FR654436A - Perfectionnement aux dispositifs de projection lumineuse - Google Patents

Perfectionnement aux dispositifs de projection lumineuse

Info

Publication number
FR654436A
FR654436A FR654436DA FR654436A FR 654436 A FR654436 A FR 654436A FR 654436D A FR654436D A FR 654436DA FR 654436 A FR654436 A FR 654436A
Authority
FR
France
Prior art keywords
improvement
light projection
projection devices
devices
light
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)
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.)
Usines Gallus SA Des
Original Assignee
Usines Gallus SA Des
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 Usines Gallus SA Des filed Critical Usines Gallus SA Des
Application granted granted Critical
Publication of FR654436A publication Critical patent/FR654436A/fr
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
    • F21V5/00—Refractors for light sources
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR654436D 1928-05-18 1928-05-18 Perfectionnement aux dispositifs de projection lumineuse Expired FR654436A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR654436T 1928-05-18

Publications (1)

Publication Number Publication Date
FR654436A true FR654436A (fr) 1929-04-05

Family

ID=9006481

Family Applications (1)

Application Number Title Priority Date Filing Date
FR654436D Expired FR654436A (fr) 1928-05-18 1928-05-18 Perfectionnement aux dispositifs de projection lumineuse

Country Status (1)

Country Link
FR (1) FR654436A (fr)

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