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:
Aug. 01, 2017
Filed:
Apr. 05, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Noboru Suzuki, Utsunomiya, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A lens apparatus includes a magnification variator driven for zooming, a drive unit that drives the variator, a detector that detects the position of the variator, a deriving unit that derives a second drive signal to drive the drive unit based on: an information representing relationship between position of the variator and size of field of view; a position detected by the detector; and first drive signal, wherein field-of-view change rate obtained when the drive unit is driven based on the second drive signal is smaller than field-of-view change rate obtained when the drive unit is driven based on the first drive signal, and a corrector that outputs position data in which variation of speed of the variator is smaller than that of position data based on the second drive command, when the variator is driven based on the second drive command derived by the deriving unit.