Panasonic HG-C CMOS type micro laser distance sensor not only indicates measured values in mm but also produces analog voltage outputs. Various calculations and storage (logging) can be performed when output is taken into a PLC + analog unit. In general, more accurate and stable measurements can be obtained by increasing the optical path length between the light-receiving part and the light receiving element (CMOS), but this also increases the sensor depth and the sensor body gets bigger. The HG-C series sensors incorporating a new optical system with a built-in mirror provides smaller sensor depth as well as higher measurement accuracy equivalent to displacement sensors. A light-weight but strong die-cast aluminum casing has been adopted. A compact, solid body casing reduces the impact of strain and heat on the measurement accuracy.