Monitoring lens
A lens and lens technology, which is applied in the direction of optical components, optics, instruments, etc., can solve the problem of low definition of monitoring images, and achieve the effect of increasing luminous flux and high definition
Pending Publication Date: 2021-02-09
HANGZHOU HIKVISION DIGITAL TECH
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Under low light conditions, the surveillance image captured by the surveillance camera has low clarity
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[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0031] In order to solve the technical problem in the related art that the definition of the monitoring image captured by the monitoring lens is low under the condition of low light intensity, the embodiment of the present invention provides a monitoring lens.
[0032] Such as figure 1 As shown, the monitoring lens provided by the embodiment of the present invention may include: a diaphragm 10 , and a first lens 21 to an eighth lens 28 , a filter 30 and a sens...
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The invention provides a monitoring lens. The monitoring lens comprises a diaphragm, first to eighth lenses, an optical filter and a sensor, wherein the first to eighth lenses are sequentially arranged from an object plane side to an image plane side; the first surface of the first lens is a concave surface, and the second surface is a concave surface; the third surface of the second lens is a convex surface, and the fourth surface is a convex surface; the fifth surface of the third lens is a concave surface, and the sixth surface is a concave surface; the seventh surface of the fourth lens isa convex surface, and the eighth surface is a convex surface; the ninth surface of the fifth lens is a convex surface, and the tenth surface of the fifth lens is a concave surface or a convex surface; the eleventh surface of the sixth lens is a convex surface, and the twelfth surface of the sixth lens is a convex surface; the thirteenth surface of the seventh lens is a concave surface, and the fourteenth surface of the seventh lens is a concave surface; the fifteenth face of the eighth lens is a convex face, and the sixteenth face of the eighth lens is a concave face. Therefore, under the condition of relatively low illuminance, the definition of a monitoring image shot by the monitoring lens is relatively high.
Description
technical field [0001] The present application relates to the technical field of monitoring, in particular to a monitoring lens. Background technique [0002] The surveillance lens refers to the lens of the surveillance camera. In the related art, the aperture of the monitoring lens is usually small. Under the condition of low illuminance, the definition of the monitoring image captured by the monitoring lens is low. [0003] For this reason, it is necessary to provide a new monitoring lens, so that the monitoring lens can still capture a higher-definition monitoring image under the condition of lower illuminance. Contents of the invention [0004] In order to solve the technical problem in the related art that the sharpness of the monitoring image captured by the monitoring lens is low under the condition of low illuminance, the embodiment of the present invention provides a monitoring lens, including: a diaphragm, and a The first lens to the eighth lens, filter and se...
Claims
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IPC IPC(8): G02B13/18
CPCG02B13/0045
Inventor 桑汤庆
Owner HANGZHOU HIKVISION DIGITAL TECH