Farrer, Stephen W.,Neal, Daniel R.,Raymond, Thomas D.,Powers, William S.,Campbell, Charles E.
申请号：
AU2008268144
公开号：
AU2008268144B2
申请日:
2008.06.27
申请国别(地区):
AU
年份:
2012
代理人:
摘要：
A system measures a corneal topography of an eye. The system includes a group offirst light sources arranged around a central axis, the group being separatedfrom the axis by a radial distance defining an aperture in the group； a pluralityof second light sources； a detector array； and an optical system adapted to providelight 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 lightsources from the cornea, through the aperture, to the detector array. The opticalsystem includes an optical element having a focal length,/ The second light sourcesare disposed to be in an optical path approximately one focal length,/ away fromthe optical element.
