Low-wavefront aberration and high-temperature stability molded micro Fresnel lens
- 1 November 1989
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 1 (11) , 384-385
- https://doi.org/10.1109/68.43387
Abstract
A high-diffraction efficiency (>50%), small lens diameter (0.5 mm phi ), short focal length (1 mm), and thin (0.25 mm) molded micro Fresnel lens suitable for compact optical devices is discussed. The device is fabricated by means of a photopolymerization process using a UV-curable resin. By adopting glass as the substrate, low-wavefront aberration (<0.04 lambda , RMS value) and diffraction-limited focusing characteristics have been obtained at ambient temperatures between 20 degrees C and 100 degrees C. These characteristics are superior to those in a conventional aspherical plastic lens.Keywords
This publication has 1 reference indexed in Scilit:
- Spherical Grating Objective Lenses for Optical Disk Pick-upsJapanese Journal of Applied Physics, 1987