Lens system for optical recording type disks

Details Lens system for optical recording type disks Lens system for optical recording type disks

1983-07-21

1986-02-18

Corbin, John K.

G02B 1308

Patent

active

045710341

ABSTRACT:
A compact and light-weight lens system for optical recording type disks comprising only one lens element and arranged to have favorably corrected aberrations and a long working distance by forming both surfaces of the lens element as aspherical surfaces.

REFERENCES:
patent: 4027952 (1977-06-01), Hugues
patent: 4449792 (1984-05-01), Arai et al.

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