Apparatus for determining radiation beam alignment

Optics: measuring and testing – Lamp beam direction or pattern

Reexamination Certificate

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Details

C356S237600, C356S339000, C356S400000

Reexamination Certificate

active

06982785

ABSTRACT:
This invention provides a radiation directing device, including a screen having a mirrored surface interrupted by one or more pin holes that pass through the screen, the pin holes having an elliptical shape. The invention further provides an apparatus, including (a) a screen having a mirrored surface interrupted by one or more pin holes passing through the screen; and (b) a detector for detecting radiation reflected by the mirrored surface, wherein the detector determines a position of a radiation beam relative to the pin hole.

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Shapiro,Practical Flow Cytometry, Wiley-Liss, New York (1995).
International Society for Analytical Cytology: Letter of Acceptance and Registration Confirmation for Ger van den Engh.

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