PRASEODYMIUM DOPED WAVEGUIDE LASERS
    2.
    发明申请
    PRASEODYMIUM DOPED WAVEGUIDE LASERS 审中-公开
    PRASEODYMIUM DOPED波长激光器

    公开(公告)号:WO1992020125A1

    公开(公告)日:1992-11-12

    申请号:PCT/GB1992000766

    申请日:1992-04-24

    Abstract: The invention is based on the discovery that under certain conditions lasing at room temperature can be achieved in a Pr -doped fluorozirconate fibre pumped in the infrared at 1.01 mu m and 835nm, the lasing taking place in the blue (491nm), green (520nm), orange (605nm) and red (635nm and 715nm). One laser comprises a length of Pr -doped potical waveguide such as a fibre, and means for exciting the Pr ions to an energy level in the band ( P2, I6, P1, P0), in which the Pr concentration is in the range substantially 50 ppm to substantially 10,000 ppm (by weight). The Pr concentration is preferably in the range substantially 200 ppm to substantially 2,000 ppm (by weight). The optical fibre is preferably a fluorozirconate fibre doped at the foregoing concentrations with Pr ions. The fibre preferably comprises a doped core clad with a further glass. The excitation means is preferably arranged to excite the Pr ions from the H4 level, and this is preferably achieved by upconversion by way of the G4 level, but excitation may be achieved by transfer of energy from a co-dopant.

    Abstract translation: 本发明基于以下发现:在某些条件下,在1.01μm和835nm的红外线中掺杂的掺杂Pr 3+的氟锆酸盐纤维中可以实现在室温下的激光,激光发生在蓝色(491nm) ,绿色(520nm),橙色(605nm)和红色(635nm和715nm)。 一个激光器包括长度为Pr 3+的掺杂的波导如光纤,以及用于将Pr 3+离子激发到带中的能级的装置(<3> P2, I6, 3> P1,<3> P0),其中Pr <3+>浓度在基本上为50ppm至基本上为10,000ppm(重量比)的范围内。 Pr 3+浓度优选在基本上200ppm至基本上2000ppm(重量)的范围内。 光纤优选为以上述浓度掺杂有Pr 3+离子的氟锆酸盐纤维。 纤维优选地包括用另外的玻璃包覆的掺杂芯。 激发装置优选地布置成从3 H 4水平激发Pr 3+离子,并且这优选通过G4水平上转换来实现,但是可以通过将能量从 共掺杂剂。

    AEROFOILS FOR FLOATING VESSELS
    4.
    发明申请
    AEROFOILS FOR FLOATING VESSELS 审中-公开
    用于浮动船的AEROFOILS

    公开(公告)号:WO1986004035A1

    公开(公告)日:1986-07-17

    申请号:PCT/GB1986000010

    申请日:1986-01-07

    CPC classification number: B63H9/0607

    Abstract: An aerofoil structure for wind propulsion of a ship or boat characterised by a carrier angularly movable about an upright axis on the ship or boat, a forward aerofoil set comprising at least one main upright aerofoil member, a rear aerofoil set comprising at least one upright aerofoil member, there being at least three aerofoil members altogether, both sets being supported directly or indirectly on the carrier, at least one of the sets being movable relative to the carrier between first and second positions, such that in each said position the forward end of the member, or at least one member, of the rear set is positioned adjacent the rear end(s) of at least one member, or the member, of the forward set, so that at least one cambered aerofoil is defined, the aerofoil(s) so defined in the first position being cambered in the opposite sense, and being defined by different members of at least one of the sets, from the aerofoils so defined in the second position.

