Apparatus for scanning a surface with electromagnetic radiation

Details Apparatus for scanning a surface with electromagnetic radiation Apparatus for scanning a surface with electromagnetic radiation

H - Electricity

04

N

H04N 1/10 (2006.01)

Patent

CA 2566309

Disclosed is an apparatus for scanning a surface with electromagnetic radiation. The apparatus comprises a base plate for supporting a medium said medium having a scanning surface to be scanned, an optical head unit adapted to scan the scanning surface with electromagnetic radiation propagating along an optical axis, a fluid film generation unit connected to the optical head unit and adapted to generate a fluid film between the scanning surface and a gliding surface of the fluid film generation unit for maintaining a predetermined distance between the gliding surface and the scanning surface during scanning operation of the optical head unit across the scanning surface, and control means for controlling the position of the fluid film relative to the optical axis.

L'invention concerne un appareil qui permet de balayer une surface avec un rayonnement électromagnétique. L'appareil de l'invention comprend: une plaque de base qui soutient un support, ledit support possédant une surface de balayage destinée à être balayée; une unité tête optique apte à balayer la surface de balayage avec un rayonnement électromagnétique se propageant le long d'un axe optique; une unité de production de film de fluide reliée à l'unité tête optique et apte à produire, entre la surface de balayage et une surface de glissement de l'unité de production de film de fluide, un film de fluide permettant de maintenir une distance prédéterminée entre la surface de glissement et la surface de balayage au cours d'une opération de balayage de l'unité tête optique sur la surface de balayage; et des moyens de réglage permettant de régler la position du film de fluide par rapport à l'axe optique.

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