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US 5,475,785 AGranted
Illumination devices and methods of forming same
OwnerWalter A. Johansoninventor
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Abstract
Illumination devices and methods of forming illumination devices, utilizing optical light films are disclosed. Joints useful in forming light carriers from optical light films are also disclosed.
Claims7
A light device comprising:
- a first optical light film comprising a plurality of grooves extending along a first axis of said first optical light film;
- a second optical light film comprising a plurality of grooves extending along a second axis of said second optional light film;
- wherein said grooves of said first optical light film are disposed at an angle to and in contact with said grooves of said second optical light film such that said first axis is arranged at an angle of at least 45.degree. to said second axis.
A light carrier comprising:
- an optical light tube comprising an inner surface and an outer surface;
- a substrate;
- and
- an extractor laminated to said substrate wherein said substrate-extractor laminate is disposed within and proximate to an inner surface of said tube.
1 more element
A method of forming a light carrier comprising the steps of:
- providing a first tube comprising at least one open end;
- providing a guide tube comprising a longitudinal relieved portion and a cross-section dimensioned to permit said guide tube to fit at least partially within said open end of said first tube;
- placing an optical light film and a protective sheet over said relieved portion;
- pushing said optical light film and said protective sheet through said relieved portion into said guide tube;
- and
- positioning said light film and said protective sheet in said first tube.
3 more elements
Dependencies are inferred from the claim text.