EP0351380A2 - Optische Anlage für dauernde Lichtsignale verschiedener Farben, insbesondere für Eisenbahnsignalisierung - Google Patents

Optische Anlage für dauernde Lichtsignale verschiedener Farben, insbesondere für Eisenbahnsignalisierung Download PDF

Info

Publication number
EP0351380A2
EP0351380A2 EP89830310A EP89830310A EP0351380A2 EP 0351380 A2 EP0351380 A2 EP 0351380A2 EP 89830310 A EP89830310 A EP 89830310A EP 89830310 A EP89830310 A EP 89830310A EP 0351380 A2 EP0351380 A2 EP 0351380A2
Authority
EP
European Patent Office
Prior art keywords
lens
optical system
face
concave
mirrors
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
EP89830310A
Other languages
English (en)
French (fr)
Other versions
EP0351380A3 (de
EP0351380B1 (de
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/de
Publication of EP0351380A3 publication Critical patent/EP0351380A3/de
Application granted granted Critical
Publication of EP0351380B1 publication Critical patent/EP0351380B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the present invention relates to an optical system for a signaling device with signals of variable color, permanently illuminated, in particular for railway signals.
  • the devices for permanently emitting light signals used an electro-optical-mechanical system constituted by a spherical mirror at the center of curvature of which the light source of a bulb and an aspherical lens having its focal point coincide with the center of the light source.
  • the different colorations of the signal were obtained using several flat filters, of colored glass, arranged in series, perpendicular to the axis of the conical beam of the light rays, at a point located between the light source and the aspherical lens.
  • the selection and control of the mechanism of the color filters was obtained by means of a relay, and therefore proved to be complex and expensive, of low efficiency and resulting in high energy consumption.
  • dichro ques filters arranged in an appropriate way, being able to operate in a static way the selection of the radiations coming from several light sources by switching on and off of the lamps, allow obvious energy savings and a constructive simplification.
  • the present invention aims to eliminate the aforementioned drawbacks in relation to the mechanical bulk, the brightness and the stigmatism of a signaling device with signals of variable color of the type with dichroic filters.
  • an optical system for a signaling device with permanently light signals, of the dichroic filter type, in particular for railway signals, comprising several light sources (filament lamp ) suitably arranged with respect to a dichroic filter system and an aspherical lens of emergence of the beam of rays which constitute the signal, having an appropriate focal distance and with its focal point placed in the center of said filter system dichro ques, a system in which each light source, if it is of the filament type, is placed on the focal point of a parabolic mirror.
  • An intermediate diverging lens, on the second degree surface, with its virtual focus superimposed on that of the output aspherical lens, is arranged at an appropriate distance, perpendicular to the axis of the system, between said center of the dichro filter system and said aspherical emergence lens.
  • said divergent lens with a second degree surface is characterized by a convex spherical face turned towards said aspherical lens, and the center of curvature of which coincides with the focal point of said lens. aspherical, and by a concave ellipso dal face which is determined from the distance between the aspherical lens and its focal point and by the section necessary for the beam of rays coming from the parabolic mirrors.
  • the concave face is the osculating surface of the abovementioned ellipsoidal surface.
  • the intermediate diverging lens is a concave plane-hyperbolic lens with the planar face facing the dichroic filter system, with the hyperbolic concave face facing the aspherical lens and with its virtual focus coincides with that of the aspherical lens.
  • a colored paste filter is interposed between each light source and the corresponding dichro filter to increase the chromatic security of the optical system and / or a spherical recovery mirror having its center of curvature. coincide with the focus of the parabolic mirror in order to prevent the divergent lens from also seeing the real focus of the parabola, in addition to the virtual focus of the aspherical lens
  • the light sources consist of beams of laser rays.
  • the solution proposed by the present invention allows the production of an illumination or signaling device of variable color, in particular, but not exclusively, for railway signaling, which makes it possible to reduce the axial bulk, to increase the brightness , use lamps with more concentrated filaments or xenon lamps of lower power, to reduce energy consumption, to obtain a better stigmatism, to correct possible aberrations even chromatic, especially if the diverging lens is transformed into an aspherical achromatic doublet able to correct chromatically the whole system.
