Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1990-10-24
1991-09-10
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
445 52, H01J 3150
Patent
active
050476246
ABSTRACT:
An X-ray image intensifier has an input phosphor screen with a substrate in which a large number of small holes are formed, and a fluorescent material filled in the small holes. A ratio of a maximum inner diameter to a depth of each small hole is set to be 0.5 or less. Alternatively, the input phosphor screen of the X-ray image intensifier of the invention includes a substrate in which a large number of small holes are formed, a low-refractive-index material layer formed on the inner wall of each small hole, and a fluorescent material having a refractive index higher than the low-refractive-index material layer filling in each small hole. The input phosphor screen of the X-ray image intensifier of the invention is manufactured by forming a large number of small holes in a substrate composed of photosensitive glass, forming the substrate into an arcuated shape by hot pressing, converting the substrate into crystallized glass by a heat treatment and obtaining an input phosphor screen by filling the small holes with a fluorescent material.
REFERENCES:
patent: 3265480 (1966-08-01), Hicks, Jr.
patent: 4893020 (1990-11-01), Ono
patent: 4943254 (1990-07-01), Vieuse et al.
Anno Hidero
Ono Katsuhiro
Kabushiki Kaisha Toshiba
Le Que T.
Nelms David C.
LandOfFree
Method of manufacturing and X-ray image intensifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing and X-ray image intensifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing and X-ray image intensifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-541836