Patent ID: 9046667
Filing Date: 2015-06-02
Classification: G02B

Abstract:
1. A photoelectric conversion device comprising: a circuit board; a plurality of light-emitting modules mounted on the circuit board; a plurality of light-receiving modules mounted on the circuit board and being apart from the light-emitting modules; and an optical coupling module mounted on the circuit board and comprising a first optical surface, a second optical surface perpendicular to the first optical surface, a reflection surface oblique relative to the first optical surface and the second optical surface, and a plurality of first converging lenses, the first converging lenses formed on the second optical surface and corresponding to the light-emitting modules and the light-receiving modules, the first optical surface facing the light-emitting modules and the light-receiving modules, the reflection surface configured for reflecting parallel light beams from the first optical surface toward the first converging lenses and for reflecting parallel light beams from the first converging lenses toward the first optical surface; and a lens strip mounted on the circuit board and comprising a body portion and a plurality of second converging lenses, the body portion comprising an upper surface and a lower surface opposite to the upper surface, the lower surface defining a receiving cavity, the second converging lenses formed on the upper surface, the light-emitting modules and the light-receiving modules received in the receiving cavity and aligned with the second converging lenses, and the lens strip configured for converting light beams from the light-emitting modules into parallel light beams and directing the light beams into the optical coupling module, and converging and directing light beams from the optical coupling module to the light-receiving modules, wherein the optical coupling module further comprises a top surface and a bottom surface opposite to the top surface, the top surface defines an elongated top recess having a first inner surface parallel to the top surface, a second inner surface perpendicularly interconnected between the first inner surface and the top surface, and the reflection surface obliquely interconnected between the first inner surface and the top surface, the bottom surface defines a bottom recess having the first optical surface at the bottom thereof, and the first optical surface is substantially parallel to the top surface and the bottom surface.