Interchangeable low-backscatter aperture structure

Details Interchangeable low-backscatter aperture structure Interchangeable low-backscatter aperture structure

2005-05-24

2005-05-24

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Glare or unwanted light reduction

Directional or angular discrimination

C359S227000, C359S529000, C359S894000

Reexamination Certificate

active

06896377

ABSTRACT:
An interchangeable low-backscatter aperture structure includes but is not limited to an aperture insert that is releasably engaged in a base. The aperture insert includes an aperture that may be of any shape. For example, the aperture may comprise a slit or it may be circular. The aperture insert may be held in the base by any securing mechanism capable of releasably securing the insert to the base. In one embodiment the securing mechanism includes a plurality of pressure clips.

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Ryder, A., “Light Measurement Handbook” International Light 1998, pp. 1-64.

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