Abstract
A simple and compact telecentric lens based on two hemispheric optical elements arranged in a formation resembling an "hourglass" is proposed and evaluated. Our modeling and experimental results show the ability of this lens in achieving high resolution over a large field of view. A prototype with 500 μm total thickness is built using silicon micromachining methods for a center wavelength of 1500 nm. Experimental measurement shows near-diffraction-limited performance and good telecentricity over an 80° field of view at a numerical aperture of 0.2. All elements of the hourglass lens are in direct contact, and hence the alignment is extremely simple. We believe the proposed lens is a good candidate for compact and low-cost multi-aperture imagers.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 8752-8756 |
| Number of pages | 5 |
| Journal | Applied optics |
| Volume | 55 |
| Issue number | 31 |
| DOIs | |
| State | Published - Nov 1 2016 |
Funding
National Science Foundation (NSF) (ECCS-0901855, ECCS-1206155, ECCS-1310620); Army Research Office (ARO) (W911NF-11-1-0390, W911NF-13-1-0485). Portions of this work were presented at the SPIE, Current Developments in Lens Design and Optical Engineering in 2015, 957809-1 [9].
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Engineering (miscellaneous)
- Electrical and Electronic Engineering
