Patent ID: 8923671
Filing Date: 2014-12-30
Classification: G02B

Abstract:
1. An optical coupling lens for optically coupling light between an optical signal emitter, an optical fiber and an optical detector, the optical coupling lens comprising: an incident surface comprising a first lens portion and a second lens portion formed thereon; a first total reflection surface; a second total reflection surface; and an emergent surface comprising a third lens portion formed thereon; wherein the incident surface, the first total reflection surface, the second total reflection surface and the emergent surface are orderly connected to each other end to end, the third lens portion is positioned adjacent to the second total reflection surface, the first lens portion converges incident light into a parallel light beam, the first total reflection surface reflects the light beam to an intersection between the second total reflection surface and the emergent surface, the third lens portion converges a portion of the light beam and directs the converged light beam to the optical fiber, the second total reflection surface reflects the other portion of the light beam to the second lens portion, and the second lens portion converges the other portion of the light beam reflected by the second total reflection surface and directs the other portion of the light beam to the optical detector.