Optical system, camera module and automobile

An optical system and related technology, applied in optical system, camera module and automobile field

Pending Publication Date: 2021-03-19
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide an optical system, camera module and automobile

Method used

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  • Optical system, camera module and automobile
  • Optical system, camera module and automobile
  • Optical system, camera module and automobile

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0093] like figure 1 In the shown first embodiment, the optical system 100 sequentially includes a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, a third lens L3 with positive refractive power, and The stop STO, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, and the sixth lens L6 with negative refractive power, so that the optical system 100 has a six-piece structure. In addition, the fifth lens L5 is cemented with the sixth lens L6 to form a cemented lens 111 . The image side of the sixth lens L6 is further provided with an infrared filter L7 and a protective glass L8 in sequence. The infrared filter L7 and the protective glass L8 may be a part of the optical system 100 or may not belong to the optical system 100 . When the infrared filter L7 and the protective glass L8 are not provided, the distance from the image side S12 of the sixth lens L6 to the imaging surface S17 is ...

no. 2 example

[0119] like image 3 In the shown second embodiment, the optical system 100 sequentially includes a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, a third lens L3 with positive refractive power from the object side to the image side, The stop STO, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, and the sixth lens L6 with negative refractive power, so that the optical system 100 has a six-piece structure. In addition, the fifth lens L5 is cemented with the sixth lens L6 to form a cemented lens 111 . The image side of the sixth lens L6 is further provided with an infrared filter L7 and a protective glass L8 in sequence. The infrared filter L7 and the protective glass L8 may be a part of the optical system 100 or may not belong to the optical system 100 . Figure 4 is the spherical aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the optical system ...

no. 3 example

[0137] like Figure 5 In the third embodiment shown, the optical system 100 sequentially includes a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, an aperture STO, and a first lens L1 with positive refractive power from the object side to the image side. There are three lenses L3, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power, so that the optical system 100 has a five-piece structure. In addition, the fourth lens L4 is cemented with the fifth lens L5 to form a cemented lens 111 . The image side of the fifth lens L5 is further provided with an infrared filter L7 and a protective glass L8 in sequence. The infrared filter L7 and the protective glass L8 may be a part of the optical system 100 or may not belong to the optical system 100 . Image 6 is the spherical aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the optical system 100 in the third em...

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Abstract

The invention relates to an optical system, a camera module and an automobile. The optical system includes, in order from an object side to an image side, a first lens element with negative refractivepower having a convex object-side surface and a concave image-side surface; a second lens element with negative refractive power, wherein the image-side surface of the second lens element is concave;a third lens element with positive refractive power having convex object-side and image-side surfaces; a fourth lens element with positive refractive power, wherein the object-side surface and the image-side surface of the fourth lens element are convex; a lens unit having refractive power; and a diaphragm arranged on the object side of the fourth lens; the optical system satisfies the followingrelationship of FOV / CRA > 10; wherein the FOV is a field angle in the diagonal direction of the imaging surface of the optical system, and the CRA is an incident angle of the main light. At the moment, the optical system has a large field angle, and meanwhile, the angle of light entering the imaging surface of the optical system can be reduced, so the imaging definition is improved.

Description

technical field [0001] The invention relates to the field of optical imaging, in particular to an optical system, a camera module and an automobile. Background technique [0002] At present, common cameras generally have the problem of small field of view. Therefore, when used as a vehicle-mounted camera device, the car still has a large visual field blind spot, and the driver cannot obtain enough peripheral scenes of the car body, especially when the car is driving at a high speed. When changing lanes, it will not be possible to obtain vehicle information on the side and rear in time, which is prone to safety hazards. Contents of the invention [0003] Based on this, it is necessary to provide an optical system, a camera module and a vehicle for the problem of how to obtain a larger field of view. [0004] An optical system, sequentially comprising from the object side to the image side: [0005] A first lens with negative refractive power, the object side of the first ...

Claims

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Application Information

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IPC IPC(8): G02B13/06G02B13/18G02B1/14
CPCG02B13/06G02B13/18G02B1/14
Inventor 邹海荣乐宇明俞炳泽兰宾利
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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