Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent
1979-05-07
1982-01-19
Hartary, Joseph W.
Recorders
Performance of multiple functions of steam and gas engines
Pressure responsive element
350356, 350387, 358293, 346108, G01D 1514
Patent
active
043120040
ABSTRACT:
Electric signals are recorded on a recording medium having a light sensitivity extending to wavelengths shorter than 475 nm, with an array of electrically switched lanthanum modified lead zirconate titanate (PLZT) light gates located between a light polarizer and a complementary light analyzer. The light gates are illuminated through the polarizer with light whose wavelength essentially is longer than 475 nm. Such light is selectively gated through electrically switched light gates through the analyzer and to the recording medium having a light sensitivity extending to wavelengths shorter than 475 nm. Information recordings may be made in this manner over extended periods of time without the typical performance degradation through photoinduced birefringence observed with conventionalPLZT electrooptic shutters.
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Micheron et al.; Holographic Storage in Quadratic PLZT Ceramics, Journal of American Ceramic Society, vol. 57, No. 7, pp. 306-308.
Micheron et al.; Optical Recording of Digital Data in PLZT Ceramics, applied Physics Letters, vol. 24, No. 12, Jun. 1974, pp. 605-607.
Rouchon et al.; Photoinduced Caanbes of Refractive Index in PLZT Ceramics; Ferroelectrics; vol. 11, 1976, pp. 389-392.
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Connor Robert J.
Garland Thomas H.
Samek Norbert E.
Bell & Howell Company
Hartary Joseph W.
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