Electrostatically-focused image intensifier tube and method of making
Patent 5408088 Issued on April 18, 1995. Estimated Expiration Date: 
December 15, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 15, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3114044 3487258 Image tube Electron emission elements Patent #: 5304815 InventorsApplicationNo. 168022 filed on 12/15/1993US Classes:250/214VT, Vacuum tube type313/524With optical deviceExaminersPrimary: Nelms, David C.Assistant: Allen, Stephone B. Attorney, Agent or FirmInternational ClassH01J 031/50AbstractAn improved electrostatically-focused image intensifier tube, and a night vision device having such a tube, is substantially free of the spurious bright spots generally known as "PC Flash". The improved image intensifier tube includes an insulator which resists emission of electrons into the interior cavity of the tube, or a structure to capture such emitted electrons before they can fall into a microchannel plate of the tube and cause the PC Flash. A method of making such an image intensifier tube is also disclosed. | |
