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Photographing camera, image capture device and electronic device

A photographic lens and lens technology, which is applied in the fields of imaging devices, electronic devices, and photographic lenses, can solve the problems of improving imaging quality, shrinking the pixel size of image sensing components, and being unable to meet the needs of photographic lens modules, etc., to achieve the effect of maintaining miniaturization

Inactive Publication Date: 2020-03-03
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional miniaturized camera lenses mounted on portable electronic products mostly use a three-piece lens system. The shrinkage makes the system's requirements for imaging quality even higher, and the known three-piece lens group can no longer meet the higher-level photographic lens modules

Method used

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  • Photographing camera, image capture device and electronic device
  • Photographing camera, image capture device and electronic device
  • Photographing camera, image capture device and electronic device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0064] see Figure 1 to Figure 4 , from the object side to the image side, the photographic lens 10 of the first embodiment sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and an infrared filter L5.

[0065]The first lens L1 has a positive refractive power and is made of plastic. The object side S1 is convex, and the image side S2 is concave, both of which are aspherical. The second lens L2 has negative refractive power and is made of plastic. The object side S3 is concave, and the image side S4 is convex at the optical axis and concave at the circumference, both of which are aspherical. The third lens L3 has positive refractive power and is made of plastic. The object side S5 is concave, and the image side S6 is convex at the optical axis and concave at the circumference, both of which are aspherical. The fourth lens L4 has a negative refractive power and is made of plastic. The object side S7 is convex at the optical axis and conca...

no. 2 example

[0075] see Figure 5 to Figure 8 , from the object side to the image side, the photographic lens 10 of the second embodiment sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and an infrared filter L5.

[0076] The first lens L1 has a positive refractive power and is made of plastic. The object side S1 is convex, and the image side S2 is concave, both of which are aspherical. The second lens L2 has negative refractive power and is made of plastic. The object side S3 is concave, and the image side S4 is convex, both of which are aspherical. The third lens L3 has positive refractive power and is made of plastic. The object side S5 is concave, and the image side S6 is convex at the optical axis and concave at the circumference, both of which are aspherical. The fourth lens L4 has a negative refractive power and is made of plastic. The object side S7 is convex, and the image side S8 is concave at the optical axis and convex at the circumfe...

no. 3 example

[0087] see Figure 9 to Figure 12 , from the object side to the image side, the photographic lens 10 of the third embodiment sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and an infrared filter L5.

[0088] The first lens L1 has positive refractive power and is made of plastic. The object side S1 is convex, and the image side S2 is concave, both of which are aspherical. The second lens L2 has negative refractive power and is made of plastic. The object side S3 is concave, and the image side S4 is convex, both of which are aspherical. The third lens L3 has positive refractive power and is made of plastic. The object side S5 is concave, and the image side S6 is convex at the optical axis and concave at the circumference, both of which are aspherical. The fourth lens L4 has a negative refractive power and is made of plastic. The object side S7 is convex at the optical axis and concave at the circumference, and the image side S8 is con...

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Abstract

The invention discloses a photographing camera, an image capture device and an electronic device. The photographic camera comprises a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power and a fourth lens with negative refractive power which are sequentially distributed from an object side to an image side; the objectside surface of the first lens is a convex surface; the image side surface of the first lens is a concave surface; the object side surface of the second lens is a concave surface; the object side surface of the third lens is a concave surface; the image side surface of the third lens is a convex surface at an optical axis; the object side surface of the fourth lens is a convex surface at the optical axis; the image side surface of the fourth lens is a concave surface at the optical axis; at least one surface of the fourth lens has at least one inflection point; the photographic camera satisfies the relational expression that: 1<(CT1+CT2) / CT3<1.5, wherein CT1, CT2 and CT3 are the center thicknesses of the first lens, the second lens and the third lens on the optical axis respectively. According to the photographing camera, by means of reasonable lens configuration, the miniaturization of the photographing lens is maintained while the sensitivity of the photographing lens is reduced.

Description

technical field [0001] The invention relates to optical imaging technology, in particular to a photographic lens, an imaging device and an electronic device. Background technique [0002] Traditional miniaturized camera lenses mounted on portable electronic products mostly use a three-piece lens system. The shrinkage makes the system's requirements for imaging quality higher, and the known three-piece lens group can no longer meet the higher-level photographic lens modules. Therefore, there is an urgent need for an ultra-thin optical lens for photography with good imaging quality. Contents of the invention [0003] In view of this, embodiments of the present invention provide a photographic lens, an imaging device, and an electronic device. [0004] The photographic lens according to the embodiment of the present invention sequentially includes a first lens with a positive refractive power, a second lens with a negative refractive power, a third lens with a positive refr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/004G02B13/06G02B13/18
Inventor 邹海荣刘彬彬邹金华兰宾利
Owner JIANGXI JINGCHAO OPTICAL CO LTD