oblate ellipsoid


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Related to oblate ellipsoid: Prolate ellipsoid, spheroid

oblate ellipsoid

[′ä‚blāt i′lip‚sȯid]
(mathematics)
References in periodicals archive ?
Aspheric designs for myopes utilise convex oblate ellipsoid or convex polynomial surfaces in order to produce thinner and flatter point focal lenses.
It is generally accepted that convex oblate ellipsoid surfaces are used to reduce edge thickness of negatively powered lenses.
Technically speaking, they are, I suppose, oblate ellipsoids, but if you are really interested in packing them in an optimal space-saving manner, you would need a degree of familiarity with Kepler's sphere-packing theorem.