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Imaging lens

A camera lens, lens technology, applied in the field of camera lens, can solve the problem of insufficient shape and so on

Active Publication Date: 2017-07-14
AAC OPTICS SOLUTIONS PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The imaging lens disclosed in the embodiment of Patent Document 1 is composed of the above five lenses, but the diopter distribution of the first lens and the shape of the third lens and the fifth lens are not sufficient, so it is a wide angle of 2ω≧75.8
[0007] The imaging lens disclosed in Examples 2 and 3 of Patent Document 2 is composed of the above five lenses, but the diopter distribution of the first lens and the shape of the third lens and the fifth lens are not sufficient, so it is a wide angle of 2ω≧64.0

Method used

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Examples

Experimental program
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Embodiment 1

[0171] figure 2 It is a diagram showing the configuration of the imaging lens LA in Example 1. 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 vd. The data in Table 2 include: conic coefficient k, aspheric coefficient.

[0172] 【Table 1】

[0173]

[0174] 【Table 2】

[0175]

[0176] Subsequent Table 5 lists the numerical values ​​corresponding to the parameters specified in the conditional formulas (1)-(7) in Examples 1 and 2.

[0177] As shown in Table 5, Example 1 satisfies conditional formulas (1)-(7).

Embodiment 2

[0180] Figure 6 It is a diagram illustrating the configuration of the imaging lens LA in Example 2. The data in Table 3 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 2, the center thickness of the lens, the axial distance d between the lenses, and the refractive index. n d, Abbe number vd. The data in Table 4 include: conic coefficient k, aspheric coefficient.

[0181] 【table 3】

[0182]

[0183] 【Table 4】

[0184]

[0185] As shown in Table 5, Example 2 satisfies conditional formulas (1)-(7).

[0186] The axial aberration of camera lens LA among the embodiment 2 sees Figure 7 , vertical axis chromatic aberration see Figure 8 , field curvature and distortion see Figure 9 shown. Such as Figure 7-9 As shown, Fno=2.60, 2ω=47.3°, TTL=5.280mm of the imaging lens LA in Example 2, and the lens is a narrow-angle, compact lens, so it is not difficult to u...

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Abstract

The invention provides an imaging lens which exhibits excellent optical properties, has a narrow angle, is miniature, and consists of five lenses. The imaing lens is sequentially provided with from an object side: a first lens with positive diopter, a second lens with negative diopter, a third lens with positive diopter, a fourth lens with negative diopter, and a fifth lens with negative diopter, meeting all prescribed conditions.

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 is composed of 5 compact lenses with excellent optical properties, a full angle of view (hereinafter referred to as 2ω), a narrow angle of 50° or less. [0003] 【Background technique】 [0004] In recent years, various imaging devices using imaging elements such as CCDs and CMOSs ​​have spread widely. With the development of miniaturization and high performance of imaging elements, the society needs more excellent optical characteristics, narrow angle, and compact imaging lenses. [0005] The technological development related to the imaging lens consisting of 5 compact lenses with excellent optical characteristics is advancing step by step. The proposed scheme is that the imaging lens is composed of five lenses...

Claims

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Application Information

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IPC IPC(8): G02B13/00
CPCG02B13/0015G02B13/0045G02B13/0055G02B9/60
Inventor 寺冈弘之
Owner AAC OPTICS SOLUTIONS PTE LTD