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
Application number
GB7594/19A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Optique & De Mecanique De Haut
Original Assignee
Optique & De Mecanique De Haut
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Optique & De Mecanique De Haut filed Critical Optique & De Mecanique De Haut
Publication of GB127800A publication Critical patent/GB127800A/en
Expired legal-status Critical Current

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.
GB7594/19A 1918-10-09 1919-03-26 Improved Apparatus for Rendering the True or Apparent Focal Length of Objectives Independent of Changes of Temperature. Expired GB127800A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5210650A (en) * 1992-03-31 1993-05-11 Eastman Kodak Company Compact, passively athermalized optical assembly
US5270869A (en) * 1992-12-23 1993-12-14 Eastman Kodak Company Passively athermalized optical assembly incorporating laminate fiber compensation ring
US5270870A (en) * 1992-12-23 1993-12-14 Eastman Kodak Company Athermalized beam source and collimator lens assembly
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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5210650A (en) * 1992-03-31 1993-05-11 Eastman Kodak Company Compact, passively athermalized optical assembly
US5270869A (en) * 1992-12-23 1993-12-14 Eastman Kodak Company Passively athermalized optical assembly incorporating laminate fiber compensation ring
US5270870A (en) * 1992-12-23 1993-12-14 Eastman Kodak Company Athermalized beam source and collimator lens assembly
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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