Abstract

Lenses for laser scanners are currently receiving much attention. Laser scanning lenses basically involve the same design problems as eyepieces. The control of astigmatism, Petzval curvature, and distortion are the most challenging problems. F/theta correction requires just the right amount of third-order distortion. As the field angles increase some control of the higher-order distortion and astigmatism is necessary to maintain the F/theta condition. The telecentric condition of the scanning beam places some constraints on the designs, particularly when the relative aperture is large.

© 1986 Optical Society of America