Mona L Wallace

US Patent:

6340820, Jan 22, 2002

Filed:

Feb 4, 1999

Appl. No.:

09/245612

Inventors:

Katharine E. Youden - Mountain View CA
David F. Arnone - Mountain View CA
Mona Wallace - Saratoga CA
Robert Shine - San Jose CA

Assignee:

New Focus - San Jose CA

International Classification:

G01J 158

US Classification:

2504844, 2504831

Abstract:

Disclosed is an apparatus for detecting near-visible frequency light comprising a sensor which includes a near-visible to visible light conversion phosphor defining an active area and a covering having a thickness, the covering adapted to substantially protect the phosphor from degradation. The phosphor extends to within about a first distance of a flush portion of a first edge, the first distance corresponding approximately to the thickness of the covering. In an alternative embodiment, the active area comprises an aperture.