Patent ID: 8457457
Filing Date: 2013-06-04
Classification: G02B,H01L

Abstract:
1. A monolithic lens array comprising: a plurality of first lens surfaces on which a plurality of lights each emitted from a plurality of light emitting elements arranged in parallel are incident; a reflecting/transmission surface which reflects part of lights emitted from the plurality of first lens surfaces, and allows a rest of lights to transmit; a first refracting surface which refracts traveling directions of the lights transmitted through the reflecting/transmission surface, so as to be parallel to the lights emitted from the plurality of first lens surfaces; a first concavity between the reflecting/transmission surface and the first refracting surface such that the lights transmitted through the reflecting/transmission surface to the first refracting surface travel through the first concavity; a plurality of second lens surfaces which emit the lights refracted on the first refracting surface, toward end surfaces of a plurality of optical fibers arranged in parallel; a second refracting surface which refracts traveling directions of the lights reflected on the reflecting/transmission surface, so as to be parallel to the lights emitted from the plurality of first lens surfaces; and a transmission surface which allows the refracted lights from the second refracting surface to pass through the transmission surface; a second concavity between the second refracting surface and the transmission surface such that the lights reflected from the reflecting/transmission surface to the transmission surface travel through the second concavity; and one or a plurality of third lens surfaces which emit the lights refracted on the second refracting surface, toward light receiving elements.