Infrared vidicon system
AssigneeBarnes Engineering Company
InventorsRobert W. Astheimer, Gerald Falbel
Life of this patent
Estimating the term…
Abstract
An infrared vidicon system having capacitive type target elements is provided with a means for modulating the target scene with a duty cycle of less than 50% and the reading of the target scene in a predetermined sequence when modulation is not being applied to the vidicon tube. The sequentially read target scene is stored and continuously played back to prevent flicker. This operation allows signal buildup, because the target scene is not discharged every frame. This vidicon system also reduces the non-uniformity of responsivity across the surface of the target of the tube by illuminating the target by an adjustable uniform source of infrared radiation.
Claims7
An infrared vidicon system for providing an infrared picture of a target scene, comprising in combination
- a. a vidicon image tube having a capacitance type vidicon target,
- b. chopper means for modulating the radiation applied to said vidicon target, the duty cycle of said chopper means being less than 50%,
- c. storage means for storing the scene of a single frame of said vidicon image tube,
- d. a display monitor, and
- e. means for continuously playing back on said display monitor said single frame from said storage means.
Dependencies are inferred from the claim text.