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    • 16. 发明授权
    • Apparatus for optically reading signal information recorded on a
reflective record medium surface
    • 用于光学读取记录在反射记录介质表面上的信号信息的装置
    • US4100577A
    • 1978-07-11
    • US743010
    • 1976-11-18
    • Yohsuke NaruseMikio Sugiki
    • Yohsuke NaruseMikio Sugiki
    • H04N5/85G02B7/28G11B7/09G11B7/12H04N5/76
    • G11B7/12G11B7/0917G11B2007/0924
    • An apparatus for optically reading or playing-back video or other signal information recorded as pits or other variations in a record track on a reflective record medium surface employs a polarized beam splitter by which a laser light beam is split into first and second polarized light beams which are respectively polarized in different polarization directions. The first polarized light beam is directed in a respective optical path so as to be projected against the record track on the record medium surface and reflected from the latter to a photo-detector or -sensor developing an output representing the recorded signal information, while the second polarized light beam is directed, in an optical path spaced from that of the first polarized light beam, so as to be projected against the record medium surface and reflected from the latter to control a servo-mechanism by which, for example, proper focusing or positioning of the first polarized light beam in respect to the record track is maintained.
    • 用于光学读取或重放记录为反射记录介质表面上的记录轨道上的凹坑或其他变化的视频或其他信号信息的装置采用偏振分束器,通过该偏振分束器将激光光束分成第一和第二偏振光束 它们分别在不同的偏振方向上极化。 第一偏振光束被引导到相应的光路中,以便相对于记录介质表面上的记录轨道被投射并从后者反射到光检测器或传感器,以形成表示记录信号信息的输出,同时 第二偏振光束以与第一偏振光束间隔开的光路中被引导以相对于记录介质表面突出并被反射,以控制伺服机构,通过该伺服机构例如适当的聚焦 或者保持相对于记录轨道的第一偏振光束的定位。
    • 19. 发明授权
    • Two-axis mirror control apparatus
    • 双轴镜控制装置
    • US4175832A
    • 1979-11-27
    • US881118
    • 1978-02-24
    • Nobutomo UmekiMikio Sugiki
    • Nobutomo UmekiMikio Sugiki
    • H04N5/85G02B7/182G02B26/10G11B7/08G11B7/085G11B7/09G02B27/17
    • G11B7/08582G02B7/1821G11B7/08G11B7/0925
    • A mirror is held against a pointed supporting member by a magnetic field of attraction between a first magnetic assembly attached to the mirror and a second magnetic assembly spaced from the first assembly and directly or indirectly attached to the supporting member. The mirror can pivot in two directions in response to magnetic control fields produced by coils around the first magnetic assembly but is prevented by interlocking magnetic fields from rotating on an axis in a third direction. The interlocking fields may be produced by assymmetrically located magnetic members attached to the first and second magnetic assemblies or by dividing both the first and second magnetic assemblies into similar oppositely polarized sectors.
    • 反射镜通过附接到反射镜的第一磁性组件与与第一组件间隔开并直接或间接地附接到支撑构件的第二磁性组件之间的吸引磁场而抵靠尖锐的支撑构件保持。 响应于围绕第一磁性组件的线圈产生的磁控制场,反射镜可以在两个方向上枢转,但是通过互锁磁场在第三方向上在轴上旋转来防止镜子。 互锁场可以通过附接到第一和第二磁性组件的不对称定位的磁性构件或通过将第一和第二磁性组件分成相似的相对偏振的扇区来产生。