Imaging lens

A camera lens and lens technology, applied in the field of camera lens, can solve the problems of insufficient shape, insufficient ultra-thin brightness, etc., and achieve the effect of high light quantity and excellent optical characteristics

Active Publication Date: 2017-07-18
AAC OPTICS SOLUTIONS PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The imaging lens disclosed in Examples 1 to 5 in Patent Document 1 (Patent No. 5513641) is composed of five lenses as described above, but the diopter distribution of the third lens and the shape of the first lens and the second lens are not sufficient, so TTL / IH 1.58, Fno≧2.20 ultra-thin and insufficient brightness
[0007] The imaging lens disclosed in Examples 1 to 4 in Patent Document 2 (Japanese Unexamined Patent Application Publication No. 2016-020973) is composed of the above five lenses, but the diopter distribution of the first lens and the shape of the first lens and the second lens are insufficient. , so TTL / IH1.514, Fno≧2.24 ultra-thin and insufficient brightness

Method used

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Examples

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Embodiment 1

[0145] figure 2 It is a diagram showing the structure of the imaging lens LA in the first embodiment. The data in Table 1 include: the curvature radius R of the object side surface and the image side surface of the first lens L1 to the fifth lens L5 constituting the imaging lens LA in Example 1, the center thickness of the lenses, the on-axis distance d between the lenses, the refractive index nd, Abbe number νd. The data in Table 2 are: cone coefficient k, aspheric coefficient.

[0146] 【Table 1】

[0147]

[0148] 【Table 2】

[0149]

[0150] Subsequent Table 5 lists the numerical values ​​of the respective numerical values ​​in Examples 1 and 2 and the numerical values ​​corresponding to the parameters specified in the conditional formulae (1) to (6).

[0151] As shown in Table 5, Example 1 satisfies conditional formulae (1) to (6).

Embodiment 2

[0154] Image 6 It is a diagram showing the structure of the imaging lens LA in the second embodiment. The data in Table 2 include: the curvature radius R of the object side surface and the image side surface of the first lens L3 to the fifth lens L5 constituting the imaging lens LA in Example 1, the center thickness of the lenses, the on-axis distance d between the lenses, the refractive index nd, Abbe number νd. The data in Table 4 are: cone coefficient k, aspheric coefficient.

[0155] 【table 3】

[0156]

[0157] 【Table 4】

[0158]

[0159] As shown in Table 5, Example 2 satisfies conditional formulae (1) to (6).

[0160] The axial aberration of the imaging lens LA in Example 2 is shown in Figure 7 , see vertical chromatic aberration Figure 8 , field curvature and distortion see Figure 9 shown. like Figures 7 to 9 As shown, in Example 2, the camera lens LA is 2ω=80.6°, TTL / IH=1.351, Fno=2.05, and the lens is an ultra-thin, wide-angle lens with high light in...

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Abstract

The present invention provides an imaging lens composed of 5 lenses having excellent optical characteristics, ultra-thin, wide angle and high pass light; a first lens having positive dioptric power, a second lens having negative diopters, a third lens having positive dioptric power, a fourth lens having a positive diopter, and a fifth lens having a positive diopter are arranged in order from the object side, and the regulated conditions are specified.

Description

[0001] 【Technical field】 [0002] The invention relates to a camera lens, in particular to a camera lens suitable for mobile phone camera components, WEB cameras and the like using high-pixel CCD, CMOS and other camera elements. The imaging lens of the present invention includes 5 lenses, has excellent optical characteristics TTL (optical length) / IH (image height) 1.40, ultra-thin, full picture angle (hereinafter referred to as 2ω) 78° or more, wide angle, and high light quantity F value (hereinafter referred to as Fno) Fno is 2.10 or less. [0003] 【Background technique】 [0004] In recent years, various imaging devices using imaging elements such as CCDs and CMOSs ​​have become widespread. With the development of miniaturization and high performance of imaging elements, the society demands more wide-angle imaging lenses with excellent optical properties, ultra-thin, and high light output (Fno). [0005] Technological development related to an imaging lens consisting of five...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
Inventor 王建明寺冈弘之
Owner AAC OPTICS SOLUTIONS PTE LTD
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