A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 3/113 (2006.01)
Patent
CA 2664543
An apparatus for determining a position of a subject's cornea, comprising a camera, a first illumination apparatus adapted to provide a first beam of light and a first diffuse portion of light that are coincident, and a second illumination apparatus adapted to provide a second beam of light and a second diffuse portion of light, that are coincident. In some embodiments, the first, second, third and fourth images are disposed on the midpoints of a square, when a cornea is located along an optical axis of camera.
La présente invention concerne un appareil destiné à déterminer la position de la cornée d'un individu, comprenant une caméra, un premier dispositif d'éclairage conçu pour fournir un premier faisceau de lumière et une première partie de lumière diffuse qui sont coïncidents, et un second dispositif d'éclairage conçu pour fournir un second faisceau de lumière et une seconde partie de lumière diffuse qui sont coïncidents. Dans certaines modes de réalisation, la première, la deuxième, la troisième et la quatrième image sont disposées sur les points médians d'un carré, lorsqu'une cornée se trouve la long d'un axe optique de la caméra.
Allred Lloyd G.
Eagan Barry T.
Lai Ming
Bausch & Lomb Incorporated
Osler Hoskin & Harcourt Llp
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