Field curvature control

Details Field curvature control Field curvature control

G - Physics

02

B

88/96

G02B 5/08 (2006.01)

Patent

CA 1162767

ABSTRACT An optical element for providing control of field curvature. The element consists of a lens having a first and second surface. The second surface is coated with reflective material. The radiation received by the lens is refracted at the first surface, reflected back from the second surface, and then refracted once again by the first surface. The first and second surfaces have a shape for providing control of field curvature.

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