Patent ID: 8727591
Filing Date: 2014-05-20
Classification: G02B,H04N

Abstract:
1. A light emitting device comprising: a rod-shaped light guide; a light source which inputs light to the light guide; and a prism part which changes the direction of light input from the length-wise end of the light guide, and emits redirected light from a light exit surface that is disposed opposite the prism part; wherein a parallel light forming body, which makes light emitted from the light source toward the light guide nearly parallel light, is formed at the length-wise end of the light guide; a light emitting surface of the light source is shifted in a direction perpendicular to a center axis of the light guide from the center axis of the light guide and the optical axis of the parallel light forming body toward the side closer to the prism part, or toward the side away from the prism part, for the nearly parallel light to be directed to the light exit surface of the light guide or to the prism part; the light emitting surface is perpendicular to the center axis of the light guide.