WO2013023242A1 - Illumination device including matrix of light elements - Google Patents
Illumination device including matrix of light elements Download PDFInfo
- Publication number
- WO2013023242A1 WO2013023242A1 PCT/AU2012/000941 AU2012000941W WO2013023242A1 WO 2013023242 A1 WO2013023242 A1 WO 2013023242A1 AU 2012000941 W AU2012000941 W AU 2012000941W WO 2013023242 A1 WO2013023242 A1 WO 2013023242A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- panel
- face
- illumination device
- matrix
- light
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/18—Edge-illuminated signs
-
- 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
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/04—Fastening of light sources or lamp holders with provision for changing light source, e.g. turret
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2105/00—Planar light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- 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
- G02B6/0065—Manufacturing aspects; Material aspects
Definitions
- This invention relates to an illumination device and more particularly relates to a side lit panel for illuminating an area or an object.
- Existing lighting arrangements for lighting an area have used fluorescent lights typically with one or more separate diffuser panels.
- Each diffuser panel has a series of raised portions or projections on one or both sides that are designed to receive light emanating from the fluorescent tube and dispersing light in different directions so that, for example when lighting a room, an area is illuminated as widely as possible.
- fluorescent tubes use an excessive amount of power, typically up to HOW by four tubes in a one square metre panel. Furthermore, there is increased maintenance associated with having to replace the tube with a new tube. This places a particularly large work load in office spaces where many fluorescent tubes are used and will need to eventually be replaced. Such tubes are separate to the diffuser panel and therefore make it awkward and time costly to replace each tube. The diffuser panel has to be removed, followed by the old tube, then the replacement tube is inserted and thereafter the diffuser panel replaced. This is a very time consuming process.
- the patterns arranged on each of the diffuser panels are not efficient enough to provide an even distribution of light and even power output to all parts of the area to be illuminated.
- the present invention seeks to overcome one or more of the above disadvantages by providing an improved illumination device.
- an illumination device including:
- a panel having a first face, a second face, a first side and a second side, the panel further having a matrix of light elements extending through the panel;
- the matrix may extend in a plane from the fust side to the second side within the panel and not at the first face or second face.
- the matrix of light elements can extend at an angle with respect to the first face and the second face.
- the matrix may extend substantially at the middle of the panel from the first side to the second side.
- the matrix may extend from the first side to the second side at either the first face or the second face.
- the panel may be formed by at least two sub-panels placed back-to back. One or both of the adjacent faces of each set of back-to-back sub-panels can have the matrix extending therealong. Each sub-panel preferably has substantially the same width.
- the device may wither include a diffuser panel attachable to either the first face or the second face.
- the device may further include a second diffuser panel attachable the other of the fust face or the second face.
- the first side of the panel preferably is substantially parallel to the second side of the panel.
- the light source may extend adjacent the entire first side or adjacent the entire second side of the panel. Alternatively, the light source extends adjacent the entire first side and the entire second side of the panel.
- an illumination device including:
- a panel having a first face, a second face, a first side and a second side, the panel further having a matrix of light elements extending through the panel;
- light from the light source enters the panel through the first side or second side to impinge on the light elements in the matrix and deflect therefrom through the first face or the second face;
- the matrix extends in a plane from the first side to the second side within the panel and not at the first face or second face.
- the illumination device according to either the first or second aspect may be insertable into a mounting attached to a structure comprising a pair of brackets and at least one fastening device.
- Figure 1(a) is a side view of an illumination device according to an embodiment of the invention having a panel with a matrix of light elements on a first face and a second face;
- Figure 1(b) is a side view of an illumination device according to another embodiment of the invention having a panel with a matrix of light elements on a first face
- Figure 1(c) is a side view of an illumination device according to a further embodiment of the invention having a panel with a matrix of light elements located at about the middle region of the panel;
- Figures 1(d) and 1(e) are side views of an illumination device according to further embodiments of the invention having a pair of sub-panels formed back-to-back with a matrix of light elements between the sub-panels;
- Figure 2 is a sectional view of part of a panel fitted to a mounting bracket of a structure
- Figure 3 is a sectional view of the whole panel shown fitted to a pair of mounting brackets of a structure.