  • an optical system for a signaling device with signals of three different colors, permanently lit, in accordance with the present invention comprises: - three parabolic mirrors 3, with the relative axes respectively, coaxial, at 45 ° and perpendicular to the longitudinal axis XX of the device and with a lamp 5, with very concentrated filament, for example of the xenon type, placed in the focal point F each of said mirrors; - three dichroic filters 6,7 and 8 respectively opposite said mirrors 3 and arranged at appropriate angles according to the principle of the pentagonal prism of Goulier-Prande and produced so that the filter 7 is transparent to a first color (for example yellow) and reflecting a second color (for example green), filter 8 is transparent to said second color (green) and filter 6 is transparent to a third color (for example red) and reflecting for the two aforementioned colors (yellow and green).
  • Said lens 11 is a lens of the type called negative meniscus-elliptical with the concave face 12 facing the filter system and the spherical face 13 facing the aspherical lens 9 and whose center of curvature coincides with the focus F1 of the aspherical lens 9.
  • the concave face of said lens 11 is preferably ellipsoidal and defined by the equation of the Descartes oval, or else spherical following the corresponding osculating sphere.
  • the lenses can be made of optical or semi-optical glass, worked optically or semi-optically, or possibly of plastic material CR39 or any other having an index of between 1.33 and 1.95.
  • the parabolic mirrors can be produced by electroforming of nickel or the like and treated with Rhodium or the like. After determining the focal distance of the aspherical lens 9, the distance between the face 12 of the intermediate lens 11 and the flat face of the lens can be determined. aspherical lens 9 which is turned towards the dichroic filter system and this on the basis of the dimension of axial dimension desired.
  • This diameter in combination with angular connotations concerning the emission of the light source relative to its photometric solid, allows, according to a calculation scheme starting from the Descartes oval and well known to those skilled in the art, to determine the maximum relative efficiency mirror and the useful diameter of the intermediate diverging lens.
  • This diameter with the distance from the focal point of the aspherical lens, provides the basic elements for determining the curvature of the concave face 12 of the intermediate lens 11.
  • the essential characteristics which the diverging lens 11 must have - be located in the conical beam of rays with the virtual focal point placed on the focal point of the aspherical lens so as to obtain the smallest axial bulk; - be correlated, with regard to the aperture and the inter-distance, with the other elements of the system, in relation either to the maximum optical exploitation of the aspherical lens, or to the maximum energy yield of a parabolic mirror of maximum efficiency to obtain the maximum brightness; - have a second degree surface to solve the problem of spherical aberration and achieve the stigmatism of the desired optical path.
  • the divergent lens there are many solutions.
  • a concave plane-hyperbolic lens 14 indicated as a second embodiment, (see FIGS. 3 and 3A of the appended drawings) with the plane face 15 facing the dichro filter system and the concave face 16 towards the aspherical lens 9.
  • the various calculations are carried out in an analogous manner taking into account the fact that the Descartes oval is transformed into a hyperbola whose focal point is coincident with the focal point F1 of the aspherical lens 9
  • "a" can be fixed between 0.5 and 200 mm and the thickness "s" between 0.2 and 15 mm.
  • the face of said plane-hyperbolic lens (14) which faces the aspherical lens (9) can advantageously be of the "Fresnell" type with the prismatic elements positioned so as to obtain the desired diverging effect (FIGS. 8 and 8A).
  • the convex face of the diverging lens 11 is treated at least with a monomolecular layer of magnesium fluoride (Mg F2), in particular in the case of non-exuberance of energy and to significantly reduce the so-called "fantasy effect".
  • Mg F2 magnesium fluoride
  • Anti-reflective treatment can be more effectively multi-layered.
  • each dichro filter that 6,7,8 a spherical mirror 18 for recovering radiation, preferably obtained by an aluminizing treatment and protection with silicon monoxide , which is oriented so that the center of curvature coincides with the focal point F of the corresponding parabolic mirror, in order to prevent the divergent lens 11 from also directly seeing the real focal point of the parabola, in addition to the beam of rays coming, by reflection, from parabolic mirrors.
  • an anti-Newton glass plate to allow a slight diffusion of the beam. issued; this plate can be placed in front of each light source or at any useful point on the axis XX and perpendicular thereto.
  • an anti-Newton effect the flat face of the aspherical lens 9 or one face of the divergent lens 11 and / or that of the parabolic mirrors 3.

