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:
Mar. 14, 2006
Filed:
May. 17, 2004
Fan-gang Tseng, Hsinchu, TW;
Kuo-yung Hung, Hsinchu, TW;
Heng-tsang HU, Kaoshiung, TW;
National Tsing Hua University, Hsinchu, TW;
Abstract
At least two Fresnel lenses are formed on a transparent substrate, and a set of parallel plates are established in an acute included angle (from 19° to 90°) with the transparent substrate by an inclined exposure process employing a thick film photoresist. The parallel plates are separately placed over the Fresnel lenses. Metal layers are separately deposited on the outside surfaces of the parallel plates far from the acute included angle. A transparent polymeric material is overlaid on the surface of the transparent substrate till the parallel plates are immersed. An objective lens, placed over a photo detector, is formed on the surface of the transparent polymeric material. A laser diode is placed at a location on the surface of the substrate opposite to one of the Fresnel lenses, and the photo detector is placed at a location on the surface of that opposite to another of the Fresnel lenses.