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camera lens

A camera lens and lens technology, which is applied in the field of camera lenses, can solve the problems of insufficient Abbe number focal length ratio of the second lens and the center thickness ratio of the first lens, insufficient Fno brightness, poor Abbe number, etc.

Active Publication Date: 2021-04-23
AAC OPTICS (CHANGZHOU) CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The imaging lens disclosed in the related art is the above-mentioned imaging lens composed of five lenses, but the difference between the Abbe numbers of the second lens and the fourth lens, the second lens and the fifth lens, the difference between the second lens and the fourth lens The ratio of the focal length and the ratio of the center thickness of the second lens to the first lens are not sufficient, so ultra-thinning and Fno brightness are not sufficient
[0005] The imaging lens disclosed in the related art is the above-mentioned imaging lens composed of five lenses, but the difference between the Abbe numbers of the second lens and the fourth lens and the ratio of the center thicknesses of the second lens and the first lens are insufficient, so Ultra-thin and insufficient brightness of Fno

Method used

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Embodiment 1

[0139] figure 2 It is an arrangement configuration diagram of the imaging lens LA in the first embodiment. The data in Table 1 include: the radius of curvature R of the object side and the image side of the first lens L1 to the fifth lens L5 constituting the imaging lens LA in Example 1, the center thickness of the lens, the axial distance d between the lenses, and the refractive index nd, Abbe number νd. The data in Table 2 include: conic coefficient k, aspheric coefficient.

[0140] 【Table 1】

[0141]

[0142] 【Table 2】

[0143]

[0144]

[0145] Table 7 that appears later shows the values ​​corresponding to the various numerical values ​​in Examples 1 to 3 and the parameters specified in conditional formulas (1) to (7).

[0146] As shown in Table 7, Example 1 satisfies conditional formulas (1) to (7).

Embodiment 2

[0149] Figure 6 It is an arrangement configuration diagram of the imaging lens LA in the second embodiment. The data in Table 3 include: the radius of curvature R on the object side and the image side of the first lens L1 to the fifth lens L5 constituting the imaging lens LA in Example 2, the center thickness of the lenses, the axial distance d between the lenses, and the refractive index nd, Abbe number νd. The data in Table 4 include: conic coefficient k, aspheric coefficient.

[0150] 【table 3】

[0151]

[0152]

[0153] 【Table 4】

[0154]

[0155] As shown in Table 7, Example 2 satisfies conditional formulas (1)-(7).

[0156] The axial aberration of camera lens LA among the embodiment 2 sees Figure 7 , chromatic aberration of magnification see Figure 8 , field curvature and distortion see Figure 9 shown. Such as Figure 7-9 As shown, the imaging lens LA in Example 2 is 2ω=91.6°, TTL / IH=1.298, Fno=2.02, 2ω≥85° and the ultra-thin Fno is bright, so it is n...

Embodiment 3

[0158] Figure 10 It is an arrangement configuration diagram of the imaging lens LA in the third embodiment. The data in Table 5 include: the radius of curvature R of the object side and the image side of the first lens L1 to the fifth lens L5 constituting the imaging lens LA in Example 3, the center thickness of the lens, the axial distance d between the lenses, and the refractive index nd, Abbe number νd. The data in Table 6 include: conic coefficient k, aspheric coefficient.

[0159] 【table 5】

[0160]

[0161]

[0162] 【Table 6】

[0163]

[0164] As shown in Table 7, Example 3 satisfies conditional formulas (1)-(7).

[0165] The axial aberration of camera lens LA among the embodiment 3 sees Figure 11 , chromatic aberration of magnification see Figure 12 , field curvature and distortion see Figure 13 shown. Such as Figures 11 to 13 As shown, the imaging lens LA in Example 2 is 2ω=88.0°, TTL / IH=1.312, Fno=2.00, 2ω≥85° and the ultra-thin Fno is bright, w...

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Abstract

The present invention provides an ultra-thin imaging lens composed of five lenses with excellent optical characteristics, an angle of view of more than 85°, and a bright F number. It is arranged sequentially from the object side: a first lens with positive refractive power, a second lens with positive refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, and a lens with negative refractive power. 5th lens, and satisfies the prescribed conditional formula.

Description

【Technical field】 [0001] The present invention relates to an invention of an imaging lens. In particular, it involves mobile phone camera components, WEB camera lenses, etc., which are suitable for high-pixel CCD, CMOS and other imaging elements, and has excellent optical characteristics, TTL (optical length) / IH (image height) ≤ 1.35 2ω) is an imaging lens composed of 5 lenses with a wide angle of 85° or more and an F-number (hereinafter referred to as Fno) of 2.05 or less. 【Background technique】 [0002] In recent years, various imaging devices using imaging elements such as CCDs and CMOSs ​​have spread widely. With the miniaturization and high-performance development of these imaging elements, the society needs more and more imaging lenses with excellent optical characteristics, ultra-thin, wide-angle and bright Fno. [0003] The technological development related to the imaging lens consisting of 5 lenses with excellent optical characteristics, ultra-thin, wide-angle, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/06G02B13/18G02B9/60
Inventor 寺冈弘之
Owner AAC OPTICS (CHANGZHOU) CO LTD
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