Differential pressure transmitter
    93.
    发明授权
    Differential pressure transmitter 失效
    差压变送器

    公开(公告)号:US5012677A

    公开(公告)日:1991-05-07

    申请号:US275580

    申请日:1988-11-23

    摘要: A differential pressure transmitter is an improvement over the drawbacks of conventional apparatuses and provides a differential pressure transmitter which compensates for adverse effects of a static pressure by using a static pressure detecting piezoresistive gauge. The transmitter includes a highly sensitive static pressure sensor with high outputs, and a composite sensor with small crosstalk between the static pressure sensor and a differential pressure sensor. The differential pressure transmitter is constructed of semiconductor sensor substrate and a fixed mount on which the sensor substrate is securely mounted; whereby the differential pressure of a fluid is detected by utilizing the difference in Young's modulus between the sensor substrate and the mount. The sensor substrate is processed on one side or on both sides to make a part of the sensor substrate thinner than the surrounding parts and thereby cause a peak stress due to a static pressure load to occur at the thin part, and a change in resistance of a semiconductor piezoresistive gauge formed at that thin portion is detected.

    摘要翻译: 差压变送器是对常规设备的缺点的改进,并且提供了一种通过使用静压检测压阻式压力补偿静压的不利影响的差压变送器。 变送器包括具有高输出的高灵敏度静压传感器,以及静压传感器和压差传感器之间具有小串扰的复合传感器。 差压变送器由半导体传感器基板和传感器基板固定在其上的固定支架构成; 由此通过利用传感器基板和安装座之间的杨氏模量的差异来检测流体的压差。 传感器基板在一侧或两侧进行处理,使得传感器基板的一部分比周围部分薄,从而在薄部分产生由于静压力引起的峰值应力,并且电阻变化 检测在该薄部分处形成的半导体压阻计。

    Multi-functional sensor
    94.
    发明授权
    Multi-functional sensor 失效
    多功能传感器

    公开(公告)号:US4986127A

    公开(公告)日:1991-01-22

    申请号:US333246

    申请日:1989-04-05

    摘要: Multi-functional sensor comprises a support base made from borosilicate, a diaphragm with a E-shaped section secured to the base, the diaphragm being made from single crystalline silicon, principal plane thereof being oriented to be a crystalline plane (110), a differential pressure sensor having p-doped piezoresistor elements formed in the principal plane of the diaphragm at a thin wall portion of the E-shaped sectional diaphragm, each element being arranged along a crystal axis , a static pressure sensor having p-doped piezoresistor elements formed in the principal plane at an outer peripheral thick wall portion of the E-shaped sectional diaphragm, each element being arranged along the crystal axis , and a temperature sensor having a p-doped piezoresistor element formed in the principal plane at the outer peripheral thick wall portion of the E-shaped sectional diaphragm, the element being arranged along the crystal axis . In the multi-functional sensor thus constructed, deviation of the output signal from the differential pressure sensor due to the influence of the temperature and static pressure can be removed easily to obtain the correct signal.

    摘要翻译: 多功能传感器包括由硼硅酸盐制成的支撑基座,具有固定到基部的E形截面的隔膜,隔膜由单晶硅制成,其主面被定向为晶面(110),差动 压电传感器,其具有在E形截面光阑的薄壁部分处形成在膜片的主平面中的p掺杂的压电电阻元件,每个元件沿着晶轴<111>布置,静压传感器具有p掺杂的压电电阻 在E形截面光阑的外周厚壁部分的主平面上形成的元件,每个元件沿着晶轴<111>布置,并且具有在主平面上形成的p掺杂的压电电阻元件的温度传感器 E形截面膜片的外周厚壁部分,该元件沿着晶轴<100>排列。 在这样构成的多功能传感器中,由于温度和静压的影响,输出信号与差压传感器的偏差可以容易地消除,从而获得正确的信号。

    Optical head with optical beam control using acoustic wave device
    96.
    发明授权
    Optical head with optical beam control using acoustic wave device 失效
    光头用光束控制使用声波装置

    公开(公告)号:US4862440A

    公开(公告)日:1989-08-29

    申请号:US098969

    申请日:1987-09-09

    IPC分类号: G11B7/08 G11B7/085 G11B7/09

    摘要: An optical head is disclosed, in which a plate-shaped optical wave guide comprises an optical system including a collimator lens, a beam splitter and an objective lens; a laser light source for emitting a laser light in the form of a light beam which is to be impinged on an optical recording medium; and electro-acoustic transducers are disposed between the beam splitter and the objective lens, the transducers being adapted to be driven by the outer electrical signal for producing surface acoustic waves in the optical wave guide, thereby establishing a condensation and rarefaction distribution in refractive index in the optical wave guide which distribution influences the direction of transmission and the degree of focusing of the light beam passing therethrough so that regulation of the tracking and the focal length can be effected without any mechanical movements.

