Adapter having a light-shielding shutter and optical module receptacle having a light-shielding shutter

An adapter comprising:

• a tubular housing, in which one end portion of said housing is constructed as an insertion port of an optical connector, through which an optical connector is inserted in the longitudinal direction of the tubular housing;
• a roughly L-shaped light shielding shutter, wherein the shutter is made of a resilient material and having a bottom plate secured along a bottom outer wall of the housing and an erectable portion which is erect from said bottom plate toward an optical connector insertion port side, and wherein the shutter interrupts light transmitted from an other end portion of said housing side toward the optical connector insertion port side;
• and
• a supporting plate having a bottom plate secured along the bottom outer wall of the housing and a side plate erect from said bottom plate along both side walls of the housing;
• wherein the bottom plate of said shutter is placed between the bottom outer wall of said housing and the bottom plate of said supporting plate, said shutter is fixed at said housing by causing the side plate of the supporting plate to be fixed, the erectable portion of said shutter is folded in a bottom inner wall of said housing by said erectable portion of said shutter being inserted into an optical connector when said optical connector is inserted into the adapter to enable said light to enter the optical connector, and when said optical connector is not fitted in the adapter, said light is interrupted by the erectable portion of said shutter being made erect toward said optical connector insertion port side.