Method for testing the kinematic display chain in a watch or watch head downstream of its oscillator
AssigneeOmega SA
InventorsAlexandre HUNDZINGER, Anthony HAEBERLI, Justin ACHARD
Life of this patent
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Abstract
A method for testing the display of a watch head, in which the watch head is kept running continuously for 24 hours, an initial optical image of the hands is taken at an initial time with reference to fixed points; at least 24 hours later, at a final time measured on a reference clock, a final optical image of the hands is taken with reference to the fixed points, the positions of the hands at the initial and final times are determined by visual recognition means, the difference between the reference position on the reference clock and the actual position of the hands is calculated, and the value of the measured state deviation is displayed.
Claims12
A method for testing the kinematic display chain of a watch or watch head downstream of its oscillator, simultaneously with tests on an array of testing stations, in which a simultaneous measurement of the running of a watch or watch head is used by taking the optical state of the hands and continuous or near-continuous acoustic measurement on an array of testing stations, and said watch or watch head is kept running continuously for a measurement time TM of at least 24 hours, either by providing said watch or watch head with an energy source capable of keeping it running for at least said measurement time TM or by equipping said testing station with a winding and/or shaking device with which said watch or watch head is wound or shaken to reset it for at least said measurement time TM.
Dependencies are inferred from the claim text.