December 14, 2011
The new TM-3000 2-D optical micrometer from Keyence is designed to combine the functionality of a laser scan micrometer, machine vision system, and optical comparator into a single device for 100 percent automated high-speed, inline, or offline measurement and inspection applications.
It is available in three sensor head sizes. Two transmitter-receiver pairs can be used simultaneously for flexibility.
The micrometer employs a dual, telecentric lens to create uniform collimated light with a green LED. A 2-D CMOS array then detects the light-to-dark transitions on the 2-D array to measure the dimensions. Subpixel processing occurs only in the areas or points designated for measurement.
Because the system works in two dimensions, it can measure up to 16 points within the measurement area. A combination of 15 measurement modes and eight auxiliary modes can support measurements including hole diameter, center pitch, intersection point, radius, width, angle, perpendicular distance, and area. The position correction function automatically orients the test part before measurement.