Infrared confocal optical system with low temperature excursion, low cost and high pixel

Abstract

The invention discloses an infrared confocal optical system with low temperature excursion, low cost and high pixel. The infrared confocal optical system sequentially comprises a first lens (1), a second lens (2), a third lens (3), a diaphragm (4), a fourth lens (5), a fifth lens (6), a sixth lens (7), an optical filter (8) and an image surface (9) from an object side, wherein the first lens (1) is in a falcate spherical lens, the second lens (2) is a double concave aspherical lens, and the third lens (3) is a falcate aspherical lens; the fourth lens (5) is a double convex spherical lens, the fifth lens (6) is a falcate aspherical lens, and the sixth lens (7) is a double convex aspherical lens.

Description

【Technical field】 [0001] The invention relates to an optical system, in particular to a high-pixel, low-temperature drift, low-cost, infrared confocal optical system applied to vehicle-mounted and monitoring systems. 【Background technique】 [0002] At present, the high-pixel and infrared confocal optical systems used in vehicles and monitoring generally have such shortcomings: high cost, large temperature drift, short service life, etc. At present, there is no lens on the market that can overcome the above shortcomings at the same time. There are only a few lenses that improve certain aspects at the expense of other aspects. It is greatly affected by the environment, and clear pictures can be taken at room temperature, but clear pictures cannot be taken in high-temperature and low-temperature environments, or the system cannot work normally in a short period of time in complex environments, etc., which is far from meeting the needs of vehicles, The monitoring system require...

AI Technical Summary

Problems solved by technology

[0002] At present, the high-pixel and infrared confocal optical systems used in vehicles and monitoring generally have such shortcomings: high cost, large temperature drift, short service life, etc.

At present, there is no lens on the market that can overcome the above shortcomings at the same time. There are only a few lenses that improve certain aspects at the expense of other aspects. It is greatly affected by the environment, and clear pictures can be taken at room temperature, but clear pictures cannot be taken in high-temperature and low-temperature environments, or the system cannot work normally in a short period of time in complex environments, etc., which is far from meeting the needs of vehicles, The monitoring system requires image clarity and authenticity in complex environments and long-term normal use. At present, there is no lens on the market that overcomes all the above shortcomings.

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