging surface more real and natural, so as to improve the accuracy of the color reproduction test of the humanoid eye lens for AR devices. Especially when testing the complex light scene or large field of view imaging of AR devices, the imaging quality can be further improved through the doublet lens structure.

[0070] The eleventh lens E11 has a positive optical power. The light information projection end side S22 of the eleventh lens is a convex surface, and the image receiving end side S23 of the eleventh lens is a convex surface. The focal length range of the eleventh lens E11 is 10mm < f 11 < 40mm. It should be understood that the eleventh lens E11 plays the role of converging light and adjusting the light angle, making the light more precisely focused on the imaging surface, thereby improving the clarity and accuracy of imaging. Through the synergistic effect of the eleventh lens E11 and the first lens E1 to the tenth lens E10, the light can be finely adjusted, so as to optimize the propagation path of the light and improve the utilization rate of the light. Through the mutual cooperation of the eleventh lens E11 and other lenses, it can play a role in compensating and correcting aberrations such as spherical aberration and coma, and then make the entire field of view have a high imaging quality, so that the humanoid eye lens can test the consistency of the imaging quality of different field of view angles of AR devices.

[0071] The twelfth lens E12 has a positive optical power. The light information projection end side S24 of the twelfth lens is concave, and the image receiving end side S25 of the twelfth lens is convex. The focal length range of the twelfth lens E12 is 25 mm < f 12 < 40 mm. It should be understood that the twelfth lens E12 plays a role in converging light and adjusting the light angle. Through the cooperative effect of the twelfth lens E12 and other lenses, the clarity and contrast of the image are improved, thereby improving the imaging quality.

[0072] The thirteenth lens E13 has a positive optical power. The light information projection end side S26 of the thirteenth lens is concave, and the image receiving end side S27 of the thirteenth lens is convex. The focal length range of the thirteenth lens E13 is 50 mm < f 13 < 70 mm. It should be understood that the thirteenth lens E13 plays a role in converging light and adjusting the light angle, so as to correct aberration and balance chromatic aberration. Through the cooperative effect of the thirteenth lens E13 and other lenses, the color accuracy of the humanoid eye lens imaging is improved, making the image color more real and natural. In addition, the thirteenth lens E13 is also beneficial to improving the overall stability and reliability of the humanoid eye lens. Furthermore, the humanoid eye lens can maintain good imaging performance during long-term use.

[0073] Among them, the twelfth lens E12 and the thirteenth lens E13 are combined lenses. By gluing or setting at a specific interval, the aberration can be further corrected, and the stability and accuracy of the humanoid eye lens imaging are improved. Furthermore, it is beneficial to obtain reliable test results in different test environments.

[0074] The fourteenth lens E14 has a positive optical power. The light information projection end side S28 of the fourteenth lens is convex, and the image receiving end side of the fourteenth lens is S29 concave. The focal length range of the fourteenth lens S14 is 50 mm < f 14 < 70 mm. It should be understood that the fourteenth lens E14 plays a role in converging light and adjusting the light angle in the final stage of light propagation, so that the light is more precisely focused on the imaging surface, thereby improving the clarity and resolution of the imaging. Through the cooperative effect of the fourteenth lens E14 and other lenses, the light propagation path can be optimized, the light utilization rate can be improved, and the aberration such as spherical aberration and coma can be compensated and corrected, so that the entire field of view of the humanoid eye lens has a high quality, providing a reliable optical basis for accurately evaluating the performance of the AR device.

[0075] The fifteenth lens E15 is a planar glass, that is, both the light information projection end side S30 and the image receiving end side S31 of the fifteenth lens are planes. The fifteenth lens E15 is located between the fourteenth lens E14 and the imaging surface, which can play a role in protecting the imaging surface, helping to avoid the influence of dust particles and water stains on the imaging surface, and at the same time enabling light to pass through the fifteenth lens E15 smoothly to reach the imaging surface, reducing the influence of the external environment on the imaging surface and imaging quality.

[0076] It is worth mentioning that the fifteenth lens E15 can adopt an optical material with high transparency and low reflectivity, so that the fifteenth lens E15 can maintain good optical performance under various light conditions, provide stable and reliable protection for the lens group and the imaging surface, thereby extending the service life of the humanoid eye-like lens, helping to ensure the stability and reliability during the test, and at the same time reducing the test cost.

