06278522 is referenced by 461 patents and cites 23 patents.

An optical filter used in applications involving spectroscopic measurements is fabricated by depositing layers of optical coatings onto a substrate. The layers are deposited so as to have a substantially constant thickness in a first direction along the surface of the substrate, and a gradually increasing thickness along a direction perpendicular to the first direction. The structure of the optical filter allows for large scale production of the filter so that costs in producing the filter are greatly reduced. The filter may be used in a variety of applications including, but not limited to chemical analysis, blood glucose monitoring, and the like.

Title
Optical filter for spectroscopic measurement and method of producing the optical filter
Application Number
9/318721
Publication Number
6278522 (B1)
Application Date
May 26, 1999
Publication Date
August 21, 2001
Inventor
Mohamed Kheir Diab
Mission Viejo
CA, US
James M Lepper Jr
Trabuco Canyon
CA, US
Agent
Knobbe Martens Olson & Bear
US
Assignee
Masimo Laboratories
CA, US
IPC
G01N 21/25
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