Optical lens for photograph shooting

An optical lens and lens technology, applied in optics, optical components, instruments, etc., can solve problems such as increased system sensitivity, difficulty in controlling yield in manufacturing, and manufacturing difficulties, achieving high resolution, reducing lens size, and reducing sensitivity. degree of effect

Active Publication Date: 2013-01-30
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] It is common to see miniaturized photographic optical lenses with high resolution, which mostly use an optical system with a front aperture and four lenses. Among them, the first lens and the second lens are usually bonded with two glass spherical lenses to form a doublet lens ( Doublet Lens) to eliminate chromatic aberration, as shown in U.S. Patent No. 7,365,920, but this method has its disadvantages. First, too many spherical lens configurations make the system lack of freedom, which makes the total optical length

Method used

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  • Optical lens for photograph shooting
  • Optical lens for photograph shooting
  • Optical lens for photograph shooting

Examples

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no. 1 example

[0120] Please refer to the first embodiment of the present invention figure 1 , for the aberration curve of the first embodiment, please refer to figure 2 . The photographic optical lens of the first embodiment is mainly composed of four lenses, which include sequentially from the object side to the image side:

[0121] 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 ;

[0122] 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 ;

[0123] A third lens 130 with positive refractive power, its object side surface 131 is concave and image side surface 132 is convex, its material is plastic, the obje...

no. 2 example

[0151] Please refer to the second embodiment of the present invention image 3 , for the aberration curve of the second embodiment, please refer to Figure 4 . The photographic optical lens of the second embodiment is mainly composed of four lenses, which include sequentially from the object side to the image side:

[0152] 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 ;

[0153] 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 ;

[0154] A third lens 330 with positive refractive power, its object side surface 331 is concave and image side surface 332 is convex, its material is plastic, the objec...

no. 3 example

[0176] Please refer to the third embodiment of the present invention Figure 5 , for the aberration curve of the third embodiment, please refer to Image 6 . The photographic optical lens of the third embodiment is mainly composed of four lenses, which include sequentially from the object side to the image side:

[0177] A first lens 510 with positive refractive power, its object-side surface 511 and image-side surface 512 are convex, its material is plastic, the object-side surface 511 and image-side surface 512 of the first lens 510 are both aspherical ;

[0178] A second lens 520 with negative refractive power, its object-side surface 521 and image-side surface 522 are concave, its material is plastic, the object-side surface 521 and image-side surface 522 of the second lens 520 are both aspherical ;

[0179] A third lens 530 with positive refractive power, its object side surface 531 is concave and image side surface 532 is convex, its material is plastic, the object s...

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Abstract

The invention discloses an optical lens for photograph shooting. The optical lens comprises a first lens with positive inflectional force, a second lens with negative inflectional force, a third lens with positive inflectional force and a fourth lens with negative inflectional force which are arranged from the object side to the image side in sequence, wherein the object-side surface of the first lens is convex; the image-side surface of the second lens is concave; and the image-side surface of the fourth lens is concave, and the surfaces on the object-side surface and the image-side surface of the fourth lens are both aspheric. The optical lens for photograph shooting is further provided with an aperture and an electronic photosensitive element, wherein the aperture is arranged between the first lens and the second lens, and the electronic photosensitive element is arranged at the position of an imaging surface and used for enabling an object to be shot to form an image. The optical lens for photograph shooting is provided with four lenses with inflectional force. By means of the configuration mode of a lens group, the size of the lens can be effectively reduced, sensitiveness of an optical system is reduced, and large resolution power can be obtained.

Description

[0001] The present invention is a divisional application with an application date of May 18, 2010, an application number of 201010182932.4, and an invention name of a photographic optical lens. technical field [0002] The invention relates to a photographic optical lens, in particular to a miniaturized photographic optical lens that can reduce the sensitivity of the optical system and has high resolution. Background technique [0003] It is common to see miniaturized photographic optical lenses with high resolution, which mostly use an optical system with a front aperture and four lenses. Among them, the first lens and the second lens are usually bonded with two glass spherical lenses to form a doublet lens ( Doublet Lens) to eliminate chromatic aberration, as shown in U.S. Patent No. 7,365,920, but this method has its disadvantages. First, too many spherical lens configurations make the system lack of freedom, which makes the total optical length of the system difficult to ...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/22
Inventor 陈俊杉汤相岐蔡宗翰
Owner LARGAN PRECISION
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