US Patent 11022812 Light emitting device and image display system

A light emitting device is provided with a first light emitter and a second light emitter. The first light emitter is provided with a first lens for making the light of the first light source wide-angle, and the second light emitter is provided with a second lens for making the light of the second light source wide-angle. The cover lens tilted with respect to a projection surface and disposed downstream of the first lens and the second lens has a curved surface shape, and the curvature center of the cover lens is different in position from a first diffusion center to be a starting point from which the first light is made wide-angle, and a second diffusion center to be a starting point from which the second light is made wide-angle.