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. 02, 2008
Filed:
May. 11, 2005
Othmar Zueger, Triesen, LI;
Othmar Zueger, Triesen, LI;
OC Oerlikon Balzers AG, Balzers, LI;
Abstract
The present invention relates to a method for combining or for splitting the beam paths of substantially nonpolarized light of at least three different wavelength intervals. The splitting or the combining of the beam path of light of those wavelength intervals located between the other wavelength intervals takes place when the beam paths of the light of the two other wavelength intervals are already or still combined. The present invention also relates to an illumination unit comprising a white light source and utilizing this method by means of interference filters for splitting the white light into red, blue and green light beams. The invention also relates to an illumination unit comprising a red, green and blue light source and utilizing these methods by means of interference filters for the combination of the beam paths of the light sources.