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imaging lens

A technology of imaging lens and imaging surface, which is applied in the field of imaging lens to achieve the effect of good optical performance

Active Publication Date: 2020-10-20
SINTAI OPTICAL SHENZHEN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With different application requirements, today's imaging lenses sometimes need to have high resolution and the ability to resist environmental temperature changes, and sometimes need to have the characteristics of high image height and large viewing angle. Existing imaging lenses can no longer meet today's needs. Another imaging lens with a new structure is needed to meet the high resolution and the ability to resist environmental temperature changes or the characteristics of high image height and large viewing angle

Method used

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Embodiment Construction

[0019] see figure 1 , figure 1 is a schematic diagram of the lens configuration of the first embodiment of the imaging lens according to the present invention. The imaging lens 1 sequentially includes a first lens group L1 from the object side to the image side along the optical axis OA1 G1 , the second lens group L1 G2 And filter OF1. First lens group L1 G1 The first lens L11 , the second lens L12 , the third lens L13 , the aperture ST1 and the fourth lens L14 are sequentially included from the object side to the image side along the optical axis OA1 . Second lens group L1 G2 A first lens unit L15 , a second lens unit L16 , a third lens unit L17 , and a fourth lens unit L18 are sequentially included from the object side to the image side along the optical axis OA1 . During imaging, the light from the object side is finally imaged on the imaging surface IMA1. The first lens L11 is a crescent lens with negative refractive power and is made of glass material. The object s...

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Abstract

The invention provides an imaging lens. The image lens comprises a first lens group and a second lens group successively from an object side and an image side along an optical axis. The first lens group comprises a first lens, a second lens, a third lens and a fourth lens successively from the object side to the image side along the optical axis. The first lens has the negative refractive power. The second lens has the negative refractive power. The third lens and the fourth lens have the positive refractive power. The second lens comprises a first lens unit, a second lens unit, a third lens unit and a fourth lens unit successively from the object side to the image side along the optical axis. The first lens unit has the negative refractive power. The second lens unit and the third lens unit have the refractive power. The fourth lens unit has the positive refractive power.

Description

technical field [0001] The invention relates to an imaging lens. Background technique [0002] With different application requirements, today's imaging lenses sometimes need to have high resolution and the ability to resist environmental temperature changes, and sometimes need to have the characteristics of high image height and large viewing angle. Existing imaging lenses can no longer meet today's needs. Another imaging lens with a new structure is needed to satisfy the ability of high resolution and resistance to environmental temperature changes or the characteristics of high image height and large viewing angle. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an imaging lens for the above-mentioned defects in the prior art, which has the ability of high resolution and resistance to environmental temperature changes or has the characteristics of high image height and large viewing angle, but still Has good o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/06G02B13/18
Inventor 陈柏瑜叶精中
Owner SINTAI OPTICAL SHENZHEN CO LTD