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:
Jul. 12, 2011
Filed:
Jun. 27, 2007
Charles E. Campbell, Berkeley, CA (US);
Stephen W. Farrer, Albuquerque, NM (US);
Daniel R. Neal, Tijeras, NM (US);
William S. Powers, Albuquerque, NM (US);
Thomas D. Raymond, Edgewood, NM (US);
Charles E. Campbell, Berkeley, CA (US);
Stephen W. Farrer, Albuquerque, NM (US);
Daniel R. Neal, Tijeras, NM (US);
William S. Powers, Albuquerque, NM (US);
Thomas D. Raymond, Edgewood, NM (US);
AMO Wavefront Sciences LLC, Santa Ana, CA (US);
Abstract
A system measures a corneal topography of an eye. The system includes a group of first light sources arranged around a central axis, the group being separated from the axis by a radial distance defining an aperture in the group; a plurality of second light sources; a detector array; and an optical system adapted to provide light from the second light sources through the aperture to a cornea of an eye, and to provide images of the first light sources and images of the second light sources from the cornea, through the aperture, to the detector array. The optical system includes an optical element having a focal length, f. The second light sources are disposed to be in an optical path approximately one focal length, f, away from the optical element.