Photoelectric conversion device with protrusions

摘要

A photoelectric conversion device includes a circuit board, a light emitting module, a light receiving module, and an optical coupling lens. The circuit board includes two protrusions apart from each other. The light emitting module and the light receiving module are mounted on the circuit board and are apart from each other. The optical coupling lens includes a light incident surface, a first converging lens, a second converging lens and two through holes are defined therein for locating purposes. The first converging lens and the second converging lens are formed on the light incident surface. Centers of the through holes are aligned with centers of the protrusions to ensure the perfect alignment of the light emitting module with the first converging lens, and the perfect alignment of the light receiving module with the second converging lens.

主权项

1. A photoelectric conversion device comprising:
a circuit board comprising two protrusions apart from each other; 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 mounted on the circuit board comprising a light incident surface, a first converging portion, a second converging portion, the optical coupling lens defining two through holes, the first converging portion and the second converging portion formed on the light incident surface, the location relationship between the first converging portion and the two through holes being substantially the same as that between the light emitting module and the two protrusions, the location relationship between the second converging portion and the two through holes being substantially the same as that between the light receiving module and the two protrusions, centers of the through holes aligned with centers of the protrusions to ensure alignment of the light emitting module with the first converging portion, and alignment of the light receiving module with the second converging portion, and the through holes being spaced apart from the protrusions.