[0077] In this embodiment, the focal length f of the humanoid eye-like lens is -41 mm, the aperture value F is -5.1, and the maximum field of view FOV is 43°; the total length of the humanoid eye-like lens is 325 mm. Table 1 is the basic parameter table of the humanoid eye-like lens in Embodiment 1.

[0078] Table 1 Basic parameter table of the humanoid eye-like lens in Embodiment 1

[0079] Figure 2 shows the distortion curve of the humanoid eye-like lens in Embodiment 1, which represents the distortion magnitude values corresponding to different field angles. From Figure 2 it can be seen that the maximum distortion of the imaging of the humanoid eye-like lens in this embodiment is less than 2%, which can more truly simulate the human eye visual effect, and then improve the reliability of the test results of the AR device.

[0080] Figure 3 shows the relative illumination curve of the humanoid eye-like lens in Embodiment 1. From Figure 3 it can be seen that the relative illumination curve remains at a high level at different image heights, which indicates that the light transmittance of the full field of view is high and the imaging brightness is uniform. That is to say, the humanoid eye-like lens in this embodiment has a high light utilization rate, and then provides stable and uniform illumination for the test of the AR device, so that the imaging performance of the AR device can be evaluated more accurately.

[0081] Figure 4 shows the astigmatism curve of the humanoid eye-like lens in Embodiment 1, which represents the meridional image plane curvature and the sagittal image plane curvature. From Figure 4It can be seen that the astigmatism curve fluctuates little in each field region, indicating good astigmatism control ability. It should be understood that astigmatism can cause inconsistent focusing in different directions of imaging, leading to blurred and distorted images. However, through the design of the lens group, the humanoid eye lens in this embodiment can reduce astigmatism, so that image details can be clearly presented during the test of the AR device, providing a more accurate basis for evaluating the imaging performance of the AR device.

[0082] Figure 5 Fig. shows the axial chromatic aberration curve of the humanoid eye lens of Embodiment 1. From Figure 5 it can be seen that the relative image height ratio of light rays with different wavelengths in the axial direction has little difference, indicating good chromatic aberration correction ability. It should be understood that chromatic aberration can cause defects such as colored edges and color distortion in images. However, through the design of the lens group and material selection in this embodiment, the chromatic aberration can be well corrected to restore the image color, providing more reliable support for evaluating the color performance of the AR device.

[0083] Figure 6 Fig. shows the MTF (Modulation Transfer Function) curve of the humanoid eye lens of Embodiment 1. From Figure 6 it can be seen that at a spatial frequency of 80 lp / mm, the MTF value is approximately 0.60; at a spatial frequency of 140 lp / mm, the MTF value is approximately 0.35, indicating good resolution. It should be understood that the MTF value reflects the ability to resolve details. The higher the MTF value, the clearer the imaging. That is to say, the humanoid eye lens in this embodiment can present the image details of the AR device more clearly, thereby improving the accuracy of evaluating the imaging clarity of the AR device.

[0084] Embodiment 2: As Figure 7 shown, the first lens E1 has a positive optical power. The side S2 of the light information projection end of the first lens is a convex surface, and the side S3 of the image receiving end of the first lens is a convex surface. The focal length range of the first lens E1 is 10 mm < f1 < 30 mm. It should be understood that the first lens E1 plays a role in initially converging light rays and adjusting the incident angle of light rays, which is beneficial to making the light rays entering the lens system propagate along the preset optical path, so as to effectively capture and initially focus the light rays with different field angles.

[0085] The second lens E2 has a negative focal power. The light information projection end side S4 of the second lens is concave, the image receiving end side S5 of the second lens is concave, and the focal length range of the second lens E2 is -30mm < f2 < -10mm. It should be understood that the second lens E2 serves to diverge light. Through the synergistic effect of the second lens E2 and the first lens E1, the divergence degree of the light is adjusted, the propagation direction of the light is controlled, so that the light meets the imaging requirements of the subsequent lenses. It is worth mentioning that the negative focal power range of the second lens E2 is -30mm < f2 < -10mm, which is beneficial to balancing aberrations such as spherical aberration and coma generated during the propagation of light, thereby facilitating the improvement of the imaging clarity and accuracy of the humanoid eye lens. Especially in the marginal area of the field of view, it is beneficial to reduce the influence of aberrations on the imaging quality.

