Loading patent…
AssigneesITT Manufacturing Enterprises, Inc., K and M Electronics, Inc.
InventorsJames H. Bowen, Walter E. Blouch, Mark A. Bryant, Roger D. Whiddon, Richard A. Kominsky, Ronald E. Champagne
Estimating the term…
A method for providing user adjustable variable gain for a night vision device which utilizes an image intensifier tube, wherein the image intensifier tube has a given life expectancy, the image intensifier tube is subjected to factory calibration for providing an optimum output during operation, wherein the calibration undesirably differs from tube to tube and is adjustable by variable control means coupled to the tube, whereby when one tube is substituted for another the difference in calibration causes non-optimum performance, the method including the steps of: determining minimum and maximum gain limits associated with the optimum output of the night vision device; factory calibrating gain limiting means according to the determined minimum and maximum gain limits, wherein the gain limiting means are associated with the image intensifier tube and for limiting the variable control means; and, tethering the gain limiting means to the image intensifier tube.
In a night vision device including an image intensifier tube having a given life expectancy, and being subjected to factory calibration for providing an optimum output during operation, wherein said calibration undesirably differs from tube to tube and is adjustable by at least one variable resistor coupled to the tube, whereby when one tube is substituted for another, said difference in calibration causes non-optimal performance, a method for providing a user adjustable variable gain for said night vision device such that said variable gain is substantially insensitive to tube substitutions, comprising the steps of:
In a night vision device including an image intensifier tube having a given life expectancy, and being subjected to factory calibration for providing an optimum output during operation, wherein said calibration undesirably varies from tube to tube and is adjustable by at least one variable resistor coupled to the tube and preset at the factory, whereby when one tube is substituted for another, said difference in calibration causes non-optimum performance, a method for providing a user adjustable variable gain for said night vision device, said variable gain being substantially insensitive to tube substitutions, comprising the steps of:
Dependencies are inferred from the claim text.