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Lens system and lens

A lens system and lens technology, applied in lens, optics, instruments, etc., can solve problems such as image quality deterioration

Inactive Publication Date: 2018-11-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present application provides a lens system and a lens to solve the problem of poor imaging quality caused by VCM in the prior art when focusing

Method used

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  • Lens system and lens

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Experimental program
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Embodiment Construction

[0034] First of all, some terms used in this application are explained in order to make those skilled in the art understand.

[0035] 1) The liquid lens is composed of a film wrapped in liquid. By changing the voltage on both sides of the liquid lens, the curvature of the liquid lens can be generated, thereby changing the focal length.

[0036] 2) Refractive power (refractive power), which is used to characterize the convergence or divergence of the lens on the light, can be expressed by the reciprocal of the focal length. When the refractive power is positive, it means that the lens has a converging effect on the light and is a convex lens; when the refractive power is When it is negative, it means that it has a divergent effect on light, and it is a concave lens.

[0037] 3), Abbe number, the Abbe number of the lens is the dispersion coefficient of the lens, which refers to the difference ratio of the refractive index of the lens at different wavelengths, and is used to char...

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Abstract

The invention discloses a lens system and a lens, which are used for solving the problem of imaging quality deterioration caused by using a VCM to realize focusing in the prior art. The lens system comprises a long-focus lens group and a liquid lens, wherein the long-focus lens group sequentially comprises a first fixed lens group and a second fixed lens group along an optical axis from the objectside to the image side; and the liquid lens is positioned at an arbitrary side of the long-focus lens group or between the first fixed lens group and the second fixed lens group along the optical axis direction. The liquid lens is arranged in the lens group, the effect of variable focal length can be realized just by changing voltages at two sides of the liquid lens without moving lenses in the long-focus lens group, and the sharpness of imaging can be ensured.

Description

technical field [0001] The present application relates to the technical field of electronic devices, in particular to a lens system and a lens. Background technique [0002] With the development of technology at any time, more and more functions are integrated in smart electronic products, among which the camera function is more common, and with the miniaturization of photosensitive chip size, the improvement of resolution and image quality, the functions set The lens system is closer to a compact imaging lens system with a small distance between the lenses, but for a compact imaging lens system, in order to ensure clear imaging, the focal length needs to be variable to achieve focusing. [0003] At present, the variable focal length in the lens system is mainly realized by adjusting the distance between each lens in the lens system and the photosensitive chip through a voice coil motor (voice coli motor, VCM). [0004] VCM is a device that converts electrical energy into m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/04G02B3/14
CPCG02B3/14G02B15/04
Inventor 江依达陈锴秦振凯
Owner HUAWEI TECH CO LTD
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