Andy Wood was employed in the optics industry for more than 35 years, as a designer of complex imaging systems, engineering manager and senior leader in technology development. His interest in diffractive optics started in the late 1980’s and led him to develop many optical systems which benefit from this technology. James Babington is an optical design and research specialist in the UK optics industry. He is currently a Lead Optical Specialist at Leonardo, UK. His research interests are in mathematical optics, computational imaging and applied optics. He regularly employs diffractive surfaces in his designs.