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Imaging lens

An imaging lens and imaging surface technology, applied in the field of optical lenses

Inactive Publication Date: 2016-06-01
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current imaging lens cannot meet the above two requirements at the same time.

Method used

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Experimental program
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Embodiment Construction

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0013] see figure 1 , an imaging lens 100 provided for an embodiment of the present invention, includes in sequence from the object end to the image end along the optical axis direction: an aperture 101, a first lens 10 with positive diopter brightness, a first lens 10 with negative diopter brightness Second lens 20, a third lens 30 with positive diopter brightness, a fourth lens 40 with positive diopter brightness, a fifth lens 50 with negative diopter brightness, an infrared filter 60, and an imaging surface 61 . The infrared filter 60 is made of glass. When taking an image, light first passes through the aperture 101, the first lens 10, the second lens 20, the third lens 30, the fourth lens 40, the fifth lens 50 and the The infrared filter 60 is imaged on the imaging surface 61 .

[0014] The first lens 10 includes a first object end surface S11 and a ...

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Abstract

The invention provides an imaging lens. The imaging lens includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially distributed along the direction of the optical axis of the imaging lens from an object end to an image end, wherein the first lens, the third lens and the fourth lens have positive refractive brightness, and the second lens and the fifth lens have negative refractive brightness. The imaging lens meets the following conditional expressions: R1F>0, R1R<0, R2F>R2R>0, R3F>0, R3R<0, R4F<0, R4R<0, R5F<0, and R5R>0, wherein R1F, R2F, R3F, R4F and R5F are the curvature radiuses of the object-end surfaces of the first lens, the second lens, the third lens, the fourth lens and the fifth lens, and R1R, R2R, R3R, R4R and R5R are the curvature radiuses of image-end surfaces of the first lens, the second lens, the third lens, the fourth lens and the fifth lens.

Description

technical field [0001] The invention relates to the field of optical lenses, in particular to an imaging lens. Background technique [0002] In the past, smartphones generally included imaging lenses, and consumers’ requirements for imaging lenses are gradually increasing. Not only do they hope that imaging lenses have high resolution, but they also hope that imaging lenses can be thinner and lighter to meet the requirements of low height. The low height means that the distance from the first surface of the lens to the imaging surface (that is, the total length of the imaging system) is short. But the current imaging lens cannot meet the above two requirements at the same time. Contents of the invention [0003] In view of this, it is necessary to provide an imaging lens that satisfies conditions such as high resolution and low height. [0004] An imaging lens, comprising in sequence from the object end to the image end along its optical axis: a first lens with positive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
Inventor 陈伍丰许德伦邢正宏
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD