FR802644A - Zero-brightness projector - Google Patents

Zero-brightness projector

Info

Publication number
FR802644A
FR802644A FR802644DA FR802644A FR 802644 A FR802644 A FR 802644A FR 802644D A FR802644D A FR 802644DA FR 802644 A FR802644 A FR 802644A
Authority
FR
France
Prior art keywords
zero
brightness projector
projector
brightness
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 Cibie
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 FR802644A publication Critical patent/FR802644A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • 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
    • F21S41/28—Cover glass

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR802644D 1935-05-28 1935-05-28 Zero-brightness projector Expired FR802644A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR802644T 1935-05-28

Publications (1)

Publication Number Publication Date
FR802644A true FR802644A (en) 1936-09-09

Family

ID=9249018

Family Applications (1)

Application Number Title Priority Date Filing Date
FR802644D Expired FR802644A (en) 1935-05-28 1935-05-28 Zero-brightness projector

Country Status (1)

Country Link
FR (1) FR802644A (en)

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