Patent ID: 7125174

Claim:
An optical module, comprising: a main housing having a first attachment section that can affix an optical fiber, a second attachment section located in opposition to said first attachment section, and a third attachment section provided at a first angle to a straight line which connects said first and second attachment sections; a light-emitting component supported by said second attachment section; a light-receiving component supported by said third attachment section; a filter support member being a cap that optically isolates the light-receiving component from the main housing, the filter support member supported by said third attachment section; and first and second optical filters supported by said filter support member, said filter support member having a first surface which has a second angle different from said first angle to said straight line and a second surface which is substantially perpendicular to said light-receiving component, said first optical filter being mounted on said first surface of said filter support member, said second optical filter being mounted on said second surface of said filter support member, wherein the second optical filter mounted on the second surface and the cap eliminate all stray or scattered light within the main housing, that is not incident on the second optical filter, from reaching the light-receiving component.