WO2002040919A2 - Edge lighted optical device - Google Patents

Edge lighted optical device Download PDF

Info

Publication number
WO2002040919A2
WO2002040919A2 PCT/PL2001/000091 PL0100091W WO0240919A2 WO 2002040919 A2 WO2002040919 A2 WO 2002040919A2 PL 0100091 W PL0100091 W PL 0100091W WO 0240919 A2 WO0240919 A2 WO 0240919A2
Authority
WO
WIPO (PCT)
Prior art keywords
transparent panel
light
optical device
longitudinal convex
elements
Prior art date
Application number
PCT/PL2001/000091
Other languages
French (fr)
Other versions
WO2002040919A3 (en
Inventor
Arkadiusz Kazmierczak
Grzegorz Drozdowski
Original Assignee
Arkadiusz Kazmierczak
Grzegorz Drozdowski
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 Arkadiusz Kazmierczak, Grzegorz Drozdowski filed Critical Arkadiusz Kazmierczak
Priority to AU2002218580A priority Critical patent/AU2002218580A1/en
Publication of WO2002040919A2 publication Critical patent/WO2002040919A2/en
Publication of WO2002040919A3 publication Critical patent/WO2002040919A3/en

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
    • G02B6/0001—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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
    • 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
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources

Definitions

  • An object of the invention is an edge lighted optical device, especially for light diffusion.
  • edge lighting Another known way of edge lighting is described in European Patent No. 0403764. This way makes edge lighting possible by the use of LEDs as a light source, where a transparent panel is the lighted element.
  • the aspect of the invention in the edge lighted optical device consists in the fact that on one whole plane of the transparent panel are formed light reflecting convex elements, at the same time the inner surfaces of the longitudinal convex elements are coated with a light reflecting film of mirror properties, and the longitudinal convex elements beneficially make one part with the transparent panel.
  • the plane put opposite to the plane not being an edge of linkage with another transparent panel, not parallel to it, is arranged with the other one under a selected angle, at the same time the arrangement angle of the plane where longitudinal convex elements are located, is selected with the respect of width and thickness of the transparent panel.
  • Light reflecting longitudinal convex elements are situated on the plane of the transparent panel mutually parallel with convex parts directed to the run of light rays emitted by a visible light source, at the same time the light diffusion takes place on the mirror surface of the convex part of the longitudinal convex element, at the same time the convex part has an outer surface covered with spatial elements of any shape of the cross-section.
  • the outer size of the longitudinal convex element is selected respecting a width of the transparent panel.
  • the light diffusing film is coated by means of vacuum plating with aluminum or other metal of similar light diffusing features.
  • Transparent panels are connected with each other by linking edges during their manufacturing process and make one homogeneous, transparent panel.
  • the use of the edge lighted devices made according to the aspect of the invention decreases weight and thickness of the light appliances.
  • a beneficial result of the use of the invention is a high light efficiency of the device. It renders into even illumination of the whole panel, which is especially beneficial in advertising or lighting systems, e.g.: large area billboards.
  • edge lighted panels may be used in very flat lighting panels, lighting systems in large trade centers and also in buildings of public services.
  • the invention described above is designed especially for large flat advertising elements where enlarged contrast of underlighted image and reduced weight of the whole equipment are required.
  • the use of the aspect of the invention will cause that a flat advertising element is much better visible with increased luminosity., e.g. during a day.
  • the aspect of the invention can also be used for production of flat-lighted plafonds of different outer size. Lighting elements where the aspect of the invention is used can be applied for lighting of apartments, offices, and large store areas.
  • Fig. 1 is a schematic view of the edge lighted optical device
  • Fig. 2 is a top view of the edge lighted optical device
  • Fig. 3 is a perspective view of the edge lighted optical device
  • Fig. 4 is a perspective view of convex elements
  • Fig. 5 is an enlarged cross-section of the longitudinal convex elements
  • Fig. 6 is a cross-section of the two linked edge lighted optical devices
  • Fig. 7 is an enlarged perspective view of the longitudinal convex elements with located spatial elements
  • Fig. 8 is a schematic top view of a fragment of longitudinal convex elements on the surface of which spatial elements are located.
  • Fig. 1 is a schematic cross-sectional view of the edge lighted optical device, where all details concerning the aspect of the invention have been included respecting the structure of the device.
  • Visible light source 2
  • the structure of the device consists in the fact that on one whole plane A of the transparent panel I, light reflecting longitudinal convex elements 6 have been formed, at the same time, inner surfaces 9 of longitudinal convex elements are coated with a light reflecting film 7 of mirror features, and longitudinal convex elements 6 make one unit with panel I.
  • plane A pposite to the other plane B which is not the light inlet edge 3 of the transparent panel , is set up under a selected angle, at the same time the angle 14 of the plane B on which longitudinal convex elements 6 are located in relation to the light inlet edge 3, is selected with respect of width 11 and thickness 12 of the transparent panel , whereas the light reflecting longitudinal convex elements 6 reflecting the light are located on plane B of the transparent panell parallel to each other and are directed with the convex part towards the run of light rays 4 emitted by visible light source 2, at the same time, light diffusion 5 takes place on the mirror surface of the convex part 8 of the longitudinal convex element 6, and the convex part 8 has an outer surface covered with spatial elements 10 of any shape of their cross-section.
  • the solution is characterized by the fact that the outer size of the longitudinal convex element 6 is selected with respect to width JJ, of the transparent panel I.
  • the light reflecting film 7 is coated by means of vacuum metal plating with aluminum or other metal of similar light reflecting properties.
  • transparent panels I are linked with link edges 3 during a production process and make one transparent panel unit.
  • the device operates as follows: directing a visible light source 2 through the light inlet edge 3 of the transparent panel 1, light rays 4 run towards the surface of longitudinal convex elements 6 where light diffusion and reflection 5 take place on the metal coated film 7.
  • the light is reflected and diffused on the whole area of the transparent panel I.

