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JPS57125825A - Diffraction grating spectroscope - Google Patents

Diffraction grating spectroscope

Info

Publication number
JPS57125825A
JPS57125825A JP1085681A JP1085681A JPS57125825A JP S57125825 A JPS57125825 A JP S57125825A JP 1085681 A JP1085681 A JP 1085681A JP 1085681 A JP1085681 A JP 1085681A JP S57125825 A JPS57125825 A JP S57125825A
Authority
JP
Japan
Prior art keywords
grating
thermal expansion
coefficient
diffraction grating
nearly
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
JP1085681A
Other languages
Japanese (ja)
Inventor
Fumiaki Urakawa
Shinya Yamashita
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.)
Nikon Corp
Original Assignee
Nikon Corp
Nippon Kogaku KK
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 Nikon Corp, Nippon Kogaku KK filed Critical Nikon Corp
Priority to JP1085681A priority Critical patent/JPS57125825A/en
Publication of JPS57125825A publication Critical patent/JPS57125825A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/12—Generating the spectrum; Monochromators
    • G01J3/18—Generating the spectrum; Monochromators using diffraction elements, e.g. grating

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

PURPOSE:To cope with the fluctuation of environmental temperature well, by nearly equalizing the coefficient of thermal expansion of a diffraction grating to that of a supporting structure body supporting the diffraction grating rotatably. CONSTITUTION:A glass diffraction grating 1 is placed on a metallic rotating piate 2 and the first sign bar 3 made of the material having the smaller coefficient of thermal expansion than the grating 1 is fixed on the plate 2 and moreover, the second metallic sign bar 4 is connected to the bar 3. In case of using the material having the coefficient of thermal expansion nearly the same to glass, all of a supporing structure 10 consisting of the sign bar and rotating plate may be constructed by said material. In such a manner, the coefficient of thermal expansion of the grating 1 is made nearly the same to the totalized coefficient of thermal expansion of the structure 10. The value of d/l is not varied and the accuracy of wavelength is not lowered, even if the grating 1 and the structure 10 are expander or contracted by a temperature because a wavelength lambda of emitted light is proportional to a groove interval (d) of the grating 1 and is reversly propotional to a length (l) of the structure 10.
JP1085681A 1981-01-29 1981-01-29 Diffraction grating spectroscope Pending JPS57125825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1085681A JPS57125825A (en) 1981-01-29 1981-01-29 Diffraction grating spectroscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1085681A JPS57125825A (en) 1981-01-29 1981-01-29 Diffraction grating spectroscope

Publications (1)

Publication Number Publication Date
JPS57125825A true JPS57125825A (en) 1982-08-05

Family

ID=11761990

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1085681A Pending JPS57125825A (en) 1981-01-29 1981-01-29 Diffraction grating spectroscope

Country Status (1)

Country Link
JP (1) JPS57125825A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003062776A1 (en) * 2002-01-24 2003-07-31 Nikon Corporation Spectroscope

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003062776A1 (en) * 2002-01-24 2003-07-31 Nikon Corporation Spectroscope
US7173695B2 (en) 2002-01-24 2007-02-06 Nikon Corporation Spectroscope with thermal compensation mechanism

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