FR1173315A - Perfectionnements aux procédés d'éclairage - Google Patents

Perfectionnements aux procédés d'éclairage

Info

Publication number
FR1173315A
FR1173315A FR1173315DA FR1173315A FR 1173315 A FR1173315 A FR 1173315A FR 1173315D A FR1173315D A FR 1173315DA FR 1173315 A FR1173315 A FR 1173315A
Authority
FR
France
Prior art keywords
lighting processes
lighting
processes
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
Pierre-Antoine-Louis Guillot
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 FR1173315A publication Critical patent/FR1173315A/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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/02—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for simulating daylight
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/20—Dichroic filters, i.e. devices operating on the principle of wave interference to pass specific ranges of wavelengths while cancelling others
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
FR1173315D 1957-03-25 1957-03-25 Perfectionnements aux procédés d'éclairage Expired FR1173315A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1173315T 1957-03-25

Publications (1)

Publication Number Publication Date
FR1173315A true FR1173315A (fr) 1959-02-24

Family

ID=9658235

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1173315D Expired FR1173315A (fr) 1957-03-25 1957-03-25 Perfectionnements aux procédés d'éclairage

Country Status (1)

Country Link
FR (1) FR1173315A (fr)

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