DE2810209A1 - FILTER COMBINATION FOR FIBER OPTICAL SYSTEMS - Google Patents

FILTER COMBINATION FOR FIBER OPTICAL SYSTEMS

Info

Publication number
DE2810209A1
DE2810209A1 DE19782810209 DE2810209A DE2810209A1 DE 2810209 A1 DE2810209 A1 DE 2810209A1 DE 19782810209 DE19782810209 DE 19782810209 DE 2810209 A DE2810209 A DE 2810209A DE 2810209 A1 DE2810209 A1 DE 2810209A1
Authority
DE
Germany
Prior art keywords
filter
light guide
color filter
guide system
absorption
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
DE19782810209
Other languages
German (de)
Other versions
DE2810209C2 (en
Inventor
Wolfgang Ing Grad Kriege
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.)
Schott AG
Original Assignee
Jenaer Glaswerk Schott and Gen
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 Jenaer Glaswerk Schott and Gen filed Critical Jenaer Glaswerk Schott and Gen
Priority to DE2810209A priority Critical patent/DE2810209C2/en
Priority to CH1234978A priority patent/CH634138A5/en
Priority to NL7812609A priority patent/NL7812609A/en
Priority to GB7903736A priority patent/GB2016132B/en
Priority to FR7906098A priority patent/FR2419462A1/en
Publication of DE2810209A1 publication Critical patent/DE2810209A1/en
Application granted granted Critical
Publication of DE2810209C2 publication Critical patent/DE2810209C2/en
Expired legal-status Critical Current

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
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4298—Coupling light guides with opto-electronic elements coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic 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
    • F21V9/04—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out infrared radiation
    • 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
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
    • G02B6/0006—Coupling light into the fibre
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0418—Constructional details
    • G09F13/0472—Traffic signs
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/305—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being the ends of optical fibres
    • 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 Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Filters (AREA)
  • Glass Compositions (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Description

JENAer GLASWERK
SCHOTT & GEN.
Hattenbergstrasse 10 6500 MainzJENAer GLASWERK
SCHOTT & GEN.
Hattenbergstrasse 10 6500 Mainz

Filterkombination für faseroptische SystemeFilter combination for fiber optic systems

Die vorliegende Erfindung betrifft eine neuartige Filteranordnung zur Verwendung in farbigen BeleuchtungssySternen.The present invention relates to a novel filter arrangement for use in colored lighting systems.

Der Einsatz von Faseroptik ermöglicht die vielfältige Gestaltung neuartiger Beleuchtungssysteme, wie z.B. Signalanzeigevorrichtungen für verschiedene Verkehrsformen (Signalanzeigevorrichtungen sind z.B. beschrieben in DE-AS 2 437 580 und DE-OS 2 126 672). Der Einsatz von sehr lichtstarken Lichtquellen (Halogenlampen) und die starke Fokussierung des Lichtes auf die Eintrittsfläche der Lichtleiter bringt jedoch vor allem bei farbigen Signalen dieThe use of fiber optics enables the diverse design of novel lighting systems, such as signal display devices for different forms of traffic (signal indicators are e.g. described in DE-AS 2 437 580 and DE-OS 2 126 672). The use of very bright light sources (halogen lamps) and however, the strong focus of the light on the entry surface of the light guide is particularly beneficial for colored signals

909837/0350909837/0350

Schwierigkeit mit sich, daß die Absorption der vom Filter nicht durchgelassenen Strahlen zu einer Erwärmung desselben führt. Vor allem bei den für rote und gelbe Signallichter eingesetzen Anlaufgläsern führt dies zu einer unzulässigen Verschiebung des Farbortes sowie einer unerwünschten Verminderung der Lichtstärke, zumal die Normen bezüglich Farbort und Lichtstärke für Verkehrssignalgeber enge Grenze setzen. Ein Filter für den roten und gelben Spektralbereich, das diese negativen Eigenschaften nicht besitzt, ist nicht bekannt und bei dem derzeitigen Stand der Technik nicht oder nur unter großem Aufwand herstellbar.Difficulty with the fact that the absorption of the filter is not transmitted rays leads to heating of the same. Mainly used for red and yellow signal lights With tarnish glasses, this leads to an impermissible shift of the color location as well as an undesirable reduction in the light intensity, especially since the standards with regard to color location and luminous intensity set strict limits for traffic signal generators. A filter for the red and yellow spectral range, which does not have these negative properties, is not known and at the current state of the Technology cannot be produced or only with great effort.

