Patent ID: 7011457
Filing Date: 2006-03-14
Classification: G02B

Abstract:
1. An optical coupling apparatus comprising: a temperature control element on which a semiconductor light emitting element, a substrate and a lens are mounted, the semiconductor light emitting element being mounted on the substrate, and rays of light from the semiconductor light emitting element being introduced into the lens; a base on which the temperature control element is disposed; a through-hole portion formed in a housing wall portion installed on the base, penetrating through the housing wall portion and having a wall surface portion longer than a thickness of the housing wall portion; and an optical fiber communicated with the through-hole portion and receiving converted light from the lens introduced thereto; wherein a length of the substrate in a direction connecting the light emitting element to the optical fiber is within a range from 0.1 to 0.25 with respect to a length of the base sandwiched by the housing walls of the substrate.