| 摘要 |
<p>Provided are a lens for optical communication and an optical communication module using the same, the lens achieving downsizing and improved moldability and assemblability and thereby achieving great cost reduction while enabling high-precision optical communication. Since the inner peripheral surface (21a) of a leg part (21) is a tapered surface inclined with respect to the optical axis of a lens part (22), mold releasability at the time of molding can be improved, moreover the interference with a light emitting element and a light receiving element that are provided in the leg part can be avoided, and an adjustment allowance for alignment by displacement in the direction orthogonal to the optical axis can be ensured, thereby making it possible to achieve high-precision optical coupling. Further, by ensuring the strength and downsizing of the leg part by setting the taper angle of the tapered surface small, and instead by making the inner peripheral surface (21a) of the leg part (21) a non-specular surface, the close contact area between a mold and a plastic material is reduced at the time of molding to increase mold releasability, and further by making the inner peripheral surface (21a) of the leg part (21) the non-specular surface, the occurrence of stray light noise due to internal reflection can be effectively suppressed.</p> |
