- optical crown
- nounoptical glass of low dispersion and low refractive index• Syn: ↑crown glass, ↑optical crown glass• Hypernyms: ↑optical glass
Useful english dictionary. 2012.
optical crown
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optical crown glass — noun optical glass of low dispersion and low refractive index • Syn: ↑optical crown, ↑crown glass • Hypernyms: ↑optical glass … Useful english dictionary
crown glass — noun 1. a glass blown into a globe which is later flattened and spun to form a disk • Hypernyms: ↑glass 2. optical glass of low dispersion and low refractive index • Syn: ↑optical crown, ↑optical crown glass • Hypernyms: ↑optical glass … Useful english dictionary
optical glass — noun clear homogeneous glass of known refractive index; used to make lenses • Hypernyms: ↑glass • Hyponyms: ↑optical crown, ↑crown glass, ↑optical crown glass, ↑optical flint, ↑flint glass … Useful english dictionary
crown lens — noun a lens made of optical crown glass • Hypernyms: ↑lens, ↑lense, ↑lens system * * * noun : the crown glass component of an achromatic lens * * * Optics. a lens made of crown glass, usually used as the converging lens component of an achromatic … Useful english dictionary
Crown (dentistry) — Intervention ICD 9 CM 23.41 MeSH … Wikipedia
Optical lens design — refers to the calculation of lens construction parameters (variables) that will meet a set of performance requirements and constraints, including cost and schedule limitations. Construction parameters include surface profile types (spherical,… … Wikipedia
Crown glass — is either of two kinds of glass: Crown glass (window) was a type of hand blown window glass. Crown glass (optics) is a type of optical glass used in lenses. This disambiguation page lists articles associated with the same title. If an … Wikipedia
optical glass — n flint or crown glass of well defined characteristics used esp. for making lenses * * * glass of high quality and controlled composition, used for lenses … Medical dictionary
crown glass — crown′ glass n. 1) opt cer an optical glass of low dispersion and generally low index of refraction 2) cer an old form of window glass formed by blowing a globe and whirling it into a disk • Etymology: 1700–10 … From formal English to slang
crown glass — n. 1. window glass made in flat, circular plates by blowing and whirling, with a small knot in the center left by the blower s rod 2. a very clear optical glass with a low index of refraction … English World dictionary
