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:
Apr. 17, 2001
Filed:
Mar. 01, 2000
Masahiro Shibutani, Tokyo-to, JP;
Satoru Niimura, Tokyo-to, JP;
Kabushiki Kaisha TOPCON, Tokyo-to, JP;
Abstract
An ophthalmologic measuring system, comprising a light source unit,for emitting an illuminating light beam for illuminating a fundus of each of both eyes of a person under measurement, a projection optical system,for projecting the illuminating light beam from said light source unit to the fundus of each of the eyes of the person under measurement, a photodetection optical system,including a light blocking member which blocking a part of a reflection light beam coming from the fundus of the eye of the person under measurement and is arranged in an optical path and at approximately conjugate position to a pupil of the eye under measurement so that change occurs in light amount distribution depending on ocular refractive power, a photodetection unit,arranged at approximately conjugate position to the pupil of the eye under measurement and receives photodetection light beam from said photodetection optical system, a storage unit for storing a photodetection signal of said photodetection unit, a control arithmetic unit,for obtaining at least one of interpupillary distances, ocular refractive powers and pupil diameters of the eye under measurement based on the photodetection signal of the photodetection unit, and a display unit,for displaying an anterior ocular segment image of the eye under measurement during measurement period and for displaying over time and at real time the data of interpupillary distance, ocular refractive power and pupil diameter of the eye under measurement, which are results of measurement during measurement period.