FR769675A - Bi-focal projector - Google Patents

Bi-focal projector

Info

Publication number
FR769675A
FR769675A FR769675DA FR769675A FR 769675 A FR769675 A FR 769675A FR 769675D A FR769675D A FR 769675DA FR 769675 A FR769675 A FR 769675A
Authority
FR
France
Prior art keywords
focal projector
projector
focal
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)
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.)
Gallois & Compagine
Original Assignee
Gallois & Compagine
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 Gallois & Compagine filed Critical Gallois & Compagine
Application granted granted Critical
Publication of FR769675A publication Critical patent/FR769675A/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
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
    • F21S41/333—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with discontinuity at the junction between adjacent areas
    • 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
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR769675D 1934-01-29 1934-01-29 Bi-focal projector Expired FR769675A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR769675T 1934-01-29

Publications (1)

Publication Number Publication Date
FR769675A true FR769675A (en) 1934-08-31

Family

ID=9184893

Family Applications (1)

Application Number Title Priority Date Filing Date
FR769675D Expired FR769675A (en) 1934-01-29 1934-01-29 Bi-focal projector

Country Status (1)

Country Link
FR (1) FR769675A (en)

Similar Documents

Publication Publication Date Title
FR769675A (en) Bi-focal projector
FI16027A (en) Räfsa
FR788400A (en) Can
FI15775A (en) Dörrklinka
FI16059A (en) Stilsatsspännare
FI15755A (en) Slåttermaskinsskärverk
FI16039A (en) Centrifugalsorterare
FI15752A (en) Blylegering
FI15719A (en) Suksiside
FI15714A (en) Kombinerad vätske- och mätarpump
FI15703A (en) Vandringsverk
FI15692A (en) Hårklämma
FI15687A (en) Elektriskt urladdningsrör
FI15809A (en) Sektionsbokhylla
FI15677A (en) Filtreringapparat
FI15676A (en) Kylförfarande
FI15666A (en) Skidspänningsanordning
FI15665A (en) Skidbindning
FI15664A (en) Suksiside
FI15649A (en) Spritsrör
FI15641A (en) Pahvirove
FI15635A (en) Bränslepump
FI15633A (en) Mjölkningsapparat
FI15631A (en) Snesstörtapp
FI15781A (en) Suksiside