Dental X-ray image detection system
First Claim
Patent Images
1. A dental X-ray detection system for detecting at least one tooth at a time, said system including an optically sensitive sensor optically coupled to a luminescent screen, an optical fibre device for coupling said screen to said sensor comprising in combination with said screen and sensor:
- at least one optical fibre having an optical axis, said at least one fibre having first and second end surfaces, one end having a first surface oblique with respect to said optical axis, said first surface defining a first area of a given magnitude, one of said end surfaces comprising means for receiving an X-ray image transmitted thereto by said luminescent screen, said second end surface defining a second area of a second magnitude different than the first area magnitude, the other of said surfaces comprising means for transmitting said received image to said sensor, said device further comprising a cascade of two optically coupled fibre optics devices each comprising means for reducing a dimension of the received X-ray image independently of each other.
1 Assignment
0 Petitions
Accused Products
Abstract
A fibre optics device provided with an obliquely cut end surface transmits an optical image projected onto that surface to a second end face thereof forming on the second end face on image with a reduced surface area. Using a crossed cascade of two fibre optics devices, an image area is reduced in two directions.
-
Citations
18 Claims
-
1. A dental X-ray detection system for detecting at least one tooth at a time, said system including an optically sensitive sensor optically coupled to a luminescent screen, an optical fibre device for coupling said screen to said sensor comprising in combination with said screen and sensor:
at least one optical fibre having an optical axis, said at least one fibre having first and second end surfaces, one end having a first surface oblique with respect to said optical axis, said first surface defining a first area of a given magnitude, one of said end surfaces comprising means for receiving an X-ray image transmitted thereto by said luminescent screen, said second end surface defining a second area of a second magnitude different than the first area magnitude, the other of said surfaces comprising means for transmitting said received image to said sensor, said device further comprising a cascade of two optically coupled fibre optics devices each comprising means for reducing a dimension of the received X-ray image independently of each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
Specification