Eine Möglichkeit zur Lösung dieses Problems wäre die Kühlung des Filters. Diese Maßnahme scheidet jedoch wegen des hohen Aufwandes und den damit verbundenen Kosten aus.One way to solve this problem would be to cool the filter. However, this measure is different because of the high cost and the associated costs.

Die Zwischenschaltung von Wärmeabsorptions- oder Reflexionsfiltern ist nur bei wenigen bestimmten Farbfiltern (z.B. grün oder blau) möglich, bei denen die Wärmestrahlung den Großteil der vom Filter absorbierten Strahlung ausmacht.The interposition of heat absorption or reflection filters is only possible with a few specific color filters (e.g. green or blue), where the thermal radiation makes up the majority of the radiation absorbed by the filter.

Die vorliegende Erfindung beruht auf der Überlegung, daß man, da die Infrarotstrahlung die roten und gelben Anlaufgläser weitgehend ungehindert passiert, versuchen müßte, den vom Filter absorbierten und in Wärme umgewandelten kurzwelligeren Teil der ■ von der eingesetzten Lichtquelle ausgehenden Strahlung vor dem Filter abzufangen. Es wurde nun gefunden, daß dies erfolgreich bewerkstelligt werden kann durch Kombination des Anlaufglases mit einem zweiten Filter, welches weitgehend nur den gewünschten Spektralbereich durchläßt und alles andere Licht, das zur Aufheizung des Filters führt, reflektiert oder absorbiert.The present invention is based on the consideration that, as the infrared radiation, the red and yellow tarnish glasses Happened largely unhindered, would have to try to absorb the shorter-wave part of the ■ intercept radiation emanating from the light source used in front of the filter. It has now been found to be successful can be achieved by combining the starter glass with a second filter, which largely only contains the desired filter Spectral range lets through and all other light that heats up of the filter guides, reflects or absorbs.

Dieses zweite Filter kann wie das erste Filter ebenfalls aus einem Anlaufglas bestehen, dessen Kante soweit ins Kurzwellige verschoben ist, daß es trotz Erwärmung die Kante des .Hauptfilters nicht erreicht.This second filter can also be made like the first filter consist of a starter glass, the edge of which is shifted to the short-wave range that it is the edge of the main filter despite heating not reached.

909837/0350909837/0350

Zu beachten ist dabei, daß durch räumlichen Abstand zwischen den beiden Filtern eine Erwärmung des Hauptfilters durch Konvektion oder Wärmeleitung vermieden wird.It should be noted that the spatial distance between the two filters causes the main filter to heat up Convection or heat conduction is avoided.

Gemäß einer besonderen Ausführungsform der Erfindung kann dieses zweite Filter aus einem Farbteilungsfilter bestehen, welches nur den gewünschten Spektralbereich durchläßt, jedoch alles andere. Licht, das zur Aufheizung des Hauptfilters führen würde, reflektiert. Hierzu können z.B. Gläser mit dielektrischen Vielfachschichten verwendet werden.According to a particular embodiment of the invention, this second filter can consist of a color division filter, which only allows the desired spectral range to pass, but everything else. Light that would cause the main filter to heat up, reflected. For this purpose, glasses with multiple dielectric layers can be used, for example.

Figur 1 gibt die Anordnung einer Filterkombination gemäß der Erfindung wieder?Figure 1 shows the arrangement of a filter combination according to the invention?

Das von der Lichtquelle ausgehende Licht wird auf das Lichtleiterende fokussiert. Im Strahlengang dieser Anordnung befindet sich zunächst das erfindungsgemäße zweite Filter 2 und dahinter erst das eigentliche Farbfilter 3.The light emanating from the light source is directed to the end of the light guide focused. The second filter 2 according to the invention is initially located in the beam path of this arrangement and behind it first the actual color filter 3.

Nachstehend werden zwei Beispiele für die spektrale Gestaltung der Filter gemäß der Erfindung gegeben (s.a. Figur 2 und Figur 3):Two examples of the spectral design of the filters according to the invention are given below (see also FIG. 2 and FIG 3):

In diesen Figuren ist die Transparenz gegen die Wellenlänge aufgetragen.In these figures the transparency is versus wavelength applied.

