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Optical camera lens

A camera lens, optical technology, applied in optics, optical components, instruments, etc., can solve the problems of large image surface, large aperture and miniaturization at the same time.

Pending Publication Date: 2022-01-21
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a kind of optical photographing lens, to solve the problem that the optical photographing lens in the prior art has large image surface, large aperture and miniaturization and is difficult to take into account at the same time

Method used

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Examples

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Effect test

Embodiment 1

[0067] Such as Figure 1 to Figure 24 As shown, the optical camera lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens in order from the light incident side to the light output side along the optical axis The surface close to the exit side of the second lens is concave; the surface close to the incident side of the fifth lens is convex; wherein, there are at least three from the surface close to the incident side of the first lens to the surface close to the exit side of the fourth lens The surface is concave; the effective focal length f of the optical camera lens and the entrance pupil diameter EPD of the optical camera lens meet: f / EPD<1.3.

[0068] By restricting the ratio between the effective focal length f of the optical camera lens and the entrance pupil diameter EPD of the optical camera lens within a reasonable range, on the basis of ensuring a large image surface, the deflection angle ...

Embodiment 2

[0088] Such as Figure 1 to Figure 24 As shown, the optical camera lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens in order from the light incident side to the light output side along the optical axis The surface close to the exit side of the second lens is concave; the surface close to the incident side of the fifth lens is convex; wherein, there are at least three from the surface close to the incident side of the first lens to the surface close to the exit side of the fourth lens The surface is concave; the maximum value Namax of the refractive index in the first lens to the fourth lens and the second maximum value Nbmax of the refractive index in the fifth lens to the eighth lens satisfy: (Namax+Nbmax) / 2>1.6 .

[0089] Preferably, 1.6<(Namax+Nbmax) / 2<1.7.

[0090] The optical camera lens of the present application reduces the deflection angle of the incident light on the basis of ensuri...

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Abstract

The invention provides an optical camera lens. The optical camera lens comprises, sequentially from a light incident side to a light emergent side along an optical axis: a first lens,; a second lens, the surface, close to the emergent side, of the second lens being a concave surface; a third lens; a fourth lens; a fifth lens, the surface, close to the incident side, of the fifth lens being a convex surface; a sixth lens; a seventh lens; an eighth lens; wherein at least three surfaces from the surface, close to the incident side, of the first lens to the surface, close to the emergent side, of the fourth lens are concave surfaces; the effective focal length f of the optical pick-up lens and the entrance pupil diameter EPD of the optical pick-up lens meet the following condition: f / EPD < 1.3. According to the invention, the problem that the optical pick-up lens in the prior art is difficult to give consideration to large image plane, large aperture and miniaturization at the same time is solved.

Description

technical field [0001] The present invention relates to the technical field of optical imaging equipment, in particular to an optical camera lens. Background technique [0002] At present, the development of optical camera lenses is becoming more and more mature, and there are various types of optical camera lenses. Take the optical camera lens of mobile phones as an example. As people tend to use mobile phone cameras instead of traditional cameras, this forces the optical camera lens of mobile phones to It is necessary to meet the various needs of users, such as high image quality and high definition, and at the same time ensure that it can be matched with electronic photosensitive elements. Some mobile phone manufacturers have put forward higher requirements for the performance of all aspects of the optical camera lens design process, such as the need to meet the large image area, large aperture, and at the same time ensure miniaturization, but the existing optical camera ...

Claims

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Application Information

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IPC IPC(8): G02B13/18G03B30/00
CPCG02B13/0045G03B30/00G02B13/18G02B13/06G02B13/00
Inventor 吕赛锋何旦姚嘉诚戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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