JPS5860256U

JPS5860256U - gas detection device

Info

Publication number: JPS5860256U
Application number: JP1982111671U
Authority: JP
Inventors: 篠原　宏爾; 吉河　満男; 伊藤　道春; 勝小瀬戸
Original assignee: 富士通株式会社
Priority date: 1982-07-22
Filing date: 1982-07-22
Publication date: 1983-04-23

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のガス検知装置における構成を示す概略図
、第２図は本考案によるガス検知装置の一実施例を示す
構成概略図である。１：レーザ光源、２：Ｌ／ンズ、３：半透明鏡、４：凹
面鏡、５．５’、５″：再帰性反射体、６：光電変換器
、７．７’、？’　：被測定ガス、８：平面反射鏡。FIG. 1 is a schematic diagram showing the structure of a conventional gas detection device, and FIG. 2 is a schematic diagram showing the structure of an embodiment of the gas detection device according to the present invention. 1: Laser light source, 2: L/Lens, 3: Semi-transparent mirror, 4: Concave mirror, 5.5', 5'': Retroreflector, 6: Photoelectric converter, 7.7', ?': Measured object Gas, 8: Planar reflector.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

コヒーレントな赤外線を出射する手段と、赤外線の光軸
上にあり、赤外線を平行光線に変換する凹面反射鏡と、
該反射鏡からの被測定空間を通過した赤外線を受けてそ
れを反射する再帰性反射体と、前記赤外線出射手段と前
記反射鏡との間にあり再帰性反射体からの反射光を光電
変換手段に導く半透明鏡よりなるガス検知装置において
、前記再帰性反射体を各被測定空間と対応して複数個設
けるとともに、前記凹面反射鏡と前記被測定空間の間に
凹面反射鏡からの赤外線が所望の再帰性反射体を照射す
るように偏向する回転反射鏡を設け、該反射鏡は反射面
と平行に伸びる軸および該軸と直交する軸を中心として
それぞれ独立して揺動可能に設けられたことを特徴とす
る赤外線によるガス検知装置。a means for emitting coherent infrared rays; a concave reflector located on the optical axis of the infrared rays and converting the infrared rays into parallel rays;
a retroreflector that receives infrared rays from the reflector that has passed through the measurement space and reflects the infrared rays, and a photoelectric converter that is located between the infrared ray emitting means and the reflector and converts the reflected light from the retroreflector into electricity. In the gas detection device, a plurality of the retroreflectors are provided corresponding to each space to be measured, and infrared rays from the concave reflector are provided between the concave reflector and the space to be measured. A rotating reflecting mirror is provided that deflects the beam so as to irradiate a desired retroreflector, and the reflecting mirror is provided to be able to swing independently about an axis extending parallel to the reflecting surface and an axis perpendicular to the axis. A gas detection device using infrared rays.