EP0351380A3 - Système optique pour signaux de différentes couleurs, lumineux en permanence, en particulier pour la signalisation ferroviaire - Google Patents

Système optique pour signaux de différentes couleurs, lumineux en permanence, en particulier pour la signalisation ferroviaire Download PDF

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Publication number
EP0351380A3
EP0351380A3 EP19890830310 EP89830310A EP0351380A3 EP 0351380 A3 EP0351380 A3 EP 0351380A3 EP 19890830310 EP19890830310 EP 19890830310 EP 89830310 A EP89830310 A EP 89830310A EP 0351380 A3 EP0351380 A3 EP 0351380A3
Authority
EP
European Patent Office
Prior art keywords
lens
aspherical
spherical
focal point
center
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.)
Granted
Application number
EP19890830310
Other languages
German (de)
English (en)
Other versions
EP0351380A2 (fr
EP0351380B1 (fr
Inventor
Luigi Vannini
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.)
LABORATORIO OTTICO FIORENTINO di VANNINI LUIGI
Original Assignee
LABORATORIO OTTICO FIORENTINO di VANNINI LUIGI
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 LABORATORIO OTTICO FIORENTINO di VANNINI LUIGI filed Critical LABORATORIO OTTICO FIORENTINO di VANNINI LUIGI
Publication of EP0351380A2 publication Critical patent/EP0351380A2/fr
Publication of EP0351380A3 publication Critical patent/EP0351380A3/fr
Application granted granted Critical
Publication of EP0351380B1 publication Critical patent/EP0351380B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/12—Visible signals
    • B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Optical Communication System (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Pour réaliser un système optique pour signaux lumineux en permanence, de trois couleurs différentes, en particulier pour la signalisation ferroviaire, qui s'avère d'encombrement moindre, de plus grande luminosité et stigmatisme plus élevé par rapport aux systèmes connus à ce jour et comprenant trois sources lumineuses 5 de couleur différente, avec trois miroirs 3 correspondants et trois filtres dichro ques correspondants 6,7,8 disposés suivant le prisme pentagonal de Gouiler-­ Prande et avec une lentille asphérique 9 d'émergence, il est prévu de disposer la lentille asphérique 9 avec son foyer F co ncident avec le centre 10 du prisme pentagonal et d'interposer entre ledit centre 10 et ladite lentille asphérique 9, une lentille divergente 11 à surface du second degré, à foyer virtuel et avec les axes de la lentille divergente 11 et de la lentille asphérique 9, co ncidents.
Ladite lentille divergente 11 est du type ménisque elliptique-négative dont la face convexe sphérique, qui est orientée vers la lentille sphérique 9, a son centre de courbure qui co ncide avec le foyer de ladite lentille asphérique, et dont la face concave, qui est ellipso dale ou sphérique, peut être obtenue à partir de l'équation générale de Descartes.
En alternative, la lentille divergente 11 est du type plan-hyperbolique concave ou plan concave sphérique avec la face concave tournée vers la lentille asphérique 9 et avec le foyer co ncident avec celui de ladite lentille asphérique 2. Lesdits miroirs 3 sont du type parabolique de rendement relatif maximum.
EP89830310A 1988-07-15 1989-07-04 Système optique pour signaux de différentes couleurs, lumineux en permanence, en particulier pour la signalisation ferroviaire Expired - Lifetime EP0351380B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8809448A IT1224982B (it) 1988-07-15 1988-07-15 Sistema ottico per segnali di differenti colori, permanentemente luminosi, specialmente per segnalamento ferroviario
IT944888 1988-07-15

Publications (3)

Publication Number Publication Date
EP0351380A2 EP0351380A2 (fr) 1990-01-17
EP0351380A3 true EP0351380A3 (fr) 1991-03-13
EP0351380B1 EP0351380B1 (fr) 1997-02-05

Family

ID=11130291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89830310A Expired - Lifetime EP0351380B1 (fr) 1988-07-15 1989-07-04 Système optique pour signaux de différentes couleurs, lumineux en permanence, en particulier pour la signalisation ferroviaire

Country Status (4)

Country Link
EP (1) EP0351380B1 (fr)
AT (1) ATE148665T1 (fr)
DE (1) DE68927750T2 (fr)
IT (1) IT1224982B (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH487367A (fr) * 1968-12-12 1970-03-15 Camille Berger Michel Appareil pour la production de faisceaux lumineux diversement colorés
US4454570A (en) * 1981-03-09 1984-06-12 Wabco Westinghouse Compagnia Italiana Segnali S.P.A. Multiple colored searchlight signal unit
US4754272A (en) * 1986-09-18 1988-06-28 General Signal Corporation Three aspect signalling device using no moving parts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH487367A (fr) * 1968-12-12 1970-03-15 Camille Berger Michel Appareil pour la production de faisceaux lumineux diversement colorés
US4454570A (en) * 1981-03-09 1984-06-12 Wabco Westinghouse Compagnia Italiana Segnali S.P.A. Multiple colored searchlight signal unit
US4754272A (en) * 1986-09-18 1988-06-28 General Signal Corporation Three aspect signalling device using no moving parts

Also Published As

Publication number Publication date
IT8809448A0 (it) 1988-07-15
EP0351380A2 (fr) 1990-01-17
ATE148665T1 (de) 1997-02-15
DE68927750D1 (de) 1997-03-20
IT1224982B (it) 1990-10-30
EP0351380B1 (fr) 1997-02-05
DE68927750T2 (de) 1997-09-04

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