Laser sensors, LDS 70 series
The LDS series of laser distance sensors are available in ranges from 5 to 200mm with resolutions varying between 0.5 and 40 um. The spot diameter is typically 100 to 200 um and depends on the distance from the laser sensor to the target. The available outs are 4-20mA, 1-5 Vdc or RS232.
The LDS 70 series of laser sensors are good for black, rubber and dark surfaces, as well as surfaces that vary in colour, as well as applications at high temperature. The LDS 70 / 250 F suits applications where there is a lot of vibration, or the sensor could be subject to shock or magnetic fields.