Patent ID: 7220952
Filing Date: 2007-05-22
Classification: H01L,H01S

Abstract:
1. An electro-optical element, comprising: a light-emitting element part; a light-receiving element part having an upper surface including an optical surface and formed directly on the light-emitting element part, light being emitted at least in a direction that the light-emitting element part and the light-receiving element part are formed in layers; and an optical member provided at least on the optical surface; wherein: a cross-sectional surface of the optical member cut by a plane parallel to the optical surface being at least one of a circle and an oval; at least the upper part of the light-emitting element part has a columnar like shape; and a longest diameter of the cross-sectional surface of the optical member being larger than a longest diameter of an upper surface of the light-receiving element part and narrower than a diameter of a columnar part of the light-emitting element part.