Claims
- 1. An X-ray image intensifier comprising:
- a vacuum envelope comprising:
- an X-ray input window, said input window being formed of metal or alloy and having an outer surface and an inner surface, and
- a rough surface-hardened layer formed on said inner surface; and
- an input screen having an entrance surface formed in direct contact with said rough surface-hardened layer and having a phosphor layer.
- 2. An X-ray image intensifier according to claim 1, wherein said metal X-ray input window is made of aluminum or an aluminum alloy.
- 3. An X-ray image intensifier according to claim 2, wherein said rough, surface-hardened layer has a Vickers hardness of 120 to 250.
- 4. An X-ray image intensifier according to claim 1, wherein said rough, surface-hardened layer has a surface roughness of 2 to 10 .mu.m.
- 5. An X-ray image intensifier according to claim 1, wherein said rough, surface-hardened layer is formed by impinging hard spherical particles onto said inner surface of said input window.
- 6. An X-ray image intensifier according to claim 1, wherein said input screen further comprises a reflective substance layer formed on said rough, surface-hardened layer.
- 7. An X-ray image intensifier according to claim 6, wherein said reflective substance layer is a metal thin film.
- 8. An X-ray image intensifier according to claim 1, said rough surface-hardened layer having a Vickers hardness higher than that in an inner region of said X-ray input window.
- 9. An X-ray image intensifier comprising:
- a vacuum envelope comprising:
- an X-ray input window, said input window being formed of a metal or an alloy and having an outer surface and an inner surface; and
- a rough surface-hardened layer formed on said inner surface;
- an input screen having an entrance surface formed in direct contact with said rough surface-hardened layer, said input screen having a phosphor layer and a photocathode formed on said phosphor layer;
- a focusing electrode;
- an anode; and
- an output screen,
- wherein said input screen, said focusing electrode, said anode, and said output screen are successively arranged in said vacuum envelope.
- 10. An X-ray image intensifier according to claim 9, wherein said metal X-ray input window is made of aluminum or an aluminum alloy.
- 11. An X-ray image intensifier according to claim 10, wherein said rough, surface-hardened layer has a Vickers hardness of 120 to 250.
- 12. An X-ray image intensifier according to claim 9, wherein said rough, surface-hardened layer has a surface roughness of 2 to 10 .mu.m.
- 13. An X-ray image intensifier according to claim 9, wherein said input screen further comprises a reflective substance layer formed on said rough, surface-hardened layer.
- 14. An X-ray image intensifier according to claim 13, wherein said reflective substance layer is a metal thin film.
- 15. An X-ray image intensifier according to claim 9, said rough surface-hardened layer having a Vickers hardness higher than that in an inner region of said X-ray input window.
- 16. An X-ray image intensifier comprising:
- a vacuum envelope comprising:
- an X-ray input window, said input window being formed of aluminum or an aluminum alloy and having an outer surface and an inner surface; and
- a rough surface-hardened layer formed on said inner surface;
- an input screen having an entrance surface formed in direct contact with said rough surface-hardened layer, said input screen having a phosphor layer and a photocathode formed on said phosphor layer;
- a focusing electrode;
- an anode; and
- an output screen,
- wherein said input screen, said focusing electrode, said anode, and said output screen are successively arranged in said vacuum envelope, and
- wherein said rough, surface-hardened layer is formed by impinging hard spherical particles onto said inner surface of said input window.
- 17. An X-ray image intensifier according to claim 16, wherein said rough, surface-hardened layer has a surface roughness of 2 to 10 .mu.m.
- 18. An X-ray image intensifier according to claim 16, wherein said rough, surface-hardened layer has a Vickers hardness of 120 to 250.
- 19. An X-ray image intensifier according to claim 18, wherein said input screen further comprises a reflective substance layer formed on said rough, surface-hardened layer.
- 20. An X-ray image intensifier according to claim 19, wherein said reflective substance layer is a metal thin film.
- 21. An X-ray image intensifier according to claim 16, said rough surface-hardened layer having a Vickers hardness higher than that in an inner region of said X-ray input window.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5-056270 |
Mar 1993 |
JPX |
|
Parent Case Info
This is a continuation of application No. 08/335,777, filed as PCT/JP94/00430, on Mar. 17, 1994, which was abandoned.
US Referenced Citations (6)
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EPX |
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Continuations (1)
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Number |
Date |
Country |
Parent |
335777 |
Nov 1994 |
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