Photoelectric module and optical device

A photoelectric module, comprising:

• an optical device including an optical function element array made of a first base material, and a plurality of light emitting/receiving elements made of a second base material,
• wherein the optical function element array includes an optical substrate and a plurality of optical function elements, the optical substrate having a first surface and a second surface, and the optical function elements being integrated with the optical substrate and being arranged one-dimensionally or two-dimensionally, and
• the light emitting/receiving elements and their respective optical function elements face each other with the optical substrate in between to be located on a same axis in a direction perpendicular to the optical substrate, and the light emitting/receiving elements are disposed on the second surface with a space in between while being separated in units of a smaller number than array number in the optical function element array;
• and
• a plurality of front end circuits, wherein wiring lengths between the light emitting/receiving elements and their respective front end circuits are substantially equal.