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Wide-angle lens

A wide-angle lens and lens technology, applied in the field of wide-angle lenses, can solve the problems of inability to meet the miniaturization and light weight of the lens, increase the field of view, and can not achieve, and achieve the effect of improving assembly manufacturability, small size, and low cost.

Active Publication Date: 2017-05-10
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to meet the requirements of a wide field of view, the number of lenses is generally increased. For example, the patent application number US201313783385 proposes a six-piece imaging lens to achieve a large field of view, but it cannot meet the requirements of the lens. Requirements for miniaturization and light weight; at the same time, in order to take into account the imaging quality, the further increase of the field of view is limited, and it cannot reach more than 90 degrees

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0145] see Figure 1-4 , in Example 1, the wide-angle lens satisfies the conditions of the following table:

[0146] Table 1

[0147]

[0148]

[0149] Table 2

[0150] face number A4 A6 A8 A10 A12 A14 A16 S1 3.3371E-02 -2.1396E-02 -5.1466E-04 2.4464E-03 -1.2006E-03 0 0 S2 1.1725E-01 4.7114E-02 -6.7843E-02 1.4327E-01 1.1805E-02 0 0 S3 -5.3879E-02 1.3483E-02 -7.3434E-02 4.1236E-02 -4.3607E-03 0 0 S4 1.5756E-03 -5.8696E-02 2.4225E-02 -5.3982E-02 7.5695E-03 0 0 S5 4.3083E-02 -1.6292E-03 -1.0544E-02 -2.4516E-03 -6.5072E-04 0 0 S6 -6.5104E-02 4.9706E-03 7.2829E-03 -7.5353E-03 -9.2358E-04 0 0 S7 -5.1545E-02 -1.5274E-02 -1.8506E-03 2.0758E-03 1.3022E-03 0 0 S8 -3.0656E-02 2.8847E-03 1.8012E-03 1.4567E-04 1.0732E-04 0 0 S9 -2.4187E-02 5.0248E-03 1.5640E-03 9.6475E-05 -3.0798E-04 0 0 S10 4.5729E-02 -1.5185E-02 2.6458E-03 5.6513E-04 3.1301E-04 0 0 S11 ...

Embodiment 2

[0154] see Figure 5-8 , in Example 2, the wide-angle lens satisfies the conditions of the following table:

[0155] Table 4

[0156]

[0157]

[0158] table 5

[0159] face number A4 A6 A8 A10 A12 A14 A16 S1 8.3752E-02 -7.1685E-02 3.3108E-02 -8.5850E-03 3.4089E-04 3.2076E-04 -5.2599E-05 S2 9.4671E-02 4.0582E-01 -2.4040E+00 7.3196E+00 -1.2528E+01 1.1436E+01 -4.3854E+00 S3 -1.5602E-01 2.2699E-01 -3.3850E+00 1.7281E+01 -5.2210E+01 8.0494E+01 -5.0685E+01 S4 -1.1678E-01 3.0805E-02 -2.3973E-01 7.9023E-01 -1.9578E+00 2.1906E+00 -9.7981E-01 S5 -5.4394E-02 1.1025E-01 -1.3782E-01 1.1578E-01 -7.3782E-02 3.4447E-02 -5.9375E-03 S6 -7.6761E-03 -3.8088E-01 1.3376E+00 -2.2851E+00 2.0427E+00 -9.2804E-01 1.7225E-01 S7 7.7581E-02 -2.9450E-01 9.4973E-01 -1.6669E+00 1.4538E+00 -6.0764E-01 9.7867E-02 S8 -1.5313E-02 1.7680E-01 -2.7113E-01 2.2051E-01 -1.0564E-01 2.8681E-02 -3.4182E-03 S...

Embodiment 3

[0163] see Figure 9-12 , in Example 3, the wide-angle lens satisfies the conditions of the following table:

[0164] Table 7

[0165]

[0166]

[0167] Table 8

[0168] face number A4 A6 A8 A10 A12 A14 A16 S1 9.6238E-02 -4.0918E-02 7.2067E-03 -4.3883E-04 -3.1591E-07 -4.5645E-06 0 S2 1.0467E-01 1.1287E-01 -1.4661E-01 1.1465E-01 -8.3571E-02 0 0 S3 -1.2941E-01 -1.5120E-01 -1.8960E-01 4.2867E-01 -1.7470E+00 0 0 S4 -2.9871E-01 -2.0863E-01 1.8326E-01 -1.7363E-02 -1.9122E-01 0 0 S5 -1.6680E-01 -2.1288E-02 1.4876E-02 2.4188E-02 -1.7202E-03 -3.8270E-21 0 S6 -3.7699E-01 9.2644E-02 3.3485E-02 -2.7027E-02 -2.0030E-03 1.5580E-21 0 S7 -1.3864E-01 -1.5975E-02 3.9036E-02 1.2951E-02 3.6477E-04 3.7043E-20 0 S8 7.1191E-02 -2.2383E-02 6.9167E-03 7.6853E-03 -1.1887E-03 -1.3950E-05 0 S9 -1.7068E-01 8.0118E-02 -4.9450E-02 1.4421E-02 -2.6810E-03 8.8517E-04 -3.0812E-04 S10 1....

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Abstract

The invention discloses a wide-angle lens, which comprises a first lens having a negative focal power and provided with a concave image-side surface; second lens having a positive focal power; a third lens having a positive focal power and provided with a convex object-side surface; a fourth lens having a negative focal power; a fifth lens having a positive focal power and provided with a convex image-side surface; and a sixth lens having a negative focal power and provided with a concave image-side surface near the optical axis thereof. The first lens, the second lens, the third lens, the lens, the fourth lens, the fifth lens and the sixth lens are sequentially arranged from the object side to the image side. The wide-angle lens satisfies the following condition of 1.0 <= f2 / f <= 2.0, 0.5 <= f1 / f 4 <=1.5, wherein f1 represents the effective focal length of the first lens; f2 represents the effective focal length of the second lens; f4 represents the effective focal length of the fourth lens; and f represents the effective focal length of the wide-angle lens. According to the technical scheme of the invention, the wide-angle lens has the advantages of ultra-wide field, high definition, small size, improved assembling process, low cost and the like.

Description

technical field [0001] The invention relates to optical imaging technology, in particular to a wide-angle lens. Background technique [0002] Currently, photosensitive elements of optical imaging systems include charge-coupled device (charge-coupled device, CCD) or complementary metal-oxide semiconductor (complementary metal-oxide semiconductor, CMOS) image sensors. With the development of semiconductor process technology, the pixel size of the photosensitive element is getting smaller and smaller, correspondingly, the imaging lens also needs to have a smaller size and higher imaging quality. [0003] At the same time, as the application fields of imaging lenses become wider and wider, the demand for shooting range is also wider and wider. Therefore, in order to meet the requirements of a wide field of view, the number of lenses is generally increased. For example, the patent application number US201313783385 proposes a six-piece imaging lens to achieve a large field of vie...

Claims

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Application Information

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IPC IPC(8): G02B13/06G02B13/00
CPCG02B13/0045G02B13/06G02B13/00G02B13/04G02B13/18G02B9/62G02B9/64
Inventor 戴付建
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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