DISTANCE SENSOR OF PASTE DISPENSER

摘要

A distant sensor of a paste dispenser is provided to measure a distance between a substrate and a nozzle without distortion via an entire process for forming a paste pattern. A distant sensor(100) of a paste dispenser comprises a lighting emitting unit(110) and a light receiving unit(120). The lighting emitting unit forms two measurement points(116,117) on a substrate. The measurement points are positioned in front and rear sides of an application location based on a horizontal movement direction of the application location. The light emitting unit projects light so as to be positioned in both sides as leaving a space for the application location. The light receiving unit receives the light reflected from the measurement points, and converts the light into an electric signal. As changing the application location of a nozzle, paste is applied onto the substrate.