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:
Jun. 23, 2009
Filed:
Oct. 26, 2004
Antti Valjakka, FIN-71570 Syvänniemi, FI;
Arto Urtti, Kuopio, FI;
Janne Ahonen, Kuopio, FI;
Other;
Abstract
The present invention relates to a visual stimulator, which comprises a light stimulation source, a regulable attenuator of light, mirrors for reflecting light and light detectors. The visual stimulator in accordance with the invention comprises a mirror chamber and a mirror tube constructed of mirrors in which the reflecting points of the mirrors form various angles with respect to each other, and which have been connected to each other such that light beams disperse from the mirror tube to the mirror chamber without hindrance regardless of the location of the object to be examined or a part of it in the mirror chamber and though the location of the object or a part of it would vary in certain limits in the mirror chamber, and that to one end of the mirror tube, viewed away from the mirror chamber a light stimulation source has been directed.