Illumination – Edge lighted panel – Light guide
Reexamination Certificate
2007-12-18
2007-12-18
O'Shea, Sandra (Department: 2875)
Illumination
Edge lighted panel
Light guide
C362S608000, C362S621000
Reexamination Certificate
active
11363214
ABSTRACT:
A surface light source device for illuminating a displaying member of a display comprises a light guide plate and primary light source. Primary light enters into a first guiding portion through an end face (incidence face) thereof extending in an extending direction, then inner-propagating and entering into any second guiding portion gradually meantime. A major part thereof is inner-reflected by an inner-reflection face (first side face) to be directed to a guiding-emitting-portion, then being outputted from an emission face gradually. The first side face makes a sharp angle α with respect to the extending direction at a portion connected to the guiding-emitting-portion. Second guiding portion has a second side face which is located on a side nearer to the incidence face and makes a sharp angle greater than α at a portion connected to the first guiding portion.
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patent: 6474826 (2002-11-01), Tanaka et al.
patent: 2006/0109684 (2006-05-01), Nesterenko et al.
patent: 2006/0285356 (2006-12-01), Tseng
patent: 3496806 (2003-11-01), None
Enplas Corporation
Lee Gunyoung T.
Staas & Halsey , LLP
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