Sheet-shaped lightguide member, operation panel-lighting device and electronic device
AssigneeCitizen Electronics Co., Ltd.
InventorsTatsuro Yamada, Hiroto Isoda, Kenji Kusano
Life of this patent
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AssigneeCitizen Electronics Co., Ltd.
InventorsTatsuro Yamada, Hiroto Isoda, Kenji Kusano
Estimating the term…
A sheet-shaped lightguide member has a first surface (11A), which is divided into at least two areas. The sheet-shaped lightguide member has the first surface (11A) and a second surface (11B) that face each other and a peripheral edge surface (11C). The lightguide member receives light through at least a part of the peripheral edge surface, guides the light, and emits the guided light from the first surface (11A) serving as a light exit surface. The lightguide member is divided into the at least two light exit areas (14A, 14B) and has a light-blocking part (18) provided along a boundary between mutually adjacent light exit areas to block transmission of light between the adjacent light exit areas.
A sheet-shaped lightguide member comprising:
A lighting device comprising:
Dependencies are inferred from the claim text.