摘要:
Electromagnetic shield means are provided on the optical axis of the detector end of an endoscope incorporating pickup means for providing an optical image and converting the image photoelectrically. The electromagnetic shield means are mounted at the preceding end of the endoscopic pickup means for preventing external electromagnetic effects so as to provide distinct image pickup of an object to be examined.
摘要:
This invention concerns an endoscope using a line transfer type solid pickup element which is provided with a means to control the light incident upon the light receiving plane of the solid pickup element and accumulates the optical image from the subject during the incident period and reads the accumulated signal charges during the non-incident period. The means to control the incident light consists of the method to switch ON and OFF the light source driving voltage, method to switch ON and OFF the applied voltage of the liquid crystal filter provided in the optical path, method to provide a rotary filter with shielding regions in front of the light source and method to use a strobo light source. Furthermore, in order to display in color, the combination with the R, G and B color filters is used.
摘要:
Image Sensing means are provided in a solid-state image sensing element at the focus of an imaging optical system, as well as elements for illuminating a sequential three color mode, or the like comprising three color filters each transmitting light having each different wave length along the optical path between said solid-state image sensing element and a light source. Light transmitting elements are provided including liquid crystal panel wherein light transmitting portions are successively switched by applying a voltage so as to pass successively each color filter portions or alternately light transmitting elements are provided wherein the positions of light transmitting portions are successively switched with respect to said color filter portions by displacing reciprocally the light transmitting means to enable the color image sensing.
摘要:
An endoscope is disclosed having a solid state image pick-up for receiving an image from a subject to be examined. The endoscope includes an illuminating source for projecting light onto the subject, a first level detector for detecting a level of a video signal supplied from the solid state image pick-up device, a first level comparator connected to the first level detector for comparing the level of the signal detected by the first level detector with a preset first reference level and generating a first control signal in accordance with the level difference, and a light controller connected to the output of the first level comparator for controlling the amount of light emitted from the illuminating source based on the first control signal. The endoscope also includes a gain-variable amplifier for receiving and amplifying the video signal from the solid state image pick-up device, a second level detector connected to the gain-variable amplifier for detecting the level of the signal therefrom, and a circuit connected to the second level detector for comparing the level of the signal detected by the second level detector with a preset second reference level and generating a second control signal in accordance with the level difference therebetween and providing the second control signal as a gain controlling signal to the gain-variable amplifier.
摘要:
In this invention, the spectral structure of the high-frequency current generated by the cauterizing power circuit for high-frequency incision and excision tools is set in the frequency interleave relationship with the comb-shaped spectral structure inherent in the picture signal formed by the solid pickup element, when an affected part of a subject is collected using the high-frequency incision and excision tools together with an endoscope with the solid pickup element. The picture signal, output form the solid pickup element, is supplied to the display unit via a comb line with the characteristics to meet its spectral structure to become the signal without the spectrum component (noise) caused by the high-frequency current from the said cauterizing power circuit.
摘要:
An electronic scan type ultrasonic diagnosis apparatus for forming a tomographic image of a patient body is disclosed. In order to focus ultrasonic waves emitted from a probe having an array of electroacoustic oscillators, driving pulses are delayed by a surface wave delay device. The delay device has a surface wave propagating medium, a first transducer including a main surface wave electrode and two sub surface wave electrodes, and a second transducer including an array of surface wave electrodes. The main and sub electrodes of the first transducer are arranged along an arc having a center situating at a middle point of the electrode array of the second transducer and the surface wave electrodes of the second transducer are arranged along an arc having a center situating on a center line connecting the main electrode and the middle point of the second transducer and a radius which is a half of that of the arc along which the main and sub electrodes are arranged. In order to remove the influence of quantization side lobes which appear in an ultrasonic wave beam pattern emitted from the probe, the sub electrodes are spaced equidistantly from the main electrode by such a distance that lines connecting respective sub elements with the middle point make angles .+-..theta. which are equal to angles between the quantization side lobes and a main lobe of the emitted ultrasonic wave beam pattern.
摘要:
An image display apparatus which corrects images, which are projected from a plurality of image display sections onto different regions of a screen, by a correction data calculated from picked up image data, and joins the images so that they can be displayed as a continuous image on the screen.
摘要:
An exposure apparatus is arranged to project one unit of a circuit pattern onto the surface of a resist on a substrate to be manufactured and to expose it over the surface of this resist. The exposure apparatus includes a processing unit that enables forming a high-resolution circuit pattern image on the substrate by the use of an image display which is able to ensure a wide display region without deteriorating the resolution, and that when dividing the one unit of circuit pattern into a plurality of regions in order to ensure an inexpensive, reliable exposure operation, divides it so that adjacent ones of the divided regions may partly overlap each other. An exposure device includes a plurality of optical systems each of that projects one of a plurality of the divided regions onto the surface of the resist on the substrate. A control unit causes a plurality of the divided regions to be simultaneously projected on the surface of the resist in such a way as to cause duplex regions between the adjacent regions to overlap each other on the surface of the resist on the substrate to thereby cause the one unit of circuit pattern image to be formed on the surface of the resist on the substrate.
摘要:
An inspecting method for inspecting foreign substances, comprising projecting beams from an illumination system arranged above a light-permeable body to be inspected with an angle of incidence of a first elevation angle onto an upper face of the body, and receiving a reflecting light and a scattering light generated by the beams with a photodetecting angle of a second elevation angle by a photodetecting system. The method further comprising, before the beams are projected, setting a width of the beams of the illumination system to be not larger than w calculated according to an expression w
摘要:
An IC having an image pickup element for optically picking up a code to output an image signal, and an optical system for optically inputting the code to the image pickup element are provided to a reading section for optically reading a code from an information recording medium having a portion at which multimedia information is recorded as an optically readable code. The image pickup element and the optical system are integrally arranged. Further, an IC having an image memory for storing the image signal output from the image pickup element, and an IC for reconstituting the multimedia information from the image signal are provided. A defective element due to a semiconductor manufacturing method is used for at least one of these ICs.