Optical: systems and elements – Compound lens system – Microscope
Patent
1997-03-06
1999-11-30
Nguyen, Thong
Optical: systems and elements
Compound lens system
Microscope
359368, 359382, G02B 2100
Patent
active
059952822
ABSTRACT:
In an operation microscope, when an observation velocity of an observation field of a main microscope body is set to a desired velocity and then an observation magnification of the observation field of the main microscope body is changed and the focal point thereof is moved, each encoder detects changing of the observation magnification and moving of the focal point and then outputs a detection result to an arithmetic-logic unit. The arithmetic-logic unit calculates the drive condition that a moving velocity of the observation field of the main microscope body after the observation magnification is changed and the focal point is moved is a desired velocity, based on the detection result of each encoder. By using a Y-axis actuator, an X-axis actuator, a vertical direction moving unit and a horizontal direction moving unit, the main microscope body is moved under the control of a CPU in accordance with the drive condition obtained by the arithmetic-logic unit. Thus, the moving velocity of the observation field is automatically kept constant.
REFERENCES:
patent: 3566872 (1971-03-01), Draeger
patent: 3887267 (1975-06-01), Heller
patent: 4912388 (1990-03-01), Tanaka et al.
patent: 5748366 (1998-05-01), Yasunaga et al.
patent: 5835266 (1998-11-01), Kitajima
Akiyama Hiroshi
Sugino Yuichi
Kabushiki Kaisha Topcon
Nguyen Thong
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