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Ultra-wide field optical photographing lens group

A camera lens and ultra-wide-angle technology, applied in the field of ultra-wide-angle optical camera lens groups, can solve the problem that optical lenses are difficult to have both large viewing angle and short overall length

Pending Publication Date: 2018-11-06
江苏光腾光学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, electronic products are developing towards thinner and smaller size, especially the popularity of handheld devices. Therefore, the matching imaging device also needs to be miniaturized. thin electronic device

Method used

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  • Ultra-wide field optical photographing lens group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Combine below figure 2 and image 3 Detailed description:

[0033] The ultra-wide-angle optical camera lens group in embodiment 1 comprises sequentially from the object side to the image side:

[0034] The first lens 1 has a negative refractive power; the second lens 2 has a positive refractive power; the third lens 3 has a positive refractive power, and the near optical axis of the image side surface is a convex surface; the fourth lens 4 has a negative refractive power, The image-side surface near the optical axis is concave, and the image-side surface off-axis includes at least one convex surface; the fifth lens 5 has positive refractive power, the image-side surface near the optical axis is concave, and the image-side surface off-axis includes at least one convex.

[0035] Among them, the focal length of the first lens 1 is f1, the focal length of the second lens 2 is f2, the focal length of the third lens 3 is f3, the focal length of the fourth lens 4 is f4, th...

Embodiment 2

[0055] combine Figure 4 , 5 Detailed description: Wherein the part identical with embodiment 1 is omitted:

[0056] The following table is the detailed structural data of embodiment 2:

[0057]

[0058] Among them: the unit of radius of curvature, thickness and focal length is mm, surface 0-14 represents the surface from the object side to the image side. The material of the infrared filtering filter component is glass, which is arranged between the fifth lens and the imaging surface, and does not affect the focal length of the image capturing optical lens system.

[0059] The ultra-wide-angle optical camera lens group image-capturing optical lens group in Embodiment 2 is provided with an aperture, and the aperture is arranged between the second lens and the third lens, which can provide a wide viewing angle configuration advantage, and the first to fifth lenses Each lens in the lens has at least one aspheric surface, which can correct the system aberration and further ...

Embodiment 3

[0073] combine Image 6 , 7 Detailed description: Wherein the part identical with embodiment 1 is omitted:

[0074] The following table is the detailed structural data of embodiment 3:

[0075]

[0076] Among them: the unit of radius of curvature, thickness and focal length is mm, surface 0-14 represents the surface from the object side to the image side. The material of the infrared filtering filter component is glass, which is arranged between the fifth lens and the imaging surface, and does not affect the focal length of the image capturing optical lens system.

[0077] The ultra-wide-angle optical camera lens group image-capturing optical lens group in Embodiment 3 is provided with an aperture, and the aperture is arranged between the second lens and the third lens, which can provide a wide viewing angle configuration advantage, and the first to fifth lenses Each lens in the lens has at least one aspheric surface, which can correct the system aberration and further s...

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Abstract

The invention discloses an ultra-wide field optical photographing lens group which comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object to an image in sequence, wherein the first lens has negative refraction power; the second lens has positive refraction power; the third lens has positive refraction power and a convex surface near an optical axis on the surface of an image side; the fourth lens has negative refraction power, a concave surface near the optical axis on the surface of the image side and at least one convex surface away from the optical axis on the surface of the image side; the fifth lens has positive refraction power, a concave surface near the optical axis of the surface of the image side and a convex surface away from the optical axis of the surface of the image side; the second lens and the third lens have positive refraction power. The ultra-wide field optical photographing lens group is capable of effectively inhibitinga total length and has relatively large view angles, ultra-wide field view angles can be achieved with a short total length, and requirements of minimization and large view angles can be met.

Description

technical field [0001] The invention relates to the field of small camera and imaging lenses for electronic products, in particular to an ultra-wide-angle optical camera lens group. Background technique [0002] The lens is composed of lenses (convex lens, concave lens), and multiple lenses are finally formed into a lens through various combinations, among which three-piece, four-piece, and five-piece lenses are more common. In recent years, electronic products are developing towards thinner and smaller size, especially the popularity of handheld devices. Therefore, the matching imaging device also needs to be miniaturized. thin and light electronic devices. Contents of the invention [0003] The present invention overcomes the existing defects and provides an ultra-wide-angle optical camera lens group, which has both a large viewing angle and a short overall length, and is suitable for use on miniaturized equipment. [0004] The present invention is realized through the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/06G02B13/18
Inventor 曾咏杰
Owner 江苏光腾光学有限公司
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