Small long light path infrared gas sensor module
A gas sensor, long optical path technology, used in instruments, scientific instruments, material analysis by optical means, etc., can solve problems such as unfavorable long optical path and large light dispersion.
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[0017] Now, in combination with the accompanying drawings, take the small-sized long optical path infrared gas sensor module of an "M" shaped cavity formed by three rounds of cylindrical converging reflection inside the optical cavity / gas chamber as an example.
[0018] figure 1 A schematic diagram of the decomposition structure of the present invention is given, wherein the multi-reflection M-shaped optical cavity / air chamber includes two parts: the upper cover 3 of the cavity and the lower cover 5 of the cavity, and the upper and lower covers of the cavity are snapped together to form the infrared gas sensor module Optical Cavity / Gas Chamber. The inner surface finish of the upper cover 3 of the optical cavity and the lower cover 5 of the optical cavity shall not be less than 0.08, and the outer surface shall not be less than 6.4; The reflectivity is not lower than 95% requirement.
[0019] figure 2 A schematic diagram of the structure of the upper cover of the optical ca...
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