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:
Oct. 07, 2008
Filed:
Dec. 20, 2005
Applicants:
Scott Wolpert, Westford, MA (US);
David Zahniser, Wellesley, MA (US);
Inventors:
Scott Wolpert, Westford, MA (US);
David Zahniser, Wellesley, MA (US);
Assignee:
Cytyc Corporation, Marlborough, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 33/48 (2006.01);
U.S. Cl.
CPC ...
Abstract
Techniques are provided for illuminating cytological specimens using light emitting diodes (LEDs). In one implementation, a pulse width modulated (PWM) LED source allows for color and intensity adjustment. A user may select the desired color and intensity of light, or the desired color and intensity may be electronically calculated. Using various colors of LEDs, such as red, blue, and green LEDs, various colors can be produced by modulating each LED duty cycle, for example, using a PWM controller.