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    • 2. 发明授权
    • Method of producing optically transparent ceramics
    • 光学透明陶瓷的制造方法
    • US4019915A
    • 1977-04-26
    • US516498
    • 1974-10-21
    • Katsuki MiyauchiIwao MatsuyamaGyozo Toda
    • Katsuki MiyauchiIwao MatsuyamaGyozo Toda
    • C04B35/46C04B35/48C04B35/50C04B35/51G02F1/00
    • G02F1/0027C04B35/46C04B35/48C04B35/50C04B35/51
    • There is provided a method of producing a ceramic represented by the general formula of ABO.sub.3, wherein A includes Pb and at least one element selected from the group consisting of Ba and Sr and B is either of Zr or both of Zr and Ti, by hot-pressing a complex oxide obtained by calcining the mixture of the oxides of A and B characterized by that a solid solution of the oxides of Ba and/or Sr and the oxide of the element constituting B, such as BaTiO.sub.3, SrZrO.sub.3 or (Ba, Sr)ZrO.sub.3, is used as the starting oxides of Ba and/or Sr, and that the starting material contains PbO in an amount of 3 - 20 mol% in excess of that calculated for the objective composition of the final product. Ceramics produced by the method of the present invention have ferroelectric properties and are optically transparent.
    • 提供了一种制备由通式ABO 3表示的陶瓷的方法,其中A包括Pb和选自Ba和Sr中的至少一种元素,B是Zr或Zr或Ti中的任一种,通过热 压制通过煅烧A和B的氧化物的混合物获得的复合氧化物,其特征在于Ba和/或Sr的氧化物和构成B的元素的氧化物如BaTiO 3,SrZrO 3或(Ba, Sr)ZrO 3用作Ba和/或Sr的起始氧化物,并且起始材料含有超过为最终产物的目标组成计算的量的3-20mol%的PbO。 通过本发明的方法生产的陶瓷具有铁电性能并且是光学透明的。
    • 7. 发明授权
    • Light deflecting system with rotating mirror
    • 具有旋转镜的光偏转系统
    • US4934781A
    • 1990-06-19
    • US304554
    • 1989-02-01
    • Shigeo KatoSusumu SaitoYasuhide MatsumuraGyozo Toda
    • Shigeo KatoSusumu SaitoYasuhide MatsumuraGyozo Toda
    • F16C17/02F16C27/02G02B26/12H02K5/16H02K7/09
    • F16C27/02F16C17/028G02B26/121H02K5/1672H02K7/09
    • The rotating mirror light deflecting system employs a non-circular dynamic gas bearing providing dynamic pressure to radially support the shaft. The bearing is provided internally with a multiplicity of grooves or embankments whereby dynamic gas pressure is increased to enhance rigidity. The bearing radially moves as a whole with damping according to a movement of the shaft, thus permitting nondestructive movement of the shaft and absorption of the resonant energy of the shaft. The shaft and the bearing will not come in contact with each other, and oscillation energy of the shaft is absorbed or dissipated by an external viscous or hysteresis resistance of the bearing therefore resonance oscillation is attenuated on the instant it occurs. Since the resonance point is high due to bearing surface rigidity, whirling is hard to arise, however, if whirling does arise, then the bearing and the shaft move together to attenuate oscillation energy of the shaft, therefore oscillation and whirling is put down immediately.
    • 旋转镜光偏转系统使用提供动态压力的非圆形动态气体轴承来径向支撑轴。 轴承内部设置有多个槽或堤,从而增加动态气体压力以增强刚度。 根据轴的运动,轴承整体上具有阻尼的径向运动,从而允许轴的非破坏性运动和轴的共振能量的吸收。 轴和轴承不会彼此接触,并且轴的振动能量被轴承的外部粘性或磁滞阻力吸收或消散,因此谐振振荡在其发生的瞬间被衰减。 由于共振点由于轴承表面的刚度而高,因此很难产生旋转,但如果发生旋转,则轴承和轴一起移动,以减弱轴的振荡能量,因此立即放下振动和旋转。