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:
May. 07, 2019
Filed:
Feb. 09, 2018
David Wayne Holdsworth, London, CA;
David Wayne Holdsworth, London, CA;
Other;
Abstract
Laboratory optical imaging systems for fluorescence and bioluminescence use a sensitive charge-coupled device (CCD) camera to produce quantitative measurements of very low light intensity, detecting signals from specimens labeled with optical fluorophores or luminescent emitters. Commercially available systems typically provide quantitative measurements of light output, in units of radiance (photons scmSR) or intensity (photons scm). We describe a quality assurance system for low-light imagers, based on an LED-illuminated thin-film transistor (TFT) liquid crystal display module. The light intensity is controlled by pulse-width modulation of the backlight, producing intensity values ranging from 1×10photons scmto 4×10photons scm. The lowest light intensity values are produced by very short backlight pulses (i.e. approximately 10 μs), repeated every 300 s. This light source provides a stable, traceable intensity standard that can be used for routine quality assurance of optical imaging systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile