A compact optical lens

An optical lens and compact technology, applied in the field of optical lens, can solve the problems of large overall lens volume and total optical length, etc., and achieve the effects of improving production yield, ensuring high brightness, and reducing imaging chromatic aberration
CN107065133BActive Publication Date: 2019-05-10惠州市信华光学技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
惠州市信华光学技术有限公司
Publication Date
2019-05-10

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Abstract

The invention discloses a compact optical lens. The lens includes a lens group, an aperture and an IR filter. The aperture is located in front of the lens group, and the IR filter is located in the lens group. the rear; the lens group includes six lens units, and the six lens units include at least two cemented lens groups and one glass aspherical lens. The optical lens of this invention achieves large aperture, high brightness and high-definition resolution while greatly reducing the total optical length of the lens; and includes at least two cemented lenses and one glass aspherical lens. The arrangement of the two cemented lenses can effectively reduce the imaging quality of the lens. Chromatic aberration gives the lens excellent color reproduction capabilities; aspherical glass can effectively shorten the total optical length of the lens, compensate and correct spherical aberration, field curvature and other aberrations, so that the center and edge imaging of the lens can achieve high-definition effects; set the diaphragm in the lens group The front not only ensures the high brightness of the lens, but also reduces the lens tolerance sensitivity, effectively improving the production yield.
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Description

technical field

[0001] The invention relates to the field of optical lenses, in particular to a compact optical lens. Background technique

[0002] Optical lens is an essential part of machine vision system, which directly affects the quality of imaging. This lens has been widely used in various fields. With the advancement of technology and the continuous improvement of market demand, the automotive ADAS field requires optical lenses to have a large aperture and high resolution, and at the same time require a more compact size, so that they can be used in some locations with limited installation size, such as near the car rearview mirror. etc., while improving the overall aesthetics. The total optical length of the lens in the prior art is too long, and the diameter of the front port of the lens is too large, resulting in too large overall volume, which cannot meet the market demand. Contents of the invention

[0003] The purpose of the present invention is to overcome ...

Claims

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