Multi-scale Optics for Enhanced Light Collection from a Point Source

TL;DR

This paper demonstrates a novel multi-scale optical system that significantly improves photon collection efficiency from a point source over a wide field-of-view, using silicon micromirrors to enhance light collection without sacrificing FoV.

Contribution

It introduces a multi-scale optics approach with silicon micromirrors to enhance photon collection efficiency over a wide FoV, a novel design in optical collection systems.

Findings

Achieved 26% photon collection efficiency from a point source.

Maintained efficiency over a 10 mm object space.

Demonstrated no significant decrease in collection efficiency across the FoV.

Abstract

High efficiency collection of photons emitted by a point source over a wide field-of-view (FoV) is crucial for many applications. Multi-scale optics over improved light collection by utilizing small optical components placed close to the optical source, while maintaining a wide FoV provided by conventional imaging optics. In this work, we demonstrate collection efficiency of 26% of photons emitted by a point-like source using a micromirror fabricated in silicon with no significant decrease in collection efficiency over a 10 mm object space.