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Periscopic long-focus optical imaging lens

An optical imaging lens and periscope technology, applied in the field of periscope telephoto optical imaging lens, can solve the problems of reduced image quality, inability to meet consumers' high magnification, and reduced focal length of the lens, so as to reduce the thickness of the lens, Guarantee the effect of large magnification zoom and image quality

Pending Publication Date: 2021-09-24
HUIZHOU SAGETECH OPTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the rise of smart electronic products, consumers have increasingly higher requirements for the camera performance of electronic products. Due to the limitation of thinner and lighter electronic products, the volume of imaging lenses installed on electronic products also needs to be further compressed. The image quality will decrease with the compression of the size, and the focal length of the lens will also decrease accordingly. The focal length of the telephoto lens of the existing electronic products is generally less than 6mm, which can only achieve 2x optical zoom, which cannot satisfy consumers’ demand for high magnification. needs

Method used

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  • Periscopic long-focus optical imaging lens

Examples

Experimental program
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Effect test

no. 1 example

[0053] Please combine Figure 2 to Figure 4 , in the first embodiment, the periscope telephoto optical imaging lens satisfies Table 1-1, Table 1-2 and Table 1-3.

[0054] Table 1-1 is the basic parameters of the periscope telephoto optical imaging lens of the first embodiment, and Fov in the table is the field of view angle of the lens:

[0055]

[0056] Table 1-2 is the aspheric coefficient of each lens in the first embodiment:

[0057]

[0058] Table 1-3 is the value of each conditional expression in the first embodiment:

[0059]

no. 2 example

[0061] Please combine Figure 5 to Figure 7 The periscope telephoto optical imaging lens of this embodiment mainly includes an optical reflection element 20, a first lens 21, a second lens 22, a third lens 23, a fourth lens 24, and a first lens arranged in sequence from the object side to the image side. Five lenses 25 and filters 26. Wherein, the optical reflective element 20 can be a triangular prism, the included angle between the reflective surface and the optical axis is 45°, and a not-shown diaphragm is provided between the first lens 21 and the optical reflective element 20 .

[0062] It should be understood that the periscope-type telephoto optical imaging lens in the second embodiment satisfies the expressions in the above-mentioned first embodiment, and details are not repeated here.

[0063] In the second embodiment, the periscope telephoto optical imaging lens satisfies Table 2-1, Table 2-2 and Table 2-3.

[0064] Table 2-1 is the basic parameters of the periscop...

no. 3 example

[0071] Please combine Figure 8 to Figure 10 The periscope telephoto optical imaging lens of this embodiment mainly includes an optical reflection element 30, a first lens 31, a second lens 32, a third lens 33, a fourth lens 34, and a first lens arranged sequentially from the object side to the image side. Five lenses 35 and filters 36. Wherein, the optical reflective element 30 may be a triangular prism, the included angle between the reflective surface and the optical axis is 45°, and a not-shown aperture is provided between the first lens 31 and the optical reflective element 30 .

[0072] It should be understood that the periscope telephoto optical imaging lens in the third embodiment satisfies the expressions in the first embodiment above, and details are not repeated here.

[0073] In the third embodiment, the periscope telephoto optical imaging lens satisfies Table 3-1, Table 3-2 and Table 3-3.

[0074] Table 3-1 is the basic parameters of the periscope telephoto opti...

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Abstract

The invention relates to a periscopic telephoto optical imaging lens. The optical imaging lens comprises an optical reflection element, a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from an object side to an image side, wherein the periscopic telephoto optical imaging lens meets the following relational expressions of ImgH / Fno>1.13; wherein ImgH is the length of the diagonal line of the effective imaging area of the periscopic long-focus optical imaging lens, and Fno is the F number of the aperture. The optical imaging lens is high in imaging quality and light and thin in size, and has high-magnification optical zoom.

Description

technical field [0001] The invention relates to the technical field of optical imaging lenses, in particular to a periscope telephoto optical imaging lens. Background technique [0002] In recent years, with the rise of smart electronic products, consumers have increasingly higher requirements for the camera performance of electronic products. Due to the limitation of thinner and lighter electronic products, the volume of imaging lenses installed on electronic products also needs to be further compressed. The image quality will decrease with the compression of the size, and the focal length of the lens will also decrease accordingly. The focal length of the telephoto lens of the existing electronic products is generally less than 6mm, which can only achieve 2x optical zoom, which cannot satisfy consumers' demand for high magnification. demand. [0003] A periscope lens is a lens that can achieve optical zoom inside the fuselage. Compared with a standard lens, a periscope le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/02G02B13/18
CPCG02B13/0045G02B13/0065G02B13/009G02B13/02G02B13/18
Inventor 陈龙泉
Owner HUIZHOU SAGETECH OPTRONICS CO LTD