Renishaw (Hoffman Estates, Ill.) debuted ATOM, a noncontact optical linear and rotary incremental encoder system that combines miniaturization with dirt immunity, signal stability and reliability. With a readhead as small as 6.7 by 12.7 by 20.5 mm (0.26 by 0.5 by 0.8 inch), ATOM is said by Renishaw to be the world’s first miniature encoder to use filtering optics with auto gain control (AGC) and auto offset control (AOC) for enhanced signal stability and dirt immunity. Applications include laser scanning, precision microstages and space-critical motion control (cutting tables, machining fixtures), inspection and metrology. ATOM features a low Sub-Divisional Error (SDE), low jitter, analog speeds to 20 m/sec and digital resolutions to 1 nm when used with Renishaw interpolation electronics. The readhead includes a set-up LED to allow quick and easy installation, and an auto-calibration routine to enable faster optimization. Scale options include linear and rotary (angle) scales in stainless steel and glass.
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