title: Partial dispersion ratios of some new borate and phosphate glasses.
abstract: The partial dispersion ratios of phosphate and borate glasses are defined and found significantly different from those of silicate glasses; thus, they are useful for secondary spectrum correction. Refractive index measurement accuracy necessary to ensure significant partial dispersion ratios is analyzed. Measurement techniques and corrections are described.
authors.affiliation: Bausch & Lomb, Inc., Rochester, NewYork 14602, USA.
authors.forename: G F
authors.initials: GF
authors.lastname: Brewster
authors.forename: J R
authors.initials: JR
authors.lastname: Hensler
authors.forename: J L
authors.initials: JL
authors.lastname: Rood
authors.forename: R A
authors.initials: RA
authors.lastname: Weidel