Optical imaging system, image pick-up module, electronic device and automobile

An optical imaging system and image-side technology, which is applied in the fields of electronic devices, automobiles, camera modules, and optical imaging systems, can solve the problems of high cost, difficult processing of the first lens, and easy ghosting of the first lens.

Inactive Publication Date: 2020-12-11
TIANJIN OFILM OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the existing vehicle-mounted front-view lens, in order to meet the requirement of clarity, a higher requirement is placed on the degree of curvature of the first len...

Method used

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  • Optical imaging system, image pick-up module, electronic device and automobile
  • Optical imaging system, image pick-up module, electronic device and automobile
  • Optical imaging system, image pick-up module, electronic device and automobile

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0162] Please continue to see figure 1 , the optical imaging system 10 in this embodiment includes a first lens group, a second lens group, a stop STO and a third lens group in order from the object side to the image side.

[0163] The first lens group includes a first lens L1 with negative refractive power. The object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 of the first lens L1 is concave at the near optical axis.

[0164] The second lens group includes a second lens L2 with a positive refractive power and a third lens L3 with a positive refractive power in order from the object side to the image side. The object side S3 of the second lens L2 is a concave surface at the near optical axis. The image side S4 of the second lens L2 is convex at the near optical axis, the object side S5 of the third lens L3 is convex at the near optical axis, and the image side S6 of the third lens L3 is convex at the near optical axis.

[0165] The ...

no. 2 example

[0171] see image 3 , the optical imaging system 20 in this embodiment includes a first lens group, a second lens group, a stop STO and a third lens group in sequence from the object side to the image side.

[0172] The first lens group includes a first lens L1 with negative refractive power. The object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 of the first lens L1 is concave at the near optical axis.

[0173] The second lens group includes a second lens L2 with a positive refractive power and a third lens L3 with a positive refractive power in order from the object side to the image side. The object side S3 of the second lens L2 is a concave surface at the near optical axis. The image side S4 of the second lens L2 is convex at the near optical axis, the object side S5 of the third lens L3 is convex at the near optical axis, and the image side S6 of the third lens L3 is convex at the near optical axis.

[0174] The third lens group...

no. 3 example

[0180] see Figure 5 , the optical imaging system 30 in this embodiment includes a first lens group, a second lens group, a stop STO and a third lens group in order from the object side to the image side.

[0181] The first lens group includes a first lens L1 with negative refractive power. The object side S1 of the first lens L1 is concave at the near optical axis, and the image side S2 of the first lens L1 is concave at the near optical axis.

[0182] The second lens group includes a second lens L2 with a positive refractive power and a third lens L3 with a positive refractive power in order from the object side to the image side. The object side S3 of the second lens L2 is a convex surface at the near optical axis. The image side S4 of the second lens L2 is convex at the near optical axis, the object side S5 of the third lens L3 is convex at the near optical axis, and the image side S6 of the third lens L3 is convex at the near optical axis.

[0183] The third lens group i...

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Abstract

The invention discloses an optical imaging system, image pick-up module and electronic device. The optical imaging system includes a first lens group, a second lens group and a third lens group whichare distributed from an object side to an image side. The first lens group has negative refraction power and comprises at least one lens; a surface closest to the image side is concave at a position close to an optical axis. The second lens group has positive refraction power and comprises at least two lenses; the surface, closest to the image side, of the second lens group is a convex surface ata position close to the optical axis. The third lens group hasrefraction power and comprises at least three lenses; the surface, closest to the object side, of the third lens group is a concave surface at a position close to the optical axis; the surface, closest to the image side, of the third lens group is a convex surface at a position close to the optical axis. The optical imaging system satisfies the following conditional expression: SD2/R2<1. The optical imaging system can maintain good optical performance while maintaining small size and light weight, and can well capture details of a photographed object.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to an optical imaging system, a camera module, an electronic device and an automobile. Background technique [0002] With the development of the vehicle industry, the technical requirements for vehicle lenses such as front view, automatic cruise control, driving recorder, and reversing images are getting higher and higher, especially the vehicle front view lens, which is installed in front of the vehicle to make driving Personnel can intuitively see the obstacles in front of the car. [0003] At present, in the existing vehicle-mounted front-view lens, in order to meet the requirement of clarity, a higher requirement is placed on the degree of curvature of the first lens (the lens closest to the object side), which will make the processing of the first lens difficult. Large, high cost, and the processed first lens is also prone to ghosting problems during use. Contents of...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/06
CPCG02B13/0015G02B13/06
Inventor 刘志利杨懿周芮刘秀蔡雄宇
Owner TIANJIN OFILM OPTO ELECTRONICS CO LTD
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