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:
Nov. 26, 1996
Filed:
May. 10, 1995
Robert C Kain, San Jose, CA (US);
Michael F Miller, Mountain View, CA (US);
Lars Majlof, Saratoga, CA (US);
Molecular Dynamics, Sunnyvale, CA (US);
Abstract
An LED point imaging scanner for stimulating and for reading fluorescent and reflective signal radiation from a target sample is disclosed. The LED light source is mounted on a scan head and is focused into the pinhole aperture of a spatial filter, then collimated and focused to a spot on the sample. The spatial filter in the illumination path, or an optical fiber serving the equivalent function, effectively restricts the incoherent LED light and creates a point light source. Signal radiation from the sample is collected through the scan head and the returning light beam is collimated and focused onto the receiving section of a detection means. A spatial filter in the path of the returning beam may also be utilized. The detection means is either a small detector which is mounted directly on the scan head or an end of an optical fiber which transmits the point image to a remotely-positioned stationary detector. The scan head is moved along one or two axes relative to the sample for scanning of a target area of the sample.