GB697207A - Improvements in or relating to a spectrum farming device - Google Patents
Improvements in or relating to a spectrum farming deviceInfo
- Publication number
- GB697207A GB697207A GB2861551A GB2861551A GB697207A GB 697207 A GB697207 A GB 697207A GB 2861551 A GB2861551 A GB 2861551A GB 2861551 A GB2861551 A GB 2861551A GB 697207 A GB697207 A GB 697207A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prism
- entrance slit
- spectrum
- spherical
- curvature
- 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 title abstract 3
- 238000009313 farming Methods 0.000 title 1
- 238000010586 diagram Methods 0.000 abstract 2
- 201000009310 astigmatism Diseases 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
- G01J3/12—Generating the spectrum; Monochromators
- G01J3/14—Generating the spectrum; Monochromators using refracting elements, e.g. prisms
- G01J3/16—Generating the spectrum; Monochromators using refracting elements, e.g. prisms with autocollimation
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
697,207. Spectroscopic apparatus. BECKMAN INSTRUMENTS, Inc. Dec. 6, 1951, No. 28615/51. Class 97 (i). A monochromator, or other spectroscopic apparatus comprises a Fery prism having a spherical front surface which is refractive and a spherical rear surface which is reflective, the centres of curvature of these surfaces being spaced apart along the circle diagram of the prism on which diagram is also an entrance slit located so that rays therefor are incident at substantially equal angles i on the front surface and are refracted thereby so as to be substantially normal to the rear surface whence they are reflected, refracted once again, and form a spectrum, the entrance slit being curved to a radius R equal to n<SP>2</SP>. f.cotan i/2(n<SP>2-1</SP>), where f is the focal length of the prism and n its refractive index, whereby a substantially linear image of the entrance slit is produced. Fig. 1 shows a curved entrance slit 12 light from which is reflected by a mirror 16 to the prism 10 having spherical front and rear surfaces 21, 22. This prism acts as a collimator and forms a spectrum, after reflection again at the mirror 16, adjacent the linear exit slit 13. The curvature of the entrance slit compensates the astigmatism introduced by the Fery prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2861551A GB697207A (en) | 1951-12-06 | 1951-12-06 | Improvements in or relating to a spectrum farming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2861551A GB697207A (en) | 1951-12-06 | 1951-12-06 | Improvements in or relating to a spectrum farming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB697207A true GB697207A (en) | 1953-09-16 |
Family
ID=10278394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2861551A Expired GB697207A (en) | 1951-12-06 | 1951-12-06 | Improvements in or relating to a spectrum farming device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB697207A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110941037A (en) * | 2019-12-16 | 2020-03-31 | 中国科学院长春光学精密机械与物理研究所 | Processing tool and processing method for Fery prism |
| WO2024059437A1 (en) * | 2022-09-16 | 2024-03-21 | Cymer, Llc | Spectral feature control apparatus |
-
1951
- 1951-12-06 GB GB2861551A patent/GB697207A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110941037A (en) * | 2019-12-16 | 2020-03-31 | 中国科学院长春光学精密机械与物理研究所 | Processing tool and processing method for Fery prism |
| WO2024059437A1 (en) * | 2022-09-16 | 2024-03-21 | Cymer, Llc | Spectral feature control apparatus |
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