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)
EP89830310A 1988-07-15 1989-07-04 Optische Anlage für dauernde Lichtsignale verschiedener Farben, insbesondere für Eisenbahnsignalisierung Expired - Lifetime EP0351380B1 (de)

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 true EP0351380A2 (de) 1990-01-17
EP0351380A3 EP0351380A3 (de) 1991-03-13
EP0351380B1 EP0351380B1 (de) 1997-02-05

Family

ID=11130291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89830310A Expired - Lifetime EP0351380B1 (de) 1988-07-15 1989-07-04 Optische Anlage für dauernde Lichtsignale verschiedener Farben, insbesondere für Eisenbahnsignalisierung

Country Status (4)

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

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
ATE148665T1 (de) 1997-02-15
DE68927750D1 (de) 1997-03-20
EP0351380A3 (de) 1991-03-13
IT1224982B (it) 1990-10-30
EP0351380B1 (de) 1997-02-05
DE68927750T2 (de) 1997-09-04

Similar Documents

Publication Publication Date Title
EP3396241B1 (de) Leuchtmodul mit optimierter bildanzeigeoptik für einen verpixelten räumlichen lichtmodulator, der für ein kraftfahrzeug bestimmt ist
CA2018204C (fr) Dispositif de visualisation pour viseur de casque ergonomique a grand champ d'observation
EP1792224B1 (de) Verfahren zur herstellung einer ophthalmischen linse für die herstellung einer optischen anzeige
EP0290347B1 (de) Hochleistungsleuchte, insbesondere für Kraftfahrzeuge
EP3830474A1 (de) Leuchtmodul zur abbildung der beleuchteten fläche eines kollektors
EP0011024A1 (de) Helmsichtsystem
FR3039883A1 (fr) Module lumineux en materiau transparent avec deux faces de reflexion
EP1746339A1 (de) Vorrichtung zur Beleuchtung oder Signalgebung, insbesondere für Fahrzeuge
WO2006095107A1 (fr) Imageur optique destine a la realisation d'un afficheur optique
FR2664677A1 (fr) Reflecteur pour un dispositif d'eclairage de vehicule automobile, et projecteur et feu de signalisation incorporant un tel reflecteur.
EP2976569B1 (de) Beleuchtungs- und/oder meldemodul für ein kraftfahrzeug
FR2755210A1 (fr) Projecteur a conduit de lumiere pour vehicules automobiles
FR2614969A1 (fr) Feu de signalisation a grande plage eclairante et luminance homogene, notamment pour vehicule automobile
FR3044743A1 (fr) Systeme optique de projection, module lumineux et dispositif d'eclairage pour vehicule automobile comportant un tel systeme
EP0351380B1 (de) Optische Anlage für dauernde Lichtsignale verschiedener Farben, insbesondere für Eisenbahnsignalisierung
FR2635166A1 (fr) Phare d'automobile comportant un verre deflecteur intermediaire
EP2853804B1 (de) Beleuchtungs- und/oder signalisierungsmodul mit mehreren drehbaren optischen systemen
WO2001067153A2 (fr) Relais optique correcteur d'aberrations pour systeme optique, notamment telescope a miroirs
FR2687795A1 (en) Optoelectric system for the detection and angular location of a luminous object
FR2472762A1 (fr) Dispositif de vision binoculaire de jour
FR3077117A1 (fr) Module lumineux pour vehicule automobile, et dispositif d'eclairage et/ou de signalisation muni d'un tel module
FR2653905A1 (fr) Dispositif optique de correction des defauts introduits par un hublot spherique utilise hors d'axe.
WO2020216728A1 (fr) Module lumineux
EP2410238B1 (de) Optischer Reflektor auf transparenter Scheibe mit Hinterschnitt
FR3128769A1 (fr) Module lumineux avec réflecteur de renvoi distant des sources lumineuses

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19910208

17Q First examination report despatched

Effective date: 19930226

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970205

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970205

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19970205

REF Corresponds to:

Ref document number: 148665

Country of ref document: AT

Date of ref document: 19970215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 68927750

Country of ref document: DE

Date of ref document: 19970320

ITF It: translation for a ep patent filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19970505

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: KIRKER & CIE SA

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970502

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970731

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970731

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: LABORATORIO OTTICO FIORENTINO DI VANNINI LUIGI

Effective date: 19970731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19980728

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980804

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980930

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19981019

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990704

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990731

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990704

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000503

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020329

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: FR

Ref legal event code: D3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20040627

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060331

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20060731

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070704