IT1019363B - Perfezionamento nelle unita ottiche di segnalazione in partico lare per semafori e simili - Google Patents

Perfezionamento nelle unita ottiche di segnalazione in partico lare per semafori e simili

Info

Publication number
IT1019363B
IT1019363B IT53155/74A IT5315574A IT1019363B IT 1019363 B IT1019363 B IT 1019363B IT 53155/74 A IT53155/74 A IT 53155/74A IT 5315574 A IT5315574 A IT 5315574A IT 1019363 B IT1019363 B IT 1019363B
Authority
IT
Italy
Prior art keywords
improvement
similar
traffic lights
optical signaling
signaling units
Prior art date
Application number
IT53155/74A
Other languages
English (en)
Italian (it)
Original Assignee
Minnesota Mining & Mfg
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 Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Application granted granted Critical
Publication of IT1019363B publication Critical patent/IT1019363B/it

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
    • 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
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Traffic Control Systems (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Light Guides In General And Applications Therefor (AREA)
IT53155/74A 1973-09-24 1974-09-23 Perfezionamento nelle unita ottiche di segnalazione in partico lare per semafori e simili IT1019363B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US400253A US3894228A (en) 1973-09-24 1973-09-24 Light control device

Publications (1)

Publication Number Publication Date
IT1019363B true IT1019363B (it) 1977-11-10

Family

ID=23582844

Family Applications (1)

Application Number Title Priority Date Filing Date
IT53155/74A IT1019363B (it) 1973-09-24 1974-09-23 Perfezionamento nelle unita ottiche di segnalazione in partico lare per semafori e simili

Country Status (5)

Country Link
US (1) US3894228A (enrdf_load_stackoverflow)
JP (1) JPS5060244A (enrdf_load_stackoverflow)
DE (1) DE2445365A1 (enrdf_load_stackoverflow)
FR (1) FR2245001A1 (enrdf_load_stackoverflow)
IT (1) IT1019363B (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462721A1 (fr) * 1979-07-30 1981-02-13 Radiall Sa Dispositif pour regler le niveau de la puissance lumineuse emise a l'extremite d'une fibre optique
DE3605000A1 (de) * 1985-02-22 1986-09-04 Sharp Kk Beleuchtungsvorrichtung
USRE40227E1 (en) 1985-11-21 2008-04-08 3M Innovative Properties Company Totally internally reflecting thin, flexible film
JPS6413609U (enrdf_load_stackoverflow) * 1987-07-10 1989-01-24
JP2574121Y2 (ja) * 1991-12-27 1998-06-11 株式会社ニフコ 壁材への部品固定具
US5475533A (en) * 1993-08-02 1995-12-12 Applied Physics Research, L.P. Apparatus for enhancing the brightness of an image and method of making the same
CH690657A5 (de) * 1993-12-01 2000-11-30 Olga Raimondi Staeuble Richtblende für Beleuchtungskörper.
JPH10276131A (ja) * 1997-03-28 1998-10-13 Victor Co Of Japan Ltd 光送受信装置
EP1869362B1 (en) 2005-04-12 2020-09-23 Planmeca Oy Operation light in particular for dental treatment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1664536A (en) * 1926-08-24 1928-04-03 Newton S Bement Traffic light
US2540389A (en) * 1946-02-21 1951-02-06 Elwood Wiles Signal light ray director
US2539927A (en) * 1948-10-30 1951-01-30 Ramminger William Antiglare headlight
US2683799A (en) * 1951-05-10 1954-07-13 Day Brite Lighting Inc Electric lighting fixture with louver members
US3275820A (en) * 1963-12-26 1966-09-27 Joseph M Szarkowski Illuminating system
US3543235A (en) * 1969-05-19 1970-11-24 Gulf & Western Industries Adjustable light beam director having removable verticle baffles
US3618014A (en) * 1969-08-27 1971-11-02 Minnesota Mining & Mfg Variable indication control signal

Also Published As

Publication number Publication date
FR2245001A1 (enrdf_load_stackoverflow) 1975-04-18
US3894228A (en) 1975-07-08
DE2445365A1 (de) 1975-03-27
JPS5060244A (enrdf_load_stackoverflow) 1975-05-24

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