GB712114A - Improvements relating to spectrographic arc alignment - Google Patents
Improvements relating to spectrographic arc alignmentInfo
- 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
Links
- 230000003287 optical effect Effects 0.000 abstract 3
- 238000005286 illumination Methods 0.000 abstract 2
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
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.
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)
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 |
-
1951
- 1951-08-03 GB GB1849851A patent/GB712114A/en not_active Expired
Cited By (1)
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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