Infrared gas detector
AssigneeDenso Corporation
InventorsKouji Uchida, Takahiko Yoshida
Life of this patent
Estimating the term…
Abstract
An infrared gas detector includes an infrared light source for emitting infrared light, an infrared sensor for detecting the infrared light from the infrared light source, and a housing having a gas cell which accommodates the infrared light source and the infrared sensor. The internal surface of the gas cell is defined as an ellipsoidal surface. The positions of the infrared light source and the infrared sensor are respectively determined based on two different focal points of the ellipsoidal surface of the gas cell to efficiently focus the infrared light from the infrared light source on the infrared sensor.
Claims12
An infrared gas detector comprising:
- an infrared light source for emitting infrared light;
- an infrared sensor for detecting the infrared light emitted from the infrared light source;
- and
- a housing having an ellipsoidal interior surface that defines an interior space in which the infrared light source and the infrared sensor are disposed and a target gas to be measured is introduced, the infrared light source and the infrared sensor being positioned relative to two respective focal points of the ellipsoidal interior space.
An infrared gas detector comprising:
- an infrared light source for emitting infrared light;
- an infrared sensor for detecting the infrared light from the infrared light source;
- and
- a housing having an interior space in which the infrared light source and the infrared sensor are disposed, and a port for introducing a target gas to be measured to a space between the infrared light source and the infrared sensor,
- the interior space of the housing having a first curved surface and a second curved surface,
- the first curved surface for directing the infrared light in a direction of the infrared sensor, and
- the second curved surface for collecting the infrared light on the infrared sensor.
An infrared gas detector comprising:
- an infrared sensing device for detecting infrared light;
- an infrared light emitter for irradiating the infrared sensing device through a space provided between the infrared sensing device and the infrared light emitter, the space being supplied with a target gas to be measured;
- and
- an infrared reflector that collects the infrared light from the infrared light emitter onto the infrared sensing device.
Dependencies are inferred from the claim text.