Patent ID: 8366307

Claim:
A semiconductor light emitting device for emitting light in a direction substantially parallel to a surface on which the semiconductor light emitting device is to be held, the semiconductor light emitting device comprising: a semiconductor light emitting element configured to emit light in a light emitting direction substantially parallel to the surface on which the semiconductor light emitting device is to be held; a base substrate having a substantially planar main surface on which the semiconductor light emitting element is held, the main surface being substantially parallel to the surface on which the semiconductor light emitting device is to be held, the base substrate having a cutoff portion defined forward of the semiconductor light emitting element in the light emitting direction, the cutoff portion being defined at a position where light emitted from the semiconductor light emitting element crosses a plane containing the main surface; and a light-transmitting first sealing resin provided on the base substrate, the first sealing resin configured to bury the semiconductor light emitting element and filling the cutoff portion, wherein light emitted from the semiconductor light emitting element can travel through the cutoff portion.