Imaging resolution of X-ray digital sensors

Details Imaging resolution of X-ray digital sensors Imaging resolution of X-ray digital sensors

1997-10-31

2000-05-30

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

25037009, 250366, 250367, 250368, G21K 400

Patent

active

060693614

ABSTRACT:
An improved solid-state detector for use in a digital X-Ray imaging system. The detector includes two or more silicon CCDs that are sandwiched together with phosphor screens or layers between them in order to improve the overall sensitivity of the detector to X-rays. In order to improve the resolution of the device, the CCDs are offset relative to one another so that the pixels of one cover the nonsensing portions of the other. The phosphorescent screen is combined with an opaque mask containing holes corresponding to positions of the pixels in the CCDs. This arrangement improves image quality by preventing light resulting from an X-ray striking the phosphorescent screen in a particular location from "bleeding" and exposing adjacent pixels. One such screen is placed on each side of the phosphorescent layer with holes aligned with the corresponding CCD, or the screen can be affixed directly to the CCD prior to assembly of the device, or "spots" of the phosphorescent material can be applied directly to the CCDs over each pixel.

REFERENCES:
patent: 5109159 (1992-04-01), Hagiwara et al.
patent: 5220170 (1993-06-01), Cox et al.
patent: 5391879 (1995-02-01), Tran et al.
patent: 5880470 (1999-03-01), Umetani et al.

Affiliated with

Also associated with

Rating

Imaging resolution of X-ray digital sensors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Imaging resolution of X-ray digital sensors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging resolution of X-ray digital sensors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1912031