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    • 3. 发明申请
    • OPTICAL INTERFERENCE ANGULAR VELOCITY METER
    • 光学干涉角速度计
    • WO1992004597A1
    • 1992-03-19
    • PCT/JP1991001149
    • 1991-08-29
    • JAPAN AVIATION ELECTRONICS INDUSTRY LIMITEDASAMI, Eiichi
    • JAPAN AVIATION ELECTRONICS INDUSTRY LIMITED
    • G01C19/72
    • G01C19/72G01C19/726
    • A ray of light from a light source (11) passes through a light branching device (25) having a branching ratio of 1:4 and further through a polarizer (13) and is incident into another light branching device (14). Two branched rays of light from the branching device (14) pass through phase modulators (15, 26) at both ends of an optical fiber coil (16) and are incident as right-turn light and left-turn light, respectively. The ray of light is phase-modulated by a modulating signal Ζ (2τfmt) in the phase modulator (15) and another ray of light is phase-modulated by a modulating signal Ζ (2πfmt - 2πτfm) (where τ : propagation time of the optical fiber coil (16)) in the phase modulator (26). Both rays of light passing through the optical fiber coil (16) enter the light branching device (14) and interfere with each other, and the interference ray of light is supplied to an analyzer (21) through the branching device (25). The output of the analyzer (21) is subjected to synchronous detection by the modulating signal. Therefore, the angular velocity applied around the axis of the optical fiber coil (16) is detected. The frequency fm component is removed from the intensity-modulated component occuring in the phase modulators (15, 26), the error of a bias value of the optical interference angular velocity meter is eliminated, and zero-point stability of the bias can be improved.
    • 6. 发明专利
    • PLUG AND RECEPTACLE OF A MICROSTRIP LINE CONNECTOR
    • CA2054592A1
    • 1992-05-14
    • CA2054592
    • 1991-10-31
    • JAPAN AVIATION ELECTRONICS INDUSTRY LIMITEDNEC CORPORATION
    • SUZUKI, TAKAOUESUGI, HIROSHITAMURA, YOSHIHARUHIRASAWA, NAOKIMATSUMOTO, HIROFUMI
    • H01R24/00H01P1/04H01P3/08H01P5/08
    • In a plug (100) and a receptacle of a microstrip line connector, the plug has a rectangular parallelpipedic insulating support block (130), a signal contact (120) projecting upward from the center of the insulating support block and a pair of L-angle brackets (115,116) projecting out upward from both ends of the insulating support block, the pair of brackets being connected to opposite ends of a coupling plate portion (111) provided along the side wall surface of the insulating support block. The coupling plate portion has at the center of its lower marginal edge a recess (112) formed astride a signal conductor (303) of a microstrip line (301) provided on a printed circuit board (300). The receptacle is made up of a rectangular parallelpipedic insulating housing (210) having three contact housing rooms defined by two partition walls (216,217), a signal socket contact (230) housed in the central contact housing room, a U-shaped ground socket contact (220) having two contact portions housed in the both side contact housing rooms, and a shield cover (240) mounted on the insulating housing in a manner to cover almost all over its back and hold its top and bottom panel portions. The insulating housing has a contact introducing hole (212A) made in its front panel portion centrally thereof and communicating with the central contact housing room, for receiving the signal contact of the mating plug. The insulating housing has slots (211) made in its both side panel portions in the front-to-back direction and communicating with the both side contact housing rooms, for receiving opposed edges of the pair of L-angle brackets.