CH521648A - Device on a light signal system to eliminate the phantom light effect, especially in road traffic signal systems and signal lights for railway safety - Google Patents

Device on a light signal system to eliminate the phantom light effect, especially in road traffic signal systems and signal lights for railway safety

Info

Publication number
CH521648A
CH521648A CH1885570A CH1885570A CH521648A CH 521648 A CH521648 A CH 521648A CH 1885570 A CH1885570 A CH 1885570A CH 1885570 A CH1885570 A CH 1885570A CH 521648 A CH521648 A CH 521648A
Authority
CH
Switzerland
Prior art keywords
signal
light
eliminate
road traffic
railway safety
Prior art date
Application number
CH1885570A
Other languages
German (de)
Inventor
Waldemar Dipl Ing Gaertner
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of CH521648A publication Critical patent/CH521648A/en

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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/003—Controlling the distribution of the light emitted by adjustment of elements by interposition of elements with electrically controlled variable light transmissivity, e.g. liquid crystal elements or electrochromic devices
    • 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
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1313—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells specially adapted for a particular application
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Liquid Crystal (AREA)
CH1885570A 1970-01-12 1970-12-21 Device on a light signal system to eliminate the phantom light effect, especially in road traffic signal systems and signal lights for railway safety CH521648A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702001087 DE2001087C3 (en) 1970-01-12 1970-01-12 Device for eliminating the phantom light effect in light signals

Publications (1)

Publication Number Publication Date
CH521648A true CH521648A (en) 1972-04-15

Family

ID=5759423

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1885570A CH521648A (en) 1970-01-12 1970-12-21 Device on a light signal system to eliminate the phantom light effect, especially in road traffic signal systems and signal lights for railway safety

Country Status (6)

Country Link
AT (1) AT304311B (en)
BE (1) BE761380A (en)
CH (1) CH521648A (en)
DE (1) DE2001087C3 (en)
FR (1) FR2083023A5 (en)
SE (1) SE358948B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3139849A1 (en) * 1981-10-07 1983-04-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Electrical signalling arrangement
DE8812322U1 (en) * 1988-09-29 1988-12-08 Rohrer, Emil, 8901 Königsbrunn Covering lighting equipment on motor vehicles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE559343C (en) 1930-05-16 1932-09-19 Ver Eisenbahn Signalwerke G M Multi-aspect signal
DE740588C (en) 1939-10-12 1943-10-23 Ver Eisenbahn Signalwerke G M Monitoring device for light signal systems with two or more signal aspects controlled by relays

Also Published As

Publication number Publication date
DE2001087C3 (en) 1974-04-04
DE2001087B2 (en) 1973-08-30
FR2083023A5 (en) 1971-12-10
BE761380A (en) 1971-06-16
AT304311B (en) 1972-12-27
DE2001087A1 (en) 1971-07-22
SE358948B (en) 1973-08-13

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Legal Events

Date Code Title Description
PL Patent ceased