Glass and plastic mixed fixed-focus lens

A fixed-focus lens and lens technology, applied in the field of optical imaging, can solve the problems of inability to achieve large aperture, excellent high and low temperature performance, and low definition, and achieve the effects of good manufacturability, large aperture, and uniform illuminance overall
CN110346899APending Publication Date: 2019-10-18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
2019-10-18

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Abstract

The invention relates to a glass and plastic mixed fixed-focus lens. The glass and plastic mixed fixed-focus lens is composed of a glass lens and a plastic lens, and comprises a first lens (1), a diaphragm (S), a second lens (2), a third lens (3), a fourth lens (4), a fifth lens (5) and a sixth lens (6), which are sequentially arranged from an object side to an image side along the optical axis; the first lens (1), the second lens (2) and the sixth lens (6) are negative focal power lenses; the third lens (3) and the fifth lens (5) are positive focal power lenses; and the fourth lens (4) is a positive or negative focal power lens. The lens in the invention has the characteristics of being large in diaphragm, confocal in day and night, and non-defocusing in a temperature range of -40 to 85 DEG C.
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Description

technical field

[0001] The invention relates to the field of optical imaging, in particular to a glass-plastic hybrid fixed-focus lens. Background technique

[0002] With the rapid development of technology, the requirements for optical lenses are getting higher and higher. Most of the fixed-focus lenses currently on the market cannot achieve large apertures, excellent high and low temperature performance, and confocal day and night; or they can achieve large apertures, but there are disadvantages such as relatively expensive prices and low resolution. Therefore, the present invention aims to propose a solution to the above shortcomings, providing a 4K lens with large aperture, confocal day and night, and no virtual focus within the temperature range of -40°C to 85°C. Contents of the invention

[0003] The object of the present invention is to solve the above problems, and to provide a glass-plastic hybrid fixed-focus lens.

[0004] In order to achieve the above object, ...

Claims

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