Cylindrical lens and a manufacturing method for the same

Details Cylindrical lens and a manufacturing method for the same Cylindrical lens and a manufacturing method for the same

1991-11-04

1993-08-10

Arnold, Bruce Y.

Optical: systems and elements

Lens

With multipart element

359710, G02B 308

Patent

active

052354679

ABSTRACT:
A lens in a shape of cylinder or head-cut-off cone made of transparent thin film materials with a fine prism-shaped fresnel lens surface formed thereon. The cylindrical lens is manufactured by forming a fine prism-shaped linear fresnel lens surface on a thin transparent film, shaping the film into a cylinder or a frustum of a cone, and connecting both ends of the film so that the fresnel center line forms a horizontal ring.

REFERENCES:
patent: 2097850 (1937-11-01), Wallace
patent: 4385808 (1983-05-01), Vanderwerf
patent: 4456344 (1984-06-01), Bordingnon
patent: 4545366 (1985-10-01), O'Neill
patent: 4657355 (1987-04-01), Negishi
patent: 4906070 (1990-03-01), Cobb
patent: 5016227 (1991-05-01), Turner, Jr.

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