Optical lens system

An optical lens and lens technology, applied in the direction of optics, lenses, optical components, etc., can solve problems such as unsatisfactory photographic lens modules, and achieve the effects of reducing sensitivity, high resolution, and reducing the size of the lens

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 adopt a four-piece lens structure. The prevalence of mobile devices has led to the rapid increase in pixel and imaging quality of miniaturized photographic lenses. The existing four-piece lens group will not be able to meet the requirements of higher-end photographic lens modules. In addition, electronic products continue to improve their performance. And the trend of thinning and thinning is developing, so there is an urgent need for an optical lens for imaging that is suitable for thin and light, portable electronic products, has good image quality and does not make the total length of the lens too long

Method used

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Examples

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no. 1 example 》

[0109] 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 lens system of the first embodiment is mainly composed of five lenses, which sequentially include from the object side to the image side:

[0110] 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 ;

[0111] A second lens 120 with negative refractive power, its object-side surface 121 and image-side surface 122 are concave, its material is plastic, the object-side surface 121 and image-side surface 122 of the second lens 120 are both aspherical ;

[0112] A third lens 130 with positive refractive power, its object-side surface 131 and image-side surface 132 are convex, its ...

no. 2 example 》

[0142] 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 lens system of the second embodiment is mainly composed of five lenses, which sequentially include from the object side to the image side:

[0143] 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 ;

[0144] 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 ;

[0145] A third lens 230 with positive refractive power, its object-side surface 231 and image-side surface 232 are convex, ...

no. 3 example 》

[0169] 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 lens system of the third embodiment is mainly composed of five lenses, which sequentially include from the object side to the image side:

[0170] 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 ;

[0171] 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 ;

[0172] A third lens 330 with positive refractive power, its object-side surface 331 and image-side surface 332 are c...

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Abstract

The invention provides an optical lens system that comprises a first lens, a second lens, a third lens, a fourth lens, and a fifth lens from an object side to an image side in order. The first lens has positive refractive power and the object side surface of the first lens is a convex surface; the second lens has negative refractive power; the third lens has positive refractive power and the object side surface of the third lens is a convex surface; and the image side surface of the fifth lens is a recessed surface, the object side surface and the image side surface of the fifth lens are aspheric surfaces, and at leas one inflection point is arranged on the image side surface of the fifth lens. Therefore, according to the above-mentioned configuration mode of the lens set, a camera lens volume can be effectively reduced; sensitiveness of an optical system can be reduced; and high image interpreting power can be obtained.

Description

technical field [0001] The invention relates to an optical lens system; in particular, it relates to a miniaturized optical lens system applied to portable 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 elements of general photographic lenses are nothing more than photosensitive coupling devices (Charge Coupled Device, CCD) or complementary oxide There are two types of metal semiconductor elements (Complementary Metal-Oxide Semiconductor Sensor, CMOSSensor), and with the advancement of semiconductor technology, the pixel size of the photosensitive element is reduced, and the miniaturized photographic lens is gradually developing into the high-pixel field. The requirements are also increasing. [0003] Traditional miniaturized photographic lenses mounted on portable electronic products...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/22G02B1/04G02B3/02
Inventor 汤相岐蔡宗翰黄歆璇
Owner LARGAN PRECISION
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