The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 2004
Filed:
Feb. 27, 2001
John Gordon Rushbrooke, Cambridge, GB;
Claire Elizabeth Hooper, Cambridge, GB;
Packard Instrument Company, Inc., Meriden, CT (US);
Abstract
Apparatus for detecting light emitted by an assay sample is provided, in which light emitted by the sample is collected for transmission to a photosensitive detector such as a charge coupled device (CCD) ( ) by an optical fiber 78 bundle. The cross-sectional area of the optical fiber bundle corresponds to the area of the sample, the end of which is located close to the sample for detecting any light emitted therefrom. Selected fibers ( ) of those making up the bundle may be separated from the remainder and extend to a source of excitation radiation ( ) to convey excitation radiation to the sample. The remaining fibers ( ) serve to collect emitted light and provide a light path to the photosensitive detector ( ). A blocking filter and an interference filter are placed between the fiber bundle and the detector. The blocking filter may be between the bundle and the interference filter or between the latter and the detector. Two blocking filters may be provided one ahead of and the other downstream from the interference filter. The attenuation characteristic of the two filters may be different or the same.