Refractive X-ray arrangement
AssigneeMamea Imaging AB
InventorBjorn Cederstrom
Life of this patent
Estimating the term…
Abstract
The present invention refers to a refractive arrangement for X-rays, and specially to a lens comprising: a member of low-Z material, said member of low-Z material having a first end adapted to receive x-rays emitted from an x-ray source and a second end from which emerge said x-rays received at said first end. It further comprises a plurality of substantially saw-tooth formed grooves disposed between said first and second ends, said plurality of grooves oriented such that said x-rays which are received at said first end, pass through said member of low-Z material and said plurality of grooves, and emerge from said second end, are refracted to a focal point.
Claims22
A refractive arrangement for X-rays comprising:
- a member of (101, 201, 301, 401) low-Z material, said part of low-Z material having a first end (105, 205, 305) adapted to receive x-rays emitted from an x-ray source and a second end (106, 206, 306) from which emerge said x-rays received at said first end (105, 205, 305), and first and second surfaces (207, 208),
- characterized in, that it further comprises a plurality of substantially sawtooth formed grooves (103, 104) disposed between said first and second ends (105, 205, 305;
- 106, 206, 306) on at least one of said first or second surfaces (207, 208), said plurality of grooves oriented such that said x-rays which are received at said first end, pass through said member of low-Z material and said plurality of grooves, and emerge from said second end, are refracted to a focal point.
The arrangement according to any of preceding claims, characterized in, that said grooves have the form of sawteeth with substantially straight cuts.
The arrangement according to any of preceding claims, characterized in, that said pluralities of grooves have varying sizes, decreasing or increasing continuously from said first end towards said second end.
A refractive X-ray lens (100, 300, 400, 500, 600) comprising:
- a volume of (101, 201, 301, 401) low-Z material, said volume having a first end (105, 205, 305) adapted to receive x-rays emitted from an x-ray source and a second end (106, 206, 306) from which emerge said x-rays received at said first end (105, 205, 305) and first and second surfaces (207, 208),
- characterized in that said volume further comprises a plurality of substantially saw-tooth formed grooves (103, 104) disposed between said first and second ends (105, 205, 305;
- 106, 206, 306) on at least one of said at least two surface (207, 208), said plurality of grooves oriented such that said x-rays which are received at said first end, pass through said volume of low-Z material and said plurality of grooves, and emerge from said second end, are refracted to a focal point
The lens according to any of preceding claims, characterized in, that said volume of low-Z material consists of a plastic material, specially one from the group comprising polymethylmethacylate, vinyl or PVC.
A method of fabricating the saw-tooth profile refractive x-ray lens characterized by,
- transferring shapes of grooves onto a carrier by means of an engraving arrangement,
- producing a master, and
- using said master to pressing grooves on a suitable material.
Dependencies are inferred from the claim text.