US1967548A - Arrangement for producing multiple total reflections - Google Patents

Arrangement for producing multiple total reflections Download PDF

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Publication number
US1967548A
US1967548A US676870A US67687033A US1967548A US 1967548 A US1967548 A US 1967548A US 676870 A US676870 A US 676870A US 67687033 A US67687033 A US 67687033A US 1967548 A US1967548 A US 1967548A
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United States
Prior art keywords
light
arrangement
producing multiple
total reflections
multiple total
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Expired - Lifetime
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US676870A
Inventor
Bartels Friedrich
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Individual
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    • 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
    • G02B6/0011—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 planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • 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
    • 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
    • G02B6/0011—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 planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0026—Wavelength selective element, sheet or layer, e.g. filter or grating
    • 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
    • G02B6/0011—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 planar or of plate-like form
    • G02B6/0066—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 planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/007—Incandescent lamp or gas discharge lamp

Definitions

  • This invention relates to an arrangement for producing multiple total reflections of light rays in the interior of translucent bodies, such as glass panes, through which characters or'the like provided on the body are rendered luminous.
  • a refleeting plate 2 is stuck tightly on the outer side of the paneopposite the source of light, for example by means of a'textilematerial coated with a light coloured rubber solution for eflecting a tight adhesion tothe'pane.
  • the beams of light impinging on this" reflecting plates are reflected and diflused, so that-therays which lie outside the critical angle 1 are 'compelledby the total reflection on'the surfaces or the glass pane a to remain inthe glass. They can then only leave the glass in"v known manner when they encounter characters or-the like reacting to difl'used light and fltted on' the surface oithe pane a, so that these characters areilluminated.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Description

gsw mwa w k m 1 967,548 L I "-1 7 r. UARTELS 1,967,548
ARRANGEMENT FOR PRODUCING MULTIPLE TOTAL REFLECTIONS Filed June 16, 1955 I w r" a 5 i i i 1 I i i 1% w QR 240/151,
Patented July 24, 1934 1,961.50" ARRANGEMENT FOR PRODUCING I TIPLE TOTAL REFLECTIONS l riedrich Bartels, Hamburg, Germany Application June 16, In Germany 1938, Serial March 1, 1932 No. creme 1 Claim. ion. 240-1) This invention relates to an arrangement for producing multiple total reflections of light rays in the interior of translucent bodies, such as glass panes, through which characters or'the like provided on the body are rendered luminous. In the" known arrangements of this kind it is either necessary to arrange the source of light along the edge or very close to the edge of the glass pane in order to project the light rays into the trans lucent body in the first instance directly and in 10 the second instance by reflections oi the correspondingly arranged pane edges, and to thus cause the characters or the like provided on the glass pane to become luminous; or ii it is desired to ar range the source of light behind the pane in order.
to thus produce total reflection even in the case of panes the edge of which is inaccessible, a prism had to be cut in the side of the glass pane remote from the source of light in. order to thus produce reflecting edges which reflect the impingfi ing rays longitudinally of the pane within the 'Thisinvention is based on a different principle in that the side of the pane directed towards the moved without difliculty and fltted as; desired at any point of the glass pane, and radiated bye. 4 source of light, the rays 01' which implngeqin known manner only on the reflector. The light rays are reflected in different direction by this reflector. so that those rays which areoutside the V critical angle 01' total reflection remain in the glass. It thus becomes possible, to illuminate characters or the like around the reflector in a radiusot action corresponding to the source of light. Therefore it is only necessary to arrange a certain number of sources of light behind a display window andto lit a' corresponding number of reflectors in front thereof, opposite thesources of light, in order to cause characters arranged over the entire surface or the display window ,to illuminate. i
' An embodiment of the invention is illustrated by wayotexample in cross section in the only flgure oi the accompanying drawing.
On the inner side of a display window a, a
1 source of light surrounded by a reflector c is fixed for example by means of rubber suckers b. i A refleeting plate 2 is stuck tightly on the outer side of the paneopposite the source of light, for example by means of a'textilematerial coated with a light coloured rubber solution for eflecting a tight adhesion tothe'pane. 'The beams of light impinging on this" reflecting plates are reflected and diflused, so that-therays which lie outside the critical angle 1 are 'compelledby the total reflection on'the surfaces or the glass pane a to remain inthe glass. They can then only leave the glass in"v known manner when they encounter characters or-the like reacting to difl'used light and fltted on' the surface oithe pane a, so that these characters areilluminated.
An arrangement. for producing multiple total reflections of light rays in the interior oi translucent bodies for illuminating characters mounted 9o thereon, comprising 1 in combination with the translucent body a source 01 light arranged on the inner side of said body, and aflat reflector stuck onto the outer side of said body adapted to receive all the rays oilight from said source of light .and to reflect the same in diflused state towards the interior of said body. a
- BAR'I'ELS.
US676870A 1932-03-10 1933-06-16 Arrangement for producing multiple total reflections Expired - Lifetime US1967548A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1967548X 1932-03-10

Publications (1)

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US1967548A true US1967548A (en) 1934-07-24

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734124A (en) * 1956-02-07 Illuminated umbrella handle
US2942099A (en) * 1958-04-11 1960-06-21 Rca Corp Optical projection system
US5846117A (en) * 1995-08-01 1998-12-08 Mcgaffigan; Thomas H. Vehicle track lighting system
US5909301A (en) * 1995-06-07 1999-06-01 Optical Switch Corporation Frustrated total internal reflection device having a first spacer and a second spacer
US6137930A (en) * 1998-07-08 2000-10-24 Optical Switch Corporation Method and apparatus for aligning optical fibers
US6236787B1 (en) 1998-07-08 2001-05-22 Optical Switch Corporation Method and apparatus for aligning optical fibers using an alignment spacer
US6236778B1 (en) 1998-12-16 2001-05-22 Optical Switch Corporation Frustrated total internal reflection bus and method of operation
US6243511B1 (en) 1999-02-04 2001-06-05 Optical Switch Corporation System and method for determining the condition of an optical signal
US6253007B1 (en) 1998-07-08 2001-06-26 Optical Switch Corporation Method and apparatus for connecting optical fibers
WO2009022284A1 (en) * 2007-08-16 2009-02-19 Koninklijke Philips Electronics N.V. Lighting assembly

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734124A (en) * 1956-02-07 Illuminated umbrella handle
US2942099A (en) * 1958-04-11 1960-06-21 Rca Corp Optical projection system
US5909301A (en) * 1995-06-07 1999-06-01 Optical Switch Corporation Frustrated total internal reflection device having a first spacer and a second spacer
US5846117A (en) * 1995-08-01 1998-12-08 Mcgaffigan; Thomas H. Vehicle track lighting system
US6137930A (en) * 1998-07-08 2000-10-24 Optical Switch Corporation Method and apparatus for aligning optical fibers
US6236787B1 (en) 1998-07-08 2001-05-22 Optical Switch Corporation Method and apparatus for aligning optical fibers using an alignment spacer
US6253007B1 (en) 1998-07-08 2001-06-26 Optical Switch Corporation Method and apparatus for connecting optical fibers
US6236778B1 (en) 1998-12-16 2001-05-22 Optical Switch Corporation Frustrated total internal reflection bus and method of operation
US6243511B1 (en) 1999-02-04 2001-06-05 Optical Switch Corporation System and method for determining the condition of an optical signal
WO2009022284A1 (en) * 2007-08-16 2009-02-19 Koninklijke Philips Electronics N.V. Lighting assembly
US20110205750A1 (en) * 2007-08-16 2011-08-25 Koninklijke Philips Electronics N.V. Lighting assembly

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