FR2205678B1 - - Google Patents

Info

Publication number
FR2205678B1
FR2205678B1 FR7239519A FR7239519A FR2205678B1 FR 2205678 B1 FR2205678 B1 FR 2205678B1 FR 7239519 A FR7239519 A FR 7239519A FR 7239519 A FR7239519 A FR 7239519A FR 2205678 B1 FR2205678 B1 FR 2205678B1
Authority
FR
France
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
FR7239519A
Other languages
French (fr)
Other versions
FR2205678A1 (en:Method
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.)
Marie G R P
Original Assignee
Marie G R P
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 Marie G R P filed Critical Marie G R P
Priority to FR7239519A priority Critical patent/FR2205678B1/fr
Priority to US410216A priority patent/US3877789A/en
Priority to GB5045073A priority patent/GB1441975A/en
Priority to DE2355655A priority patent/DE2355655C3/de
Priority to JP48125888A priority patent/JPS49135552A/ja
Publication of FR2205678A1 publication Critical patent/FR2205678A1/fr
Application granted granted Critical
Publication of FR2205678B1 publication Critical patent/FR2205678B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/18—Focusing aids

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR7239519A 1972-11-08 1972-11-08 Expired FR2205678B1 (en:Method)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7239519A FR2205678B1 (en:Method) 1972-11-08 1972-11-08
US410216A US3877789A (en) 1972-11-08 1973-10-26 Mode transformer for light or millimeter electromagnetic waves
GB5045073A GB1441975A (en) 1972-11-08 1973-10-30 Mode transformer for light or millimetre electromagnetic waves
DE2355655A DE2355655C3 (de) 1972-11-08 1973-11-07 Vorrichtung zum Umwandeln eines Strahls elektromagnetischer Energie mit linearer Polarisierung der Welle
JP48125888A JPS49135552A (en:Method) 1972-11-08 1973-11-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7239519A FR2205678B1 (en:Method) 1972-11-08 1972-11-08

Publications (2)

Publication Number Publication Date
FR2205678A1 FR2205678A1 (en:Method) 1974-05-31
FR2205678B1 true FR2205678B1 (en:Method) 1975-09-12

Family

ID=9106820

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7239519A Expired FR2205678B1 (en:Method) 1972-11-08 1972-11-08

Country Status (1)

Country Link
FR (1) FR2205678B1 (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT374944B (de) * 1981-11-02 1984-06-12 Philips Nv Vorrichtung zum lesen eines aufzeichnungstraegers mit einer optisch lesbaren, spurfoermig angeordneten datenstruktur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2403667A2 (fr) * 1977-09-19 1979-04-13 Marie G R P Convertisseurs de mode de polarisation pour faisceaux laser et generateurs de plasma les utilisant
FR2413678A1 (fr) * 1977-12-28 1979-07-27 Marie G R P Convertisseurs de mode d'une onde non confinante en une onde confinante dans l'infrarouge lointain

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT374944B (de) * 1981-11-02 1984-06-12 Philips Nv Vorrichtung zum lesen eines aufzeichnungstraegers mit einer optisch lesbaren, spurfoermig angeordneten datenstruktur

Also Published As

Publication number Publication date
FR2205678A1 (en:Method) 1974-05-31

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Legal Events

Date Code Title Description
ST Notification of lapse