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Optical imaging system

A technology of optical imaging system and optical axis, which is applied in optics, optical components, instruments, etc., can solve problems such as the impact of optical imaging system image quality, and achieve the effects of miniaturized imaging quality, optimized optical parameters, and good imaging quality

Pending Publication Date: 2021-03-30
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of prisms will have a negative impact on the image quality of the optical imaging system

Method used

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Experimental program
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Effect test

Embodiment 1

[0061] Refer to the following Figure 1 to Figure 2D An optical imaging system according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of an optical imaging system according to Embodiment 1 of the present application is shown.

[0062] like figure 1 As shown, the optical imaging system includes in sequence from the object side to the image side along the second direction: prism E0, diaphragm STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8 and imaging surface S17.

[0063] The prism E0 has a light incident surface, a light reflection surface and a light exit surface. The first lens E1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has positive refractive power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has negative refractive power, its object...

Embodiment 2

[0079] Refer to the following Figure 3 to Figure 4D An optical imaging system according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. image 3 A schematic structural diagram of an optical imaging system according to Embodiment 2 of the present application is shown.

[0080] like image 3 As shown, the optical imaging system includes in sequence from the object side to the image side: a prism E0, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens Lens E6, seventh lens E7, filter E8 and imaging surface S17.

[0081] The prism E0 has a light incident surface, a light reflection surface and a light exit surface. The first lens E1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has positive refractive pow...

Embodiment 3

[0093] Refer to the following Figure 5 to Figure 6D An optical imaging system according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging system according to Embodiment 3 of the present application is shown.

[0094] like Figure 5 As shown, the optical imaging system includes in sequence from the object side to the image side: a prism E0, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens Lens E6, seventh lens E7, filter E8 and imaging surface S17.

[0095] The prism E0 has a light incident surface, a light reflection surface and a light exit surface. The first lens E1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has positive refractive power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has negative refractive power, its object side S5 ...

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Abstract

The invention discloses an optical imaging system, which sequentially comprises, from an object side to an image side along an optical axis: a prism, a diaphragm, a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, wherein the prism reflects light incident to the prism in a first direction to be emitted from the prism in a second direction; thediaphragm, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are sequentially arranged from the prism to the image side in the second direction. The total effective focal length f of the optical imaging system and an entrance pupil diameter EPD of the optical imaging system meet the condition that f / EPD is smaller than 1.4.

Description

technical field [0001] The present application relates to the field of optical elements, in particular, to an optical imaging system. Background technique [0002] At present, optical imaging systems applied to portable electronic products such as smart phones mainly adopt digital zoom and low-magnification optical zoom technology in order to have a zoom function. However, due to the limitation of the thickness of portable electronic products such as mobile phones, the horizontal optical imaging system can only have a small focal length, and the optical zoom capability is very limited. [0003] At the same time, with the development of the industry, most lens manufacturers gradually adopt the periscope structure for zooming. This structure is different from the traditional side-by-side arrangement of dual-camera lenses. It adjusts the cameras that were originally placed vertically to be arranged horizontally inside the phone, and uses special optical prisms to refract light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/0065G02B13/02G02B9/64
Inventor 李建林李洋邢天祥贺凌波黄林戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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