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Digital centring of axicon images.

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

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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: http://eprintspublications.npl.co.uk/id/eprint/81

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