title: Optical performance of a diffraction-limited molded-glass biaspheric lens.
abstract: Optical performance results are reported for a molded-glass biaspheric lens. The 6-mm optical diam lens is intended for use in a laser-based optical disk application. The design with fabrication tolerances has an expected on-axis transmitted wave-front performance of 0.06-wave rms optical path difference (OPD) when tested at 0.6328 ,4m and a numerical aperture of 0.45. Transmitted wave-front aberrations were measured on actual molded lenses using a heterodyne interferometer. Typical performance was 0.05-0.08-wave rms- OPD. Experimental results involving mold rotation indicate that lens performance is primarily limited by a surface figure accuracy of one of the molds.
authors.affiliation: Corning Glass Works, Research & Development Laboratories, Corning, New York 14831, USA.
authors.forename: R O
authors.initials: RO
authors.lastname: Maschmeyer
authors.forename: R M
authors.initials: RM
authors.lastname: Hujar
authors.forename: L L
authors.initials: LL
authors.lastname: Carpenter
authors.forename: B W
authors.initials: BW
authors.lastname: Nicholson
authors.forename: E F
authors.initials: EF
authors.lastname: Vozenilek