- an illumination device (100) that includes a panel or core (102) made from a substantially transparent material such as an acrylic sheet or perspex sheet.
- a panel or core (102) made from a substantially transparent material such as an acrylic sheet or perspex sheet.
- an array or matrix of light elements such as dots, (106).
- Alternative names include a light element matrix or dot matrix of light elements.
- a dot matrix or dot array of light elements on a lower or second face (108) of panel (102) there is also a dot matrix or dot array of light elements (110).
- Each of the matrices (106) and (110) generally comprise minute dots collectively having a diameter of at least 50 ⁇ , that can be spaced evenly or at regular intervals. Typical spacing between dots is from 0.1 ⁇ up to 120 or ISOum.
- the larger spacing is generally further away from the light source (112) adjacent first side or edge (114) for producing light through the interior of the panel ( 102).
- the diameter of the dots in each array can be made progressively larger the further away the dots are from the light source (112). Near to the light source (112), the dots are generally made much closer together and are smaller in size compared to larger distances from the light source (112). By doing this, a much more even distribution of light is available through the panel (102) and in the illuminated area.
- An array of light sources (112) will be distributed along first side or edge (114) and alternatively or in addition along second side or edge (IIS).
- the light sources (112) are light emitting devices or LEDs. Single or double LEDs can be used providing an output from either face (104) or (108) of up to 10,000 lumens/square metre, or up to 4,950 lumens/metre or alternatively up to 45 watts/metre.
- Light that enters the panel (102) through first side (114) will be reflected and refracted off the dots in each array (106, 110). Internal refraction ftom the top face (104) and the bottom face (108) will either be reflected or refracted elsewhere from within the panel (102). Generally an even distribution of light protrudes through the space beyond each of the faces (104, 108) as indicated by the arrows to illuminate an area or an object, such as an advertising board.
- a first or top diffuser (116) and a second or bottom diffuser (118) are available to provide protection to the array of dots (106, 110). This also assists in diffusing and directing the light emanating from the core or interior panel (102),
- FIG. IB there is shown a single dot matrix of Ught elements (106) on the top face (104).
- light originates from the array of light sources (112) through first side (114) into the interior of the core panel (102).
- the light is then emitted through the top face (104) in the direction of the arrows shown and through diffuser (116) and also through the bottom face (108) through diffuser (118) as indicated by the arrows.
- diffuser 116
- the bottom face (108) through diffuser (118) as indicated by the arrows.
- the reflected light will then proceed to move in a direction back to the arcay of dots (106) to either go through the difruser (116) or be reflected or refracted again from the dots.
- the reflective layer is preferably 2mm to 3mm thick and can be made from acetate sheet or polymer sheet.
- the dot matrix (106, 110) can be formed by a laser etching process or another etching process as is known in the art.
- a laser can be programmed to make specific dot matrix patterns such as the size of each of the dots and the spacing between each of the dots, Bach of the outer diffuseis (116) and (118) can be bonded to respective faces (104, 108) of the core panel (102).
- the dot matrix (106) being on top face (104)
- it can be located on bottom face (108) with a reflective layer optionally formed at or around top face (104) to affect the light in a manner similar to that described in Figure IB.
- FIG. 1 C there is shown a further embodiment of the invention in which a single dot matrix of light elements (120) is shown at an interior plane of the core panel (102).
- the dot matrix (120) is substantially in the middle of the core panel (102). It can be produced by a laser etched pattern as is known in the art. It is found that a more even distribution of light is possible through the use of such a subsurface etched panel.
- Light input by the LED array (112) to the interior panel (102) is reflected and refracted off each of the dots in the array (120) and can pass through or be reflected from each of the surfaces (104, 108).
- the light component which is reflected within the panel (102) can be reflected or refracted by any one or more of the dots in the array (120) and then output through either the diffusers (116, 118).
- the thickness of the core panel is between 10mm and 16mm and that of each diffuser about 3mm.
- the matrix of light elements ( 120) is shown in a plane substantially parallel to faces (104, 108), the matrix can be at an angle with respect to faces (104, 108) or be curved in traversing a path from side (114) to side (115) or a combination of curved, angled or parallel.
- a range of angles between 5 degrees and 10 degrees, and preferably 7 degrees, of the plane of the matrix with respect to either faces (104) and (108) can be used.
