Large-wide-angle high-pixel imaging lens
An imaging lens, high-pixel technology, used in optics, instruments, optical components, etc., can solve the problems of picture distortion, small aperture, and failure to reach customers, and achieve widening the field of view, controlling distortion and chromatic aberration, and reducing image quality. poor effect
Pending Publication Date: 2020-02-07
HUIZHOU SAGETECH OPTRONICS CO LTD
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Problems solved by technology
[0003] The traditional five-element imaging lens can meet the requirements of large field of view, but often the resolution of the lens is not enough to meet the needs of customers
For example, patent documents with patent numbers CN110262015A and CN109782418A, both of which disclose imaging lenses adopt a five-piece structure, which can have a large field of view, but the half-image height is less than 2.88mm, which cannot meet the requirements of large screens and high pixels.
[0004] Another example is the patent with the patent publication number CN108732716A, and the patent name is "camera system lens group, imaging device and electronic device". The picture is severely distorted and cannot meet the needs of wide-angle shooting experience, and the aperture of the above embodiment is too small to meet the requirements of Fno2.2 or larger aperture, and the experience of taking pictures in a darkroom environment is poor
Method used
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Examples
Experimental program
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Effect test
no. 1 example
[0056] Please combine Figure 3 to Figure 7 , in the first embodiment, the imaging lens satisfies the conditions of Table 1 and Table 2:
[0057] Table 1 Structural parameter table of imaging lens.
[0058]
[0059] Table 2 Lens aspheric coefficient table of imaging lens.
[0060]
[0061] From image 3 It can be seen that the distortion value of the imaging lens is controlled within 20%, and the field curvature value is controlled within ±0.05mm. From Figure 5 From the Ray Fan diagram, it can be seen that the forcedly optimized imaging lens has obtained good imaging characteristics.
no. 2 example
[0063] Please combine Figure 8 to Figure 12 , in the second embodiment, the imaging lens satisfies the conditions of Table 3 and Table 4:
[0064] Table 3 Structural parameter table of the imaging lens.
[0065]
[0066] Table 4 Lens aspheric coefficient table of imaging lens.
[0067]
no. 3 example
[0069] Please combine Figure 13 to Figure 17 , in the third embodiment, the imaging lens satisfies the conditions of Table 5 and Table 6:
[0070] Table 5 Structural parameter table of the imaging lens.
[0071]
[0072] Table 6 Lens aspheric coefficient table of imaging lens.
[0073]
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The invention relates to a large-wide-angle high-pixel imaging lens. The large-wide-angle high-pixel imaging lens comprises in order from an object side to an image side along the optical axis of theimaging lens: a first negative lens having a first refractive index, a second positive lens having a second refractive index, a third negative lens having a third refractive index, a fourth positive lens having a fourth refractive index, a fifth negative lens having a fifth refractive index, and a sixth lens having a sixth refractive index; and the first refractive index, the second refractive index, the fourth refractive index and the fifth refractive index are all smaller than the third refractive index and the sixth refractive index, the first refractive index, the second refractive index,the fourth refractive index and the fifth refractive index are the same, and the third refractive index and the sixth refractive index are the same. The large-wide-angle high-pixel imaging lens can achieve the high resolution and the large field angle, can effectively shorten the total optical length of the imaging lens, and can improve the tolerance resistance of the imaging lens.
Description
technical field [0001] The invention relates to the technical field of optical imaging, in particular to a large wide-angle high-pixel imaging lens. Background technique [0002] With the advent of the 5G era, imaging lenses are widely used in portable electronic products. People have higher and higher requirements for the experience of taking photos with a large field of view, which makes the requirements for the field of view of the imaging lens larger and larger. Lens with field angle and high resolution will be a competitive product in the mobile phone lens industry. [0003] The traditional five-element imaging lens can meet the requirements of large field of view, but often the resolution of the lens is not enough to meet the needs of customers. For example, the patent documents CN110262015A and CN109782418A, both of which disclose imaging lenses adopt a five-chip structure, which can have a large field of view, but the half-image height is less than 2.88mm, which can...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G02B13/06G02B13/00G02B13/18G02B1/04
CPCG02B1/041G02B13/0045G02B13/06
Inventor 陈龙泉邱兆贤张文俊
Owner HUIZHOU SAGETECH OPTRONICS CO LTD