X-ray or gamma ray systems or devices – Beam control – Collimator
Patent
1997-02-11
1998-06-16
Church, Craig E.
X-ray or gamma ray systems or devices
Beam control
Collimator
378145, G21K 102
Patent
active
057683395
ABSTRACT:
The invention claimed is a collimator for x-rays and the fabrication process for said collimator. The collimator, in its preferred embodiment, displays the general shape of a tube, having two apertures, an entrance aperture and an exit aperture. The walls of the collimator tube are not parallel to each other but rather are paraboloidal in longitudinal section. The geometry of the collimator tube is, therefore, circular in transverse cross-section and paraboloidal in longitudinal section, thereby resulting in a tube whose entrance aperture is of a smaller diameter than its exit aperture. The collimator geometry described is referred to herein as a tubular paraboloid. The preferred embodiment comprises a first tubular paraboloid, or first reflector, and a second tubular paraboloid, or second reflector, each having an outer surface and an ultrasmooth, reflecting inner surface, the second reflector being of smaller diameter than the first reflector and being held by suitable means in assembly concentrically with the first reflector, thereby defining an entrance aperture and an exit aperture. Alternate embodiments may employ more than two nested paraboloid reflectors and may also comprise a truncated cone reflector at the entrance aperture to provide a two reflection figure. In addition, the process developed is suitable for fabrication of optics with very small apertures and ultra smooth interior reflecting surfaces. Many types of reflecting surfaces may be produced, including gold, copper, nickel, palladium and others. The process is a replication method, so that once a master surface for an optic has been prepared, subsequent copies can be inexpensively reproduced. Thus, the fabrication process described is best suited for the production of many identical optics, rather than one-of-a-kind devices, and in a variety of unusual geometries in addition to tubular paraboloids.
REFERENCES:
patent: 4063088 (1977-12-01), Dailey
patent: 5333166 (1994-07-01), Seligson et al.
Church Craig E.
Estevez, Atty. Enrique G.
LandOfFree
Collimator for x-ray spectroscopy does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Collimator for x-ray spectroscopy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Collimator for x-ray spectroscopy will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1735349