Abstract

An object of the invention is characterized of the fact that on the whole plane of the transparent panel (1) are formed light diffusing longitudinal convex elements (6) and at the same time inner surfaces (9) of longitudinal convex elements (6) are coated with a light diffusing film (7) of mirror properties, whereas the longitudinal convex elements (6) make beneficially a whole with the transparent panel (1).

Description

Edge lighted optical device
Object of the invention. An object of the invention is an edge lighted optical device, especially for light diffusion.
Technical field. Known so far light diffusing appliances use transparent elements in form of flat panels or space elements. In case of edge lighted flat panels, there is a well-known technique using electro luminescent tubes as a light source. The light-transferring element, which causes light emission with the whole area of the plane, is circles of small diameter made of a film of the concentration gradual increase.
Another known way of edge lighting is described in European Patent No. 0403764. This way makes edge lighting possible by the use of LEDs as a light source, where a transparent panel is the lighted element. Aspect of the invention. The aspect of the invention in the edge lighted optical device consists in the fact that on one whole plane of the transparent panel are formed light reflecting convex elements, at the same time the inner surfaces of the longitudinal convex elements are coated with a light reflecting film of mirror properties, and the longitudinal convex elements beneficially make one part with the transparent panel.
The plane put opposite to the plane not being an edge of linkage with another transparent panel, not parallel to it, is arranged with the other one under a selected angle, at the same time the arrangement angle of the plane where longitudinal convex elements are located, is selected with the respect of width and thickness of the transparent panel.
Light reflecting longitudinal convex elements are situated on the plane of the transparent panel mutually parallel with convex parts directed to the run of light rays emitted by a visible light source, at the same time the light diffusion takes place on the mirror surface of the convex part of the longitudinal convex element, at the same time the convex part has an outer surface covered with spatial elements of any shape of the cross-section.
The outer size of the longitudinal convex element is selected respecting a width of the transparent panel.
The light diffusing film is coated by means of vacuum plating with aluminum or other metal of similar light diffusing features.
Transparent panels are connected with each other by linking edges during their manufacturing process and make one homogeneous, transparent panel. Beneficial effects resulting from the use of the aspect of the invention. The use of the edge lighted devices made according to the aspect of the invention decreases weight and thickness of the light appliances. A beneficial result of the use of the invention is a high light efficiency of the device. It renders into even illumination of the whole panel, which is especially beneficial in advertising or lighting systems, e.g.: large area billboards.
According to the aspect of the invention, edge lighted panels may be used in very flat lighting panels, lighting systems in large trade centers and also in buildings of public services.
The invention described above is designed especially for large flat advertising elements where enlarged contrast of underlighted image and reduced weight of the whole equipment are required. The use of the aspect of the invention will cause that a flat advertising element is much better visible with increased luminosity., e.g. during a day. The aspect of the invention can also be used for production of flat-lighted plafonds of different outer size. Lighting elements where the aspect of the invention is used can be applied for lighting of apartments, offices, and large store areas.
