Light guide device having improved light efficiency and...

Details Light guide device having improved light efficiency and... Light guide device having improved light efficiency and...

2007-02-13

2007-02-13

Alavi, Ali (Department: 2875)

Illumination

Edge lighted panel

Light guide

C362S622000, C362S615000, C349S065000

Reexamination Certificate

active

11005324

ABSTRACT:
A light guide device includes a triangular prism unit and a plurality of quadrate prism units. The triangular prism unit has a first light entrance side, a first light exit side angled relative to the first light entrance side, and a first light transition interfacial side angled relative to the first light entrance side and the first light exit side. The first light transition interfacial side has a coating applied thereon. The quadrate prism units are connected optically to the triangular prism unit. Each of the quadrate prism units has a second light entrance side, a second light transition interfacial side opposite to the second light entrance side, and a second light exit side interconnecting the second light entrance side and the second light transition interfacial side. The second light transition interfacial side has a coating applied thereon.

REFERENCES:
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patent: 5390276 (1995-02-01), Tai et al.
patent: 5764322 (1998-06-01), Mamiya et al.
patent: 5896232 (1999-04-01), Budd et al.
patent: 6104454 (2000-08-01), Hiyama et al.
patent: 6829095 (2004-12-01), Amitai
patent: 11024587 (1999-01-01), None

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