COMPACT LIGHT SENSING MODULES INCLUDING REFLECTIVE SURFACES TO ENHANCE LIGHT COLLECTION AND/OR EMISSION, AND METHODS OF FABRICATING SUCH MODULES

摘要

The disclosure describes light sensing optoelectronic modules that include reflective surfaces to enhance light collection and/or light emission. For example, an optoelectronic module can include a light sensing element mounted on a substrate. A spacer over the substrate has a through-hole over the light sensing element. The through-hole is defined by a surface that is at least partially sloped or curved with respect to a plane of the substrate. The surface is highly reflective for light detectable by the light sensing element. Various methods for fabricating the modules are described as well.

主权项

1. A method of fabricating, in parallel, a plurality of light sensing or light emitting modules, the method comprising:
providing a spacer structure having through-holes each of which is defined by a surface that is at least partially sloped or curved with respect to a plane of the spacer structure; applying a reflective coating to the at least partially sloped or curved surfaces; and attaching the spacer structure to a substrate wafer on which are mounted a plurality of light sensing or light emitting elements, wherein each light sensing or light emitting element is aligned with a respective one of the through-holes.