Spherical gradient-index lens designs for video-disk pickup lens

Details Spherical gradient-index lens designs for video-disk pickup lens Spherical gradient-index lens designs for video-disk pickup lens

1982-01-11

1984-07-03

Corbin, John K.

G02B 300

Patent

active

044575904

ABSTRACT:
Spherical singlet lenses of gradient index design, suitable for use as video disk lenses or the like, are provided wherein all orders of spherical abberation are sufficiently reduced to provide diffraction-limited axial imaging. This imaging is achieved without resorting to sixth-order refractive index profile control; only the profile parameters N.sub.00, N.sub.10 and N.sub.20 defining the radial index profile N(r) in the profile function:

REFERENCES:
patent: 3729253 (1973-04-01), Moore et al.

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