FR489781A - Dimmable electric spotlight - Google Patents

Dimmable electric spotlight

Info

Publication number
FR489781A
FR489781A FR489781A FR489781DA FR489781A FR 489781 A FR489781 A FR 489781A FR 489781 A FR489781 A FR 489781A FR 489781D A FR489781D A FR 489781DA FR 489781 A FR489781 A FR 489781A
Authority
FR
France
Prior art keywords
spotlight
dimmable electric
dimmable
electric spotlight
electric
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
FR489781A
Other languages
French (fr)
Inventor
Emile Blancher
Eugene Charpentier
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
Application granted granted Critical
Publication of FR489781A publication Critical patent/FR489781A/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR489781A 1918-04-18 1918-04-18 Dimmable electric spotlight Expired FR489781A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR489781T 1918-04-18

Publications (1)

Publication Number Publication Date
FR489781A true FR489781A (en) 1919-03-11

Family

ID=1525987

Family Applications (1)

Application Number Title Priority Date Filing Date
FR489781A Expired FR489781A (en) 1918-04-18 1918-04-18 Dimmable electric spotlight

Country Status (1)

Country Link
FR (1) FR489781A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320442A (en) * 1979-10-11 1982-03-16 Kollmorgen Technologies Corporation Annular illuminator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320442A (en) * 1979-10-11 1982-03-16 Kollmorgen Technologies Corporation Annular illuminator

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