A cylindrical optical lens is typically used to focus, condense or expand incoming light. A cylindrical optical lens has one cylindrical surface, causing light to be focussed in a single dimension or ...
A plano-convex cylindrical lens is used to condense light in one axis. A positive cylindrical lens is able to create a line image from a point of light, to change the aspect ratio of an image or to ...
LONDON. Physical Society, December 8.—Prof. G. Carey Foster, F.R.S., Vice-President, in the chair.—Prof. S. P. Thompson read a paper on obliquely crossed cylindrical lenses. Any two cylindrical lenses ...
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