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    • 2. 发明授权
    • Switching of thermochromic and pressure sensitive films with surface
acoustic waves
    • 用表面声波切换热变色和压敏薄膜
    • US4236156A
    • 1980-11-25
    • US32448
    • 1979-04-23
    • Dayton D. Eden
    • Dayton D. Eden
    • G02F1/01G02F1/17G09F9/00
    • G02F1/0147G02F1/178
    • An apparatus for "fast erase" of thermochromic information displays is provided. A piezoelectric substrate (10) has a thin film (18) of vanadium dioxide deposited on the surface thereof. The film undergoes marked increases in reflectance at any region thereof experiencing thermal heating in excess of its predetermined transition temperature. An ultrasonic surface acoustic wave transducer (11) is provided which includes a pair of electrodes (12, 14) spaced apart in substantially parallel relation on the surface of the substrate (10) such that application of an RF signal across the electrodes (12, 14) causes deformation of the substrate to generate surface acoustic waves on the surface thereof and in the film to counteract built-in strains in the film to erase images written into the film.A solid state information display using pressure sensitive material is also disclosed. A thin film of samarium sulphide (30) is deposited on the surface of a piezoelectric substrate (10) such as lithium niobate. The film undergoes marked increases in reflectance at any region thereof subjected to a pressure in excess of a predetermined threshold pressure. Three surface acoustic wave transducers (34, 36, 38) are provided on the substrate (10) positioned relative to the film such that eastwardly, westwardly and northwardly traveling surface waves are produced in the film. A video signal generator (40) is provided for each of the transducers with delay units (42) for launching pulses at preselected times in the film such that a point of pressure in excess of the threshold pressure can be selectively created to increase the reflectance of the film at that point.
    • 提供了一种用于“快速擦除”热致变色信息显示器的设备。 压电基板(10)具有沉积在其表面上的二氧化钒薄膜(18)。 在经历超过其预定转变温度的热加热的任何区域,该膜的反射率显着增加。 提供一种超声表面声波换能器(11),其包括在基板(10)的表面上基本上平行地间隔开的一对电极(12,14),使得RF信号跨越电极(12, 14)导致基板的变形,以在其表面和膜中产生表面声波,以抵消胶片中的内置应变以擦除写入胶片中的图像。 还公开了使用压敏材料的固态信息显示。 锑硫化物薄膜(30)沉积在诸如铌酸锂的压电基片(10)的表面上。 在压力超过预定阈值压力的任何区域,膜的反射率显着增加。 三个表面声波换能器(34,36,38)设置在相对于胶片定位的基板(10)上,使得在胶片中产生向东,向外和向北行进的表面波。 为每个换能器提供视频信号发生器(40),其具有延迟单元(42),用于在膜中预选的时间发射脉冲,使得可以选择性地创建超过阈值压力的压力点以增加反射率 那个时候的电影。
    • 4. 发明授权
    • Variable lightwave functional circuit and variable lightwave functional apparatus
    • 可变光波功能电路和可变光波功能器件
    • US07231104B2
    • 2007-06-12
    • US11439219
    • 2006-05-24
    • Shinji Yamashita
    • Shinji Yamashita
    • G02B6/00
    • G02B6/274G02B6/024G02B6/2713G02B6/2766G02B6/29302G02B6/29395G02F1/0128G02F1/0134G02F1/0136G02F1/178G02F2203/15H01S3/005H01S3/0064H01S3/0407H01S3/042H01S3/067H01S3/06704H01S3/06712H01S3/06791H01S3/08086H01S3/0941H01S3/1053H01S3/106H01S3/1067H01S3/1068H01S3/1608
    • The system of a variable lightwave functional apparatus comprising: an optical amplifier for outputting wavelength multiplexed light containing a plurality of pulses having a first wavelength interval; a polarization branching/coupling device having a first port to a third port, for branching output from said optical amplifier, which is entered from said first port into the polarization branching/coupling device, to both said second port and said third port; a coupler arranged at the second port of said polarization branching/coupling device; and said variable lightwave functional circuit, and arranged between said third port of said polarization branching/coupling device and said coupler; wherein: said wavelength multiplexed light containing said plural pulses having said first wavelength interval is converted into wavelength multiplexed light containing a plurality of pulses having a second wavelength interval in response to lateral pressure applied to said polarization-maintaining optical fiber, and said coupler outputs said converted wavelength multiplexed light.
    • 一种可变光波功能装置的系统,包括:光放大器,用于输出包含具有第一波长间隔的多个脉冲的波长复用光; 具有第一端口到第三端口的偏振分支/耦合装置,用于将从所述第一端口进入偏振分支/耦合装置的所述光放大器的输出分支到所述第二端口和所述第三端口; 耦合器,布置在所述偏振分支/耦合装置的第二端口处; 和所述可变光波功能电路,并且布置在所述极化分支/耦合装置的所述第三端口和所述耦合器之间; 其中:响应于施加到所述偏振保持光纤的横向压力,将包含具有所述第一波长间隔的所述多个脉冲的所述波长多路复用光转换成包含具有第二波长间隔的多个脉冲的波长多路复用光,并且所述耦合器输出所述 转换波长复用光。