[0086] The third lens E3 has a positive focal power. The light information projection end side S6 of the third lens is convex, the image receiving end side S7 of the third lens is convex, and the focal length range of the third lens E3 is 15mm < f3 < 35mm. It should be understood that the third lens E3 provides the main focal power. That is to say, through the synergistic effect of the third lens E3 and the first lens E1 with positive focal power, the second lens E2 with relatively weak negative focal power, and the fourth lens E4, the receiving angle range of the incident light by the humanoid eye lens is increased, and the outgoing light angle corresponding to the central light of the humanoid eye lens is reduced, thereby improving the utilization rate of light, enabling more light to be focused on the imaging surface more accurately, and further increasing the light flux passing through the humanoid eye lens. In this way, sufficient light information can be obtained from the AR device during the test, and the imaging performance of the AR device can be evaluated more accurately.

[0087] Among them, the image receiving end side S5 of the second lens is adhesively connected to the light information projection end side S6 of the third lens, defining a first adhesive surface between the second lens E2 and the third lens E3. That is to say, the second lens E2 and the third lens E3 form a doublet lens, which is beneficial to correcting chromatic aberration, making the focusing of different color lights by the humanoid eye lens more accurate, and also balancing aberrations such as spherical aberration and coma, enabling the humanoid eye lens to clearly image and the image shape to be distortion-free under a large field of view angle. At the same time, it is beneficial to optimizing the light propagation path and improving the light utilization rate.

[0088] The fourth lens E4 has a positive optical power. The side S8 of the light information projection end of the fourth lens is a convex surface, and the side S9 of the image receiving end of the fourth lens is a convex surface. The focal length range of the fourth lens E4 is 50mm < f4 < 70mm. It should be understood that the fourth lens E4 plays a role in adjusting the light angle and focusing the light. Through the synergistic effect of the fourth lens E4 and other lenses, the refraction and propagation direction of the light can be controlled more precisely, so that the light can be focused more accurately on the imaging surface. In addition, it is also beneficial to balance aberrations, reduce aberrations such as spherical aberration and coma of the humanoid eye lens, and then improve the clarity and resolution of the imaging, so that the humanoid eye lens can obtain high-quality imaging at different field angles.

[0089] The fifth lens E5 has a positive optical power. The side S10 of the light information projection end of the fifth lens is a convex surface, and the side S11 of the image receiving end of the fifth lens is a convex surface. The focal length range of the fifth lens E5 is 20mm < f5 < 30mm. It should be understood that the fourth lens E4 plays a role in further focusing the light and adjusting the light angle. Through the synergistic effect of the fifth lens E5 and other lenses, the refraction and propagation direction of the light can be controlled more precisely, so that the light can be focused more accurately on the imaging surface. In addition, it is also beneficial to balance aberrations, reduce aberrations such as spherical aberration and coma of the humanoid eye lens, and then improve the clarity and resolution of the imaging.

[0090] The sixth lens E6 has a negative optical power. The side S12 of the light information projection end of the sixth lens is a concave surface, and the side S13 of the image receiving end of the sixth lens is a concave surface. The focal length range of the sixth lens E6 is -10mm < f6 < 0mm. It should be understood that the sixth lens E6 plays a role in fine-tuning the light, enabling the control of the divergence degree and propagation direction of the light. Through the synergistic effect of the sixth lens E6 and other lenses, the light distribution can be further optimized, the loss of light during propagation can be reduced, and the utilization rate of light can be improved. In addition, it is also possible to compensate and correct aberrations such as spherical aberration and coma, thereby improving the clarity and accuracy of the imaging. Especially in the peripheral region of the field of view, the imaging quality can be improved, making the imaging effect more uniform and consistent throughout the field of view.

[0091] Among them, the side S11 of the image receiving end of the fifth lens is adhesively connected to the side S12 of the light information projection end of the sixth lens, defining the third cemented surface between the fifth lens E5 and the sixth lens E6. That is to say, the fifth lens E5 and the sixth lens E6 form a doublet lens, which is beneficial to correcting chromatic aberration, making the humanoid eye lens focus different color lights more accurately, and can also jointly balance aberrations such as spherical aberration and coma.

