Cone Shaped Focusing Lens

摘要

An optical assembly can be used in various optical devices such as optical proximity sensors, gesture sensors, or imaging sensors. The optical assembly may include a lens assembly and a light detector. The lens assembly may be configured to limit off axis rays at a central area of the light detector. The lens assembly can be a high aspect ratio lens assembly.

主权项

1. An optical assembly comprising:
a receiver die having a central area; a lens assembly optically coupled with the receiver die and encapsulating at least a portion of the receiver die, wherein the lens assembly comprises a focal lens surface having an optical axis portion extending from the focal lens surface to the receiver die, and wherein the lens assembly further comprises a base portion interposed in a base portion arrangement between the focal lens surface and the receiver die configured to substantially limit off axis rays at the central area of the receiver die collected via the focal lens surface.