Description of the drawing figures. The aspect of the invention is shown on its embodiment examples in a drawing, where: Fig. 1 is a schematic view of the edge lighted optical device; Fig. 2 is a top view of the edge lighted optical device; Fig. 3 is a perspective view of the edge lighted optical device; Fig. 4 is a perspective view of convex elements; Fig. 5 is an enlarged cross-section of the longitudinal convex elements; Fig. 6 is a cross-section of the two linked edge lighted optical devices; Fig. 7 is an enlarged perspective view of the longitudinal convex elements with located spatial elements;
Fig. 8 is a schematic top view of a fragment of longitudinal convex elements on the surface of which spatial elements are located.
The object of the invention has been presented in the drawing in form of Fig. 1 up to Fig. 8, at the same time Fig. 1 is a schematic cross-sectional view of the edge lighted optical device, where all details concerning the aspect of the invention have been included respecting the structure of the device.
In the edge lighted optical device, presented in Fig. 1 - 8, there are the following elements with their location:
Transparent panel lj
Visible light source 2;
Light inlet edge of panel 3;
Light rays 4;
Light diffusion 5;
Longitudinal convex elements 6;
Light reflecting metal covered layer 7;
Convex part 8;
Inner surface 9;
Spatial elements 10;
Width ϋ;
Thickness 12;
Linkage edge 13; Angle (alfa) 14; Plane A; Plane B.
Respecting the significant features of the invention the structure of the device consists in the fact that on one whole plane A of the transparent panel I, light reflecting longitudinal convex elements 6 have been formed, at the same time, inner surfaces 9 of longitudinal convex elements are coated with a light reflecting film 7 of mirror features, and longitudinal convex elements 6 make one unit with panel I.
Another characteristic feature of the device structure is the fact that plane A pposite to the other plane B, which is not the light inlet edge 3 of the transparent panel , is set up under a selected angle, at the same time the angle 14 of the plane B on which longitudinal convex elements 6 are located in relation to the light inlet edge 3, is selected with respect of width 11 and thickness 12 of the transparent panel , whereas the light reflecting longitudinal convex elements 6 reflecting the light are located on plane B of the transparent panell parallel to each other and are directed with the convex part towards the run of light rays 4 emitted by visible light source 2, at the same time, light diffusion 5 takes place on the mirror surface of the convex part 8 of the longitudinal convex element 6, and the convex part 8 has an outer surface covered with spatial elements 10 of any shape of their cross-section.
Furthermore, the solution is characterized by the fact that the outer size of the longitudinal convex element 6 is selected with respect to width JJ, of the transparent panel I. The light reflecting film 7 is coated by means of vacuum metal plating with aluminum or other metal of similar light reflecting properties. In other solution transparent panels I are linked with link edges 3 during a production process and make one transparent panel unit. The device operates as follows: directing a visible light source 2 through the light inlet edge 3 of the transparent panel 1, light rays 4 run towards the surface of longitudinal convex elements 6 where light diffusion and reflection 5 take place on the metal coated film 7. As the result of parallel location of longitudinal convex elements 6 and arranging them at the selected angle 14, the light is reflected and diffused on the whole area of the transparent panel I.
Similarly is conducted the light diffusion process with the use of spatial elements 10 on the surface of longitudinal convex elements 6 and with the light source 2 directed to the light inlet edge 3 through the transparent panel I when light rays 4 run towards the surface of longitudinal convex elements 6, where angularly enlarged light diffusion 5 takes place by observing light reflection and diffusion on a light reflecting metal coated film 7 located on spatial elements K). Due to parallel located longitudinal convex elements 6 and arranging them under a selected angle 14, the light is reflected and diffused on the whole area of the transparent panel 1.

