초록 ▼

An infrared optical gas sensor is improved with respect to the quality of the measured signal. The infrared radiation detectors (4, 6) used as the reference radiation and measuring radiation detectors include thin layers of a partially transparent material, which sends an electric measured signal th

An infrared optical gas sensor is improved with respect to the quality of the measured signal. The infrared radiation detectors (4, 6) used as the reference radiation and measuring radiation detectors include thin layers of a partially transparent material, which sends an electric measured signal that depends on the radiation intensity received. The infrared radiation detectors are arranged stacked one over the other and with an interposed narrow-band filter (3, 5) each, which are transparent at the measuring wavelength. The infrared radiation detectors have an electrically conductive coating on the top side and the underside and are contacted. The measuring radiation detector (6) follows the reference radiation detector (4) in the direction of the beam and the reference radiation detector (4) is transparent for at least part of the measuring radiation at the measuring wavelength, or the reference radiation detector follows the measuring radiation detector in the direction of the beam, and the measuring radiation detector is transparent for at least part of the reference radiation at the reference wavelength.

대표청구항 ▼

1. An infrared optical gas sensor comprising:a first pyroelectric radiation detector receivable of first and second types of radiation, and generating a first electrical signal proportional to an intensity of the first type of radiation received, said first radiation detector being transparent to th

1. An infrared optical gas sensor comprising:a first pyroelectric radiation detector receivable of first and second types of radiation, and generating a first electrical signal proportional to an intensity of the first type of radiation received, said first radiation detector being transparent to the second type of radiation; a second pyroelectric radiation detector arranged downstream of said first radiation detector in a direction of the radiation and receivable of the second type of radiation from said first detector, said second detector generating a second electrical signal proportional to an intensity of the second type of radiation received, said first pyroelectric radiation detector and said second pyroelectric radiation detector being stacked one over the other with said second radiation detector following said first radiation detector in the direction of the radiation.