[0092] The seventh lens E7 has a negative optical power. The side S14 at the light information projection end of the seventh lens is concave, and the side S15 at the image receiving end of the seventh lens is concave. The focal length range of the seventh lens E7 is -20 mm < f7 < -10 mm. It should be understood that the seventh lens E7 can further adjust the divergence degree of light rays and control the propagation direction of light rays so that the light rays can meet the imaging requirements of subsequent lenses.

[0093] The eighth lens E8 has a positive optical power. The side S16 at the light information projection end of the eighth lens is convex, and the side S17 at the image receiving end of the eighth lens is convex. The focal length range of the eighth lens E8 is 15 mm < f8 < 35 mm. It should be understood that the eighth lens E8 has the effect of converging light rays and adjusting the angle of light rays. Through the cooperation of the eighth lens E8 and other lenses, it is also possible to correct aberrations such as spherical aberration and coma of the humanoid eye lens, so that the humanoid eye lens can obtain high-quality and stable imaging at different field angles.

[0094] The ninth lens E9 has a positive optical power. The side S18 at the light information projection end of the ninth lens is convex, and the side S19 at the image receiving end of the ninth lens is concave. The focal length range of the ninth lens E9 is 30 mm < f9 < 60 mm. It should be understood that the ninth lens E9 has the effect of converging light rays and adjusting the angle of light rays, and can further optimize the focusing effect of light rays, so that the light rays can be focused more accurately on the imaging surface. Through the cooperation of the ninth lens E9 and other lenses, it is possible to more precisely control the propagation path of light rays, making the propagation of light rays in the humanoid eye lens more stable and uniform.

[0095] The tenth lens E10 has a positive optical power. The side S20 at the light information projection end of the tenth lens is convex, and the side S21 at the image receiving end of the tenth lens is convex. The focal length range of the tenth lens E10 is 15 mm < f 10 < 35 mm. It should be understood that the tenth lens E10 plays a role in further focusing light rays and adjusting the angle of light rays. Through the cooperation of the tenth lens E10 and other lenses, it is possible to more precisely control the refraction and propagation direction of light rays, so that the light rays can be focused more accurately on the imaging surface.

[0096] Among them, the side S19 at the image receiving end of the ninth lens is adhesively connected to the side S20 at the light information projection end of the tenth lens, defining a second adhesive surface between the ninth lens E9 and the tenth lens E10. That is to say, the ninth lens E9 and the tenth lens E10 form a doublet lens to jointly balance aberrations such as spherical aberration and coma.

[0097] The eleventh lens E11 has a positive optical power. The side S22 at the light information projection end of the eleventh lens is convex, and the side S23 at the image receiving end of the eleventh lens is convex. The focal length range of the eleventh lens E11 is 15 mm < f 11<35 mm. It should be understood that the eleventh lens E11 functions to converge light and adjust the light angle, enabling the light to be more precisely focused on the imaging surface, thereby improving the clarity and accuracy of imaging. Through the synergistic effect of the eleventh lens E11 and the first lens E1 to the tenth lens E10, fine adjustment of the light can be achieved, thus optimizing the light propagation path and improving the light utilization rate. Through the mutual cooperation of the eleventh lens E11 and other lenses, spherical aberration, coma aberration and other aberrations can be compensated and corrected, so that a high imaging quality is achieved throughout the field of view, enabling the humanoid eye lens to test the consistency of the imaging quality of different field of view angles of the AR device.

[0098] The twelfth lens E12 has a negative optical power. The light information projection end side S24 of the twelfth lens is concave, the image receiving end side S25 of the twelfth lens is concave, and the focal length range of the twelfth lens E12 is -20 mm < f 12 <0 mm. It should be understood that the twelfth lens E12 functions to finely adjust the light, enabling control of the divergence degree and propagation direction of the light. Through the synergistic effect of the twelfth lens E12 and other lenses, the light distribution can be further optimized, reducing the loss of light during propagation and improving the light utilization rate The thirteenth lens E13 has a positive optical power. The light information projection end side S26 of the thirteenth lens is concave, the image receiving end side S27 of the thirteenth lens is convex, and the focal length range of the thirteenth lens E13 is 20 mm < f 13 <40 mm. It should be understood that the thirteenth lens E13 functions to converge light and adjust the light angle, enabling correction of aberrations and balancing of chromatic aberration. Through the synergistic effect of the thirteenth lens E13 and other lenses, the color accuracy of the humanoid eye lens imaging can be improved, making the image color more real and natural. In addition, the thirteenth lens E13 is also beneficial to improving the overall stability and reliability of the humanoid eye lens, so that the humanoid eye lens can maintain good imaging performance during long-term use.

