Patent
Non-dispersive infrared gas sensor with light concentration means
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TLDR
In this paper, a non-dispersive infrared gas sensor with a light concentration unit is provided to improve the accuracy of a device by detecting a small amount of gas by maximally concentrating lights.Abstract:
A non-dispersive infrared gas sensor with a light concentration unit is provided to improve the accuracy of a device by detecting a small amount of gas by maximally concentrating lights using a light concentration unit. A non-dispersive infrared gas sensor with a light concentration unit includes an optical cavity(20) and a reflecting mirror(11). The reflecting mirror has a main reflecting mirror(21) in a shape of a parabola, a sub-reflecting mirror(31) in a shape of parabola, and a parabolic mirror(22). The sub-reflecting mirror is formed on one end portion of the main reflecting mirror in a long axis direction as one body. The parabolic mirror is formed on the other end side as one body to encompass a light source(12). The light source is formed on a focus of the parabolic mirror. An optical barrel(33) is formed on the other end of the main reflecting mirror.read more
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Patent
Optical wave guide having multiple independent optical path and optical gas sensor using that
TL;DR: The present disclosure relates to an optical gas sensor including at least: an optical wave guide including a first elliptical mirror formed along at least part of a first 3D ellipsoid and having a first focal point and a second focal point as discussed by the authors.
Patent
Optical cavity for multi-gas sensor
Jeong Ik Park,박정익 +1 more
TL;DR: In this paper, an optical cavity that is a core element in an NDIR (Non-Dispersive Infrared) gas sensor is presented, where the optical cavity is equipped with both long and short optical paths to be able to measure gases having high light absorption rates as well as gases having low light absorption rate at the same time.
Patent
Optical cavity for a multi gas sensor
TL;DR: In this article, an optical cavity for a multi gas sensor which does not increase the optical cavity of a multi-gas sensor is provided to simultaneously detect the two kind of gas which has different optical absorption rate and measured concentration domain.
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Planar reflective ring
TL;DR: In this paper, a gas detector system may comprise at least one emitter configured to emit radiation in a beam path; at least two focused spots at the at least single detector; and a ring reflector configured to direct the emitted radiation around the ring reflectors toward the one or more detector.
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Optical waveguide having plurality of independent optical paths, and optical gas sensor using same
Lee Seung Hwan,Jung Sang Ho +1 more
TL;DR: In this article, an optical waveguide has a plurality of independent optical paths, and an optical gas sensor using the same, where the virtual reference lines of the first and second oval mirrors have a predetermined angle to improve optical efficiency.
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