- the etching of the light element array (120) inside the core (102) can be at different angles with respect to these faces.
- the spacing and size of the dots in the matrix can be varied.
- Figures ID and IE there are shown alternative embodiments to Figure 1 C whereby two separate centre panels (122, 124) are joined or bonded together back to back.
- Either one or both of the panels (122, 124) can have an array of dots etched at a surface.
- this can be on a bottom surface (123) and in the case of panel (124) the dots can be etched on a top surface (125).
- the panel (122) is reversed or turned over so that a dot matrix on top surface (127) in Figure ID is turned over, and then bonded to panel (124) so that the array or dot matrix (126) exists at the middle of the joined panels (122, 124). Operation of the distribution of the light emanating from the array (112) is similar to that described in relation to Figure 1C.
- each panel (122, 124) is aligned the same way so that the array of dots are at bottom surface (123) of panel (122) and the array of dots on panel (124) are at the top surface (125) of panel (124) and effectively increase the number of dots at the interface between the panels (122, 124).
- the panels (122, 124) are aligned in a reverse manner.
- the thickness of each panel (122. 124) is preferably about 5mm but can be made a different thickness.
- Bracket (200) has a clip (202) which can be opened and closed in order to release an existing panel assembly (100) and replace it with a new panel assembly (100).
- a securing means (203), such as a magnet on each of the clip (202) and panel (100), is used to insert and replace an old panel.
- an end (204) of clip (202) distal from the securing means (203) is attachable to bracket (200) in a corresponding groove by suitable fastening means, such as a magnet or Velcro hook and loop material
- suitable fastening means such as a magnet or Velcro hook and loop material
- the LED strip (112) on each panel (200) has a common lead/plug which can be inserted into a corresponding socket of an LED driver in or around the bracket (200).
- the LED driver can be used to control dimming of the panel or to control colour intensities of the LEDs.
- FIG. 3 Shown in Figure 3 there is a panel (100) installed in a pair of brackets (200, 300) having respective clips (202, 302).
- Each of the panels (100), including diffusers (116, 118) are typically 0.5 to 2 square metres in area.
- the size and spacing of the dots used depends on the distance from the LBDs and the size of the panel. Possible configurations for the light elements are spheres, half spheres, circles and diamonds.
- the percentage of light reflected or refracted by the matrix of light elements (106, 110, 120) will vary with the design and position of the matrix or matrices in respective devices.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2012297561A AU2012297561A1 (en) | 2011-08-12 | 2012-08-10 | Illumination device including matrix of light elements |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2011903230A AU2011903230A0 (en) | 2011-08-12 | Illumination device | |
AU2011903230 | 2011-08-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013023242A1 true WO2013023242A1 (en) | 2013-02-21 |
Family
ID=47714612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2012/000941 WO2013023242A1 (en) | 2011-08-12 | 2012-08-10 | Illumination device including matrix of light elements |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2012297561A1 (en) |
TW (1) | TW201314128A (en) |
WO (1) | WO2013023242A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4860171A (en) * | 1987-10-20 | 1989-08-22 | T. Chatani & Co., Ltd. | Surface illuminating apparatus |
US5625968A (en) * | 1990-09-20 | 1997-05-06 | Illumination Research Group, Inc. | Display system |
US20010010631A1 (en) * | 1996-09-26 | 2001-08-02 | Eleven Lighting Pty, Limited | Illuminated display systems |
-
2012
- 2012-08-10 WO PCT/AU2012/000941 patent/WO2013023242A1/en active Application Filing
- 2012-08-10 AU AU2012297561A patent/AU2012297561A1/en not_active Abandoned
- 2012-08-10 TW TW101129024A patent/TW201314128A/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4860171A (en) * | 1987-10-20 | 1989-08-22 | T. Chatani & Co., Ltd. | Surface illuminating apparatus |
US5625968A (en) * | 1990-09-20 | 1997-05-06 | Illumination Research Group, Inc. | Display system |
US20010010631A1 (en) * | 1996-09-26 | 2001-08-02 | Eleven Lighting Pty, Limited | Illuminated display systems |
Also Published As
Publication number | Publication date |
---|---|
TW201314128A (en) | 2013-04-01 |
AU2012297561A1 (en) | 2014-03-27 |
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