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FR943577A - Condensateur pour appareils de projection - Google Patents

Condensateur pour appareils de projection

Info

Publication number
FR943577A
FR943577A FR943577DA FR943577A FR 943577 A FR943577 A FR 943577A FR 943577D A FR943577D A FR 943577DA FR 943577 A FR943577 A FR 943577A
Authority
FR
France
Prior art keywords
capacitor
projection devices
projection
devices
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
Other languages
English (en)
Inventor
Jean-Rene Beurotte
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 filed Critical
Application granted granted Critical
Publication of FR943577A publication Critical patent/FR943577A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR943577D 1947-03-26 1947-03-26 Condensateur pour appareils de projection Expired FR943577A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR943577T 1947-03-26

Publications (1)

Publication Number Publication Date
FR943577A true FR943577A (fr) 1949-03-11

Family

ID=9471331

Family Applications (1)

Application Number Title Priority Date Filing Date
FR943577D Expired FR943577A (fr) 1947-03-26 1947-03-26 Condensateur pour appareils de projection

Country Status (1)

Country Link
FR (1) FR943577A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249205A (en) * 1978-12-11 1981-02-03 Marvin P. Hodges Aspheric projection lens system utilizing concave image
US4534614A (en) * 1980-07-01 1985-08-13 Plantronics, Inc. Aspherical lens for concentrating diffuse optical radiation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249205A (en) * 1978-12-11 1981-02-03 Marvin P. Hodges Aspheric projection lens system utilizing concave image
US4534614A (en) * 1980-07-01 1985-08-13 Plantronics, Inc. Aspherical lens for concentrating diffuse optical radiation

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