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:
Dec. 10, 2013
Filed:
Jan. 17, 2012
Shigeru Takimoto, Shizuoka-Ken, JP;
Satoshi Shimada, Shizuoka-Ken, JP;
Masayoshi Oouchi, Shizuoka-Ken, JP;
Shigeru Takimoto, Shizuoka-Ken, JP;
Satoshi Shimada, Shizuoka-Ken, JP;
Masayoshi Oouchi, Shizuoka-Ken, JP;
Kowa Company, Ltd., Aichi-Ken, JP;
Abstract
In a perimeter having means for measuring a visual field of an eye to be examined, means for monitoring fixation state and means for lighting the eye to be examined with a brightness necessary for monitoring the fixation state of the eye to be examined and means for correcting visibility, means for correcting visibility is provided so as to be freely moved between a set position corresponding to a measurement position of the eye to be examined and a stored position retracted to an outer periphery of a projection member. Such a perimeter further has means for detecting whether means for correcting visibility is at the set position or the stored position and an illustration controller for changing brightness of the illumination onto the eye to be examined through the means for lighting according to the detected position of means for correcting visibility.