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Optical imaging lens

An optical imaging lens and imaging technology, applied in optics, optical components, instruments, etc., can solve problems such as picture resolution or discontinuity of field of view, and the arrangement of multiple lenses takes up space, and achieve good optical performance, small size, and small size. The effect of the aperture value

Pending Publication Date: 2022-04-26
GENIUS ELECTRONICS OPTICAL XIAMEN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in a shooting system composed of multiple fixed-focus lenses, in addition to the arrangement of multiple lenses taking up a lot of space, it may also cause discontinuity in image resolution or field of view due to different lenses when adjusting the focal length during recording.

Method used

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Embodiment Construction

[0050] Before starting to describe the present invention in detail, first clearly indicate the symbols in the drawings: 0: aperture; 1: first lens; 2: second lens; 3: third lens; 4: fourth lens; 5: fifth Lens; 6: sixth lens; 7: seventh lens; 9: optical filter; 10: optical imaging lens; 15, 25, 35, 45, 55, 65, 75, 95, 110, 410, 510: object side ;16, 26, 36, 46, 56, 66, 76, 96, 120, 320: image side; 99: imaging surface; 100, 200, 300, 400, 500: lens; 130: assembly part; 251, 261, 351, 361, 451, 461, 551, 561, 651, 661, 751, 761, Z1: optical axis area; 153, 163, 253, 263, 353, 363, 453, 463, 553, 563, 653, 663, 753, 763, Z2: circumferential area; 211, 212: parallel rays; A1: object side; A2: image side; D1, D2, D3: adjustable air gap; CP: center point; CP1: second 1 center point; CP2: second center point; EL: extension line; I: optical axis; Lc: chief ray; Lm: marginal ray; M, R: intersection point; OB: optical boundary; TP1: first transformation point; TP2: second transition p...

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Abstract

The invention discloses an optical imaging lens, which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from an object side to an image side along an optical axis, each of the first to seventh lenses comprises an object side surface facing the object side and allowing imaging light to pass through and an image side surface facing the image side and allowing imaging light to pass through, the first lens has a positive refractive index, the circumferential area of the object side surface of the fourth lens is a convex surface, the fifth lens has a positive refractive index, the sixth lens has a positive refractive index, and the fifth lens has a convex surface. The optical axis area of the object side surface of the third lens is a convex surface, the optical axis area of the object side surface of the seventh lens is a convex surface, the second lens has a negative refractive index or the third lens has a positive refractive index or the seventh lens has a negative refractive index, and the optical imaging lens has only seven lenses and is provided with at least one adjustable air gap.

Description

technical field [0001] The invention belongs to the field of optical elements, in particular to an optical imaging lens. Background technique [0002] In recent years, the optical imaging lens has been continuously evolving, and the scope of application is wider. In addition to requiring the lens to be thin and short, the design of a small aperture value (Fno) is conducive to increasing the luminous flux, and a large field of view has gradually become a trend. In addition, the demand for video recording of portable electronic products is also increasing. The optical zoom of a single zoom lens or the digital zoom of multiple fixed-focus lenses can meet different shooting needs. However, in a shooting system composed of multiple fixed-focus lenses, the arrangement of multiple lenses takes up more space, and the different lenses may cause discontinuity in image resolution or field of view when adjusting the focal length during recording. Therefore, how to design an optical ima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G03B30/00
CPCG02B13/0045G02B13/009G03B30/00G02B9/64G02B3/04G02B13/18
Inventor 公金辉朱清智黄颂超谢宏健
Owner GENIUS ELECTRONICS OPTICAL XIAMEN
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