Fog penetrating lens and camera

A fog-permeable lens technology, applied in the field of optical imaging, can solve the problems of difficulty in manufacturing fog-permeable lenses, high cost, and poor stability of imaging quality

Active Publication Date: 2016-11-23
ZHEJIANG DAHUA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Embodiments of the present invention provide a fog-penetrating lens and a camera, which are used to solve the technical problems e

Method used

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  • Fog penetrating lens and camera
  • Fog penetrating lens and camera
  • Fog penetrating lens and camera

Examples

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Example Embodiment

[0041] In order to make the technical problems, technical solutions, and effects solved by the present invention clearer and clearer, the preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings of the specification. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention. The invention is not intended to limit the invention. And if there is no conflict, the embodiments in the application and the features in the embodiments can be combined with each other.

[0042] The embodiment of the present invention provides a fog through lens, such as figure 1 As shown, from the object side to the image side along the optical axis direction, it includes: front fixed group (G1), zoom group (G2), rear fixed group (G3), focus group (G4), filter group (G5) and Imaging plane; among them, the focal power of the front fixed group (G1) is positive, the focal power ...

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Abstract

The invention discloses a fog penetrating lens and a camera. The fog penetrating lens sequentially comprises a front fixing group (G1), a zooming group (G2), a back fixing group (G3), a focusing group (G4), a filter group and an imaging plane from an object side to an image side along the optical axis direction; the focal length is changed by the position change of the focusing group (G2) and the focusing group (G4) along the optical axis direction; the focal length f2 of the zooming group (G2), the focal length f4 of the focusing group (G4), the short focal length fw of the fog penetrating lens, and the long focal length ft of the fog penetrating lens meet the requirements shown in the description; the light rays pass through the front fixing group, the zooming group, the back fixing group, the focusing group and the filter group, and the imaging deviation on the imaging plane is smaller than the threshold deviation. The fog penetrating lens has the advantage that the spherical aberration, coma, astigmatism, field curvature, chromatism of magnification, chromatism of position, and the like of a lens system can be automatically calibrated to the ideal range, so that the properties of glimmer aperture, high resolution, infrared night vision and multi-level fog penetrating are realized.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of optical imaging, and in particular, to a fog-penetrating lens and a camera. Background technique [0002] Although the existing camera lens is a high-end product with relatively mature technology, there are still some imperfections. For example, if the surveillance personnel want to take long-distance shooting, they will have a higher impact on the external natural conditions such as light brightness and air transparency at that time. If there is fog due to bad weather during shooting, it will have a negative impact on the shooting effect of the scenery isolated by the fog, and it will even be impossible to take pictures. [0003] The utility model patent with publication (announcement) No. CN201069480Y discloses a "Fog Penetration Camera Lens", which includes a focusing lens group, a zoom lens group, an aperture and its corresponding matching motor, and a lens interface, and is equi...

Claims

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Application Information

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IPC IPC(8): G02B15/177G02B7/04G02B7/00H04N5/225
CPCG02B7/006G02B7/04G02B15/177H04N23/55
Inventor 刘凯
Owner ZHEJIANG DAHUA TECH
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