Patent ID: 8237924

Claim:
A long optical path gas monitor, which is open-typed and includes an optical generation part and a signal processing part, wherein said optical generation part comprising an emitter, a first planar reflection mirror installed in the optical path of the light ray emitted by said emitter, a first concave mirror installed in the optical path of the light ray reflected by said first planar reflection mirror, a second concave mirror installed in the optical path of the light ray reflected by said first concave mirror, a third concave mirror installed in the optical path of the light ray reflected by said second concave mirror, a fourth concave mirror installed in the optical path of the light ray reflected by said third concave mirror, and a receiver installed in the optical path of the light ray reflected by said fourth concave mirror; the signal processing part comprising sequentially connected an optical fiber, a spectrometer, a scanner, an optoelectronic detector and a computer, the input end of the optical fiber being connected to the receiver; and wherein the long optical path gas monitor further includes a position adjustment unit that comprises an optical support, a rotary mechanism and a dynamic device, said optical generation part is installed on the optical support, and the output end of the rotary mechanism is connected to the optical support to make the optical support rotate, and the input end of the rotary mechanism is connected to the input end of the dynamic device so as to provide power to the rotary mechanism.