Long-focus biprism periscopic lens

A double-prism, periscope technology, applied in the field of optical lenses, can solve problems such as narrow lens installation space, and achieve the effects of improving imaging clarity, increasing the field of view, and improving analytical capabilities.

Pending Publication Date: 2019-01-11
辽宁中蓝光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing mobile phone cameras, in addition to requiring high pixels and large apertures, are also subject to the mechanical structure of mobile phones such as lightweight and ultra-thin. At present, the full-screen notch screen of smartphones has set off a boom in the market, which makes lens installation The space is narrower, this application is proposed to adapt to the increasingly narrow space for lens installation

Method used

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  • Long-focus biprism periscopic lens
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  • Long-focus biprism periscopic lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 , figure 2 As shown, the long focal length double prism periscope lens includes in sequence from the object side to the image side: an optical reflection element IP1 that bends the optical path, and the angle between the reflection surface 2 and the optical axis is 45°; a positive refractive power The first lens P2 of the first lens, the object side 5 of the first lens is a concave surface at the optical axis; a second lens P3 with a positive refractive power and a meniscus shape, and the image side 8 of the second lens is a convex surface; a negative refractive power A strong third lens P4, the object side is convex at the optical axis, and the image side is concave; a fourth lens P5 with positive refractive power, the object side 11 of the fourth lens is convex; a positive refractive power The fifth lens P6, the image side 14 of the fifth lens is a concave surface at the optical axis; the sixth lens P7 of a positive refractive power, there is an inf...

Embodiment 2

[0081] The shape of lens is the same as embodiment 1.

[0082] The specific design parameters of the lens are shown in Table 3 and Table 4:

[0083] table 3

[0084]

[0085] Table 4

[0086]

[0087]

[0088] In this embodiment, the viewing angle of the lens is 71°, and the half-image height is 2.322mm.

[0089] The radius of curvature of the light incident surface of the optical reflection element I (45°prism) is -7.0857, and the inclination angle between the hypotenuse and the optical axis is 45°.

[0090] The radius of curvature of the light exit surface of the optical reflection element II (45°prism) is 5.779, and the inclination angle between the hypotenuse and the optical axis is 45°.

[0091] The effective focal length f1 of the first lens is 3.282mm,

[0092] The effective focal length f2 of the second lens is 6.047mm,

[0093] The effective focal length f3 of the third lens is -2.252mm,

[0094] The effective focal length f4 of the fourth lens is 3.647...

Embodiment 3

[0110] The shape of lens is the same as embodiment 1.

[0111] The specific design parameters of the lens are shown in Table 5 and Table 6:

[0112] table 5

[0113]

[0114] Table 6

[0115]

[0116] In this embodiment, the viewing angle of the lens is 70°, and the half-image height is 2.322mm.

[0117] The radius of curvature of the light incident surface of the optical reflection element I (45°prism) is -7.0857, and the inclination angle between the hypotenuse and the optical axis is 45°.

[0118] The radius of curvature of the light exit surface of the optical reflection element II (45°prism) is 5.5497, and the inclination angle between the hypotenuse and the optical axis is 45°.

[0119] The effective focal length f1 of the first lens is 3.639mm,

[0120] The effective focal length f2 of the second lens is 5.877mm,

[0121] The effective focal length f3 of the third lens is -2.312mm,

[0122] The effective focal length f4 of the fourth lens is 3.682mm,

[0123]...

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Abstract

The invention relates to a long-focus biprism periscopic lens, which comprises an optical reflection element I, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens andan optical reflection element II from the object side to the image side. The optical reflection element I bends an optical path, and has an angle of 45 degrees between the reflection surface and theoptical axis. The first lens has a positive refractive power, and the object side is concave at the optical axis. The second lens has a positive refractive power and a meniscus shape, the image side is a convexity. The third lens has a negative refractive power, the object side is a convexity at the optical axis, and the image side is a concavity. The fourth lens has a positive refractive power, the object side is a convexity. The fifth lens has a positive refractive power, the image side is a concavity at the optical axis. The sixth lens has a positive refractive power, and has an inflectionpoint in the image side. The optical reflection element II bends the optical path, and has an angle of 45 degrees between the reflection surface and the optical axis. The long-focus biprism periscopiclens realizes a periscope function and satisfies the configuration of the ultra-thin thickness of a mobile phone by changing the direction of the optical axis, and realizes the purpose of not occupying the screen area of the mobile phone by matching a mechanical telescopic mechanism on the mobile phone.

Description

technical field [0001] The invention relates to an optical lens, in particular to a double prism periscope lens with a long focal length, which is suitable for periscope mobile phones and small portable electronic products. Background technique [0002] Existing mobile phone cameras, in addition to requiring high pixels and large apertures, are also subject to the mechanical structure of mobile phones such as lightweight and ultra-thin. At present, the full-screen notch screen of smartphones has set off a boom in the market, which makes lens installation The space is narrower, and this application is proposed to adapt to the increasingly narrow space for lens installation. Contents of the invention [0003] The purpose of the present invention is to provide a long focal length double prism periscope lens with a more reasonable structural design and greatly reduced installation space. By changing the direction of the optical axis, the periscope function can be realized, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B23/08G02B13/00G02B13/18
CPCG02B23/08G02B13/0045G02B13/007
Inventor 袁宏金兑映
Owner 辽宁中蓝光电科技有限公司
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