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FR43149E - Optical device for lighting devices - Google Patents

Optical device for lighting devices

Info

Publication number
FR43149E
FR43149E FR43149DA FR43149E FR 43149 E FR43149 E FR 43149E FR 43149D A FR43149D A FR 43149DA FR 43149 E FR43149 E FR 43149E
Authority
FR
France
Prior art keywords
optical device
lighting devices
lighting
devices
optical
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
Jean Seme
Jean-Louis-Pierre-Ga Martin
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 FR43149E publication Critical patent/FR43149E/en
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
    • G03B21/10—Projectors with built-in or built-on screen

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR43149D 1932-10-19 1932-10-19 Optical device for lighting devices Expired FR43149E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR43149T 1932-10-19

Publications (1)

Publication Number Publication Date
FR43149E true FR43149E (en) 1934-02-12

Family

ID=8679150

Family Applications (1)

Application Number Title Priority Date Filing Date
FR43149D Expired FR43149E (en) 1932-10-19 1932-10-19 Optical device for lighting devices

Country Status (1)

Country Link
FR (1) FR43149E (en)

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