Patent ID: 9282926
Filing Date: 2016-03-15
CPC Classification: A61B,A61C

Claim Text:
1. A method of obtaining an image of at least one surface of at least one object, the method comprising: providing a light beam that projects an image through at least one first aperture onto the at least one surface of the at least one object, wherein the image is formed by a reference pattern projector that is arranged in a path of the light beam and is an optical grid having a predetermined pattern; and providing light back-scattered by the at least one surface, and representing a further version of the image projected onto the at least one surface, through at least one second aperture to an image sensor, wherein at least one of the first and second apertures is elliptical in shape and another of the first and second apertures is non-elliptical in shape, wherein an axis along which the at least one aperture that is elliptical in shape extends is perpendicular to an axis along which at least part of the predetermined pattern extends, wherein the first aperture has a predetermined size that is larger than a size of the second aperture, such that the image projected onto the object has contrast along at least one direction, and the further version of the image has contrast along at least two directions, and wherein the at least one object is a dental object.