Ultra-wide angle micrographic lens

Details Ultra-wide angle micrographic lens Ultra-wide angle micrographic lens

1985-08-26

1987-07-28

Corbin, John K.

G02B 964

Patent

active

046828630

ABSTRACT:
A wide-angle lens covering a half angle of 33 degrees and capable of being focussed over a range of 7.4X to 30X, with a satisfactory resolution and distortion at 100% diagonal of under 0.2% at all reductions substantially extends the usefullness of such a micrographic lens.

REFERENCES:
patent: 3997247 (1976-12-01), Glatzel et al.

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