GB781139A - Improvements in or relating to exposure meters for x-ray photography - Google Patents
Improvements in or relating to exposure meters for x-ray photographyInfo
- Publication number
- GB781139A GB781139A GB31102/55A GB3110255A GB781139A GB 781139 A GB781139 A GB 781139A GB 31102/55 A GB31102/55 A GB 31102/55A GB 3110255 A GB3110255 A GB 3110255A GB 781139 A GB781139 A GB 781139A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lead
- sheet
- thickness
- film
- photographic
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/08—Photographic dosimeters
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Radiation-Therapy Devices (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
781,139. X-ray apparatus. MASSIOT & CIE. SOC. ANON., G. Oct. 31, 1955 [Nov. 8, 1954], No. 31102/55. Class 98(1) Means for measuring radiation dosage over a wide range of wave-lengths includes at least two photographic emulsions with different sensitivity characteristics over the range, in juxtaposition with filtering means of different characteristics. In Fig. 2, photographic films 1 and 2 are placed in juxtaposition with a copper sheet 6 and tantalum sheets 7, 8 and 9. In Fig. 10, a photographic film 21 is backed by a lead sheet 22 of 2 mm. thickness, a copper sheet 23 of 2.07 mm. thickness, and a tantalum sheet 24 of 0.1 mm. thickness. A second photographic film 25, which is three times as sensitive as film 21, is placed behind these sheets, and is backed by a lead wall 26. In Fig. 12, a photographic film 31 is backed by a lead sheet 32 of 0.2 mm. thicK- ness, a tin sheet 33 of 0.7 mm. thickness, and a lead sheet 34 of 0.2 mm. thickness. Behind these sheets is placed a second photographic film 35, ten time as sensitive as film 31, with a lead backing 36. The films and other Layers may be packed in a light sealed pocket carried on the person in a plastic packing. Alternatively, they may be placed in a lead lined box, which box is in turn carried in a casing 13, Fig. 7. A spring clasp 15 inserted in opposite slots 14 in the casing 13 serves to retain the lead lined box in the casing, and to act as a means of suspension.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR781139X | 1954-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB781139A true GB781139A (en) | 1957-08-14 |
Family
ID=9207264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31102/55A Expired GB781139A (en) | 1954-11-08 | 1955-10-31 | Improvements in or relating to exposure meters for x-ray photography |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB781139A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012032168A1 (en) * | 2010-09-10 | 2012-03-15 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Method for measuring tritium or other radiation for dismantling |
-
1955
- 1955-10-31 GB GB31102/55A patent/GB781139A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012032168A1 (en) * | 2010-09-10 | 2012-03-15 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Method for measuring tritium or other radiation for dismantling |
| FR2964752A1 (en) * | 2010-09-10 | 2012-03-16 | Commissariat Energie Atomique | PROCESS FOR MEASURING TRITIUM OR OTHER RADIATION FOR DISMANTLING |
| JP2013541001A (en) * | 2010-09-10 | 2013-11-07 | コミッサリア ア レネルジ アトミック エ オー エネルジス アルテルナティヴス | How to measure tritium or other radiation for dismantling |
| US8610087B2 (en) | 2010-09-10 | 2013-12-17 | Commissariat à l'Energie Atomique et aux Energies Alternatives | Method for measuring tritium or other radiation for dismantling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SE7608637L (en) | COLLECTION CONTAINER FOR PHOTOGRAPHS AND RELATED FILM STRAPS | |
| US2747103A (en) | Radiation detection devices | |
| US2387887A (en) | X-ray dosage indicator | |
| JPS5356025A (en) | Device for developing photographic film | |
| SE403194B (en) | FILM CASSETTE HOLDER FOR X-RAY STAND | |
| GB781139A (en) | Improvements in or relating to exposure meters for x-ray photography | |
| GB1230182A (en) | ||
| JPS5272226A (en) | Color photography | |
| GB2050203B (en) | Apparatus for developing photographic film | |
| FR2328220A1 (en) | PHOTOGRAPHIC FILMS INCLUDING LAYERS OF SUBSTRATUM | |
| FR2406223B1 (en) | PHOTOGRAPHIC SHEET POSITIONING DEVICE FOR PHOTOGRAPHIC FILM PROCESSING DEVICE | |
| CH475581A (en) | Photographic film developing apparatus | |
| US2707237A (en) | Radiation detection devices | |
| US2928946A (en) | Method of and device for correcting the x-ray spectral sensitivity of photographic emulsions, and products obtained therefrom | |
| CA1010701A (en) | Film cartridge for photographic camera | |
| FR2286410A1 (en) | FRAME COUNT INDICATOR FOR PHOTOGRAPHIC FILM PRINTERS | |
| JPS51115791A (en) | Multi-layer film-type x-ray photographic device for the jaw | |
| AU475156B2 (en) | Daylight-loading film-holder for exposing x-ray film | |
| GB339215A (en) | Improved method and apparatus for use in making x-ray photographs | |
| GB901163A (en) | A photographic film pack for accurately measuring the quantity or dosage of energy rich radiation | |
| SU676879A1 (en) | Exposure meter for photographic printing | |
| GB1235431A (en) | Improvements in and relating to the development of colour-reversal silver halide photographic films | |
| GB591628A (en) | Improvements in or relating to photography | |
| JPS5550242A (en) | Radiation transmission photographic film | |
| GB124931A (en) | Light Proof Container for Photographic Films when used to make X-ray Negatives or Pictures of the Teeth. |