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Camera lens

A camera lens and lens technology, applied in the field of camera lenses, can solve the problems of thinning, insufficient wide-angle, insufficient power distribution of the fifth lens, etc., and achieve the effect of good optical characteristics

Active Publication Date: 2020-08-14
AAC OPTICS (CHANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the camera lenses disclosed in Embodiments 1, 2, 6, 7, 8, 9, and 10 of the document "JP-A-2014-102408", the difference between the Abbe number of the first lens and the Abbe number of the second lens , the difference between the Abbe number of the first lens and the Abbe number of the third lens, the ratio of the focal length of the first lens to the focal length of the second lens, and the power distribution of the fifth lens is insufficient, so thinning and wide-angle are not sufficient

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0124] figure 1 It is a configuration diagram showing the arrangement of the imaging lens LA of the first embodiment. Table 1 shows the design data of the first lens L1 to the seventh lens L7 of the imaging lens LA of the first embodiment, including the radius of curvature R, the axial thickness or the axial distance d, the refractive index nd, the Abbe number vd, and the effective Radius, wherein the data of refractive index nd, Abbe number vd and effective radius correspond to a wavelength of 588.0 nm.

[0125] 【Table 1】

[0126]

[0127] Table 2 shows the conic coefficient and aspheric coefficient of each lens in the imaging lens LA according to the first embodiment of the present invention.

[0128] 【Table 2】

[0129]

[0130] Among them, k is the conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20 are aspherical coefficients.

[0131] y=(x 2 / R) / [1+{1-(k+1)(x 2 / R 2 )} 1 / 2 ]+A4x 4 +A6x 6 +A8x 8 +A10x 10 +A12x 12 +A14x 14 +A16x 16 +A18x 18 +A2...

no. 2 approach

[0141] image 3 It is a configuration diagram showing the arrangement of the imaging lens LA of the second embodiment. Table 4 shows the design data of the first lens L1 to the seventh lens L7 constituting the imaging lens LA of the second embodiment, including the radius of curvature R, the axial thickness or the axial distance d, the refractive index nd, the Abbe number vd, and The effective radius, wherein the data of the refractive index nd, the Abbe number vd and the effective radius correspond to a wavelength of 588.0 nm.

[0142]【Table 4】

[0143]

[0144] Table 5 shows the conic coefficient and aspheric coefficient of each lens in the imaging lens LA according to the second embodiment of the present invention.

[0145] 【table 5】

[0146]

[0147] Table 6 shows data of 2ω, Fno, f, f1, f2, f3, f4, f5, f6, f7, TTL, LB, and IH of the imaging lens LA according to the second embodiment of the present invention.

[0148] 【Table 6】

[0149] 2ω(°) 83.02 ...

no. 3 approach

[0154] Figure 5 It is a configuration diagram showing the arrangement of the imaging lens LA of the third embodiment. Table 7 shows the design data of the first lens L1 to the seventh lens L7 constituting the imaging lens LA of the third embodiment, including the radius of curvature R, the axial thickness or the axial distance d, the refractive index nd, the Abbe number vd, and The effective radius, wherein the data of the refractive index nd, the Abbe number vd and the effective radius correspond to a wavelength of 588.0 nm.

[0155] 【Table 7】

[0156]

[0157] Table 8 shows the conic coefficient and aspheric coefficient of each lens in the imaging lens LA according to the third embodiment of the present invention.

[0158] 【Table 8】

[0159]

[0160] Table 9 shows data of 2ω, Fno, f, f1, f2, f3, f4, f5, f6, f7, TTL, LB, and IH of the imaging lens LA according to the third embodiment of the present invention.

[0161] 【Table 9】

[0162] 2ω(°) 83.01 ...

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Abstract

The invention relates to the technical field of optical lens, and discloses a camera lens. The camera lens sequentially comprises following lenses from the object side to the image side: a first lenswith positive refraction power; a second lens with negative refraction power; a third lens with positive refraction power; a fourth lens with positive refraction power; a fifth lens with negative refraction power; a sixth lens with positive refraction power; and a seventh lens with negative refraction power; and satisfies a prescribed relationship. The camera lens has the advantages of thinness and wide angle and has good optical characteristics.

Description

technical field [0001] The present invention relates to a kind of photographing lens, relate to a kind of mobile phone photographing lens assembly and WEB photographing lens that are suitable for the camera element such as CCD, CMOS that are used for high pixel in particular, TTL (optical total length) / IH (image height) <1.30 and An imaging lens composed of seven lenses that is thin and has a full viewing angle (hereinafter referred to as 2ω) of 80° or more and has good optical characteristics. Background technique [0002] In recent years, various imaging devices using imaging elements such as CCD and CMOS have been widely used. Along with miniaturization and higher performance of these imaging elements, there is an urgent need for imaging lenses that are thin, wide-angle, and have good optical characteristics. [0003] Therefore, technical development of an imaging lens composed of seven lenses that is thin, wide-angle, and has good optical characteristics is currently...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0045G02B13/06G02B9/64G02B13/04
Inventor 新田耕二寺岡弘之
Owner AAC OPTICS (CHANGZHOU) CO LTD