Dental x-ray imaging device

Abstract

Disclosed is a dental X-ray imaging device having a curved detector. The dental X-ray imaging device according to the present invention comprises: an X-ray source for radially emitting X-rays; and a curved detector formed in a cylindrical two-dimensional curved shape or a round three-dimensional curved shape, which is arranged to be spaced apart at a predetermined distance from the X-ray source and has substantially the same radius of curvature as the predetermined distance.

1 . A dental X-ray imaging device comprising:
 an X-ray source radially emitting X-rays; and   a curved detector having an incidence surface and spaced apart from the X-ray source,   wherein the entire incidence surface of the curved detector is disposed at an equal distance from the X-ray source, and X-rays emitted from the X-ray source are incident on the entire incidence surface at an equal angle.   
     
     
         2 . The dental X-ray imaging device of  claim 1 , wherein
 the curved detector includes a plurality of pixels, wherein a curvature of each of the pixels, given that an incidence surface of each pixel has a tilted angle θ relative to an incidence surface of a neighboring pixel, satisfies a following expression of relation within an error range of 20%:   one pixel curvature=180°−2θ,   wherein, θ=a cos ((a size of one pixel/2)/FDD) (wherein, FDD=the predetermined distance).   
     
     
         3 . The dental X-ray imaging device of  claim 1 , wherein the curved detector is a flexible detector. 
     
     
         4 . The dental X-ray imaging device of  claim 3 , further comprising:
 a support frame supporting the curved detector, wherein the support frame is configured to adjust a form of the curved detector.   
     
     
         5 . The dental X-ray imaging device of  claim 1 , wherein the curved detector has a pixel structure in a triangular shape. 
     
     
         6 . The dental X-ray imaging device of  claim 1 , wherein the curved detector has at least two different curvatures. 
     
     
         7 . The dental X-ray imaging device of  claim 6 , wherein the curved detector is configured to have a horizontal curvature being larger than a vertical curvature. 
     
     
         8 . The dental X-ray imaging device of  claim 1 , wherein
 the curved detector includes a plurality of pixels being in contact with each other at a predetermined angle along a curved surface.   
     
     
         9 . The dental X-ray imaging device of  claim 1 , wherein
 the curved detector is a detector for panoramic radiography, a detector for computed tomography, or a detector for cephalometric radiography.