FR2472197B1 - - Google Patents

Info

Publication number
FR2472197B1
FR2472197B1 FR7930915A FR7930915A FR2472197B1 FR 2472197 B1 FR2472197 B1 FR 2472197B1 FR 7930915 A FR7930915 A FR 7930915A FR 7930915 A FR7930915 A FR 7930915A FR 2472197 B1 FR2472197 B1 FR 2472197B1
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
FR7930915A
Other versions
FR2472197A1 (fr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7930915A priority Critical patent/FR2472197A1/fr
Publication of FR2472197A1 publication Critical patent/FR2472197A1/fr
Application granted granted Critical
Publication of FR2472197B1 publication Critical patent/FR2472197B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/89—Optical components associated with the vessel
    • H01J2229/893—Optical components associated with the vessel using lenses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
FR7930915A 1979-12-18 1979-12-18 Lentille de fresnel et son application a la television Granted FR2472197A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7930915A FR2472197A1 (fr) 1979-12-18 1979-12-18 Lentille de fresnel et son application a la television

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7930915A FR2472197A1 (fr) 1979-12-18 1979-12-18 Lentille de fresnel et son application a la television

Publications (2)

Publication Number Publication Date
FR2472197A1 FR2472197A1 (fr) 1981-06-26
FR2472197B1 true FR2472197B1 (fr) 1984-04-20

Family

ID=9232862

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7930915A Granted FR2472197A1 (fr) 1979-12-18 1979-12-18 Lentille de fresnel et son application a la television

Country Status (1)

Country Link
FR (1) FR2472197A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2641381B1 (fr) * 1988-12-29 1991-04-05 Wajsbrot Henri Systeme telecommande d'agrandissement d'image source
FR2649799B1 (fr) * 1989-07-12 1993-05-28 Cintra Daniel Systeme optique pour l'agrandissement d'images
JP3092741B2 (ja) * 1991-11-05 2000-09-25 若竹 雅之 疑似発光面体及びそれに用いる光学色フィルタ板体、並びに疑似発光面体を用いた表示素子及び表示装置
CN1051157C (zh) * 1994-02-16 2000-04-05 美国3M公司 高架投影用的双槽式菲涅尔透镜
FR2815137A1 (fr) * 2000-10-05 2002-04-12 Gwenole Bocquet Elargissement d'angle pour projection virtuelle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1614020A1 (de) * 1967-08-18 1970-05-14 Georg Klein Abschirmung eines Raumes gegen hochfrequente Strahlen aus Bildroehren od.dgl.
JPS487050Y1 (fr) * 1968-10-28 1973-02-23
DE2035823A1 (de) * 1969-10-27 1971-04-29 Jenoptik Jena GmbH, χ 6900 Jena Optisches System mit einer Fresnel struktur auf mindestens einer seiner Flachen
DE2058303B2 (de) * 1970-11-27 1972-12-28 Fa. Carl Zeiss, 7920 Heidenheim Vorrichtung zur beobachtung von zeichen und bildern, insbesondere von sichtanzeigegeraeten (displays) mit eingeschalteter zwischenabbildung
FR2137099B3 (fr) * 1971-05-13 1974-03-08 Tavernier Andre
US3959580A (en) * 1973-08-20 1976-05-25 Martin Marietta Corporation Directly viewable stereoscopic projection system
SE418423B (sv) * 1974-08-21 1981-05-25 Minnesota Mining & Mfg Kondensor, serskilt for anvendning i en arbetsprojektor
US4130346A (en) * 1977-10-03 1978-12-19 Zenith Radio Corporation Super imposed fresnel lenses for channel indicators

Also Published As

Publication number Publication date
FR2472197A1 (fr) 1981-06-26

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Legal Events

Date Code Title Description
ST Notification of lapse