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Optical image capturing system

An optical imaging system and imaging surface technology, applied in optics, optical components, instruments, etc., can solve problems such as poor imaging quality

Pending Publication Date: 2022-06-03
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide an optical imaging system to solve the problem of poor imaging quality in optical imaging systems in the prior art

Method used

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Embodiment 1

[0061] like Figure 1 to Figure 40 As shown, the optical imaging system sequentially includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from the object side to the image side. The first lens has optical power; the second lens has optical power; the third lens has optical power; the fourth lens has optical power, and the surface of the fourth lens near the optical axis of the object side is convex; the fifth lens has Optical power, the surface of the fifth lens near the optical axis of the image side is convex; the sixth lens has negative power, and the surface of the sixth lens near the optical axis of the object side is concave; among them, the aperture number Fno of the optical imaging system Satisfy: Fno<1.7; between the effective focal length f5 of the fifth lens and semi-Fov, which is half of the maximum field of view of the optical imaging system: 4mm<f5*tan(semi-Fov)<6.5mm; the first lens is on the object side The distance ...

Embodiment 2

[0078] like Figure 1 to Figure 40 As shown, the optical imaging system sequentially includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from the object side to the image side. The first lens has optical power; the second lens has optical power; the third lens has optical power; the fourth lens has optical power, and the surface of the fourth lens near the optical axis of the object side is convex; the fifth lens has Optical power, the surface of the fifth lens near the optical axis of the image side is convex; the sixth lens has negative power, and the surface of the sixth lens near the optical axis of the object side is concave; among them, the aperture number Fno of the optical imaging system Satisfy between the half of the diagonal length of the effective pixel area on the imaging surface ImgH: 7.5mm<Fno*ImgH<9mm; the effective focal length f5 of the fifth lens and the half semi-Fov of the maximum field of view of the optical im...

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Abstract

The invention provides an optical image capturing system comprising, in order from an object side to an image side: a first lens having focal power; the second lens has focal power; the third lens has focal power; the surface, near the optical axis of the object side, of the fourth lens is a convex surface; the fifth lens has focal power, and the surface, near the optical axis of the image side, of the fifth lens is a convex surface; the sixth lens has negative focal power, and the surface, near the optical axis of the object side, of the sixth lens is a concave surface; wherein the aperture number Fno of the optical imaging system meets the following formula: Fnolt; 1.7, 1.7; the effective focal length f5 of the fifth lens and the half of semi-Fov of the maximum field angle of the optical imaging system meet the following condition: 4mmlt; f < 5 > * tan (semi-Fov) lt; the thickness is 6.5 mm; the distance TTL from the surface of the first lens near the optical axis of the object side to the imaging surface of the optical imaging system along the optical axis and the air gap T56 between the fifth lens and the sixth lens on the optical axis meet the following conditions: 4lt; tTL / T56lt; 6. The problem that an optical imaging system in the prior art is poor in imaging quality is solved.

Description

technical field [0001] The present invention relates to the technical field of optical imaging devices, and in particular, to an optical imaging system. Background technique [0002] With the development of mobile terminals, people's reliance on mobile terminals is getting higher and higher, and at the same time, people have higher and higher requirements for lenses mounted on mobile terminals. Users hope that the imaging of mobile terminals can be clearer and at the same time Clear imaging can be achieved in different environments, which leads to the fact that the existing imaging system cannot meet the image quality requirements of the mobile terminal. [0003] That is to say, the optical imaging system in the prior art has the problem of poor imaging quality. SUMMARY OF THE INVENTION [0004] The main purpose of the present invention is to provide an optical imaging system to solve the problem of poor imaging quality in the optical imaging system in the prior art. [...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/0045
Inventor 娄琪琪黄林戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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