FR627435A - Perfectionnements apportés à la projection de la lumière - Google Patents

Perfectionnements apportés à la projection de la lumière

Info

Publication number
FR627435A
FR627435A FR627435DA FR627435A FR 627435 A FR627435 A FR 627435A FR 627435D A FR627435D A FR 627435DA FR 627435 A FR627435 A FR 627435A
Authority
FR
France
Prior art keywords
projection
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)
Inventor
Louis John Steele
Haroud 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 FR627435A publication Critical patent/FR627435A/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
    • 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
    • F21S8/00—Lighting devices intended for fixed installation

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR627435D 1926-04-16 1926-12-31 Perfectionnements apportés à la projection de la lumière Expired FR627435A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB627435X 1926-04-16

Publications (1)

Publication Number Publication Date
FR627435A true FR627435A (fr) 1927-10-04

Family

ID=10488448

Family Applications (1)

Application Number Title Priority Date Filing Date
FR627435D Expired FR627435A (fr) 1926-04-16 1926-12-31 Perfectionnements apportés à la projection de la lumière

Country Status (1)

Country Link
FR (1) FR627435A (fr)

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