Long-focus infrared synchronous imaging lens

A synchronous imaging and infrared technology, which is applied in the field of telephoto infrared synchronous imaging lens, can solve the problems that the visible spectrum and infrared spectrum cannot be confocal, and achieve the effects of reducing the tolerance sensitivity of the system, smoothing the light trend, and realizing distortion
CN112285892APending Publication Date: 2021-01-29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
2021-01-29

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Abstract

The invention relates to a long-focus infrared synchronous imaging lens which sequentially comprises a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4), a fifth lens (L5), adiaphragm, a sixth lens (L6), a seventh lens (L7), an eighth lens (L8), a ninth lens (L9), a tenth lens (L10), an eleventh lens (L11) and a twelfth lens (L12) from the object side to the image side along an optical axis. The first lens (L1), the second lens (L2), the fifth lens (L5), the sixth lens (L6) and the eighth lens (L8) are positive focal power lenses; and the third lens (L3), the fourth lens (L4) and the seventh lens (L7) are negative focal power lenses. The long-focus infrared synchronous imaging lens can realize confocal visible light and infrared light, has excellent performances of a large aperture (FNO is less than or equal to 1.6) and a large target surface (half-image height IH is more than or equal to 7.8 mm), and does not have virtual focus in a temperature range of -40 DEG C to +85 DEG C.
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Description

technical field

[0001] The invention relates to the technical field of optical system and device design, in particular to a telephoto infrared synchronous imaging lens. Background technique

[0002] Intelligent traffic monitoring lens is a high-end application scene optical device, which is crucial to establishing a traffic safety system. Most of the existing intelligent traffic monitoring lenses can only image the visible spectrum, and at night, they need to be equipped with supplementary light equipment to carry out video recording. If the supplementary light equipment is bright, it is easy to cause the driver's eyes to be dizzy. Contents of the invention

[0003] The purpose of the present invention is to solve the above problems, and provide a telephoto infrared synchronous imaging lens, which solves the problem that the existing lens cannot achieve confocality of the visible spectrum and the infrared spectrum.

[0004] To achieve the above object of the present inven...

Claims

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