COMPOSITE OPTICAL DEVICE

摘要

Disclosed is a composite optical device, particularly a composite optical device wherein a second optical unit is joined to a first optical unit. This composite optical device is excellent in environmental resistance. Specifically disclosed is a composite optical device (10) comprising a first glass optical unit (11) and a second glass optical unit (14). The second optical unit (14) is joined to the first optical unit (11) on a lens surface (12) of the first optical unit (11), and has a lens surface (15) and a contact surface (16). The lens surface (12) and the lens surface (15) respectively have a first rough surface (12a) and a second rough surface (15a).