[0099] The fourteenth lens E14 has a positive optical power. The light information projection end side S28 of the fourteenth lens is convex, the image receiving end side S29 of the fourteenth lens is concave, and the focal length range of the fourteenth lens E14 is. 80 mm < f 14<100 mm. It should be understood that the fourteenth lens E14 plays a role in converging light and adjusting the light angle in the final stage of light propagation, so that the light is more precisely focused on the imaging surface, thereby improving the clarity and resolution of the image. Through the synergistic effect of the fourteenth lens E14 and other lenses, the light propagation path can be optimized, the light utilization rate can be improved, and spherical aberration, coma and other aberrations can be compensated and corrected, so that the entire field of view of the humanoid eye lens has high quality, providing a reliable optical basis for accurately evaluating the performance of the AR device.

[0100] The fifteenth lens E15 is a plane glass, that is, both the light information projection end side S30 and the image receiving end side S31 of the fifteenth lens are planes. The fifteenth lens E15 is located between the fourteenth lens E14 and the imaging surface, which can play a role in protecting the imaging surface, helping to avoid the influence of dust particles and water stains on the imaging surface, and at the same time enabling the light to pass through the fifteenth lens E15 smoothly to reach the imaging surface, reducing the influence of the external environment on the imaging surface and imaging quality.

[0101] In this embodiment, the focal length f of the humanoid eye lens is -24 mm, the aperture value F is -2.4, and the maximum field of view angle FOV is 43°; the total length of the humanoid eye lens is 230 mm. Table 2 is the basic parameter table of the humanoid eye lens in Embodiment 2.

[0102] Table 2 Basic parameter table of the humanoid eye lens in Embodiment 2

[0103] Figure 8 Shows the distortion curve of the humanoid eye lens in Embodiment 2, which represents the distortion magnitude values corresponding to different field of view angles. From Figure 8 It can be seen that the maximum distortion of the image formed by the humanoid eye lens in this embodiment is less than 2%, which can more truly simulate the human eye visual effect, and thus improve the reliability of the test results of the AR device.

[0104] Figure 9 Shows the relative illumination curve of the humanoid eye lens in Embodiment 2. From Figure 9 It can be seen that the relative illumination curve remains at a high level at different image heights, which indicates that the light transmittance of the entire field of view is high and the imaging brightness is uniform. That is to say, the humanoid eye lens in this embodiment has a high light utilization rate, and thus provides stable and uniform illumination for the test of the AR device, so that the imaging performance of the AR device can be evaluated more accurately.

[0105] Figure 10 Shows the astigmatism curve of the humanoid eye lens in Embodiment 2, which represents the meridional image plane curvature and the sagittal image plane curvature. From Figure 10It can be seen that the astigmatism curve fluctuates little in each field region, indicating good astigmatism control ability. It should be understood that astigmatism can cause inconsistent focusing in different directions of imaging, resulting in blurred and distorted images. However, through the design of the lens group, the humanoid eye lens in this embodiment can reduce astigmatism, and thus clearly present image details during the test of the AR device, providing a more accurate basis for evaluating the imaging performance of the AR device.

[0106] Figure 11 The axial chromatic aberration curve of the humanoid eye lens in Embodiment 2 is shown. From Figure 11 It can be seen that the relative image height ratio differences of light rays with different wavelengths in the axial direction are small, indicating good chromatic aberration correction ability. It should be understood that chromatic aberration can cause defects such as colored edges and color distortion in images. However, through the design of the lens group and material selection in this embodiment, the humanoid eye lens can better correct chromatic aberration to restore image colors, providing more reliable support for evaluating the color performance of the AR device.

[0107] Figure 12 The MTF curve of the humanoid eye lens in Embodiment 2 is shown. From Figure 12 It can be seen that at a spatial frequency of 80 lp / mm, the MTF value is approximately 0.60; at a spatial frequency of 140 lp / mm, the MTF value is approximately 0.24, indicating good resolution. It should be understood that the MTF value reflects the ability to resolve details. The higher the MTF value, the clearer the imaging. That is to say, the humanoid eye lens in this embodiment can present the image details of the AR device more clearly, thereby improving the accuracy of evaluating the imaging clarity of the AR device.

