X-RAY WINDOW WITH GRID STRUCTURE

• US 20100243895A1
• Filed: 06/14/2010
• Published: 09/30/2010
• Est. Priority Date: 06/01/2007
• Status: Abandoned Application

• Current Assignee: Moxtek (Polatechno Co.,Ltd.)
• Original Assignee: Moxtek (Polatechno Co.,Ltd.)
• Inventors: Anderson, Eric C., Decker, Keith W., Xu, Degao, Perkins, Raymond T.
• Application Number:
  US12/814,912
• Publication Number:
  US 20100243895A1
• Time in Patent Office: Days
• US Class Current: 250/336.100
• CPC Class Codes: H01J 47/004 Windows permeable to X-rays, gamma-rays, or particles windows for discharge tubes with provision for emergence of electrons or ions from the vessel H01J33/04; windows for X-ray tubes H01J35/18
• CPC Class Codes: H01J 5/18 Windows permeable to X-rays, gamma-rays, or particles

Abstract

A window for a radiation detection system includes a plurality of intersecting ribs oriented non-perpendicularly with respect to each other. The plurality of intersecting ribs defines non-rectangular openings therebetween. A support frame is disposed around a perimeter of the plurality of intersecting ribs. A film is disposed over and spans the openings to pass radiation therethrough. The film and the plurality of intersecting ribs are integrally formed from a same material including a polymer.

Claims

1. A window for a radiation detection system, the window comprising:

a) a plurality of intersecting ribs oriented non-perpendicularly with respect to each other;

b) the plurality of intersecting ribs defining non-rectangular openings therebetween;

c) a support frame disposed around a perimeter of the plurality of intersecting ribs;

d) a film disposed over and spanning the openings to pass radiation therethrough; and

e) the film and the plurality of intersecting ribs being integrally formed from a same material including a polymer.

2. A window as in claim 1, wherein the non-rectangular openings have a substantially parallelogram shape.

3. A window as in claim 1, wherein at least one corner of each opening is partially filled with a same material as the plurality of ribs.

4. A window as in claim 1, wherein the openings are hexagonal.

5. A window as in claim 1, wherein at least one corner of the openings includes a fillet with a width greater than a width of the ribs.

6. A window as in claim 1, wherein the plurality of intersecting ribs, the support frame and the film are integrally formed of the same material.

7. A window as in claim 1, wherein the plurality of intersecting ribs comprise silicon, and wherein the film comprises a polymeric film.

8. A window as in claim 1, wherein each rib comprising the plurality of intersecting ribs is about less than 100 μ

m wide.

9. A window as in claim 1, wherein the plurality of ribs includes a first set of parallel ribs oriented non-orthogonal with respect to and intersecting a second set of parallel ribs.

10. A window as in claim 1, further comprising a gas barrier film layer disposed over the film.

11. A window for a radiation detection system, the window comprising:

a) a plurality of intersecting ribs oriented non-perpendicularly with respect to each other;

b) the plurality of intersecting ribs defining non-rectangular openings therebetween;

c) the plurality of ribs including at least a first set of parallel ribs oriented non-perpendicularly with respect to and intersecting a second set of parallel ribs;

d) a support frame disposed around a perimeter of the plurality of intersecting ribs with ends of the plurality of intersecting ribs joined to the support frame;

e) a film disposed over and spanning the plurality of intersecting ribs and openings to pass radiation therethrough;

f) the film and the plurality of intersecting ribs being formed from a same material including a polymer;

g) the film having a thickness less than or equal to 1 μ

m;

h) each rib of the plurality of ribs having a width less than 100 μ

m; and

i) the openings forming between 75 and 90% of a total area within a perimeter of the support frame.

12. A window as in claim 11, wherein the non-rectangular openings have a substantially parallelogram shape.

13. A window as in claim 11, wherein at least one corner of each opening is partially filled with a same material as the plurality of ribs.

14. A window as in claim 11, wherein the openings are hexagonal.

15. A window as in claim 11, wherein at least one corner of the openings includes a fillet with a width greater than a width of the ribs.

16. A window as in claim 11, wherein the plurality of intersecting ribs, the support frame and the film are integrally formed of the same material.

17. A window as in claim 11, wherein the plurality of intersecting ribs comprise silicon, and wherein the film comprises a polymeric film.

18. A radiation detection system comprising:

a) a window to pass radiation therethrough, the window comprising;

i) a plurality of intersecting ribs oriented non-perpendicularly with respect to each other;

ii) the plurality of intersecting ribs defining non-rectangular openings therebetween;

iii) a support frame disposed around a perimeter of the plurality of intersecting ribs;

iv) a film disposed over and spanning the plurality of intersecting ribs and openings to pass radiation therethrough; and

v) the film and the plurality of intersecting ribs being integrally formed from a same material including a polymer; and

b) a sensor disposed behind the window configured to detect radiation passing through the window.

19. A radiation detection system as in claim 18, wherein at least one corner of each opening is partially filled with a same material as the ribs.

20. A radiation detection system as in claim 18, wherein the plurality of ribs includes a first set of parallel ribs oriented non-orthogonal with respect to and intersecting a second set of parallel ribs.