![]() ![]() ![]() The electromotively adjustable focusing system of claim 4, wherein the manual control means further includes a switch, the switch being opened or closed in response to the axial movement of the knob to provide respectively to the motor a fine or a coarse adjustment signal.Ħ. Means for applying the selectively generated electrical signals to the electromotive moving means, whereby the microscope is, in response, respectively coarsely or finely focussed, wherein the manual control means is a knob capable of simultaneous or separate rotation and axial movement, the rotation of the knob controlling the direction of movement of the object stage and the axial movement of the knob selectively causing course or fine focusing.ĥ. Means for manually controlling the output of the electrical signal generating means and ![]() ![]() Means for generating selective electrical signals, such signals causing either coarse or fine adjustment of the microscope Means for electromotively moving the object stage, and thereby, focusing the microscope An electromotively adjustable focusing system, for a microscope comprising:Īn adjustable microscope objective stage The electromotively adjustable focusing system of claim 1, wherein the electromotive moving means is an electric motor.Ĥ. The electromotively adjustable focusing system of claim 1, wherein the generator comprises a tacho-generator.ģ. Means for applying the selectively generated electrical signals to the electromotive moving means, whereby the microscope is, in response, respectively coarsely or finely focussed.Ģ. Means for manually controlling the output of the generator, said generator producing electrical signals proportional to the degree of movement of said manual control means and Means for electromotively moving the object stage and, thereby, focusing the microscope Ī generator for generating selective electrical signals, such signals causing either coarse or fine adjustment of the microscope An electromotively adjustable focusing system for a microscope comprising: Germany: Hesse, Wetzlar Physical Description Ref: Ernst Leitz, Microscopes and Accessory Apparatus (Wetzlar, 1907), pp. This has a mechanical stage marked “BAUSCH & LOMB OPTICAL CO. Randolph of Upperville, Va., in around 1919, and used it in medical school. Leitz Wetzlar / No 125871.” The serial number indicates a date around 1909. This example of Leitz’s model IIa is a compound monocular with coarse and fine focus, triple nosepiece, square stage, inclination joint, sub-stage condenser and iris diaphragm, sub-stage mirror, and wooden box. ![]()
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