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    • 4. 发明授权
    • Zoom lens and imaging device
    • 变焦镜头和成像装置
    • US08837056B2
    • 2014-09-16
    • US13552332
    • 2012-07-18
    • Masaki Maruyama
    • Masaki Maruyama
    • G02B15/14G02B15/173G02B27/64
    • G02B15/173G02B13/009G02B15/14G02B27/642
    • Disclosed herein is a zoom lens including a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having positive refractive power, and a fifth lens group having negative refractive power. The respective lens groups move in magnification variation from a wide angle end to a telephoto end. The fourth lens group is moved in optical axis direction to correct variation of an imaging position in association with magnification variation and perform correction of the imaging position in association with object distance change. Condition expression (1) is satisfied. 0.60
    • 这里公开了一种变焦透镜,包括具有正折光力的第一透镜组,具有负折光力的第二透镜组,具有正折光力的第三透镜组,具有正折光力的第四透镜组,以及具有正折射光焦度的第五透镜组 屈光力。 相应的镜头组从广角端到远摄端的放大变化中移动。 第四透镜组在光轴方向上移动以校正与放大变化相关联的成像位置的变化,并且与对象距离变化相关联地执行成像位置的校正。 满足条件表达式(1)。 0.60
    • 9. 发明授权
    • Analog fire sensor
    • 模拟火灾传感器
    • US4727359A
    • 1988-02-23
    • US845572
    • 1986-03-28
    • Sadataka YuchiMasaki Maruyama
    • Sadataka YuchiMasaki Maruyama
    • G08B17/00G08B26/00
    • G08B26/002
    • An analog fire detecting system in which a plurality of sensors produce analog data corresponding to a physical state such as temperature, smoke density, etc. relevant to a fire condition. The values of such analog data are compared with a predetermined threshold level, and if the threshold level is exceeded the analog data is transmitted to a central station in response to a polling signal therefrom. A CPU in the central station determines, from the analog data from the sensors, if there is a possibility of a fire and if so makes a predictive calculation of the remaining time until a fire condition will be reached. An alarm is given when such predicted time falls below a preset interval.
    • 一种模拟火灾探测系统,其中多个传感器产生对应于与火情相关的诸如温度,烟密度等物理状态的模拟数据。 这样的模拟数据的值与预定的阈值电平进行比较,如果超过阈值电平,则响应于来自其的查询信号将模拟数据发送到中心站。 中央站的CPU根据来自传感器的模拟数据确定是否存在火灾的可能性,如果这样做,则直到达到火情为止的剩余时间的预测计算。 当这种预测时间低于预设间隔时,给出警报。
    • 10. 发明授权
    • Fire detecting system
    • 火灾探测系统
    • US4300099A
    • 1981-11-10
    • US46633
    • 1979-06-07
    • Masaki Maruyama
    • Masaki Maruyama
    • A62C99/00G08B17/00G08B17/06G08B17/11G08C23/00
    • A62C99/00G08B17/00G08B17/11
    • A fire detecting system which is capable of successively controlling the forecasting of a fire, setting off alarms and activating fire-extinguishing equipment. The system includes a detector adapted to produce an electric impedance corresponding to an amount of a fire generated object present, such as smoke density, light or heat. An amplifier element has a controlling electrode connected to the detector so as to amplify the change in the electric impedance transmitted by the detector. A voltage-differential actuated element is connected at its one input terminal to the connection terminal of the amplifier element. To the reference input terminal of this voltage-differential actuated element, connected is a reference operation voltage changing means which is controlled by a time constant circuit which is adapted to determine the duration or time length of the output from the voltage-differential actuated element. By so arranging the circuit, a discontinuous or continuous output is produced by the voltage-differential actuated element which is, materially under the control of the reference operation voltage changing means. Therefore, the pattern of the output from the voltage-differential actuated element obtained in accordance with the potentials changed by the reference operation voltage changing means and corresponding to the predetermined amounts of the detected object, provides the information concerning a fire around the detector. The multi-stage information from the detector is used for conducting the control of successive operations of the equipment or functions disposed around the detector such as, for example, the forecasting of a fire, setting off an alarm and activating fire-extinguishing equipments.
    • 一种能够连续控制火灾预警,熄火报警和启动灭火设备的火灾探测系统。 该系统包括检测器,其适于产生对应于存在的火焰产生物体的量的电阻抗,例如烟雾密度,光或热。 放大器元件具有连接到检测器的控制电极,以便放大由检测器传输的电阻抗的变化。 电压差动作元件在其一个输入端子连接到放大器元件的连接端子。 连接的是这个电压差动作元件的参考输入端子,它是由时间常数电路控制的参考工作电压变化装置,该时间常数电路适于确定来自电压差动作元件的输出的持续时间或时间长度。 通过这样布置电路,由电压差动致动元件产生不连续或连续的输出,电压差动作元件在物理上处于基准操作电压改变装置的控制之下。 因此,根据由基准操作电压改变装置改变的电位而获得的电压差动作元件的输出的图形与检测对象的预定量相对应地提供关于检测器周围的火的信息。 来自检测器的多级信息用于对设置在检测器周围的设备或功能的连续操作进行控制,例如预测火灾,发出警报并激活灭火设备。