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:
Jan. 05, 2010
Filed:
May. 28, 2008
Miyako Mizutani, Kawasaki, JP;
Miyako Mizutani, Kawasaki, JP;
Mitutoyo Corporation, Kawasaki-shi, JP;
Abstract
In a photoelectric encoder including a scale () for making a relative move and an image forming optical system (), adapted to detect relative displacement of the scale, a transparent protective material () having a thickness t equal to or greater than the depth of focus (DOF) of the image forming optical system is disposed on the lattice () side surface of the scale. The transparent protective material can be transparent tapebonded to the lattice side surface of the scale or a transparent protective materialapplied to the lattice side surface of the scale. The surface of the transparent protective material can have hydrophilicity or lipophilicity.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile