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:
May. 02, 2017
Filed:
Jun. 26, 2014
Mitutoyo Corporation, Kanagawa, JP;
Shohei Udo, Miyazaki, JP;
MITUTOYO CORPORATION, Kanagawa, JP;
Abstract
An autofocus mechanism includes a light source emitting light through an objective lens at a work piece; a first detector detecting a portion of light reflected by the work piece and generating a first signal; a second detector detecting a portion of the reflected light and generating a second signal; a first amplifier amplifying the first signal and generating a first amplified signal; a second amplifier amplifying the second signal and generating a second amplified signal; an amplification rate definer defining an amplification rate of each of the first amplifier and the second amplifier based on the first amplified signal and the second amplified signal, respectively; and a calculator identifying a focal position of the objective lens based on the first amplified signal and the second amplified signal.