Front light extraction film for light guiding systems and method

Details Front light extraction film for light guiding systems and method Front light extraction film for light guiding systems and method

1996-11-21

1999-11-30

Ngo, Hung N.

Optical waveguides

With optical coupler

Movable coupler

385 43, 385146, 385129, G02B 626

Patent

active

059956909

ABSTRACT:
The present invention is directed to a front light extraction tape for coupling light out of a light guiding device. The tape has a flexible, light transmissive outer portion and a light coupling element secured to a lower surface of the outer portion without using adhesive. An input surface of the light coupling element is contactable with an output surface of the light guiding device for receiving light therefrom. A reflecting surface of the light coupling element is aligned so as to reflect light received into the light coupling element through the light transmissive outer portion. The light coupling element may be formed integrally with the outer portion so as to avoid a material interface between the light coupling element and the outer portion.

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patent: 5555329 (1996-09-01), Kuper et al.
patent: 5696865 (1997-12-01), Beeson et al.

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