Optical waveguides – With optical coupler – Switch
Patent
1988-11-02
1991-10-01
Lee, John D.
Optical waveguides
With optical coupler
Switch
359230, G02B 624
Patent
active
050527770
ABSTRACT:
A bimorph using ultraviolet setting glue to laminate a piezoelectric film structure, having etched-back metalization patterns on the surfaces of the piezoelectric film. The bimorph is used in a bimorph light modulator including a substrate on which fiber optic input and output light guides are mounted. A gap between the light guides serve as an optical coupling. A bimorph is affixed to the substrate with a shutter attached to one end thereof and positioned within the gap for blocking the light coupling when the bimorph is in the unenergized state. When the bimorph is energized, it pulls the shutter out of the gap, thereby allowing light coupling. Top and bottom stops are used to limit the bimorph movement to damp resonant vibrations and improve on and off times. Viscous air damping is used to eliminate or minimize bounce of the top and bottom stops and to help damp resonant vibration. An array of the bimorphs may be utilized for providing a video or other display, with electrode connections being made to the bimorphs by means of conductors which contact the bimorph electrodes at small surface areas, with the conductors being attached to circuit boards carrying signals for operating the bimorph array. The optical fibers may be coupled to different light sources and filters to provide color images, and groups of optical fibers may be arranged to form pixels for providing a broad range of intensities.
REFERENCES:
patent: 4119979 (1978-10-01), Frank et al.
patent: 4198140 (1980-04-01), Frank et al.
patent: 4385798 (1983-05-01), Yevick
patent: 4415228 (1983-11-01), Stanley
patent: 4844577 (1989-07-01), Ninnis et al.
patent: 4867516 (1989-09-01), Baken
Toda, "Design of Piezoelectric Polymer Motional Devices with Various Structures", Transactions of the IECE of Japan, vol. E61, No. 7, Jul. 1978.
Toda and Osaka, "Application of PVF.sub.2 Biomorph Cantilever Elements to Display Devices", Proceedings of the S.I.D., vol. 19/2, Second Quarter 1978.
Toda and Osaka, "Large Area Electronically Controllable Shutter Array Using PVF.sub.2 Biomorph Vanes", Ferroelectrics, 1980, vol. 23, pp. 121-134.
Frank and Lee, "Piezoelectric Camera Shutter", Research Disclosure, 7 Sep. 1978.
Frank and Lee, "Piezoelectric Shutter Control for Camera", Research Disclosure, Jun. 1978.
Toda, "Voltage Induced Large Amplitude Bending Device/PVF.sub.2 Biomorph--Its Properties and Applications", Ferroelectrics, 1981, vol. 32, pp. 127-133.
Stephany and Gates, "Biomorph Optical Beam", Applied Optics, Feb. 1976, Bol 15, No. 2, pp. 307-308.
Keuning, "A Mixed Boundary Value Problem for an Infinite, Piezoceramic Bimorph", Acta Mechanica, 14, 199-217 (1972).
Toda and Osaka, "Electromotional Device Using PVF.sub.2 Multilayer Biomorph", Transactions of the IECE of Japan, vol. E61, No. 7, Jul. 1978.
Toda, Osaka, and Johnson, "A New Electromotional Device", RCA Engineer, 25-1, Jun./Jul. 1979, pp. 24-27.
Chatigny, "Piezo Film Yields Novel Transducers", Electronics Week, Aug. 6, 1984, pp. 74-77.
Toda, Osaka, Tosima, "Large Area Display Element Using PVF.sub.2 Biomorph with Double Support Structure", Ferroelectrics, 1980, vol. 23, pp. 115-120.
Carome and Koo, "PVF.sub.2 Phase Shifters and Modulators for Fiber Optic Sensor Systems", 1980, IEEE Triplesonics Symposium, pp. 710-712.
Bodegom Volker
Dyck Ralph
Miller Allen
Ninnis Ronald M.
Fish Ronald C.
Heartney Phan T.
Lee John D.
Sportsoft Systems, Inc.
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