GB127800A - Improved Apparatus for Rendering the True or Apparent Focal Length of Objectives Independent of Changes of Temperature. - Google Patents
Improved Apparatus for Rendering the True or Apparent Focal Length of Objectives Independent of Changes of Temperature.Info
- Publication number
- GB127800A GB127800A GB7594/19A GB759419A GB127800A GB 127800 A GB127800 A GB 127800A GB 7594/19 A GB7594/19 A GB 7594/19A GB 759419 A GB759419 A GB 759419A GB 127800 A GB127800 A GB 127800A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- changes
- focal length
- independent
- objectives
- 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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Lens Barrels (AREA)
- Lenses (AREA)
Abstract
127,800. Soc. d'Optique et de Mecanique de Haute Precision. Oct. 9,1918, [Convention date]. Drawings to Speci. fication. Lens mounts.-The focal length of an objective is rendered independent of changes in temperature by so constructing the lens mount that it is caused by the changes in temperature to vary the distance separating the optical elements of the objective and so to compensate the effect of temperature-change upon the glass of which the lenses are composed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR127800X | 1918-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB127800A true GB127800A (en) | 1919-06-12 |
Family
ID=32669480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7594/19A Expired GB127800A (en) | 1918-10-09 | 1919-03-26 | Improved Apparatus for Rendering the True or Apparent Focal Length of Objectives Independent of Changes of Temperature. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB127800A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5210650A (en) * | 1992-03-31 | 1993-05-11 | Eastman Kodak Company | Compact, passively athermalized optical assembly |
US5270870A (en) * | 1992-12-23 | 1993-12-14 | Eastman Kodak Company | Athermalized beam source and collimator lens assembly |
US5270869A (en) * | 1992-12-23 | 1993-12-14 | Eastman Kodak Company | Passively athermalized optical assembly incorporating laminate fiber compensation ring |
US5313333A (en) * | 1992-12-23 | 1994-05-17 | Estman Kodak Company | Method and apparatus for combined active and passive athermalization of an optical assembly |
US5317875A (en) * | 1992-12-23 | 1994-06-07 | Eastman Kodak Company | Thermally-controlled rotary displacement actuator operable for precise displacement of an optical or mechanical element |
EP1305658A2 (en) * | 2000-06-02 | 2003-05-02 | Lightchip, Inc. | Athermalization and pressure desensitization of diffraction grating based wdm devices |
-
1919
- 1919-03-26 GB GB7594/19A patent/GB127800A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5210650A (en) * | 1992-03-31 | 1993-05-11 | Eastman Kodak Company | Compact, passively athermalized optical assembly |
US5270870A (en) * | 1992-12-23 | 1993-12-14 | Eastman Kodak Company | Athermalized beam source and collimator lens assembly |
US5270869A (en) * | 1992-12-23 | 1993-12-14 | Eastman Kodak Company | Passively athermalized optical assembly incorporating laminate fiber compensation ring |
US5313333A (en) * | 1992-12-23 | 1994-05-17 | Estman Kodak Company | Method and apparatus for combined active and passive athermalization of an optical assembly |
US5317875A (en) * | 1992-12-23 | 1994-06-07 | Eastman Kodak Company | Thermally-controlled rotary displacement actuator operable for precise displacement of an optical or mechanical element |
EP1305658A2 (en) * | 2000-06-02 | 2003-05-02 | Lightchip, Inc. | Athermalization and pressure desensitization of diffraction grating based wdm devices |
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