GB661497A - Spectrographic apparatus - Google Patents
Spectrographic apparatusInfo
- Publication number
- GB661497A GB661497A GB13833/49A GB1383349A GB661497A GB 661497 A GB661497 A GB 661497A GB 13833/49 A GB13833/49 A GB 13833/49A GB 1383349 A GB1383349 A GB 1383349A GB 661497 A GB661497 A GB 661497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mirror
- cells
- spectrum
- photo
- aperture
- 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
- 238000001228 spectrum Methods 0.000 abstract 4
- 230000035945 sensitivity Effects 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
- G01J3/28—Investigating the spectrum
- G01J3/30—Measuring the intensity of spectral lines directly on the spectrum itself
- G01J3/36—Investigating two or more bands of a spectrum by separate detectors
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
661,497. Photo-electric spectroscopes. COMPAGNIE DE PRODUITS CHIMIQUES ET ELECTROMETALLURGIQUES, ALAIS, FROGES, ET CAMARGUE. May 24, 1949 [May 24, 1948], No. 13833/49. Class 40 (iii). [Also in Group XX] A spectrum produced by a prism can be photographically recorded or examined by photo-electric cells. As shown in Fig. 2, the spectrum is projected on to an area Sp and a photographic slide Cp can be swung away and replaced by a box Cc containing two cells C2, C1, one of which is adjusted to view a standard line and the other of which can be traversed to receive any desired line ; the outputs of the two cells are compared to .determine the ratio of the intensity of the two lines. As shown in Fig. 3, a mirror M in its lower position allows the spectrum to fall on the photographic slide Cp, and when rotated into its upper position deflects the spectrum via mirror 10 to the photo-electric apparatus Cc; spring-controlled shutters 8, 7 cut off light from the mirror 10 and open aperture 11 when the mirror M is in its lower position, and when the mirror M is in its upper position, aperture 11 is closed and aperture 16 is open. The cells C1, C2, Fig. 4, may have their sensitivity adjusted by choice of resistances R1, R2; the cells feed amplifiers Al, A2 whose outputs are rectified at D1, D2 to charge condensers F1, F2, whose potentials are compared by a potentiometer circuit.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR661497X | 1948-05-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB661497A true GB661497A (en) | 1951-11-21 |
Family
ID=9010937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB13833/49A Expired GB661497A (en) | 1948-05-24 | 1949-05-24 | Spectrographic apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB661497A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE961711C (en) * | 1952-05-09 | 1957-04-11 | Max Planck Inst Eisenforschung | Method and device for monitoring the course of metallurgical processes which proceed with flame development by means of spectrophotometric analysis of the flame spectrum |
-
1949
- 1949-05-24 GB GB13833/49A patent/GB661497A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE961711C (en) * | 1952-05-09 | 1957-04-11 | Max Planck Inst Eisenforschung | Method and device for monitoring the course of metallurgical processes which proceed with flame development by means of spectrophotometric analysis of the flame spectrum |
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