Abstract: A motor-operated valve includes a motor, a linear-motion shaft which receives power of the motor and is linearly moved and which includes a valve member that opens and closes a valve port formed at an end of a valve body, and an elastic member which is provided in the valve body and which contacts with an outer circumferential surface of the linear-motion shaft and regulates the lateral movement of the linear-motion shaft.

Abstract: A motor-operated valve includes a motor, a linear-motion shaft which receives power of the motor and is linearly moved and which includes a valve member that opens and closes a valve port formed at an end of a valve body, and an elastic member which is provided in the valve body and which contacts with an outer circumferential surface of the linear-motion shaft and regulates the lateral movement of the linear-motion shaft.

Abstract: In an electronic endoscope apparatus, a light source such as a xenon lamp is automatically turned off when the endoscope examination is accomplished, under the control of a video signal processing unit. The electronic endoscope apparatus includes a light source for illuminating an interior portion of a biological body under medical examination; an image sensor for imaging the interior portion of the biological body by receiving light reflected therefrom to produce an image signal; a converter for converting the image signal into a corresponding video signal; and, a signal processing unit for detecting that variations in levels of the video signal are continued for a predetermined duration time to output a detection signal, and for turning off the light source in response to the detection signal.

Abstract: An X-ray image pick-up device includes an X-ray source for radiating X-rays onto an object including a region of interest, an image intensifier for converting to an optical image an X-ray image obtained when the X-rays radiated from the X-ray source are transmitted through the object, an image pick-up camera for converting to an image pick-up signal the optical image which is generated from the image intensifier, and an optical diaphragm arranged between the image intensifier and the image pick-up camera for adjusting an amount of optical image light incident on the image pick-up camera.