Beispiel 1example 1 Filterkombination mit AbsorptionsfilterFilter combination with absorption filter

Gemäß Fig. 2 ist ein Hauptfilter 5(ζ.B. Schott OG 590) mit einem Anlaufglas 7(z.B. Schott OG 550) mit zum Kurzwelligen hin verschobener Kante kombiniert. Kurve 8 zeigt die Verschiebung dieses Anlaufglases bei Erwärmung.According to Fig. 2 is a main filter 5 (ζ.B. Schott OG 590) with a Stop glass 7 (e.g. Schott OG 550) with shifted towards the short-wave Edge combined. Curve 8 shows the displacement of this start-up glass when it is heated.

909837/0350909837/0350

Beispiel 2Example 2

Filterkombination mit einem Strahlteilungsfilter Fig. 3 zeigt die Kombination eines Hauptfilters6(z.B. Schott OG 550) mit einem Farbteilungsfilter9(z.B. Schott DICHROIT-Filter Typ 312). Eine Verschiebung der Kante wie bei den Anlaufgläsern braucht hier nicht berücksichtigt zu werden. Filter combination with a beam splitting filter Fig. 3 shows the combination of a main filter6 (eg Schott OG 550) with a color splitting filter9 (eg Schott DICHROIT filter type 312). A shift of the edge as with the starter glasses does not need to be taken into account here.

909837/0350909837/0350

LeerseiteBlank page

Claims (5)

Dr. Joachim Rasper 525 Pcitentanv/cit Wiesbaden Pb/iiccta KS; ο 22 Tel. SS 28 47 JENAer GLASWERK SCHOTT & GEN. Hattenbergstrasse 10 6500 Mainz Filterkombination für faseroptische Systeme Patentansprüche:Dr. Joachim Rasper 525 Pcitentanv / cit Wiesbaden Pb / iiccta KS; ο 22 Tel. SS 28 47 JENAer GLASWERK SCHOTT & GEN. Hattenbergstrasse 10 6500 Mainz Filter combination for fiber optic systems Patent claims: 1)/ Lichtleitsystem mit einem Absorptions-Farbfilter zwischen der Lichtquelle und dem Einstrahlende des Lichtleiters, dadurch gekennzeichnet, daß zwischen der Lichtquelle und diesem Farbfilter ein zweites Farbfilter angeordnet ist.1) / Light guide system with an absorption color filter between the light source and the irradiation end of the light guide, characterized in that between the light source and this color filter a second color filter is arranged. 2) Lichtleitsystem nach Anspruch 1, dadurch gekennzeichnet, daß dieses erste Farbfilter ein Anlauffilter ist.2) light guide system according to claim 1, characterized in that this first color filter is a start-up filter. 3) Lichtleitsystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß dieses zweite Farbfilter ein Absorptionsfilter ist, dessen Absorptionskante im kürzerwelligen Bereich des Spektrums3) light guide system according to claim 1 or 2, characterized in that that this second color filter is an absorption filter whose absorption edge is in the shorter-wave range of the spectrum 909837/0350909837/0350 m.Bezug auf dieAbsorptionskante dieses ersten Filters liegt, und dessen Temperaturabhängigkeit der Absorption derart beschaffen ist, daß seine Absorptionskante auch bei der maximalen, beim Betrieb dieses Lichtleitsystems auftretenden Temperatur nicht über die Absorptionskante dieses ersten Filters hinauswandert .m. with respect to the absorption edge of this first filter, and whose temperature dependence of the absorption is such that its absorption edge even at the maximum, The temperature occurring during the operation of this light guide system does not migrate beyond the absorption edge of this first filter . 4) Lichtleitsystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß dieses zweite Farbfilter ein Reflex ionsfilter ist, welches im wesentlichen alle Lichtstrahlen des kürzerwelligen Spektralbereiches mit Bezug auf die Absorptionskante dieses ersten Filters reflektiert.4) light guide system according to claim 1 or 2, characterized in that that this second color filter is a reflection filter, which essentially all light rays of the shorter-wave spectral range with reference to the absorption edge of this first Filters reflected. 5) Lichtleitsystem nach Anspruch 3, dadurch gekennzeichnet, daß dieses zweite Farbfilter ein Anlauffilter ist.5) light guide system according to claim 3, characterized in that this second color filter is a start-up filter. 909837/0350909837/0350
DE2810209A 1978-03-09 1978-03-09 Filter combination for use in a fiber optic light guide system Expired DE2810209C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE2810209A DE2810209C2 (en) 1978-03-09 1978-03-09 Filter combination for use in a fiber optic light guide system
CH1234978A CH634138A5 (en) 1978-03-09 1978-12-04 LIGHT CONTROL SYSTEM.
NL7812609A NL7812609A (en) 1978-03-09 1978-12-28 LIGHT FILTER FOR USE WITH LIGHT-CONDUCTIVE FIBERS.
GB7903736A GB2016132B (en) 1978-03-09 1979-02-02 Filter combination for fibre optics systems
FR7906098A FR2419462A1 (en) 1978-03-09 1979-03-09 FILTER SYSTEM FOR FIBER OPTIC DEVICES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2810209A DE2810209C2 (en) 1978-03-09 1978-03-09 Filter combination for use in a fiber optic light guide system

