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GB712114A - Improvements relating to spectrographic arc alignment - Google Patents

Improvements relating to spectrographic arc alignment

Info

Publication number
GB712114A
GB712114A GB1849851A GB1849851A GB712114A GB 712114 A GB712114 A GB 712114A GB 1849851 A GB1849851 A GB 1849851A GB 1849851 A GB1849851 A GB 1849851A GB 712114 A GB712114 A GB 712114A
Authority
GB
United Kingdom
Prior art keywords
image
movement
axis
optical axis
concave mirror
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.)
Expired
Application number
GB1849851A
Inventor
Herbert Macdonald Davis
Frederick William John Garton
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.)
NAT RES DEV
National Research Development Corp UK
Original Assignee
NAT RES DEV
National Research Development Corp UK
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 NAT RES DEV, National Research Development Corp UK filed Critical NAT RES DEV
Priority to GB1849851A priority Critical patent/GB712114A/en
Publication of GB712114A publication Critical patent/GB712114A/en
Expired 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
    • G01J3/02—Details
    • 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
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
    • G01J1/22—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using a variable element in the light-path, e.g. filter, polarising means
    • G01J1/24—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using a variable element in the light-path, e.g. filter, polarising means using electric radiation detectors
    • G01J1/26—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using a variable element in the light-path, e.g. filter, polarising means using electric radiation detectors adapted for automatic variation of the measured or reference value
    • 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
    • G01J3/02—Details
    • G01J3/027—Control of working procedures of a spectrometer; Failure detection; Bandwidth calculation
    • 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
    • G01J3/02—Details
    • G01J3/0289—Field-of-view determination; Aiming or pointing of a spectrometer; Adjusting alignment; Encoding angular position; Size of measurement area; Position tracking

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

712,114. Photo-electric control systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. 3, 1952 [Aug. 3, 1951], No. 18498/51 Class 40 (3). [Also in Group XXXV] Apparatus for maintaining the image of a light source capable of slight lateral movement on a required optical axis by means of a concave mirror, comprises means for focusing the image between two photo cells, so that uneven illumination of the cells produced by movement of the source provides a voltage for rotating the concave mirror to reposition the image on the axis. As shown in the Figure the light from arc electrodes 2 is imaged by concave mirror 3 at a point S on the optical axis A - A of a spectrograph, whereby light from S is focused by a lens 6 to illuminate two photo cells 7 by an equal amount. Movement of the image S from the axis A - A unbalances the illumination of photo cells 7, whose output after amplification is applied to a moving coil movement 8 of the type described in Specification 677,739, [Group XXXV], to rotate the mirror 3 about an axis 4, bringing the image S back on to the optical axis A - A. An alternative moving coil movement employing a loud-speaker type permanent magnet is also described.
GB1849851A 1951-08-03 1951-08-03 Improvements relating to spectrographic arc alignment Expired GB712114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1849851A GB712114A (en) 1951-08-03 1951-08-03 Improvements relating to spectrographic arc alignment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1849851A GB712114A (en) 1951-08-03 1951-08-03 Improvements relating to spectrographic arc alignment

Publications (1)

Publication Number Publication Date
GB712114A true GB712114A (en) 1954-07-21

Family

ID=10113461

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1849851A Expired GB712114A (en) 1951-08-03 1951-08-03 Improvements relating to spectrographic arc alignment

Country Status (1)

Country Link
GB (1) GB712114A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2837959A (en) * 1955-02-17 1958-06-10 Baird Atomic Inc Automatic means for aligning spectroscopic components

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2837959A (en) * 1955-02-17 1958-06-10 Baird Atomic Inc Automatic means for aligning spectroscopic components

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