Patent ID: 7322721

Claim:
A side emitting device comprising: a light-emitting device to emit light; and a side emitter to change a path of at least a part of the light incident from the light-emitting device, wherein when a main direction of the light emitted from the emitting device is an upward direction, a direction opposite to the upward direction is a downward direction, and an axis perpendicular to the main direction is a horizontal axis, the side emitter comprising: a first reflecting surface to reflect the light emitted from the light-emitting device in a first range of angles close to a central axis thereof; a first refracting surface to refract the light reflected by the first reflecting surface obliquely downward with respect to the horizontal axis; and a second refracting surface to refract the light emitted from the light-emitting device in a second range of angles complementary to the first range of angles.