Fiber optic image inverters were developed under the sponsorship of the Night Vision Laboratories of the United States Army Electronics Command for use with second generation proximity focussed "wafer" type intensifier tubes. Figure 1 schematically shows the main components of this type of image tube. These include the input fiber optic window which supports the photo-cath-ode, the microchannel plate which provides the amplification and the image inverter which forms the rear window of the tube. The reason for using the fiber optic inverter is that a proximity focussed tube does not electronically invert the image, and some method of optical erection is needed to compensate for the inversion caused by the objective lens. The alternative to a wafer tube with a fiber optic inverter is an electronically inverting second generation tube, but it is not proposed to compare the two methods in this paper.
Fiber Optic Image Inverters
Fiber Optics Comes of Age III ; 1972 ; San Mateo,United States
Proc. SPIE ; 0031
1973-04-01
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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