Photoelectric conversion device

摘要

A photoelectric conversion device includes a circuit board, a light emitting module, a light receiving module, and an optical coupling lens. Two protrusions apart from each other extend from the circuit board. The light emitting module and the light receiving module are mounted on the circuit board and apart from each other. The optical coupling lens includes an oblique reflection surface and a recess having a bottom surface parallel to the circuit board. Two distanced posts perpendicularly extend from the bottom surface and engage with the centers of the protrusions upon assembly to ensure automatic and alignment of the light emitting module with the first converging lens, and alignment of the light receiving module with the second converging lens.

主权项

1. A photoelectric conversion device comprising:
a circuit board; two spaced protrusions formed on the circuit board; a light emitting module mounted on the circuit board; a light receiving module mounted on the circuit board and being apart from the light emitting module; and an optical coupling lens comprising a light incident surface facing toward the light emitting module and the light receiving module, a reflection surface obliquely connected to the light incident surface, a first converging lens, and a second converging lens, the first and second converging lenses formed on the light incident surface and corresponding to the reflection surface, wherein the reflection surface defines a recess located between the light emitting module and the light receiving module, the recess comprises a bottom surface parallel to the circuit board, two posts perpendicularly extend from the bottom surface and are arranged apart from each other, centers of the posts aligned with centers of the protrusions to ensure alignment of the light emitting module with the first converging lens, and alignment of the light receiving module with the second converging lens, the optical coupling lens further comprises a transparent body portion, the body portion comprises the light incident surface, the reflection surface, and a light output surface, the light incident surface perpendicularly extending from the light output surface.