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. 20, 2015
Filed:
May. 15, 2014
Harmonic Drive Systems Inc., Tokyo, JP;
Satoshi Kiyono, Miyagi, JP;
HARMONIC DRIVE SYSTEMS INC., Tokyo, JP;
Other;
Abstract
A gap measurement devicecomprises a light sourcefor projecting light on a gapto be measured, a lens optical systemfor focusing on an imaging surfacea gap imageA from light transmitted through the gap, and a light-receiving elementfor receiving light of the gap imageA formed on the imaging surfaceof the lens optical system. A holed maskprovided with a light-transmitting holehaving a prescribed aperture size is arranged on the imaging surface, and the light-receiving elementreceives the light of the gap imageA via the hole. A gap size at a point to be measured in an extended gapcan be measured by forming an image of the gap with the lens optical systemand placing the holeof the holed maskon the point to be measured on the imaging surfaceof the lens optical system