Hunt, R A (1994) Digital centring of axicon images. NPL Report. MOM 119

Text mom119.pdf Download (5MB)

Abstract

The NPL designed monocenmc axicon camera produces diffraction limited concentric ring patterns from point source targets. Using a very accurate plate measuring machine and a laser scanning device, 3D co-ordinates were obtained in a photogrammemc test experiment giving residuals of < 2000 nm in a volume of approximately one cubic metre corresponding to a photographic plate measurement uncertainty of < 100 nm, when compared with a Moore 5Z measuring machine. The current work is concerned with replacing the laser scanning device with computer image processing taking its input from a microscope image of the plate viewed with a commercial CCD camera.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	MOM 119
Subjects:	Optical Radiation and Photonics
Last Modified:	02 Feb 2018 13:19
URI:	https://eprintspublications.npl.co.uk/id/eprint/81