Light emission element array and manufacturing method thereof
AssigneesKabushiki Kaisha Toshiba, Sharp Kabushiki Kaisha
InventorsNaoki Sato, Teruo Tsutsumi, Masaaki Katoh
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Abstract
A light emission element array comprises a substrate, a plurality of light emission elements such as light emitting diodes aranged linearly in a row on the substrate and a rod like, i.e., columnar, light converging lens unit arranged above the light emission element row in parallel thereto and adapted to diffuse and simultaneously converge the transmitted light. The light emitting surface of the light converging lens unit is made rough by a chemical treatment, blast treatment or other means.
Claims18
A light emission element array comprising:
- a substrate;
- a plurality of light emission elements arranged linearly in a row on said substrate;
- and
- rod like light converging lens means arranged above said light emission element row in parallel thereto and adapted to diffuse and simultaneously converge the transmitted light.
A method of manufacturing a light emission element array comprising the steps of:
- arranging linearly a plurality of light emission elements on a substrate to form a light emission element row;
- preparing rod like lens means;
- roughening a surface of the rod like lens means;
- and
- arranging said rod like lens means with the surface roughened above the light emission element row so that a central axis of the rod like lens means is in parallel to a central line of the light emission element row.
A method of manufacturing a light emission element array comprising the steps of:
- arranging linearly a plurality of light emission elements on a substrate to form a light emission element row;
- preparing rod like lens means by molding a mixture of a lens material and light scattering particles contained therein;
- and
- arranging the thus prepared rod like lens means above the light emission element row so that a central axis of the rod like lens means is in parallel to a central line of the light emission element row.
Dependencies are inferred from the claim text.