Optical image capturing lens

An optical and lens technology, applied in the field of miniaturized optical imaging lenses, can solve the problems of difficult manufacturing, difficult glass lens bonding process, insufficient system freedom, etc., to reduce the size of the lens, increase the field of view, high The effect of resolution

Active Publication Date: 2012-04-04
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has its disadvantages. First, too many glass spherical mirror configurations make the system less free, which makes it difficult to shorten the total length of the system. Second, the glass lens bonding process is not easy, which is easy to cause difficulties in manufacturing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0111] Please refer to the schematic diagram of the optical system of the first embodiment of the present invention Figure 1A , for the aberration curve of the first embodiment, please refer to Figure 1B . The optical imaging lens of the first embodiment is mainly composed of four lenses, which include sequentially from the object side to the image side:

[0112] A first lens 110 with positive refractive power, its object-side surface 111 and image-side surface 112 are convex, its material is plastic, the object-side surface 111 and image-side surface 112 of the first lens 110 are both aspherical ;

[0113]A second lens 120 with negative refractive power, its object-side surface 121 and image-side surface 122 are concave, its material is plastic, and the object-side surface 121 and image-side surface 122 of the second lens 120 are both aspherical ;

[0114] A third lens 130 with positive refractive power, its object side surface 131 is concave and image side surface 132 i...

no. 2 example

[0139] Please refer to the schematic diagram of the optical system of the second embodiment of the present invention Figure 2A , for the aberration curve of the second embodiment, please refer to Figure 2B . The optical imaging lens of the second embodiment is mainly composed of four lenses, which include sequentially from the object side to the image side:

[0140] A first lens 210 with positive refractive power, its object-side surface 211 and image-side surface 212 are convex, its material is plastic, the object-side surface 211 and image-side surface 212 of the first lens 210 are both aspherical ;

[0141] A second lens 220 with negative refractive power, its object-side surface 221 and image-side surface 222 are concave, its material is plastic, the object-side surface 221 and image-side surface 222 of the second lens 220 are both aspherical ;

[0142] A third lens 230 with positive refractive power, its object side surface 231 is concave and image side surface 232 ...

no. 3 example

[0161] Please refer to the schematic diagram of the optical system of the third embodiment of the present invention Figure 3A , for the aberration curve of the third embodiment, please refer to Figure 3B . The optical imaging lens of the third embodiment is mainly composed of four lenses, which sequentially include from the object side to the image side:

[0162] A first lens 310 with positive refractive power, its object-side surface 311 and image-side surface 312 are convex, its material is plastic, the object-side surface 311 and image-side surface 312 of the first lens 310 are both aspherical ;

[0163] A second lens 320 with negative refractive power, its object side surface 321 is convex and image side surface 322 is concave, its material is plastic, the object side surface 321 and image side surface 322 of the second lens 320 are both aspherical ;

[0164] A third lens 330 with positive refractive power, its object side surface 331 is concave and image side surfac...

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Abstract

The invention provides an optical image capturing lens, which from an object side to an image side in turn comprises a first lens with positive flexion force, a second lens with negative flexion force, a third lens which has an object side surface and an image side surface that are both non spherical surfaces, and a fourth lens which has an image side surface that is a concave surface, has an object side surface and the image side surface that are both non spherical surfaces, and has at least one inflection point disposed on at least one of the object side surface and the image side surface. The optical image capturing lens is additionally provided with an aperture and an electronic light sensing element for imaging of captured object; the aperture is disposed between the captured object and the second lens; and the electronic light sensing element is disposed on the imaging surface.

Description

technical field [0001] The invention relates to an optical imaging lens; in particular, it relates to a miniaturized optical imaging lens applied to electronic products. Background technique [0002] In recent years, with the rise of portable electronic products with camera functions, the demand for miniaturized camera lenses has been increasing. The photosensitive element of a general camera lens is nothing more than a charge coupled device (CCD) or a complementary metal-oxide semiconductor sensor (CMOS Sensor). Moreover, due to advances in process technology, the pixel size of the photosensitive element is reduced, and the miniaturized camera lens is gradually developing into the high-pixel field. Therefore, the requirements for imaging quality are also increasing. [0003] Traditional miniaturized camera lenses mounted on portable electronic products mostly adopt a three-piece lens structure. The lens system is sequentially composed of a first lens with positive refracti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/00G02B13/22
Inventor 汤相岐谢东益陈俊杉蔡宗翰
Owner LARGAN PRECISION
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