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:
Oct. 17, 2000
Filed:
May. 03, 1999
Hiroshi Iijima, Tokyo, JP;
Kabushiki Kaisha Topcon, Tokyo, JP;
Abstract
In an ophthalmologic apparatus which can start a measurement or a photographing operation with respect to an eye to be examined by suitably making an automatic alignment with a cornea of the eye as a center, When a diseased eye is to be measured, slight reflected light (e.g., cornea scattering light) except for reflected light from a vertex of the cornea of the eye is interrupted by an XY alignment detecting stop even when this slight reflected light is detected by a position detecting sensor. Accordingly, since no slight reflected light is almost incident to a light quantity detecting sensor, the XY alignment light quantity detecting circuit does not output an alignment completion signal to a control circuit. Thus, the control circuit performs a control operation such that the measurement or the photographing operation with respect to the eye is not performed.