Position sensing detectors to replace quadrant photodiodes

15th July 2014
Posted By : Nat Bowers
Position sensing detectors to replace quadrant photodiodes

While quadrant photodiodes have been dominating the non-contact position detection market for years, engineers and researchers are now looking to Position Sensing Detectors (PSDs) as an alternative. PSDs stand out from the competition when large area measurements with precise readings are required.

PSDs function according to the the Lateral Effect Photodiode principle - therefore they display excellent resolution and speed in position detection applications as sensitive as vibration and high accuracy measurements.

Quadrant photodiodes require the laser beam to be in all segments of the detector and a high quality beam shape to produce accurate results. A PSD, however, is a single piece of silicon which produces accurate results independent of beam shape and location. Standard PSDs feature active areas of 45x45mm2.

PSDs have commonly been used in high demand machine vision and inspection systems, such as automotive and aerospace, large civil engineering projects such as bridge and tower construction, and specialist projects such as remotely piloted vehicles, robotic guidance and simulation projects.


You must be logged in to comment

Write a comment

No comments




Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Startups Magazine Launch Party: Financing a Startup
24th July 2018
United Kingdom WeWork Waterhouse Square, London
European Microwave Week 2018
23rd September 2018
Spain Ifema Feria De Madrid
IoT Solutions World Congress 2018
16th October 2018
Spain Barcelona
Engineering Design Show 2018
17th October 2018
United Kingdom Ricoh Arena, Coventry
Maintec 2018
6th November 2018
United Kingdom NEC, Birmingham