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Image capturing lens system

A lens system and lens technology, applied in optics, instruments, optical components, etc., can solve the problems of difficult balance between imaging quality and total system length, unsatisfactory, long total system length, etc.

Active Publication Date: 2013-09-18
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although such a lens type can correct most of the aberrations produced by the optical system, the total length of the system is too long, which is not ideal
[0004] In view of this, it is always difficult to strike a balance between the imaging quality and the total length of the system. Therefore, there is an urgent need in the industry for an optical lens that has good imaging quality and does not make the total length of the lens too long, and is suitable for thin, light and portable electronic products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] For the first embodiment of the present invention, please refer to the appended Figure 1A , please refer to the appendix for the aberration curve of the first embodiment Figure 1B . The imaging lens system of the first embodiment is mainly composed of three non-cemented lenses, which include sequentially from the object side to the image side:

[0101] A first lens 110 with positive refractive power, its object side 111 is a convex surface and its image side 112 is a concave surface, its material is plastic, and the object side 111 and image side 112 of the first lens 110 are all aspherical surfaces;

[0102] A second lens 120 with negative refractive power, the object side 121 is concave and the image side 122 is convex, and its material is plastic, and the object side 121 and the image side 122 of the second lens 120 are both aspherical; and

[0103] A third lens 130 with negative refractive power, its object side 131 is a convex surface and its image side 132 is c...

Embodiment 2

[0134] For the second embodiment of the present invention, please refer to the appended Figure 2A, for the aberration curve of the second embodiment, please refer to the attached Figure 2B picture. The image pickup lens system of the second embodiment is mainly composed of three non-cemented lenses, which include sequentially from the object side to the image side:

[0135] A first lens 210 with positive refractive power, its object side 211 is convex and image side 212 is concave, its material is plastic, and the object side 211 and image side 212 of the first lens 210 are all aspherical surfaces;

[0136] A second lens 220 with negative refractive power, its object side 221 is concave and image side 222 is convex, its material is plastic, and the object side 221 and image side 222 of the second lens 220 are both aspherical; and

[0137] A third lens 230 with negative refractive power, its object side 231 is a convex surface and its image side 232 is a concave surface, an...

Embodiment 3

[0148] For the third embodiment of the present invention, please refer to the appended Figure 3A , for the aberration curve of the third embodiment, please refer to the attached Figure 3B . The image pickup lens system of the third embodiment is mainly composed of three non-cemented lenses, which include sequentially from the object side to the image side:

[0149] A first lens 310 with positive refractive power, its object side 311 is convex and image side 312 is concave, its material is plastic, and the object side 311 and image side 312 of the first lens 310 are all aspherical surfaces;

[0150] A second lens 320 with negative refractive power, its object side 321 is concave and image side 322 is convex, its material is plastic, the object side 321 and image side 322 of the second lens 320 are all aspheric; and

[0151] A third lens 330 with positive refractive power, its object side 331 is a convex surface and its image side 332 is a concave surface, and its material i...

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Abstract

This invention provides an image capturing lens system comprising three non-cemented lens elements with refractive power: a first lens element with positive refractive power having a convex object-side surface, and both the object-side and image-side surfaces being aspheric; a plastic second lens element with negative refractive power having a concave object-side surface and a convex image-side surface, and both the object-side and image-side surfaces being aspheric; and a plastic third lens element having a convex object-side surface and a concave image-side surface, and both the object-side and image-side surfaces being aspheric. By such arrangement, the space of the image capturing lens system can be allocated much more properly and thereby an image capturing lens system with shorter total track length can be obtained while retaining superior image quality.

Description

technical field [0001] The present invention relates to an image pickup lens system, in particular, to an image pickup lens system applied to miniaturized electronic products and their three-dimensional (3D) imaging applications. Background technique [0002] In recent years, with the rise of portable electronic products with photographic functions, the market demand for miniaturized photographic lenses has been increasing. The photosensitive element of a general photographic lens is nothing more than a photosensitive coupled device (Charge Coupled Device, CCD) or a complementary metal oxide semiconductor element (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor). With the improvement of semiconductor process technology, the pixel size of the photosensitive element is reduced, which drives the development of miniaturized photographic lenses to the high-pixel field, and the requirements for imaging quality are also increasing. [0003] The common miniaturized lens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06G02B13/22G02B1/04G02B1/00
CPCG02B13/0035G02B13/18
Inventor 谢东益蔡宗翰陈纬彧
Owner LARGAN PRECISION
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