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. 23, 2012
Filed:
Jul. 26, 2010
Maarten Niesten, Kirkland, WA (US);
Maarten Niesten, Kirkland, WA (US);
Microvision, Inc., Remond, WA (US);
Abstract
A variable reflectivity notch filter (), suitable for use with a laser image projection source () is provided. The variable reflectivity notch filter () defines a transmission curve () having a plurality of reflective peaks () each centered about a predetermined wavelength (), which can correspond to output wavelengths from laser sources. Reflective peaks () corresponding to wavelengths that change with temperature are configured with wider widths () and lesser reflectivities () than are other reflective peaks (). To provide enhanced color balance, lasers () corresponding to these reflective peaks () can be driven at higher output power. Variable reflectivity notch filters () are suitable for use in head-up displays as well as other applications.