Automatic focusing device in a stereoscopic microscope

Details Automatic focusing device in a stereoscopic microscope Automatic focusing device in a stereoscopic microscope

1982-01-29

1984-05-08

Sikes, William L.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

350515, G02B 711

Patent

active

044477171

ABSTRACT:
An automatic focusing device in a stereoscopic microscope having a pair of left and right stereoscopic observation optical systems disposed rearwardly of a common objective lens includes automatic focusing means for converting an amount of focus deviation into an electrical signal and automatically controlling the stereoscopic microscope to its in-focus position on the basis of the electrical signal, and selector means for selecting the operation and non-operation of the automatic focusing means.

REFERENCES:
patent: 3721827 (1973-03-01), Reinheimer
patent: 3994558 (1976-11-01), Schulz et al.
patent: 4009930 (1977-03-01), Abe et al.
patent: 4293187 (1981-10-01), Ishibai et al.
patent: 4363961 (1982-12-01), Okada et al.

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