Patent ID: 8373822
Filing Date: 2013-02-12
Classification: G02B

Abstract:
1. A surface emitting device, comprising: a light guide plate having a light outgoing surface and a reflection surface which are opposed to each other; a reflection sheet provided on the reflection surface of the light guide plate; and a light emitting diode light source that includes at least one light emitting diode element arranged and configured so that light emitted from the light emitting diode element enters the light guide plate through a light incoming end surface of the light guide plate, wherein the light guide plate includes a concave portion correspondingly to the at least one light emitting diode element on a one-to-one basis on a side of the reflection surface just in front of the light emitting diode light source, the concave portion extending from the light incoming end surface into the light guide plate and opposing the light emitting diode element, and wherein the light emitted from the light emitting diode element having the maximum luminous intensity enters the light incoming end surface at which the concave portion is present.