Optical: systems and elements – Diffraction – From zone plate
Patent
1995-06-05
1997-05-13
Henry, Jon W.
Optical: systems and elements
Diffraction
From zone plate
359566, 359570, 264 132, 264 17, 264 21, G02B 518, G02B 2744, B29D 1100
Patent
active
056298005
ABSTRACT:
Diffractive lenses having gradial zones (62, 70, 78, 90, 98, 106, 114) are formed by separately, sequentially spin casting and polymerizing successive radial zones of the lens to produce optical phase differences of 2.pi. between adjacent gradial zones. Diffractive lenses may be molded in plano-plano(60), plano-concave (68) and plano-convex (76) geometries and also may be combined with conventional plano-plano (84), convex-convex (92), plano-concave (100) and plano-convex (108) refractive lenses.
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Bailey, Sr. Clyde E.
Eastman Kodak Company
Henry Jon W.
Treash, Jr. Leonard W.
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