Image-capturing lens

A lens and lens technology, applied in the field of imaging lens, can solve the problems of complex manufacturing process, high development cost of aspheric lens, and low product yield rate

Inactive Publication Date: 2011-06-29
FOSHAN PREMIER SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development cost of aspheric lens is high, the manufacturing process is complicated, and the yield rate of the product is low

Method used

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Examples

Experimental program
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Embodiment Construction

[0021] see figure 1 , is a schematic structural diagram of the imaging lens 100 in a preferred embodiment of the present invention. The imaging lens 100 includes a first lens 110 with negative refractive power, a second lens 120 with negative refractive power, a third lens 130 with positive refractive power, and a third lens 130 with negative refractive power from the object side to the image side. The fourth lens 140, the fifth lens 150 with positive power, and the sixth lens 150 with positive power.

[0022] The object side of the first lens 110 facing the object side is a first surface S1 , and the image side facing the image side is a second surface S2 . The first surface S1 is a spherical surface convex toward the object side, and the second surface S2 is a spherical surface concave relative to the image side.

[0023] The object side of the second lens 120 facing the object side is the third surface S3, and the image side facing the image side is the fourth surface S4....

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PUM

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Abstract

The invention provides an image-capturing lens. The lens comprises a plurality of lenses, wherein, the lenses comprise a first lens with negative power, a second lens with negative power, a third lens with positive power, a fourth lens with negative power, a fifth lens with positive power and a sixth lens with positive power which are sequentially arranged from an object side to an image side; and each lens comprises an object side face arranged towards the object side and an image side face arranged towards the image side. The image-capturing lens meets the following conditional expressions: (1) R1 is more than 8mm and less than 12mm; (2) R2 is more than 1mm and less than 2mm; (3) Nd1 is more than 1.8 and less than 2; (4) vd1 is more than 30 and less than 50; (5) D1 is more than 0.8mm and less than 1.2mm; and (6) -f1 is more than 2 and less than 3, wherein, R1 is curvature radius of the object side face of the first lens; R2 is the curvature radius of the image side face of the first lens; Nd1 is the refractive index of the first lens; vd1 is the Abbe number of the first lens; D1 is the center thickness of the first lens; and f1 is the focal length of the first lens.

Description

technical field [0001] The invention relates to imaging technology, in particular to an imaging lens. Background technique [0002] With the development of imaging technology, more and more vehicles are equipped with imaging lenses to monitor the surrounding environment of the vehicle, so as to ensure driving safety. The imaging lens set on the vehicle is characterized by a large field of view and a small size. In order to achieve a small size while ensuring that the imaging lens has a sufficient field of view, designers often use aspheric lenses to achieve this. The development cost of the aspherical lens is high, the manufacturing process is complicated, and the yield rate of the product is low. Contents of the invention [0003] In view of this, it is necessary to provide an imaging lens with small size, large field of view and easy manufacture. [0004] An imaging lens comprising a plurality of lenses, the plurality of lenses are sequentially from the object side to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/06
Inventor 吴常青罗阳成赵远
Owner FOSHAN PREMIER SCI & TECH CO LTD
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