    摘要翻译: 公开了一种光学头,其中板状光波导包括包括准直透镜,分束器和物镜的光学系统; 用于发射将要照射在光学记录介质上的光束形式的激光的激光源; 并且电声换能器设置在分束器和物镜之间,换能器适于由外部电信号驱动,以在光波导中产生表面声波,由此在折射率中建立冷凝和稀疏分布 分布影响透射方向的光波导和通过其的光束的聚焦程度,从而可以在没有任何机械运动的情况下实现跟踪调节和焦距。

    Image projection system
    98.
    发明授权
    Image projection system 失效
    图像投影系统

    公开(公告)号:US4106866A

    公开(公告)日:1978-08-15

    申请号:US597088

    申请日:1975-07-18

    摘要: An apparatus having a projection lens through which an image produced by a Braun or cathode ray tube or other image reproducing device is projected onto a viewing screen is further provided with a source or sources of colored light, preferably of at least one hue different from that of the projected image, and which is superimposed on the image projected onto the viewing screen. The source or sources of colored light may directly irradiate the entire area of the viewing screen with such colored light, or the panel of the image reproducing device on which the image is produced may be irradiated with the colored light.

    摘要翻译: 具有投影透镜的设备通过其将由Braun或阴极射线管或其他图像再现装置产生的图像投射到观察屏幕上还具有彩色光源或优选的色源,优选地与不同于 的投影图像,并且叠加在投影到观看屏幕上的图像上。 彩色光的源或源可以用这种有色光直接照射到观看屏幕的整个区域,或者可以用彩色光照射其上产生图像的图像再现装置的面板。

    PERIMETER
    100.
    发明申请
    PERIMETER 审中-公开
    周长

    公开(公告)号:US20140049751A1

    公开(公告)日:2014-02-20

    申请号:US14113348

    申请日:2012-04-12

    IPC分类号: A61B3/00

    CPC分类号: A61B3/0008 A61B3/024

    摘要: A perimeter (1) having a means (26, 27) for measuring the field of vision of a subject eye by successively causing visual recognition of a visual target (16) projected in different areas, a means (18) for monitoring the fixation status during field of vision measurements, an illumination means (20, 21, 22) for providing illumination to a brightness required for monitoring the fixation status of the subject eye, and a vision correcting means (7) for correcting the vision of a subject eye; wherein the perimeter is provided with: a lens holder part (12) provided to allow a corrective lens on the vision correcting means (7) to be attached, detached, or replaced; a lens brightness database (31) for displaying the brightness of the illumination means when the subject eye (19) is illuminated at essentially the same brightness in accordance with the mode of mounting the corrective lens that is mounted on the lens holder part (12); a means (29) for calculating the state in which the corrective lens is mounted with regard to the vision correcting means (7); a means (29) for calculating the brightness of the illumination means corresponding to the mode of mounting of the corrective lens, based on the lens brightness database (31); and a control means (29) for illuminating the subject eye using the illumination means, based on the calculated brightness of the illumination means.

    摘要翻译: 具有用于通过连续地对投影在不同区域中的视觉目标(16)进行视觉识别来测量被摄体眼睛的视野的装置(26,27)的周边(1),用于监视固定状态的装置(18) 在视野测量期间,提供用于向监视被检眼的固定状态所需的亮度提供照明的照明装置(20,21,22)以及用于校正被检眼的视觉的视力校正装置(7) 其中所述周边设置有:透镜保持器部分(12),其被设置成允许所述视力校正装置(7)上的矫正透镜被附接,拆卸或更换; 用于根据安装在透镜保持器部分(12)上的校正透镜的安装模式以基本相同的亮度照亮被摄体眼(19)时,显示照明装置的亮度的透镜亮度数据库(31) ; 一种用于计算相对于视力矫正装置(7)安装校正透镜的状态的装置(29); 用于基于所述透镜亮度数据库(31)计算与所述校正透镜的安装模式相对应的所述照明装置的亮度的装置(29)。 以及基于计算出的照明装置的亮度,使用照明装置照亮被检眼的控制装置(29)。