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:
May. 07, 2002
Filed:
Jun. 05, 2000
Yukinobu Ban, Aichi, JP;
Nidek Co., Ltd., Aichi, JP;
Abstract
A corneal shape measuring apparatus for measuring a corneal shape of an eye to be examined, includes: an index projecting section having a first projecting optical system for projecting a corneal shape measuring index onto a cornea of the eye; an index detecting section having a first imaging optical system for obtaining an image of an anterior eye segment including an image of the measuring index formed on the cornea; an arithmetic section for obtaining the corneal shape based on the obtained image of the measuring index; and an input section for inputting, to the arithmetic section, information on a boundary position between a pupil and an iris of the eye. The arithmetic section corrects information on the image of the measuring index based on the information on the boundary position thus inputted, and obtains the corneal shape based on the thus corrected information on the image of the measuring index.