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. 31, 2004
Filed:
Oct. 10, 2002
Yoshihiro Matsumoto, Toda, JP;
Inami & Co., Ltd., Tokyo, JP;
Abstract
A computer controlled perimetry system, which is easily operated even by an unskilled operator, for accurately measuring a visual field, and with which many patients can be effectively examined, has a dome having a hemispherical inner surface; a projector projecting a light spot onto the inner surface of the dome; an arm for horizontally moving the projector so as to trace a semicircle along the surface of a virtual hemisphere opposite to the dome; a first motor for driving the arm; a second motor for changing the projecting direction of the projector; a liquid crystal display for displaying the light spot projected onto the inner surface of the dome; a monitor display for observing a patient; and a computer storing a program for controlling the rotation of the first and second motors. Thus, the light spot projected by the projector can be swept to any point on the inner surface of the dome.