FR860577A - Device for obtaining light indications in the dark without visible radiation - Google Patents

Device for obtaining light indications in the dark without visible radiation

Info

Publication number
FR860577A
FR860577A FR860577DA FR860577A FR 860577 A FR860577 A FR 860577A FR 860577D A FR860577D A FR 860577DA FR 860577 A FR860577 A FR 860577A
Authority
FR
France
Prior art keywords
dark
visible radiation
obtaining light
light indications
indications
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.)
ROGER FRANCOIS DESIRE NAVARRE
Original Assignee
ROGER FRANCOIS DESIRE NAVARRE
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 ROGER FRANCOIS DESIRE NAVARRE filed Critical ROGER FRANCOIS DESIRE NAVARRE
Application granted granted Critical
Publication of FR860577A publication Critical patent/FR860577A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/08—Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors
    • 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
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
FR860577D 1939-09-30 1939-09-30 Device for obtaining light indications in the dark without visible radiation Expired FR860577A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR860577T 1939-09-30

Publications (1)

Publication Number Publication Date
FR860577A true FR860577A (en) 1941-01-18

Family

ID=9334468

Family Applications (1)

Application Number Title Priority Date Filing Date
FR860577D Expired FR860577A (en) 1939-09-30 1939-09-30 Device for obtaining light indications in the dark without visible radiation

Country Status (1)

Country Link
FR (1) FR860577A (en)

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