Optical: systems and elements – Lens – With multipart element
Patent
1993-07-06
1995-02-14
Sikes, William L.
Optical: systems and elements
Lens
With multipart element
359900, 264 25, 425808, G02B 308, B29D 1100
Patent
active
053900502
ABSTRACT:
An eccentric Fresnel lens is formed from a concentric Fresnel lens sheet or Fresnel lens sheet mold. The concentric Fresnel lens sheet or mold is cut to produce an eccentric Fresnel lens having a center offset from the optical axis of the concentric Fresnel lens.
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Kurematsu Katsumi
Minoura Nobuo
Mitsutake Hideaki
Yanagi Haruyuki
Canon Kabushiki Kaisha
Parsons David R.
Sikes William L.
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