Prime lens and imaging system thereof

A fixed-focus lens and lens technology, applied in the field of fixed-focus lenses and their imaging systems, can solve the problems of poor imaging effect of infrared and visible light confocal lenses, and achieve the effects of reduced tolerance sensitivity, excellent temperature performance, and reduced processing and assembly.
CN110320645APending Publication Date: 2019-10-11舜宇光学(中山)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
舜宇光学(中山)有限公司
Publication Date
2019-10-11

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Abstract

The invention relates to a prime lens and an imaging system thereof, the prime lens comprises a first lens (101), a second lens (102), a third lens (103), a fourth lens (104) with positive focal power, a fifth lens (105) with negative focal power, a sixth lens (106) with negative focal power, a seventh lens (107) with positive focal power, an eighth lens (108), a ninth lens (109) and a tenth lens(110) with positive focal power, which are sequentially arranged from an object side to an image side; the fourth lens (104) and the fifth lens (105) are disposed in a mutually matching manner; and the sixth lens (106) and the seventh lens (107) are disposed in a mutually matching manner. The prime lens provided by the invention can effectively correct the chromatic aberration of a visible light path at a low cost via a simple structure and helps to reduce the spherical aberration of an infrared light path, and the performance of two paths is simultaneously improved by the simple structure.
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Description

technical field

[0001] The invention relates to the field of optical imaging, in particular to a fixed-focus lens and an imaging system thereof. Background technique

[0002] At present, the infrared and visible light confocal lenses generally have such shortcomings: low lens pixels, high and low temperature virtual focus, and many noises in low-light environments. And existing infrared-visible light confocal lens mostly needs to adopt some higher price abnormal dispersion and high refractive index material lens to realize confocal plane clear imaging in order to overcome the shortcoming of above-mentioned existence. This kind of lens is not only difficult to design and high in development cost, but also difficult to image infrared and visible light with optimal resolution at the same time. . Contents of the invention

[0003] The purpose of the present invention is to provide a fixed-focus lens to solve the problem of poor imaging effect of the infrared-visible light co...

Claims

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