Optical Distance Measuring Sensors (Sharp)

Distance measurement with optical distance sensors

Distance sensors based on optical triangulation. The components work with one or more infrared LEDs and a receiver chip, the so-called PSD. This is a 4-layer semiconductor component that generates different currents depending on the angle of incidence of the infrared beam reflected by the object. These currents are then related to a reference by the downstream electronics and output at the output pin as a degressive analog voltage. Thus, a stepless distance measurement is possible. The color of the object does not play a role. The surface condition is also uncritical to a certain degree.

Sensor type	Output	Detected distance	Features	Sharp Partnumber
PSD	1-bit digital output according to distance measuring	13 cm	1-bit digital output	GP2Y0D413K0F
	Analog voltage output according to distance measuring	24 cm	1-bit digital output	GP2Y0D21YK0F
		80 cm	1-bit digital output	GP2Y0D02YK0F
		1.5 to 15 cm	Analog output	GP2Y0AF15 series
		2 to 15 cm	Analog output	GP2Y0A51SK0F
		4 to 30 cm	Analog output	GP2Y0A41SK0F / GP2Y0AF30 series
		10 to 80 cm	Analog output	GP2Y0A21YK0F
		20 to 150 cm	Analog output	GP2Y0A02YK0F

Manufacturer SHARP: https://www.dema.net/en/manufacturer/sharp-optoelectronic