    Abstract translation: 一种用于船或船的风力推进的机翼结构,其特征在于能够围绕船或船上的直立轴线成角度地移动的载体,包括至少一个主立式翼型构件的前翼型组,包括至少一个直立翼型的后机翼组 至少有三个机翼构件,两个组件直接或间接地支撑在承载件上,所述组件中的至少一个可在第一和第二位置之间相对于承载件移动,使得在每个所述位置中, 后组的构件或至少一个构件定位成与正向组的至少一个构件或构件的后端相邻,使得至少一个弧形翼型被限定,机翼( s),其在第一位置被限定在相反的意义上,并且由至少一个组中的至少一个组件的不同构件与在第二位置中限定的翼型体限定。

    IMPROVEMENTS IN OR RELATING TO FLUID FLOW OBTURATING COMPONENTS
    8.
    发明申请
    IMPROVEMENTS IN OR RELATING TO FLUID FLOW OBTURATING COMPONENTS 审中-公开
    对流体流动元件的改进或相关

    公开(公告)号:WO1993001436A2

    公开(公告)日:1993-01-21

    申请号:PCT/GB1992001224

    申请日:1992-07-06

    CPC classification number: F16J15/3492 F16K37/00 F16K37/0058

    Abstract: With reference to Figure 3, a pair of seats (1) for co-operation with a ball-shaped valve member (2) (Figure 4) in forming a ball valve unit (20) is shown, each seat (1) comprising a cup-shaped component of plastics material with a seating surface (3). Each valve seat (1) is provided with means (10) forming a signal path incorporated in a signal system (11), whereby interference with the signal path as a result of wear may be detected. The means (10) comprise a tortuously-disposed optical fibre (12) embedded close to surface (3), within the valve seat (1). One end of the fibre (12) is connected to a light source (13) and the other end to a light receiver (14). The signal system (11) comprises the fibre (12), the light source (13), light receiver (14), connections (15, 16) and alarm initiator (17) with a warning light (18). In operation, the source (13) transmits light signals through the optical fibre (12) to be collected by the receiver (14). In the event that undue wear of the valve seat surface (3) has taken place, (whereby leakage past the valve member (2) will occur), the wear will fracture or damage the optical fibre (12) sufficiently to interfere with the passage of light signals therethrough. This interference will be sensed by the alarm initiator (17) whereby a visible warning signal will be emitted by the light (18).

    Abstract translation: 参考图3,示出了在形成球阀单元(20)中与球形阀构件(2)(图4)相配合的一对座(1),每个座(1)包括 具有座面(3)的塑料材料的杯形部件。 每个阀座(1)设置有形成信号系统(11)中的信号通道的装置(10),由此可以检测到由于磨损而引起的对信号路径的干扰。 装置(10)包括在阀座(1)内靠近表面(3)嵌入的弯曲布置的光纤(12)。 光纤(12)的一端连接到光源(13),另一端连接到光接收器(14)。 信号系统(11)包括具有警告灯(18)的光纤(12),光源(13),光接收器(14),连接(15,16)和报警启动器(17)。 在操作中,源(13)通过光纤(12)传输光信号,以由接收器(14)收集。 在阀座表面(3)发生过度磨损的情况下(由此会发生通过阀构件(2)的泄漏),磨损会使光纤(12)破裂或损坏,从而干扰通道 的光信号通过。 这种干扰将由报警启动器(17)感测,由此光(18)将发出可见的警告信号。

    A DATA PROCESSING DEVICE
    10.
    发明申请
    A DATA PROCESSING DEVICE 审中-公开
    数据处理设备

    公开(公告)号:WO1987001485A1

    公开(公告)日:1987-03-12

    申请号:PCT/GB1986000514

    申请日:1986-08-29

    CPC classification number: G06F8/45 G06F15/17343

    Abstract: The device (10) comprises a large number of transputers T1 to T16 (only T1 and T16 are shown), Tmem, Tx, Ty, Tz, Tt. These are divided into a set of working transputers T1 to T16, and a set of interface transputers Tx, Ty, Tz, Tt providing input/output facilities for the device, both sets being under the control of a transputer Tmem. The transputer Tmem receives instructions for the device and breaks them down into programs for parallel processing by the transputers T1 to T16. These transputers will normally need to communicate, and the necessary connections are provided by a switch network (12), under the control of the transputer Tmem. The programs are so allocated to the transputers T1 to T16 and the switch network (12) is so arranged that direct connections are provided between any transputers which must communicate for the execution of their respective programs. Other connection arrangements are described, including a universal circuit capable of connecting the transputers T1 to T16 to form any theoretically possible network.

Patent Agency Ranking