Publications (2)

Publication Number Publication Date
DE2810209A1 true DE2810209A1 (en) 1979-09-13
DE2810209C2 DE2810209C2 (en) 1986-01-16

Family

ID=6033976

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2810209A Expired DE2810209C2 (en) 1978-03-09 1978-03-09 Filter combination for use in a fiber optic light guide system

Country Status (5)

Country Link
CH (1) CH634138A5 (en)
DE (1) DE2810209C2 (en)
FR (1) FR2419462A1 (en)
GB (1) GB2016132B (en)
NL (1) NL7812609A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9308375U1 (en) * 1993-06-04 1994-10-13 Kampers, Michael, 41539 Dormagen Lighting device
WO2001088433A1 (en) * 2000-05-17 2001-11-22 Västra Götalands Läns Landsting Lighting device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4560252A (en) * 1983-02-10 1985-12-24 Kei Mori Optical filter device
PT80568A (en) * 1985-05-31 1985-06-01 Fernando Augusto Andres Luminous advertising sign made with optical fibers and using fixed and/or variable coloured lights
DE3812418A1 (en) * 1988-04-14 1989-10-26 Hoechst Ag FIBER OPTICAL LUMINOUS MARKER
FR2670911B1 (en) * 1990-12-24 1994-04-01 Sopelem INFRARED LIGHTHOUSE.
DE4309108A1 (en) * 1993-03-22 1994-09-29 Guenter Dipl Ing Wuschik Bath-tub having an illuminated interior space

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2109639A1 (en) * 1970-03-02 1971-09-16 Poly-Optics, Inc., Santa Ana, Calif. (V.St.A.) Lighting device with fiber optics
DE2126672A1 (en) * 1970-06-01 1971-12-09 Rank Organisation Ltd Display device
DE2437580B1 (en) * 1974-08-05 1975-11-13 Jenaer Glaswerk Schott & Gen., 6500 Mainz Signal display device for the emission of light signals

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2109639A1 (en) * 1970-03-02 1971-09-16 Poly-Optics, Inc., Santa Ana, Calif. (V.St.A.) Lighting device with fiber optics
DE2126672A1 (en) * 1970-06-01 1971-12-09 Rank Organisation Ltd Display device
DE2437580B1 (en) * 1974-08-05 1975-11-13 Jenaer Glaswerk Schott & Gen., 6500 Mainz Signal display device for the emission of light signals

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Farb- und Filterglas für Wissenschaft und Technik, Jenaer Glaswerk Schott & Gen. Mainz, 1959, S. 9 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9308375U1 (en) * 1993-06-04 1994-10-13 Kampers, Michael, 41539 Dormagen Lighting device
WO2001088433A1 (en) * 2000-05-17 2001-11-22 Västra Götalands Läns Landsting Lighting device

Also Published As

Publication number Publication date
FR2419462A1 (en) 1979-10-05
GB2016132B (en) 1982-05-06
NL7812609A (en) 1979-09-11
CH634138A5 (en) 1983-01-14
FR2419462B3 (en) 1981-12-31
DE2810209C2 (en) 1986-01-16
GB2016132A (en) 1979-09-19

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Legal Events

Date Code Title Description
OAP Request for examination filed
OD Request for examination
8127 New person/name/address of the applicant

Owner name: SCHOTT GLASWERKE, 6500 MAINZ, DE

8125 Change of the main classification

Ipc: F21V 9/08

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee