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:
Jan. 22, 2013
Filed:
Aug. 22, 2006
Yoshinobu Ebisawa, Hamamatsu, JP;
Yoshinobu Ebisawa, Hamamatsu, JP;
Abstract
A pupil detection device includes a camera, a light source disposed at the camera, an optical system, and an image processing system, which are disposed so that the examinee's face is irradiated with the light from the light source from the camera, and a face image including a pupil is formed in the camera. The light source includes a first light source, having a first wavelength that makes a bright pupil image by reflection in the examinee's pupil, and a second light source having a second wavelength that makes a dark pupil image by reflection in the examinee's pupil, but otherwise exhibiting the same illumination effect as the first light source. The camera includes a first image data acquisition system using the first illumination light source, and a second image data acquisition system using the second illumination light source.