MEASURING TOUCH SENSOR BASED ON DIFFRACTION GRIDS Russian patent published in 2006 - IPC G01B11/30 

FIELD: engineering of touch sensors.

SUBSTANCE: device has measuring diffraction grid, probe, two guides, two reading heads, substrate, engine, a group of magnets. First reading head is rigidly connected to body of indicator. Second reading head contains receiver of radiation, collimator, indicator diffraction grid, a matrix of photo-receivers. Group of bearings provides for movement of measuring diffraction grid along movement direction. Measuring diffraction grid and substrate are utilized as guides. One indicator diffraction grid is held in carriage. Carriage is connected to probe, which touches measured surface and moves relatively to same together with measuring diffraction grid. Measuring diffraction grid and substrate are connected to engine, and reading heads are connected to adders.

EFFECT: increased precision of touch coordinate detection at measured surface.

5 dwg