Patent ID: 7294821
Filing Date: 2007-11-13
Classification: G02B

Abstract:
1. An optical module, comprising: a light-emitting element array comprising plural light-emitting elements arrayed in parallel to each other; a mirror provided at a specified angle to the optical axis of the light-emitting element array, the mirror allowing optical signals emitted from the light-emitting elements to be transmitted through but partially reflected off the mirror; a monitoring light-receiving element array comprising monitoring light-receiving elements arrayed in parallel to the light-emitting element array, the monitoring light-receiving element array monitoring reflected light of each light-emitting element of the light-emitting element array; and a convex lens interposed between the mirror and the light-emitting element array, the convex lens having an effective diameter larger than the distance between the respective optical axes of the mutually most-distant two light-emitting elements of the light-emitting element array, the convex lens causing the incident optical signals from the light-emitting elements of the light-emitting element array to respectively form parallel light, and causing their respective optical axes to cross each other on or adjacent to the surface of the mirror, to emit plural optical signals reflected off the mirror, and make the respective optical axes of the emitted optical signals parallel to each other to collect the parallel optical signals into the monitoring light-receiving elements respectively.