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:
Dec. 02, 1997
Filed:
Oct. 30, 1995
Hisashi Tsukada, Tokyo, JP;
Tsutomu Sato, Tokyo, JP;
Hideki Hatanaka, Tokyo, JP;
Minoru Kamiya, Tokyo, JP;
Takeyuki Kato, Tokyo, JP;
Kabushiki Kaisha Topcon, Tokyo, JP;
Abstract
A corneal shape measuring apparatus is provided which measures a corneal shape in such a way that a reflection image from a cornea (15) is recorded as image data and then the image data is analyzed. The apparatus includes LEDs (14) for projecting an index onto a subject's eye in order to detect a position of an apparatus body (3) in up, down, right, and left directions and in forward and backward directions with respect to the eye, an automatic photographic mode in which the eye is automatically photographed when a position of the apparatus body in up, down, right, and left directions with respect to the and a position of the apparatus body in forward and backward directions with respect to the eye are each within a predetermined range, a semi-automatic photographic mode in which the eye is photographed when a position of the apparatus body in up, down, right, and left directions with respect to the eye and a position of the apparatus body in forward and backward directions with respect to the eye are each within the predetermined range and, at the same time, a photography switch (11') is operated, and a manual photographic mode in which the eye is photographed when the photography switch is operated regardless of a position of the apparatus body with respect to the eye. A positional relationship of the apparatus body (3) to the eye is stored correspondingly to recorded image data.