Claims
- 1. A direct-vision display device comprising a cathode ray tube having a display window, wherein the improvement comprises a holder comprising a transparent plate arranged in front of the display window, and a transparent liquid in the space between the display window and the plate, said transparent liquid having a refractive index which differs maximally 0.25 from refractive indices of the display window and the plate.
- 2. A display device as claimed in claim 1, in which the cathode ray tube comprises an implosion-protection band around the display window, characterized in that the holder is secured to the implosion-protection band.
- 3. A display device as claimed in claim 2, characterized in that side walls of the holder are opaque.
- 4. A display device as claimed in claim 1, in which the cathode ray tube comprises an implosion-protection band around the display window, characterized in that said implosion-protection band, viewed in a direction transversely to the display window, is extended in the direction of the plate in such a manner that a part of the implosion-protection band forms part of the holder.
- 5. A display device as claimed in claim 4, characterized in that side walls of the holder are opaque.
- 6. A display device as claimed in claim 1, characterized in that the transparent plate is flat.
- 7. A display device as claimed in claim 1, characterized in that the differences in refractive index are smaller than 0.1.
- 8. A display device as claimed in claim 1, comprising a housing for the cathode ray tube, characterized in that the holder is at least partially formed by the housing.
- 9. A display device as claimed in claim 1, characterized in that the display device is a monitor.
- 10. A direct-vision display device comprising a cathode ray tube having display window, wherein the improvement comprises a holder comprising a transparent plate arranged in front of the display window, and a gel in the space between the display window and the plate, said gel having a refractive index which differs maximally 0.25 from the refractive indices of the display window and the plate.
- 11. A display device as claimed in claim 10, in which the cathode ray tube comprises an implosion-protection band around the display window, characterized in that the holder is secured to the implosion-protection band.
- 12. A display device as claimed in claim 11, characterized in that side walls of the holder are opaque.
- 13. A display device as claimed in claim 10, in which the cathode ray tube comprises an implosion-protection band around the display window, characterized in that said implosion-protection band, viewed in a direction transversely to the display window, is extended in the direction of the plate in such a manner that a part of the implosion-protection band forms part of the holder.
- 14. A display device as claimed in claim 13, characterized in that side walls of the holder are opaque.
- 15. A display device as claimed in claim 10, characterized in that the transparent plate is flat.
- 16. A display device as claimed in claim 10, characterized in that the differences in refractive index are smaller than 0.1.
- 17. A display device as claimed in claim 10, comprising a housing for the cathode ray tube, characterized in that the holder is at least partially formed by the housing.
- 18. A display device as claimed in claim 10, characterized in that the display device is a monitor.
- 19. A direct-vision display device comprising a cathode ray tube having a display window, wherein the improvement comprises a holder comprising a transparent plate arranged in front of the display window in such a manner that there is a space between the display window and the plate, and said holder comprising an inlet and an outlet for supplying liquid to the space and draining it from the space.
- 20. A display device as claimed in claim 19, in which the cathode ray tube comprises an implosion-protection band around the display window, characterized in that the holder is secured to the implosion-protection band.
- 21. A display device as claimed in claim 19, in which the cathode ray tube comprises an implosion-protection band around the display window, characterized in that said implosion-protection band, viewed in a direction transversely to the display window, is extended in the direction of the plate, in such a manner that a part of the implosion-protection band forms part of the holder.
- 22. A display device as claimed in claim 20, characterized in that side walls of the holder are opaque.
- 23. A display device as claimed in claim 22, characterized in that the transparent plate is flat.
- 24. A display device as claimed in claim 19, comprising a housing for the cathode ray tube, characterized in that the holder is at least partially formed by the housing.
- 25. A display device as claimed in claim 19, characterized in that the display device is a monitor.
- 26. A display device as claimed in claim 21, characterized in that side walls of the holder are opaque.
- 27. A display device as claimed in claim 19, characterized in that the transparent plate is flat.
- 28. A direct-vision display device comprising a cathode ray tube having a display window, wherein the improvement comprises a holder comprising a transparent plate arranged in front of the display window, and a transparent substance in the space between the display window and the plate, said transparent substance having a refractive index which differs maximally 0.25 from the refractive indices of the display window and the plate, and said plate being at least substantially flat, said cathode ray tube being a monitor.
Priority Claims (1)
Number |
Date |
Country |
Kind |
09300250 |
Mar 1993 |
BEX |
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Parent Case Info
This is a continuation of application Ser. No. 08/213,770, filed Mar. 16, 1994, now abandoned.
The invention relates to a direct-vision display device comprising a cathode ray tube having a display window.
US Referenced Citations (17)
Foreign Referenced Citations (1)
Number |
Date |
Country |
4016590 |
Nov 1991 |
DEX |
Non-Patent Literature Citations (1)
Entry |
Webster's II New Riverside University Dictionary p. 567. |
Continuations (1)
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Number |
Date |
Country |
Parent |
213770 |
Mar 1994 |
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