Optical Lenses for Photography

An optical lens and lens technology, applied in optics, optical components, instruments, etc., can solve the problems of increased system sensitivity, limited aberration correction capability, and difficulty in miniaturizing the total length of the lens, achieving good imaging quality and reducing sensitivity. degree, the effect of shortening the overall length of the lens

Active Publication Date: 2011-12-28
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing miniaturized photographic lenses, in order to reduce manufacturing costs, mostly adopt two-piece lens structure. For example, U.S. Patent No. 7,525,741 discloses a photographic lens with a two-piece lens structure. The poor correction ability is limited and cannot meet the needs of higher-end camera modules, but the configuration of too many lenses will make the total length of the lens difficult to achieve miniaturization
[0004] In order to obtain good imaging quality and have the characteristics of miniaturization, it is a feasible solution to configure an imaging optical s

Method used

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  • Optical Lenses for Photography
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Examples

Experimental program
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no. 1 example

[0097] Please refer to the first embodiment of the present invention Figure 1A , for the aberration curve of the first embodiment, please refer to Figure 1B . The photographic optical lens of the first embodiment is mainly composed of three lenses, which include sequentially from the object side to the image side:

[0098] A first lens 110 with positive refractive power, its object-side surface 111 is convex and image-side surface 112 is concave, its material is plastic, the object-side surface 111 and image-side surface 112 of the first lens 110 are both aspherical ;

[0099] A second lens 120 with positive refractive power, its object side surface 121 is concave and image side surface 122 is convex, its material is plastic, the object side surface 121 and image side surface 122 of the second lens 120 are both aspherical ;and

[0100] A third lens 130 with positive refractive power, its object-side surface 131 is convex and image-side surface 132 is concave, its material...

no. 2 example

[0126] 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 photographic optical lens of the second embodiment is mainly composed of three lenses, which include sequentially from the object side to the image side:

[0127] 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 ;

[0128] A second lens 220 with positive refractive power, its object-side surface 221 is concave and image-side surface 222 is convex, its material is plastic, the object-side surface 221 and image-side surface 222 of the second lens 220 are both aspherical ;and

[0129] A third lens 230 with positive refractive power, its object side surface 231 is convex and image side surface 232 is concave, its mate...

no. 3 example

[0148] 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 photographic optical lens of the third embodiment is mainly composed of three lenses, which sequentially include from the object side to the image side:

[0149] 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 ;

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

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

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Abstract

The invention discloses an optical lens for photographing, which sequentially comprises a first lens, a second lens and a third lens from an objective side to an image side, wherein the first lens has a positive flexion force, and the surface of the objective side of the first lens is a convex surface; the second lens has a positive flexion force, and the surface of the image side of the second lens is a convex surface, the third lens has a positive flexion force, the surface of the objective side of the third lens is a convex surface and the surface of the image side of the third lens is a concave surface, and both the surface of the objective side and the surface of the image side of the third lens are non-spherical surfaces; and at least surface of the surface of the objective side andthe surface of the image side of the third lens is provided with at least one inflexion point; the optical lens for photographing is additionally provided with a diaphragm which is arranged between aphotographed object and the second lens; and in the optical lens for photographing, the three lenses with the flexion force are comprised. By adoption of the lens group allocation mode, the lens volume can be effectively reduced, the sensitivity of the optical system is reduced, and higher image resolution can be obtained.

Description

technical field [0001] The invention relates to an optical lens for photography, in particular to a miniaturized optical lens for photography used in electronic products. Background technique [0002] In recent years, with the rise of imaging modules, the demand for miniaturized photographic lenses has been increasing, and the photosensitive elements of general photographic lenses are nothing more than charge coupled devices (CCD) or complementary metal oxide semiconductor elements. (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor) two types, and with the advancement of process technology, the pixel size of the photosensitive element is reduced. In addition, today's electronic products are developing with good functions and thin, light and small appearance. Therefore, Miniaturized photographic lenses with good imaging quality have become the mainstream in the current market. [0003] Existing miniaturized photographic lenses, in order to reduce manufacturing cos...

Claims

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Application Information

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IPC IPC(8): G02B13/18G02B13/00
Inventor 汤相岐谢东益黄歆璇
Owner LARGAN PRECISION
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