Method of manufacture of laminate radiation collimator
First Claim
1. In a method of manufacturing a laminate radiation collimator which has a plurality of parallel collimating layers of radiation absorbent material each of which has a plurality of spaced apart radiation transmissive passages and wherein corresponding ones of said passages of each of the collimating layers are aligned to define a plurality of spaced apart radiation transmissive paths through the collimator, the steps comprising:
- forming said plurality of collimating layers including forming said radiation transmissive passages therein,assembling said collimator by arranging said collimating layers in parallel, spaced apart relationship with said corresponding radiation transmissive passages of said collimating layers in alignment and by interposing parallel layers of radiation transmissive material between said collimating layers in contact therewith, andsecuring said collimating layers together in said parallel spaced apart relationship with said layers of radiation transmissive material interposed therebetween to form a collimator wherein said radiation absorbent material is present only at spaced apart intervals along said radiation transmissive paths.
0 Assignments
0 Petitions
Accused Products
Abstract
A collimator (21, 38, 38A) transmits intercepted X rays or the like along an array of predetermined spaced apart paths (22, 22A), which may be parallel or convergent, while absorbing intercepted radiation which is traveling in other directions. A laminated construction of the collimator provides for an extremely large number of very minute and closely spaced radiation passages (42, 42A) which may have a noncircular cross section to increase transmissivity. The laminated construction also reduces the amount of heavy and sometimes costly radiation absorbent material required in the collimator, enables precise control of the transmitted radiation paths and facilitates the establishing of a desired focal point for the paths. Photoetching techniques, including optical image reduction, are used in the manufacture of the collimator laminations. In some variations of the method, the radiation absorbent material is plated onto the laminations.
86 Citations
8 Claims
-
1. In a method of manufacturing a laminate radiation collimator which has a plurality of parallel collimating layers of radiation absorbent material each of which has a plurality of spaced apart radiation transmissive passages and wherein corresponding ones of said passages of each of the collimating layers are aligned to define a plurality of spaced apart radiation transmissive paths through the collimator, the steps comprising:
-
forming said plurality of collimating layers including forming said radiation transmissive passages therein, assembling said collimator by arranging said collimating layers in parallel, spaced apart relationship with said corresponding radiation transmissive passages of said collimating layers in alignment and by interposing parallel layers of radiation transmissive material between said collimating layers in contact therewith, and securing said collimating layers together in said parallel spaced apart relationship with said layers of radiation transmissive material interposed therebetween to form a collimator wherein said radiation absorbent material is present only at spaced apart intervals along said radiation transmissive paths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification