Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1979-01-22
1981-05-19
Henry, Jon W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
350320, 358 55, G02B 718, G02B 2710
Patent
active
042681197
ABSTRACT:
A color-separating prism arrangement for a small portable video camera having solid-state detectors about 0.35 inch in height includes three prisms with the first and second prisms being separated by an air gap, and color separation occurring at respective spectrally selective dichroic plates between the first and second prisms and the second and third prisms, respectively, the separated color components being directed in different directions. The specific geometry of the system provides a prism assembly which is extremely small and compact, having an overall length of about 1.1 inches and an entrance face height of about 1 inch, and with each of the exit faces of the assembly having an effective height of about 1/2 inch.
Each detector is accurately held in position with respect to the associated prism by disposing therebetween and in contact therewith a resilient gasket of foamed material, adjusting the position of the detector, then impregnating the foamed gasket with epoxy resin which sets rigidly to hold the detector in position with respect to the prism.
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Sokolova, R. S., Sov. Jour. of Optical Tech., vol. 37, No. 5, May 1970, pp. 318-320.
Bell & Howell Company
Fitz-Gerald Roger M.
Henry Jon W.
Stotland Harold V.
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