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. 24, 2011
Filed:
Mar. 27, 2006
Marcello Balistreri, Rosmalen, NL;
Derk Jan Wilfred Klunder, Geldrop, NL;
Maarten Van Herpen, Heesch, NL;
Marcello Balistreri, Rosmalen, NL;
Derk Jan Wilfred Klunder, Geldrop, NL;
Maarten Van Herpen, Heesch, NL;
Koninklijke Philps Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to an optical system that particularly allows an improved detection of signal light propagating from a light source () through a flat glass substrate (). SC-modes of this signal light that would normally be totally internally reflected at the backside () of the substrate () are coupled out by a first diffractive optical element DOE (). To map all signal light leaving the substrate () onto a single target location (), a focusing lens () and a second DOE () are disposed in the optical path behind the substrate (). The DOEs () may for example be a ID sinusoidal grating or a 2D blaze grating. The optical system may particularly be applied in an investigation apparatus for detecting multiple spots of a fluorescent sample material.