Two dimensional display of detector response

A cathode-ray tube for generating radiation of the appropriate frequency band to test an infrared detector comprising:

• electron-beam generating means;
• beam-curving, electrode plate means for curving the electron beam generated by said electron beam generating means;
• beam-shaping electrode means situated so as to focus the beam into a desired shape;
• thin, infrared light emissive phosphor screen means;
• deflection means for scanning said electron beam across a prescribed area on said phosphor screen means so that a source of infrared radiation is swept over a prescribed area on the opposed side of said phosphor screen means, and
• window means for transmitting the desired band of frequencies generated by the interaction of the electron beam with said phosphor screen means.

A cathode-ray tube for generating radiation of the appropriate frequency band to test an infrared detector comprising:

• electron-beam generating means,
• beam-curving, electrode means for curving the electron beam generated by said electron beam-generating means;
• beam-shaping, electrode means situated so as to focus the beam into a desired shape;
• thin-membrane, screen means formed by a thin-film dielectric substrate with a refractory metal film deposited on it;
• and
• deflection means for scanning said electron beam across a prescribed area on said membrane screen means so that a hot spot of infrared radiation generated by said beam on said screen means is swept over a prescribed area.

A detector contour plotter for testing the response of a detector to a stimulus comprising:

• means for generating a raster in the form of a flying hot spot of infrared radiation on a target, said raster-generating means including a cathode-ray tube with a hidden electron gun, said target including a thin-film membrane capable of forming a hot spot of infrared radiation in the desired region of the spectrum on the opposed side thereof when said thin-film membrane is locally heated by the electron beam of said cathode ray tube;
• focusing means for focusing an image of said raster on the detector under test;
• cathode-ray imaging means having a two-dimensional scan which is driven in synchronism with said raster;
• and
• means for applying the output response of the detector under test to said cathode-ray imaging means to control the intensity of its scanning beam in accordance with said detector output response.

A cathode-ray tube for generating radiation of the appropriate frequency band to test an infrared detector comprising:

• electron-beam generating means;
• beam-curving, electrode plate means for curving the electron beam generated by said electron beam generating means;
• beam-shaping electrode means situated so as to focus the beam into a desired shape;
• infra-red phosphor screen means;
• deflection means for scanning said electron beam across a prescribed area on said phosphor screen means so that a source of infrared radiation is swept over a prescribed area on the opposed side of said phosphor screen means;
• and
• silicon window means for transmitting the desired band of frequencies generated by the interaction of the electron beam with said phosphor screen means.

A method for plotting the contours of a radiation detector under test comprising the steps of:

• generating a raster with an electron beam on a thin-membrane screen formed by a thin-film dielectric substrate with a refractory metal film deposited thereon;
• focusing the radiation from the point source on to the face of the radiation detector under test;
• driving a cathode-ray imaging means in synchronism with said raster;
• and
• applying the output response of the detector under test to said cathode-ray imaging means to control the intensity of its scanning beam in accordance with said detector output response.

A method for plotting the contours of a radiation detector under test comprising the steps of:

• generating a raster on an extremely thin film infra-red emissive target so that a point source of infrared radiation is emitted from the opposed side of the film;
• focusing the radiation from the point source on to the face of the radiation detector under test;
• driving a cathode-ray imaging means in synchronism with said raster;
• and
• applying the output response of the detector under test to said cathode-ray imaging means to control the intensity of its scanning beam in accordance with said detector output response.

A detector contour plotter for testing the response of a detector to a stimulus comprising:

• means for generating a raster in the form of a flying hot spot of infrared radiation on an infrared, phosphor screen, said raster generating means including a cathode-ray tube with a hidden electron gun, said phosphor screen having a window on the side opposed to said electron gun for transmitting the radiation in the infrared frequency band of the detector under test;
• focusing means for focusing an image of said raster on the detector under test;
• cathode-ray imaging means having a two-dimensional scan which is driven in synchronism with said raster;
• and
• means for applying the output response of the detector under test to said cathode-ray imaging means to control the intensity of its scanning beam in accordance with said detector output response.