US2009034293A1PendingUtilityA1

Light redirecting films and film systems

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Assignee: PARKER JEFFERY RPriority: Feb 23, 1999Filed: Oct 14, 2008Published: Feb 5, 2009
Est. expiryFeb 23, 2019(expired)· nominal 20-yr term from priority
Inventors:Jeffery R. Parker
F21V 5/10G02B 6/0036H01H 2221/07G02B 6/0061A61N 2005/063G02B 6/002G02B 6/006A61N 5/0621A61N 2005/0652G02B 6/0038G02B 6/0043G02B 6/0068G02B 6/0053G02B 6/0018A61B 2090/309A61M 2021/0044G02B 6/0031G02B 6/0065G02B 6/0021G02B 6/0028H01H 2219/062F21V 5/00F21V 11/00A61M 21/02
55
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Claims

Abstract

Light emitting assembly includes a generally planar optical conductor having at least one output region for emitting light and at least one light source positioned adjacent at least one light input edge located on a side or at or near a corner of the optical conductor for directing light into the optical conductor. The light source has a total length that is quite small in relation to the length and width of the optical conductor and is configured to generate light having an output distribution defined by a greater width component than height component.

Claims

exact text as granted — not AI-modified
1 . A light emitting panel assembly comprising:
 a generally planar optical conductor having at least one light input edge generally located at or near a corner; and   at least one light source configured to generate light having an output distribution defined by a greater width component than height component, said at least one light source having a total length that is quite small in relation to a length and a width of the optical conductor, said at least one light source being positioned adjacent to the input edge, thereby directing light into the optical conductor;   said optical conductor having at least one output region and a predetermined pattern of deformities configured to cause light to be emitted from said at least one output region.   
     
     
         2 . The light emitting panel assembly of  claim 1 , wherein said optical conductor is generally rectangular. 
     
     
         3 . The light emitting panel assembly of  claim 1 , wherein said at least one light source is a light emitting diode. 
     
     
         4 . The light emitting panel assembly of  claim 1 , wherein said optical conductor additionally comprises a transition region disposed between said at least one light source and said at least one output region that is configured to spread and transmit the light from said at least one light source. 
     
     
         5 . The light emitting panel assembly of  claim 1 , wherein at least some of the deformities are grooves, depressions or projections arranged in radial patterns that extend across the optical conductor with radii of curvature of the radial patterns increasing as distance away from the at least one light source increases. 
     
     
         6 . The light emitting panel assembly of  claim 1 , wherein the deformities have a well defined shape. 
     
     
         7 . The light emitting panel assembly of  claim 6 , wherein the deformities are quite small in relation to a length and a width of the optical conductor. 
     
     
         8 . The light emitting panel assembly of  claim 7 , wherein at least some of the deformities are generally arranged in radial patterns with radii of curvature of the radial patterns increasing as distance away from the at least one light source increases. 
     
     
         9 . The light emitting panel assembly of  claim 7 , wherein each of at least some of the deformities has at least a first surface and a second surface, the first surface and the second surface coming together to form a ridge, the ridge generally being curved towards the at least one light source, the first surface being generally closer to the at least one light source than the second surface, and the first surface having a larger surface area than the second surface. 
     
     
         10 . The light emitting panel assembly of  claim 7 , wherein at least some of the deformities intersect other deformities. 
     
     
         11 . The light emitting panel assembly of  claim 1 , wherein said optical conductor has oppositely facing major surfaces, and deformities on or in both of said major surfaces. 
     
     
         12 . The light emitting panel assembly of  claim 1 , wherein at least some of the deformities are arranged in a generally radial pattern facing the at least one light source. 
     
     
         13 . The light emitting panel assembly of  claim 1 , wherein the at least one light source is positioned at an oblique angle relative to a side edge of the optical conductor. 
     
     
         14 . The light emitting panel assembly of  claim 1 , wherein the density of the deformities increases as distance away from the at least one light source increases. 
     
     
         15 . The light emitting assembly of  claim 1 , wherein at least some of said deformities have at least one surface that is angled towards said at least one light source. 
     
     
         16 . A light emitting panel assembly comprising:
 a generally planar optical conductor having at least one light input edge located on a side of the optical conductor; and   at least one light source configured to generate light having an output distribution defined by a greater width component than height component, said at least one light source having a total length that is quite small in relation to a length and a width of the optical conductor, said at least one light source being positioned adjacent to the input edge, thereby directing light into the optical conductor;   said optical conductor having at least one output region and a predetermined pattern of deformities configured to cause light to be emitted from said at least one output region.   
     
     
         17 . The light emitting panel assembly of  claim 16 , wherein said optical conductor is generally rectangular. 
     
     
         18 . The light emitting panel assembly of  claim 16 , wherein said at least one light source is a light emitting diode. 
     
     
         19 . The light emitting panel assembly of  claim 16 , wherein said optical conductor additionally comprises a transition region disposed between said at least one light source and said at least one output region that is configured to spread and transmit the light from said at least one light source. 
     
     
         20 . The light emitting panel assembly of  claim 16 , wherein at least some of the deformities are grooves, depressions, or projections arranged in radial patterns that extend across the optical conductor with radii of curvature of the radial patterns increasing as distance away from the at least one light source increases. 
     
     
         21 . The light emitting panel assembly of  claim 16 , wherein the deformities have a well defined shape. 
     
     
         22 . The light emitting panel assembly of  claim 21 , wherein the deformities are quite small in relation to a length and a width of the optical conductor. 
     
     
         23 . The light emitting panel assembly of  claim 22 , wherein at least some of the deformities are generally arranged in radial patterns with radii of curvature of the radial patterns increasing as distance away from the at least one light source increases. 
     
     
         24 . The light emitting panel assembly of  claim 22 , wherein each of at least some of the deformities has at least a first surface and a second surface, the first surface and the second surface coming together to form a ridge, the ridge generally being curved towards the at least one light source, the first surface being generally closer to the at least one light source than the second surface, and the first surface having a larger surface area than the second surface. 
     
     
         25 . The light emitting panel assembly of  claim 22 , wherein at least some of the deformities intersect other deformities. 
     
     
         26 . The light emitting panel assembly of  claim 16 , wherein said optical conductor has oppositely facing major surfaces, and deformities on or in both of said major surfaces. 
     
     
         27 . The light emitting panel assembly of  claim 16 , wherein at least some of the deformities are arranged in a generally radial pattern facing the at least one light source. 
     
     
         28 . The light emitting panel assembly of  claim 16 , wherein the at least one light source is positioned at an oblique angle relative to a side edge of the optical conductor. 
     
     
         29 . The light emitting panel assembly of  claim 16 , wherein the density of the deformities increases as distance away from the at least one light source increases. 
     
     
         30 . The light emitting assembly of  claim 16 , wherein at least some of said deformities have at least one surface that is angled towards said at least one light source.

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