公开(公告)号：US5371430A

公开(公告)日：1994-12-06

申请号：US57500

申请日：1993-05-06

申请人： Masuji Sato ,  Noboru Wakatsuki ,  Masanori Ueda ,  Hiroshi Hasegawa

发明人： Masuji Sato ,  Noboru Wakatsuki ,  Masanori Ueda ,  Hiroshi Hasegawa

IPC分类号： H01L41/107 ,  H01L41/08

CPC分类号： H01L41/107

摘要： A piezoelectric transformer comprises a piezoelectric substrate carrying thereon an input electrode structure provided on an upper major surface of the piezoelectric substrate for receiving an a.c. voltage for causing an excitation of an elastic wave in the substrate such that the elastic wave propagates through the substrate in a longitudinal direction, an output electrode structure provided on a lower major surface of the piezoelectric substrate for producing an output a.c. voltage by converting the elastic wave into an electric voltage, wherein the input electrode structure and the output electrode structure have a periodical structure in the longitudinal direction with a pitch corresponding to a wavelength of the elastic wave, and wherein at least one of the first and second electrode structures extend in the longitudinal direction from the first longitudinal edge to the second longitudinal edge substantially continuously.

摘要翻译： 一种压电变压器包括一个压电基板，其上带有一个输入电极结构，该输入电极结构设置在压电基板的上主表面上，用于接收一个直流电压。 使弹性波沿着纵向传播通过基板的输出电压结构的输出电极结构的输出电压结构的输出电极结构。 通过将弹性波转换成电压，其中，所述输入电极结构和所述输出电极结构在纵向方向上具有对应于所述弹性波的波长的间距的周期性结构，并且其中，所述第一和 第二电极结构基本上连续地从第一纵向边缘延伸到第二纵向边缘。

公开(公告)号：US5424602A

公开(公告)日：1995-06-13

申请号：US111741

申请日：1993-08-25

申请人： Masuji Sato ,  Noboru Wakatsuki ,  Masanori Ueda ,  Hiroshi Hasegawa

发明人： Masuji Sato ,  Noboru Wakatsuki ,  Masanori Ueda ,  Hiroshi Hasegawa

IPC分类号： H01L41/107 ,  H01L41/08

CPC分类号： H01L41/107

摘要： A piezoelectric transformer comprises a piezoelectric substrate extending in a first direction, a first electrode structure provided on the substrate for exciting an elastic wave propagating through the substrate in the first direction as a result of the piezoelectric transverse effect, and a second electrode structure provided on the substrate for converting the elastic wave to an electric voltage, wherein the first electrode group occupies a first area on the substrate while the second electrode group occupies a second area on the substrate.

摘要翻译： 压电变压器包括沿第一方向延伸的压电基片，设置在基板上的第一电极结构，用于激发由于压电横向效应而在第一方向上传播通过基板的弹性波;以及第二电极结构， 用于将弹性波转换成电压的基板，其中第一电极组占据基板上的第一区域，而第二电极组占据基板上的第二区域。

公开(公告)号：US5251049A

公开(公告)日：1993-10-05

申请号：US717066

申请日：1991-06-18

申请人： Masuji Sato ,  Akira Tanaka ,  Noboru Wakatsuki

发明人： Masuji Sato ,  Akira Tanaka ,  Noboru Wakatsuki

IPC分类号： G02F1/137 ,  G02F1/139 ,  G02F1/133

CPC分类号： G02F1/1393 ,  G02F2203/02

摘要： A reflection type liquid crystal apparatus comprising a liquid crystal panel (26) composed of a pair of first and second opposed plates (30, 32) for accommodating a liquid crystal (34) therebetween. A reflecting layer (28) is provided in the inner surface of the second plate, and the first plate is transparent. A common electrode (36) is provided in the first plate, and picture electrodes (38) are located in the second plate. A beam splitter (24) is located in front of the liquid crystal panel (26) for supplying polarized light to the first plate and for selectively transmitting polarized light emerging from the liquid crystal panel (24). The liquid crystal (34) comprises a nematic liquid crystal material having a positive birefringence and arranged in a homogeneous orientation with a constant director (n). This arrangement being such that incident polarized light is propagated in the liquid crystal in a double refraction mode with a first birefringence value and the emerging polarized light thereof is substantially transmitted by the second polarizer means (24) when a voltage is not applied to the liquid crystal; and incident polarized light is propagated in the liquid crystal in a double refraction mode with a second birefringence value smaller than the first birefringence value and the emerging polarized light thereof is not substantially transmitted by the second polarizer means (24) when a voltage is applied to the liquid crystal.

公开(公告)号：US5229680A

公开(公告)日：1993-07-20

申请号：US761049

申请日：1991-09-18

申请人： Masuji Sato ,  Noboru Wakatsuki ,  Kiyoshi Nakamura ,  Yoshinori Adachi

发明人： Masuji Sato ,  Noboru Wakatsuki ,  Kiyoshi Nakamura ,  Yoshinori Adachi

IPC分类号： H01L41/107

CPC分类号： H01L41/107

摘要： A piezoelectric transformer includes a substrate of piezoelectric material, preferably a single crystal of LiNbO.sub.3. The substrate is uniformly polarized in a selected direction thereof and vibrated in a direction of the length thereof. An input voltage is applied across both sides of a portion of the substrate in a direction of the thickness thereof and thus excites a vibration by way of piezoelectric effect. Thereby another voltage is caused in the direction of the thickness of the substrate in a portion other than the portion to which the input voltage is applied, and taken out as an output voltage. As a result, it is possible to decrease the output impedance to obtain a large load current and thus fully heighten a step-up ratio of the piezoelectric transformer.

公开(公告)号：US4471384A

公开(公告)日：1984-09-11

申请号：US392174

申请日：1982-06-25

申请人： Masuji Sato ,  Fumiaki Yamada ,  Toshiaki Naka

发明人： Masuji Sato ,  Fumiaki Yamada ,  Toshiaki Naka

IPC分类号： H04N1/031 ,  H04N1/12

CPC分类号： H04N1/0318 ,  H04N2201/03112

摘要： An optical reader which comprises: at least one yellow LED array as a light source for lighting original material; an optical lens or fibers for guiding the light reflected from the original material; and an image sensor which changes the reflected light to signal waves. In embodiments of the reader, the light source includes both a yellow LED array and a green LED array with colored filters either provided over the LED arrays or on the optical lens or fibers.

摘要翻译： 一种光学阅读器，包括：至少一个黄色LED阵列作为照明原始材料的光源; 用于引导从原始材料反射的光的光学透镜或光纤; 以及将反射光改变为信号波的图像传感器。 在读取器的实施例中，光源包括黄色LED阵列和具有设置在LED阵列上或光学透镜或光纤上的彩色滤光片的绿色LED阵列。