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Optical imaging lens group

An optical imaging lens and imaging surface technology, applied in optics, optical components, instruments, etc., can solve problems such as unsatisfactory photographic lens modules, achieve high-quality resolution, reduce lens volume, and reduce sensitivity

Active Publication Date: 2012-05-23
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional miniaturized photographic lenses mounted on portable electronic products, as shown in US Patent No. 7,365,920, mostly use a four-piece lens structure. However, due to smart phones (Smart Phone) and PDA (Personal Digital Assistant) The popularity of high-end mobile devices has led to the rapid increase in pixel and imaging quality of miniaturized photographic lenses. The conventional four-piece lens group will not be able to meet higher-end photographic lens modules. In addition, electronic products continue to improve The trend of performance and thinning is developing, so there is an urgent need for an optical imaging lens group that is suitable for thin, light and portable electronic products, has good imaging quality and does not make the total length of the lens too long

Method used

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Examples

Experimental program
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no. 1 example 》

[0122] Please refer to the first embodiment of the present invention Figure 1A , please refer to the aberration curve of the first embodiment Figure 1B . The optical imaging lens group of the first embodiment is mainly composed of five lenses, which include sequentially from the object side to the image side:

[0123] 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 ;

[0124] 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 ;

[0125] A third lens 130 with negative refractive power, its object-side surface 131 is concave and image-side surface 132 is convex, its material is plastic, the object...

no. 2 example 》

[0155] Please refer to 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 group of the second embodiment is mainly composed of five lenses, which include sequentially from the object side to the image side:

[0156] A first lens 210 with positive refractive power, its object side surface 211 is convex and image side surface 212 is concave, its material is plastic, the object side surface 211 and image side surface 212 of the first lens 210 are both aspherical ;

[0157] A second lens 220 with negative refractive power, its object side surface 221 is convex and image side surface 222 is concave, its material is plastic, the object side surface 221 and image side surface 222 of the second lens 220 are both aspherical ;

[0158] A third lens 230 with negative refractive power, its object side surface 231 is concave and image side surface 232 is convex, its materia...

no. 3 example 》

[0182] Please refer to 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 group of the third embodiment is mainly composed of five lenses, which include sequentially from the object side to the image side:

[0183] A first lens 310 with positive refractive power, its object side surface 311 is convex and image side surface 312 is concave, its material is plastic, the object side surface 311 and image side surface 312 of the first lens 310 are both aspherical ;

[0184] A second lens 320 with negative refractive power, its object side surface 321 and image side surface 322 are concave, its material is plastic, the object side surface 321 and image side surface 322 of the second lens 320 are both aspherical ;

[0185] A third lens 330 with negative refractive power, its object side surface 331 is convex and image side surface 332 is concave, its material is plastic...

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Abstract

The invention discloses an optical imaging lens group, comprising five lenses of refractive power which consist of a first lens, a second lens, a third lens, a fourth lens and a fifth lens in sequence from an object side to an image side, wherein the first lens has positive refractive power, and the surface of the object side of the first lens adopts a convex surface; the second lens has negative refractive power; the third lens has negative refractive power; the fourth lens has negative refractive power, and at least one of the surfaces of the object side and the image side of the fourth lens adopts a non-spherical surface; and the surface of the image side of the fifth lens adopts a concave surface, at least one of the surfaces of the object side and the image side of the fifth lens adopts the non-spherical surface, and the fifth lens is made of plastic. With the configuration mode of the optical imaging lens group, the sensitivity of the optical system and the lens size can be reduced, aberration and astigmatism of the system can be effectively corrected, and resolving power with high quality can be obtained.

Description

technical field [0001] The invention relates to an optical imaging lens group; in particular, it relates to a miniaturized optical imaging lens group applied to electronic products. Background technique [0002] In recent years, with the rise of portable electronic products with photographic functions, the demand for miniaturized photographic lenses has increased day by day, and the photosensitive element of general photographic lenses is nothing more than a charge coupled device (CCD) or complementary There are two types of Complementary Metal-Oxide Semiconductor Sensor (CMOSSensor), and with the advancement of semiconductor process technology, the pixel size of the photosensitive element is reduced, and the miniaturized photographic lens is gradually developing into the high-pixel field. Therefore, for imaging Quality requirements are also increasing. [0003] Traditional miniaturized photographic lenses mounted on portable electronic products, as shown in US Patent No. 7...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/00G02B13/22G02B1/04
Inventor 蔡宗翰黄歆璇
Owner LARGAN PRECISION
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