[0108] It is worth mentioning that the human eye is extremely sensitive to image distortion. The distortion of the humanoid eye lens in this application is less than 2%. Therefore, during the test process, the interference of the distortion of the humanoid eye lens on the test results can be reduced, which is beneficial to accurately evaluating the performance of the AR device such as the image superposition accuracy and scene rendering authenticity.

[0109] Furthermore, the humanoid eye lens in this application has a relatively high angular resolution, approximately 227 PPD, which is beneficial to accurately evaluating the clarity and accuracy of the long-distance display of the AR device, reflecting the performance of the AR device in complex scenarios, thereby improving the accuracy and effectiveness of the test of the AR device, as well as improving the quality and user experience of the AR device.

[0110] Even further, the humanoid eye lens in this application has small distortion, small chromatic aberration, small temperature drift, high resolution, and high contrast. Therefore, when testing the AR device, various data indicators can be obtained from the captured images, such as obtaining information about the field of view angle, distortion, resolution, etc. of the AR device, which is beneficial to simplifying the test process of the AR device and improving the test efficiency.

[0111] The foregoing has described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A humanoid eye lens, characterized in that, Comprising: A lens group, which successively includes a first lens to a fourteenth lens from the optical information projection end to the image receiving end, wherein the first lens to the fourteenth lens are all spherical lenses with optical power; A diaphragm, which is located at the optical information projection end of the first lens; Wherein, the spacing distance between the diaphragm and the first lens on the optical axis is denoted as ST, satisfying: 12mm ≤ ST ≤ 13mm.

2. The humanoid eye lens according to claim 1, characterized in that, The spacing distance between the side of the optical information projection end of the first lens and the imaging plane on the optical axis is denoted as TTL, and the focal length of the humanoid eye lens is denoted as f, satisfying: 7 ≤ TTL / f ≤ 10.

3. The humanoid eye lens according to claim 1, characterized in that, The spacing distance between the side of the optical information projection end of the first lens and the imaging plane on the optical axis is denoted as TTL, and the entrance pupil diameter of the humanoid eye lens is denoted as EPD, satisfying: 23 ≤ TTL / EPD ≤ 38.

4. The humanoid eye lens according to claim 1, characterized in that The spacing distance between the side of the image receiving end of the thirteenth lens and the imaging plane on the optical axis is denoted as the back focal length BFL, and the entrance pupil diameter of the humanoid eye lens is denoted as EPD, satisfying: 1.5 ≤ BFL / EPD ≤ 2.

5. The humanoid eye lens according to any one of claims 3-4, characterized in that, The entrance pupil diameter of the humanoid eye lens is denoted as EPD, satisfying: 8mm < EPD < 10mm.

6. The humanoid eye lens according to any one of claims 1-4, characterized in that, The spacing distance between the side of the optical information projection end of the first lens and the imaging plane on the optical axis is denoted as TTL, and the imaging height of the humanoid eye lens is denoted as ImgH, satisfying: TTL / ImgH ≤ 14.

7. The humanoid eye lens according to claim 1, characterized in that, The spacing distance between the side of the image receiving end of the thirteenth lens of the humanoid eye lens and the imaging plane on the optical axis is denoted as the back focal length BFL, the change amount of the back focal length BFL is denoted as ΔBFL, and the humanoid eye lens satisfies: ΔBFL ≤ 3μm under the environmental temperature of 0°C to 45°C.

8. The humanoid eye lens according to any one of claims 1-4, characterized in that, The maximum field of view of the humanoid eye lens is denoted as FOV, satisfying: FOV = 43°.

9. The humanoid eye lens according to any one of claims 1-4, characterized in that, The aperture value of the humanoid eye lens is denoted as Fno, satisfying: -5.5 ≤ Fno ≤ -2.

