Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2006-10-27
2009-06-16
El Shammaa, Mary A (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S129000, C385S146000, C359S443000, C359S641000
Reexamination Certificate
active
07548670
ABSTRACT:
A light collimation device comprising a wave guide plate (100) having a first surface (101), an opposing faceted second surface (102) comprising a plurality of essentially planar parallel portions (103) and a plurality of facets (104) connecting said planar parallel portions (103) and at least one surface (105) for receiving light is provided. Each facet (104) is formed at a non-right angle (β) to said planar parallel portions (103) and the device further comprises a plurality of collimating refractive elements (106), wherein each collimating refractive element (106) corresponds to a separate one of the plurality of facets (104), and is located in the beam path of at least the major part of light being reflected on the corresponding facet (104) and extracted from said wave guide plate (100).
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Cornelissen Hugo Johan
Ijzerman Willem Lubertus
Krijn Marcellinus Petrus Carolus Michael
Vissenberg Michel Cornelis Josephus Marie
El Shammaa Mary A
Koninklijke Philips Electronics , N.V.
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