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Wide-viewing-angle lens for short-distance shooting

A wide-angle, short-distance technology, applied to optical components, instruments, optics, etc., to reduce production costs, reduce the number of lenses, and increase the range of light collection

Active Publication Date: 2022-07-22
东莞晶彩光学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve the effect of wide viewing angle, more lenses are usually used in combination, which is inconsistent with the miniaturization development trend of short lenses and miniature lenses. Therefore, there is an urgent need for a wide viewing angle lens that can solve the above problems

Method used

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  • Wide-viewing-angle lens for short-distance shooting
  • Wide-viewing-angle lens for short-distance shooting
  • Wide-viewing-angle lens for short-distance shooting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] figure 1 It is a schematic structural diagram of the wide viewing angle lens according to Embodiment 1 of the present invention. figure 2 It is a field curve aberration diagram of the wide-angle lens of the present invention. image 3 Distortion aberration diagram of the wide-angle lens of the present invention. Figure 4 It is the longitudinal spherical aberration diagram (Longitudinal Spherical Aberration) of the wide-angle lens of the present invention.

[0045] like figure 1 As shown, a wide-angle lens for close-up shooting in Embodiment 1, from the object side to the image side, includes:

[0046] The first lens 10 with positive refractive power is made of plastic, the object side L1a of the first lens 10 is convex at the near-optical axis, and the image side L1b of the first lens 10 is concave at the near-optical axis;

[0047] Aperture 20, the function of aperture 20 is to reduce stray light interference;

[0048] The second lens 30 with positive refractive...

Embodiment 2

[0073] Figure 5 It is a schematic structural diagram of a wide viewing angle lens according to Embodiment 2 of the present invention. Image 6 It is a field curve aberration diagram of the wide-angle lens of the present invention. Figure 7 Distortion aberration diagram of the wide-angle lens of the present invention. Figure 8 It is the longitudinal spherical aberration diagram (Longitudinal Spherical Aberration) of the wide-angle lens of the present invention.

[0074] like Figure 5 As shown, a wide-angle lens for close-up shooting in Embodiment 2, from the object side to the image side, includes:

[0075] The first lens 10 with positive refractive power is made of plastic, the object side L1a of the first lens 10 is convex at the near-optical axis, and the image side L1b of the first lens 10 is concave at the near-optical axis;

[0076] Aperture 20, the function of aperture 20 is to reduce stray light interference;

[0077] The second lens 30 with positive refractive...

Embodiment 3

[0101] Figure 9 It is a schematic structural diagram of a wide viewing angle lens according to Embodiment 3 of the present invention. Figure 10 It is a field curve aberration diagram of the wide-angle lens of the present invention. Figure 11 Distortion aberration diagram of the wide-angle lens of the present invention. Figure 12 It is the longitudinal spherical aberration diagram (Longitudinal Spherical Aberration) of the wide-angle lens of the present invention.

[0102] like Figure 9 As shown, a wide-angle lens for close-up shooting in Embodiment 3, from the object side to the image side, includes:

[0103] The first lens 10 with positive refractive power is made of plastic, the object side L1a of the first lens 10 is convex at the near-optical axis, and the image side L1b of the first lens 10 is concave at the near-optical axis;

[0104] Aperture 20, the function of aperture 20 is to reduce stray light interference;

[0105] The second lens 30 with positive refrac...

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Abstract

The invention provides a wide-viewing-angle lens for short-distance shooting. The wide-viewing-angle lens sequentially comprises a first lens, an aperture, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side. Only five lenses are adopted for cooperative imaging, the number of the lenses is small, production cost can be reduced, the lens can be applied to small close-range shooting equipment such as a short lens and a miniature lens, the size is small, the view field is large, incident light within a large angle range can be received, the light receiving range of a wide-view-angle lens is widened, and through testing, the wide-view-angle lens can be widely applied to large-view-angle shooting equipment. And the maximum half field angle can reach 53.9 degrees.

Description

technical field [0001] The invention relates to the technical field of optical lenses, in particular to a wide-angle lens for close-up shooting. Background technique [0002] With the development of science and technology, close-up shooting devices are gradually emerging. The optical system photosensitive elements of close-up shooting equipment are nothing more than two types of photosensitive coupling elements or complementary metal oxide semiconductor elements. Pixel size shrinks, and optical systems tend to have higher pixels and higher image quality. [0003] In order to meet this trend, high image quality, miniaturization, and wide-angle are further required for small close-up photography devices applied to short lenses and micro lenses. In order to achieve the effect of wide viewing angle, more lenses are usually used in combination, which is inconsistent with the miniaturization development trend of short lenses and miniature lenses. Therefore, a wide viewing angle l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/06G02B13/00G02B13/18
CPCG02B13/06G02B13/0045
Inventor 许智程谭沿河姚雅兰
Owner 东莞晶彩光学有限公司
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