Objective replacing apparatus having objective position, displac

Details Objective replacing apparatus having objective position, displac Objective replacing apparatus having objective position, displac

1994-06-22

1995-03-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2502013, 359384, G02B 2100, G02B 2106

Patent

active

053960637

ABSTRACT:
An apparatus for detecting a rotation operation of revolver is provided with a rotation direction detecting device for detecting a rotation direction of revolver by detecting a displacement of a position indication portion indicating a position of objective mount portion. In case that the rotation of revolver is carried out either in a manual manner or in an automatic manner, an address of mount hole in revolver which is to be next located at the predetermined position may be determined at start of rotation operation of revolver.

REFERENCES:
patent: 4555620 (1985-11-01), Bridson et al.
patent: 4725720 (1988-02-01), Sawada et al.
patent: 5239177 (1993-08-01), Canniff

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