Camera Optical Lens

A technology of optical lens and optical total length, applied in the field of optical lens, can solve the problems of unreasonable setting of optical power, lens spacing and lens shape, unable to meet ultra-thin, wide-angle, etc., and achieve the effect of good optical performance

Active Publication Date: 2021-10-19
AAC OPTICS (CHANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of technology and the increase of diversified needs of users, the pixel area of ​​the photosensitive device is constantly shrinking, and the system’s requirements for imaging quality are constantly improving. Although the common three-piece le

Method used

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  • Camera Optical Lens
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0058] Please refer to the accompanying drawings, the present invention provides a camera optical lens 10 . figure 1Shown is an imaging optical lens 10 according to a first embodiment of the present invention, and the imaging optical lens 10 includes three lenses. Specifically, the imaging optical lens 10 includes, from the object side to the image side in sequence: an aperture S1, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a third lens L2 with positive refractive power. Lens L3. An optical element such as an optical filter (filter) GF may be disposed between the third lens L3 and the image plane Si.

[0059] In this embodiment, the focal length of the imaging optical lens 10 is defined as f, the focal length of the first lens L1 is f1, and the following relationship is satisfied: 0.80≤f1 / f≤1.10, which defines the focal length of the first lens L1 The ratio to the focal length of the imaging optical lens 10 can effect...

no. 2 approach

[0130] The second embodiment is basically the same as the first embodiment, and the meanings of symbols are the same as those of the first embodiment. For the structure of the imaging optical lens 20 of the second embodiment, please refer to Figure 5 As shown, only the differences are listed below.

[0131] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0132] 【table 5】

[0133]

[0134]

[0135] Table 6 shows the aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0136] 【Table 6】

[0137]

[0138] Table 7 and Table 8 show the design data of inflection point and stagnation point of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0139] 【Table 7】

[0140] Number of inflection points Inflection point position 1 Inflection point positio...

no. 3 approach

[0148] The third embodiment is basically the same as the first embodiment, and the meanings of symbols are the same as those of the first embodiment. For the structural form of the imaging optical lens 30 of the third embodiment, please refer to Figure 9 As shown, only the differences are listed below.

[0149] Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0150] 【Table 9】

[0151]

[0152]

[0153] Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0154] 【Table 10】

[0155]

[0156] Table 11 and Table 12 show the design data of the inflection point and the stagnation point of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.

[0157] 【Table 11】

[0158] Number of inflection points Inflection point position 1 Inflection point po...

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Abstract

The present invention provides an imaging optical lens, which sequentially comprises from the object side to the image side: a first lens with positive refractive power, a second lens with negative refractive power, and a third lens with positive refractive power; The focal length of the optical lens is f, the focal length of the first lens is f1, the radius of curvature of the image side of the first lens is R2, the radius of curvature of the object side of the second lens is R3, the radius of curvature of the image side of the second lens is R4, and the third The radius of curvature on the object side of the lens is R5, the radius of curvature on the image side of the third lens is R6, the on-axis thickness of the second lens is d3, and the on-axis thickness of the third lens is d5, satisfying the following relationship: 0.80≤f1/f ≤1.10; 0.30≤d3/d5≤1.00; ‑20.00≤(R5+R6)/(R5‑R6)≤‑10.00; 5.00≤R2/f≤50.00; ‑10.00≤(R3+R4)/(R3‑R4 )≤‑4.00. The imaging optical lens provided by the invention has good optical performance and at the same time satisfies the design requirements of wide-angle and ultra-thin.

Description

【Technical field】 [0001] The invention relates to the field of optical lenses, in particular to an imaging optical lens suitable for portable terminal devices such as smart phones and digital cameras, and imaging devices such as monitors and PC lenses. 【Background technique】 [0002] In recent years, with the rise of smart phones, the demand for miniaturized photographic lenses has been increasing, and the photosensitive devices of general photographic lenses are nothing more than photocoupled devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor devices (Complementary Metal -Oxide Semiconductor Sensor, CMOS Sensor), and due to the improvement of semiconductor manufacturing process technology, the pixel size of photosensitive devices has been reduced, and today's electronic products are developing with good functions and thin, light and small appearance. Therefore, it has Miniaturized camera lenses with good imaging quality have become the mainstrea...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0035G02B13/06G02B13/18G02B9/14G02B27/0025
Inventor 卞旭琪陈佳
Owner AAC OPTICS (CHANGZHOU) CO LTD
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