FR1055072A - Projector refinements - Google Patents

Projector refinements

Info

Publication number
FR1055072A
FR1055072A FR1055072DA FR1055072A FR 1055072 A FR1055072 A FR 1055072A FR 1055072D A FR1055072D A FR 1055072DA FR 1055072 A FR1055072 A FR 1055072A
Authority
FR
France
Prior art keywords
refinements
projector
projector refinements
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
French (fr)
Inventor
Pierre-Raymond Ginane
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 FR1055072A publication Critical patent/FR1055072A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR1055072D 1952-04-22 1952-04-22 Projector refinements Expired FR1055072A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1055072T 1952-04-22

Publications (1)

Publication Number Publication Date
FR1055072A true FR1055072A (en) 1954-02-16

Family

ID=9596723

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1055072D Expired FR1055072A (en) 1952-04-22 1952-04-22 Projector refinements

Country Status (1)

Country Link
FR (1) FR1055072A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283142A (en) * 1963-07-01 1966-11-01 Miller L Freeman Light reflectors
EP0509630A2 (en) * 1991-02-21 1992-10-21 DOLGOFF, Eugene A high efficiency light valve projection system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283142A (en) * 1963-07-01 1966-11-01 Miller L Freeman Light reflectors
EP0509630A2 (en) * 1991-02-21 1992-10-21 DOLGOFF, Eugene A high efficiency light valve projection system
EP0509630A3 (en) * 1991-02-21 1993-07-14 Eugene Dolgoff A high efficiency light valve projection system

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