1. Advanced Imaging, URL
http://directory.advancedimagingpro.com
. Accessed 12th July 2009
2. Answers, URL
http://www.answers.com/topic/telecentric-lens
. Accessed 12th July 2009
3. Australia, URL
http://azooptics.com
. Accessed 12th July 2009
4. AZoOptics, Mona Vale, Accessed 12th July 2009
5. Coherent, URL
http://www.coherent.com/Lasers/
. Accessed 27th October 2010