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Optical system, lens module and electronic equipment

An optical system and lens technology, applied in optics, optical components, instruments, etc., can solve the problems of difficult early warning, the existence of driving risks, and the difficulty of vehicle cameras.

Inactive Publication Date: 2022-01-04
TIANJIN OFILM OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing on-board cameras are difficult to meet the requirements of large-angle shooting and clear imaging at the same time, so it is difficult to make real-time and accurate early warnings, which leads to the existence of driving risks

Method used

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  • Optical system, lens module and electronic equipment
  • Optical system, lens module and electronic equipment
  • Optical system, lens module and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0043] Please refer to figure 1 with figure 2 , the optical system of this embodiment includes in sequence from the object side to the image side along the optical axis direction:

[0044] The first lens L1 has negative refractive power. The object side S1 of the first lens L1 is convex at the near optical axis and near the circumference, and the image side S2 is concave at the near optical axis and near the circumference.

[0045] The second lens L2 has positive refractive power. The object side S3 of the second lens L2 is concave at the near optical axis and near the circumference, and the image side S4 is convex at the near optical axis and near the circumference.

[0046] The third lens L3 has positive refractive power, and the object side S5 and the image side S6 of the third lens L3 are convex at the near optical axis and near the circumference.

[0047] The fourth lens L4 has negative refractive power, and the object side S7 and the image side S8 of the fourth lens L...

no. 2 example

[0066] Please refer to image 3 with Figure 4 , the optical system of this embodiment includes in sequence from the object side to the image side along the optical axis direction:

[0067] The first lens L1 has negative refractive power. The object side S1 of the first lens L1 is convex at the near optical axis and near the circumference, and the image side S2 is concave at the near optical axis and near the circumference.

[0068] The second lens L2 has positive refractive power. The object side S3 of the second lens L2 is concave at the near optical axis and near the circumference, and the image side S4 is convex at the near optical axis and near the circumference.

[0069] The third lens L3 has positive refractive power, and the object side S5 and the image side S6 of the third lens L3 are convex at the near optical axis and near the circumference.

[0070] The fourth lens L4 has negative refractive power, and the object side S7 and the image side of the fourth lens L4 a...

no. 3 example

[0082] Please refer to Figure 5 with Image 6 , the optical system of this embodiment includes in sequence from the object side to the image side along the optical axis direction:

[0083] The first lens L1 has negative refractive power. The object side S1 of the first lens L1 is convex at the near optical axis and near the circumference, and the image side S2 is concave at the near optical axis and near the circumference.

[0084] The second lens L2 has positive refractive power. The object side S3 of the second lens L2 is concave at the near optical axis and near the circumference, and the image side S4 is convex at the near optical axis and near the circumference.

[0085] The third lens L3 has positive refractive power, and the object side S5 and the image side S6 of the third lens L3 are convex at the near optical axis and near the circumference.

[0086] The fourth lens L4 has negative refractive power, and the object side S7 and the image side of the fourth lens L4 a...

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Abstract

The invention discloses an optical system, a lens module and electronic equipment. The optical system sequentially comprises a first lens to a fifth lens with refractive power from an object side to an image side along an optical axis,and a diaphragm between a second lens and a third lens, wherein the first lens and the fourth lens have negative refractive power, the second lens, the third lens and the fifth lens have positive refractive power, the object side surface of the first lens, the image side surface of the second lens and the mirror surfaces of the third lens and the fifth lens are convex at a paraxial region, the image side surface of the first lens, the object side surface of the second lens and the mirror surface of the fourth lens are concave at a paraxial region, the optical system satisfies the following relational expressions that f12 / f35 is more than -2.5 and less than -1.5, f12 is the effective combined focal length of the first lens and the second lens, and f35 is the effective combined focal length of the third lens and the fifth lens. According to the invention, the surface type and the refractive power of the lens are reasonably designed, and the relational expression is met, so that the imaging quality is improved while the optical system meets the wide-angle imaging range.

Description

technical field [0001] The invention belongs to the technical field of optical imaging, and in particular relates to an optical system, a lens module and electronic equipment. Background technique [0002] With the development of the automotive industry, the technical requirements for automotive cameras such as ADAS (Advanced Driver Assistant System), driving recorder, and reversing images are getting higher and higher, not only requiring a wide viewing angle, but also the requirements for imaging quality. Higher and higher. [0003] Existing vehicle-mounted cameras are difficult to meet the needs of wide-angle shooting and clear imaging at the same time, making it difficult to make real-time and accurate early warnings, which in turn leads to the existence of driving risks. Contents of the invention [0004] The object of the present invention is to provide an optical system, a lens module and electronic equipment, which can improve the imaging quality of the optical sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/18G02B13/06
Inventor 乐宇明赵迪兰宾利周芮王欢朱志鹏谢建城
Owner TIANJIN OFILM OPTO ELECTRONICS CO LTD
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