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Optical system, lens module and terminal equipment

An optical system and lens technology, applied in optics, optical components, instruments, etc., can solve problems such as poor camera pixels and poor field of view

Inactive Publication Date: 2021-09-10
TIANJIN OFILM OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides an optical system, lens module and terminal equipment, the optical system solves the problem of poor pixels and field of view of traditional cameras

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] like figure 2 As shown, the straight line in the middle indicates the optical axis, the left side of the optical system is the object side, and the right side is the image side. In the optical system provided by this embodiment, from the object side to the image side, there are first lens L1, second lens L2, third lens L3, diaphragm STO, fourth lens L4, fifth lens L5, and sixth lens L6, the seventh lens L7, the eighth lens L8, the infrared filter element IRCF, and the protective glass CG. Wherein, the fourth lens L4 and the fifth lens L5 are configured as cemented lenses, and the cemented lenses are beneficial to reduce decentering sensitivity of the optical imaging system, improve assembly yield, and reduce production costs.

[0078] The first lens L1 has negative refractive power and is made of glass. The object-side surface S1 is convex, and the image-side surface S2 is concave, both of which are spherical.

[0079] The second lens L2 has negative refractive power...

Embodiment 2

[0103] like Image 6 As shown, the straight line in the middle indicates the optical axis, the left side of the optical system is the object side, and the right side is the image side. In the optical system provided by this embodiment, from the object side to the image side, there are first lens L1, second lens L2, third lens L3, diaphragm STO, fourth lens L4, fifth lens L5, and sixth lens L6, seventh lens L7, eighth lens L8, protective glass CG. Wherein, the fourth lens L4 and the fifth lens L5 are configured as cemented lenses, and the cemented lenses are beneficial to reduce decentering sensitivity of the optical imaging system, improve assembly yield, and reduce production costs.

[0104] The first lens L1 has negative refractive power and is made of glass. The object-side surface S1 is convex, and the image-side surface S2 is concave, both of which are spherical.

[0105] The second lens L2 has negative refractive power and is made of glass. The object-side surface S3 i...

Embodiment 3

[0128] like Figure 10 As shown, the straight line in the middle indicates the optical axis, the left side of the optical system is the object side, and the right side is the image side. In the optical system provided by this embodiment, from the object side to the image side, there are first lens L1, second lens L2, third lens L3, diaphragm STO, fourth lens L4, fifth lens L5, and sixth lens L6, seventh lens L7, eighth lens L8, protective glass CG. Wherein, the fourth lens L4 and the fifth lens L5 are configured as cemented lenses, and the cemented lenses are beneficial to reduce decentering sensitivity of the optical imaging system, improve assembly yield, and reduce production costs.

[0129] The first lens L1 has negative refractive power and is made of glass. The object-side surface S1 is convex, and the image-side surface S2 is concave, both of which are spherical.

[0130] The second lens L2 has negative refractive power and is made of glass. The object-side surface S3...

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Abstract

The embodiment of the invention discloses an optical system, a lens module and terminal equipment. The optical system comprises a plurality of lenses which are sequentially arranged from an object side to an image side. The plurality of lenses comprise a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, wherein the first lens has negative refractive power; the second lens has negative refractive power, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface; the third lens has positive refractive power, and the object side surface of the third lens is a convex surface; the fourth lens element has positive refractive power; the fifth lens element with negative refractive power; the sixth lens element with positive refractive power; the seventh lens has negative refractive power, and the object side surface of the seventh lens is a concave surface; and the eighth lens element has positive refractive power. The refractive power of the first lens to the eighth lens and the surface types of the second lens, the third lens and the seventh lens are limited in the optical system, so that the optical system has high pixel, imaging information can be captured more clearly, the image quality is better, and meanwhile, the imaging visual field range is widened.

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 terminal equipment. Background technique [0002] With the development of the vehicle industry, the technical requirements for vehicle cameras such as driving recorders and reversing images are getting higher and higher. Not only is miniaturization and light weight required, but the requirements for pixel image quality are also getting higher and higher. [0003] At present, as terminal equipment tends to be thinner and lighter, there are many limitations in setting high-performance cameras in such terminal equipment. Among them, the optical system of traditional cameras cannot meet the requirements in terms of pixels and field of view, resulting in poor imaging quality. Moreover, the amount of information in the spatial range that the optical system can obtain is limited. [0004] Therefore, how to increase the pixel of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/00G02B13/18
Inventor 蔡雄宇兰宾利周芮
Owner TIANJIN OFILM OPTO ELECTRONICS CO LTD
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