JPS5722538A - Retroreflector - Google Patents

Retroreflector

Info

Publication number
JPS5722538A
JPS5722538A JP9805380A JP9805380A JPS5722538A JP S5722538 A JPS5722538 A JP S5722538A JP 9805380 A JP9805380 A JP 9805380A JP 9805380 A JP9805380 A JP 9805380A JP S5722538 A JPS5722538 A JP S5722538A
Authority
JP
Japan
Prior art keywords
inputted
inverted
beam splitter
light
retroreflector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9805380A
Other languages
Japanese (ja)
Inventor
Hirobumi Kashiwara
Tadatami Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9805380A priority Critical patent/JPS5722538A/en
Publication of JPS5722538A publication Critical patent/JPS5722538A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To improve the analyzing accuracy by arranging a compact, inverted three-face mirror in a right triangular pyramid shape at the vertex of the retroreflector of an infrared gas analyzer, and increasing the intensity of the sensed light. CONSTITUTION:On the optical axis passing the vertex of the retroreflector 95, the compact, inverted three-face mirror 90, comprising three reflecting surfaces 104- 106 which cross at a right angle one another, is arranged so that said surface 104- 106 are aligned at a right angle with or in parallel with the three surfaces 101-103 of the reflector 95. The beam is outputted from the window W of a beam splitter BS with some width provided, reflected by the reflector 95 or by the inverted three- face mirror 96, and inputted to reflecting surfaces BSa and BSb of the beam splitter. Therefore, no light is inputted to the window W. Thus, the intensity of the light reflected by the beam splitter BS and inputted to a light receiving device is increased, and the measuring accuracy is heightened.
JP9805380A 1980-07-16 1980-07-16 Retroreflector Pending JPS5722538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9805380A JPS5722538A (en) 1980-07-16 1980-07-16 Retroreflector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9805380A JPS5722538A (en) 1980-07-16 1980-07-16 Retroreflector

Publications (1)

Publication Number Publication Date
JPS5722538A true JPS5722538A (en) 1982-02-05

Family

ID=14209490

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9805380A Pending JPS5722538A (en) 1980-07-16 1980-07-16 Retroreflector

Country Status (1)

Country Link
JP (1) JPS5722538A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5767976A (en) * 1996-03-22 1998-06-16 Dragerwerk Ag Laser diode gas sensor
US20120081692A1 (en) * 2010-09-30 2012-04-05 Kabushiki Kaisha Topcon Distance Measuring Instrument

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5767976A (en) * 1996-03-22 1998-06-16 Dragerwerk Ag Laser diode gas sensor
US20120081692A1 (en) * 2010-09-30 2012-04-05 Kabushiki Kaisha Topcon Distance Measuring Instrument
US8736819B2 (en) * 2010-09-30 2014-05-27 Kabushiki Kaisha Topcon Distance measuring instrument

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