Patent ID: 8193554

Claim:
An optical member comprising: a light emitting member for emitting light and a light receiving member for receiving the light emitted from the light emitting member; a support member for supporting the light emitting member; a housing for supporting the light receiving member; a clearance between the support member and the housing, at least a part of the clearance filled with a photocurable resin so as to connect the support member to the housing; a recess for collecting excess photocurable resin that is not used to connect the support member to the housing, the recess being formed in one of the support member and the housing, the recess being adjacent to the photocurable resin that is used to connect the support member to the housing, and the recess including at least three distinct internal walls comprising a first internal wall, a second internal wall, and a third internal wall, the first internal wall directly connected to the second and third internal walls; and the recess being configured so as to allow casting of light therein to cure the photocurable resin.