Claims

Claims
1. The edge lighted optical device in form of a transparent panel supplied by visible light through a light inlet edge characteristic of the fact that on the whole plane (B) of the transparent panel (1) are formed light diffusing longitudinal convex elements (6) and at the same time inner surfaces (9) of longitudinal convex elements (6) are coated with a light diffusing film (7) of mirror properties, whereas the longitudinal convex elements (6) make beneficially a whole with the transparent panel (I).
2. The optical device according to Claim No. 1 characteristic of the fact that the plane (A) opposite to the plane (B), which is not a light inlet edge (3) of the transparent panel (V), is arranged beneficially towards it under a selected angle, at the same time the angle (14) of the plane (B) arrangement on which longitudinal convex elements (6) are located in relation to the light inlet edge (3) is selected in respect of width (11) and thickness (12) of the transparent panel (V).
3. The optical device according to Claim No. 1 characteristic of the fact that the light reflecting longitudinal convex elements (6) are located on the plane of the transparent panel (V), beneficially parallel to each other and are directed with the convex part (8) towards the run of the light rays (4) emitted by a visible light source (2), at the same time light diffusion (6) takes place on the mirror surface of the convex part (8) of the longitudinal convex element (6), at the same time beneficially the convex part (8) has an outer surface coated with spatial elements (10) of any shape of their cross-section.
4. The optical device according to Claim No. 1 characteristic of the fact that the outer size of the longitudinal convex element (6) is selected in respect of width (I V) of the transparent panel (V).
5. The optical device according to Claim No. 1 characteristic of the fact that the light reflecting film (7) is coated beneficially by means of vacuum metal plating with aluminum or other metal of similar light reflecting properties.
6. The optical device according to Claim No. 1 characteristic of the fact that transparent panels (1) are beneficially linked with linking edges ( 3) during a production process and make one transparent panel unit.
PCT/PL2001/000091 2000-11-16 2001-11-14 Edge lighted optical device WO2002040919A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002218580A AU2002218580A1 (en) 2000-11-16 2001-11-14 Edge lighted optical device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PLP.343963 2000-11-16
PL34396300A PL343963A1 (en) 2000-11-16 2000-11-16 Edge-illuminated optical device

Publications (2)

Publication Number Publication Date
WO2002040919A2 true WO2002040919A2 (en) 2002-05-23
WO2002040919A3 WO2002040919A3 (en) 2004-02-26

Family

ID=20077755

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2001/000091 WO2002040919A2 (en) 2000-11-16 2001-11-14 Edge lighted optical device

Country Status (3)

Country Link
AU (1) AU2002218580A1 (en)
PL (1) PL343963A1 (en)
WO (1) WO2002040919A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2411947A (en) * 2004-03-11 2005-09-14 Sortex Ltd Light guide assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5237641A (en) * 1992-03-23 1993-08-17 Nioptics Corporation Tapered multilayer luminaire devices
EP0573051B1 (en) * 1992-06-04 1997-01-29 Tosoh Corporation Back lighting device
US5961198A (en) * 1996-02-02 1999-10-05 Hitachi, Ltd. Liquid crystal display device and method of manufacturing backlighting light guide panel therefor
WO2001004539A1 (en) * 1999-07-08 2001-01-18 Physical Optics Corporation Light pipe having one or more integral diffusers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5237641A (en) * 1992-03-23 1993-08-17 Nioptics Corporation Tapered multilayer luminaire devices
EP0573051B1 (en) * 1992-06-04 1997-01-29 Tosoh Corporation Back lighting device
US5961198A (en) * 1996-02-02 1999-10-05 Hitachi, Ltd. Liquid crystal display device and method of manufacturing backlighting light guide panel therefor
WO2001004539A1 (en) * 1999-07-08 2001-01-18 Physical Optics Corporation Light pipe having one or more integral diffusers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2411947A (en) * 2004-03-11 2005-09-14 Sortex Ltd Light guide assembly
GB2411947B (en) * 2004-03-11 2007-07-11 Sortex Ltd Light guide assembly

Also Published As

Publication number Publication date
PL343963A1 (en) 2002-05-20
AU2002218580A1 (en) 2002-05-27
WO2002040919A3 (en) 2004-02-26

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