FR860577A - Device for obtaining light indications in the dark without visible radiation - Google Patents
Device for obtaining light indications in the dark without visible radiationInfo
- 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
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)
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) |
-
1939
- 1939-09-30 FR FR860577D patent/FR860577A/en not_active Expired
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