Patent ID: 8319977

Claim:
A 3-dimensional (3D) measuring apparatus comprising: a stage supporting an object; a projection portion comprising: a first light and a second light which each generate light, a first lattice and a second lattice through which lights generated from the first and the second light pass respectively, a lattice movement instrument which controls the first and the second lattices simultaneously with predetermined n times; and a first projection lens and a second projection lens which receive the lights from the first and the second lattices, respectively, to project the lights towards the object alternately, an imaging portion comprising: an imaging lens which receives a first reflected light and a second reflected light by the object alternately; and a camera which takes an image, having passed through the imaging lens, wherein the movement instrument does not move the imaging portion, so that the first and second lattices of the projection portion are moved independently with respect to the camera of the imaging portion, and wherein the 3D measuring apparatus further comprises a light path converter including a plurality of mirrors that are inclined at a same angle and convert paths of the lights exiting from the first and second projection lenses so that the lights having passed through the first and second lattices, which are moved with the predetermined n times by the lattice movement instrument, are incident onto the object at the same angle in different directions of the object.