Multilens optical assembly for a diagnostic device
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United States of America Patent
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Feb 21, 2006
Grant Date -
Apr 21, 2005
app pub date -
Jun 9, 2004
filing date -
Oct 16, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A diagnostics apparatus for detecting fluorescence events related to the presence of an analyte in a sample is disclosed. The apparatus includes a housing, a source of excitation light and a photodetector, and a unitary multi-surface optical module. The optical module is integrally formed and composed of an upstream portion having a focusing optical surface for directing excitation light from the light source to a focal region within an analyte-detection zone in the apparatus, and a downstream portion having a second focusing powered optical surface and at least one reflecting surface for directing fluorescence-emission light produced by fluorescence events within the detection zone, in a direction substantially normal to the path of the excitation light onto the photodetector. The optical module is adaptable to a variety of assay formats, including multiple-sample, sample-array, and disposable-cartridge formats.
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