10. The humanoid eye lens according to any one of claims 1-4, characterized in that, Each lens satisfies the following conditions: The first lens has positive optical power, the side of its optical information projection end is convex, and the side of its image receiving end is convex; The second lens has negative optical power, the side of its optical information projection end is concave, and the side of its image receiving end is concave; The third lens has positive optical power, the side of its optical information projection end is convex, and the side of its image receiving end is convex; The fourth lens has positive optical power, the side of its optical information projection end is convex, and the side of its image receiving end is concave; The fifth lens has negative optical power, the side of its optical information projection end is concave, and the side of its image receiving end is concave; The sixth lens has negative optical power, the side of its optical information projection end is concave, and the side of its image receiving end is convex; The seventh lens has positive optical power, the side of its optical information projection end is concave, and the side of its image receiving end is convex; The eighth lens has positive optical power, the side of its optical information projection end is convex, and the side of its image receiving end is concave; The ninth lens has positive optical power, the side of its optical information projection end is convex, and the side of its image receiving end is convex; The tenth lens has negative optical power, the side of its optical information projection end is concave, and the side of its image receiving end is concave; The eleventh lens has positive optical power, the side of its optical information projection end is convex, and the side of its image receiving end is convex; The twelfth lens has a positive focal power, with its light information projection end side being concave and its image receiving end side being convex; The thirteenth lens has a positive focal power, with its light information projection end side being concave and its image receiving end side being convex; The fourteenth lens has a positive focal power, with its light information projection end side being convex and its image receiving end side being concave.

11. The humanoid eye lens according to any one of claims 1-4, characterized in that, Each lens satisfies the following conditions: The first lens has a positive focal power, with its light information projection end side being convex and its image receiving end side being convex; The second lens has a negative focal power, with its light information projection end side being concave and its image receiving end side being concave; The third lens has a positive focal power, with its light information projection end side being convex and its image receiving end side being convex; The fourth lens has a positive focal power, with its light information projection end side being convex and its image receiving end side being convex; The fifth lens has a positive focal power, with its light information projection end side being convex and its image receiving end side being convex; The sixth lens has a negative focal power, with its light information projection end side being concave and its image receiving end side being concave; The seventh lens has a negative focal power, with its light information projection end side being concave and its image receiving end side being concave; The eighth lens has a positive focal power, with its light information projection end side being convex and its image receiving end side being convex; The ninth lens has a positive focal power, with its light information projection end side being convex and its image receiving end side being concave; The tenth lens has a positive focal power, with its light information projection end side being convex and its image receiving end side being convex; The eleventh lens has a positive focal power, with its light information projection end side being convex and its image receiving end side being convex; The twelfth lens has a negative focal power, with its light information projection end side being concave and its image receiving end side being concave; The thirteenth lens has a positive focal power, with its light information projection end side being concave and its image receiving end side being convex; The fourteenth lens has a positive focal power, with its light information projection end side being convex and its image receiving end side being concave.

12. The humanoid eye lens according to claim 10, wherein, 20mm < f1 < 50mm; -30mm < f2 < -10mm; 20mm < f3 < 50mm; 30mm < f4 < 50mm; -50mm < f5 < -20mm; -70mm < f6 < -30mm; 50mm < f7 < 120mm; 50mm < f8 < 120mm; 30mm < f9 < 60mm; -20mm < f 10 < -10mm; 10mm < f 11 < 40mm; 25mm < f 12 < 40mm; 50mm < f 13 < 70mm; 50mm < f 14 < 70mm; where, f1 to f 14 are the focal lengths of the first lens to the fourteenth lens in sequence.

13. The humanoid eye lens according to claim 11, wherein 10mm < f1 < 30mm; -30mm < f2 < -10mm; 15mm < f3 < 35mm; 50mm < f4 < 70mm; 20mm < f5 < 30mm; -10mm < f6 < 0mm; -20mm < f7 < -10mm; 15mm < f8 < 35mm; 30mm < f9 < 60mm; 15mm < f 10 <35mm; 15mm < f 11 <35mm; -20mm < f 12 <0mm; 20mm < f 13 <40mm; 80mm < f 14 <100mm; where f1 to f 14 are the focal lengths of the first lens to the fourteenth lens in sequence.

14. The humanoid eye lens according to any one of claims 1-4, characterized in that, The image receiving end side of the second lens is adhesively connected to the light information projection end side of the third lens, defining a first adhesive surface between the second lens and the third lens; the image receiving end side of the ninth lens is adhesively connected to the light information projection end side of the tenth lens, defining a second adhesive surface between the ninth lens and the tenth lens.

15. The humanoid eye lens according to claim 14, characterized in that, The image receiving end side of the fifth lens is adhesively connected to the light information projection end side of the sixth lens, defining a third adhesive surface between the fifth lens and the sixth lens.

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