Write and read objective lens for high density storage

Details Write and read objective lens for high density storage Write and read objective lens for high density storage

1979-04-02

1981-03-17

Corbin, John K.

350469, G02B 934

Patent

active

042563747

ABSTRACT:
A write and read objective lens for encoding and recovery of information upon a storage member comprising three single lenses and one achromatic doublet for which the working distance is large, flatness of field and resolving power are high and utilizable with a plurality of wavelengths of light.

REFERENCES:
patent: 3592530 (1971-07-01), Klein

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