Abstract: A camera is provided that includes a dust-proofing member which has a transparent portion through which a visible light component is transmitted among beams incident from a photographing lens and which absorbs an infrared component, opposed to the front of an image pick-up device at a predetermined interval. A member for vibration is arranged at a peripheral portion of the dust-proofing member, and applies vibrations to the dust-proofing member. And a sealing structure portion is arranged at a portion formed by opposing the image pick-up device and the dust-proofing member, for sealing a space portion that is substantially sealed at peripheral portions of the image pick-up device and the dust-proofing member.

Abstract: A high-performance and low-cost image-forming optical system has a reduced number of constituent optical elements and is made extremely thin, particularly in a direction perpendicular to an image pickup device, by folding an optical path using only three reflecting surfaces. The image-forming optical system has a front unit including a first prism 10, an aperture stop 2, and a rear unit including a second prism 20. The first prism 10 has a first transmitting surface 11, a first reflecting surface 12, and a second transmitting surface 13. The second prism 20 has a first transmitting surface 21, a first reflecting surface 22, a second reflecting surface 23, and a second transmitting surface 24. An optical path incident on the first reflecting surface 22 and an optical path exiting from the second reflecting surface 23 intersect each other.

Abstract: Four galvano mirrors 2(1) to 2(4) are constituted in an array in a galvo unit 1. Four galvano mirrors 32A(1) to 32A(4), and 32B(1) to 32B(4) are constituted in an array in galvo units 30A and 30B, respectively. When constituting an optical switch device for switching the optical signal of an input 2 and an output 2, and four galvano mirrors are provided, respectively while two galvano mirrors are sufficient for each galvo unit because two optical paths are provided. Therefore, the number of the galvano mirrors constituted in one galvo unit is doubly affordable. The yield of the optical switch device in which a plurality of galvano mirrors are simultaneously manufactured in an array is improved, the service life of the optical switch after the operation is prolonged, or the repair cost in a failure can be reduced.

Abstract: An inkjet printer is provided which includes a carriage that has a plurality of print heads and that reciprocates with respect to a recording sheet, a printer main body having a main power supply, and a cable that establishes electric conduction between the main power supply and the plurality of print heads. In addition, a voltage generating unit that generates head drive voltages according to the plurality of print heads from a voltage supplied from the main power supply is provided on the carriage.

Abstract: The invention has for its object to use a zoom system that comprises a reduced number of lens elements, is compact and simplified, and has high image-formation capability, thereby achieving thorough size reductions in video cameras or digital cameras. A zoom lens for use on an electronic imaging system comprises a negative first lens group G1, an aperture stop S, a positive second lens group G2 and a positive third lens group G3. Upon zooming from the wide-angle end to the telephoto end of the zoom lens, the second lens group G2 moves only toward the object side of the zoom lens and the third lens group G3 moves in a locus different from that of the second lens group G2. The second lens group G2 is made up of a positive first lens element having an aspheric surface on its object side, a negative second lens element, a positive third lens element and a negative fourth lens element. The first and second lens elements are cemented together, and the third lens group G3 moves independently for focusing.

Abstract: Endoscopes comprise image pickup elements for picking up images and transmission circuits and the like for transmitting the picked up images with radio waves of different frequencies. In addition, bar codes to code the frequencies used for transmission are provided to the respective endoscopes, the bar code provided to the endoscope used in endoscope inspection is read on a receiver side, and a reception frequency of a station selection unit is set to the read frequency, so that a signal obtained by a desired endoscope can be easily received and imaged even in case a plurality of endoscopes are used.

Abstract: An optical apparatus minimizes autofluorescence and stray light as well as leakage of excitation light and efficiently utilizes illuminating light from a fluorescence illumination optical system to allow observation of a bright fluorescence image. An observation apparatus has an objective, an observation optical system unit including a variable magnification optical system, and an imaging optical system unit including an imaging lens and an eyepiece. A fluorescence illumination apparatus, which is provided separately, is removably attached to the observation apparatus. The fluorescence illumination apparatus has a light source, a collector lens unit, and a reflecting member placed between the objective and the observation optical system unit at a position displaced from the optical axis of the objective to make light from the light source incident on the objective. An excitation filter is provided between the light source and the reflecting member.

Abstract: An attachment 10 that is proximal to an optical probe 9 includes probe information holding means 39 that holds probe information such as a scanning technique and an optical path length or the like. When the optical probe 9 is connected (attached) to an observing device 6, probe information detecting means included in the observing device 6 automatically detects the probe information held in the optical probe. Based on the detected probe information, a scanning technique and an optical path length of reference light are set to values suitable to an actually connected optical probe 9.

Abstract: An ultrasonic observation system of the invention includes a long ultrasonic probe having an ultrasonic sending and receiving portion, which can send and receive ultrasonic, and a holding portion, as a rotation operating portion, which can rotate the ultrasonic probe around an axis, which represents an arbitrary direction of oscillation directions of ultrasonic oscillated from the ultrasonic sending and receiving portion. A grasping portion is integrated with the holding portion. A contact portion is provided at the distal end of the grasping portion 613 and has an ultrasonic vibrator inside. A fixing frame is mounted to a distal end 622 of a holding unit 621 through a bearing 625 freely rotatably around a center axis Si of the ultrasonic probe.

Abstract: A high-frequency coagulation apparatus according to the present invention comprises a controller for controlling supply of the fluid from a fluid supply section to a tubular body and controlling supply of the high-frequency electric current from a high-frequency electric current generation section to an electrode, wherein the controller has a first mode for supplying the high-frequency electric current from the high-frequency electric current generation section to the electrode and supplying the fluid from the fluid supply section to the tubular body, and a second mode for supplying the high-frequency electric current from the high-frequency electric current generation section to the electrode and interrupting supply of the fluid from the fluid supply section to the tubular body.

Abstract: An electronic endoscope including a CCD is detachably connected to a video processor. In the video processor, an output signal from the CCD is A/D converted, white balance is adjusted, an NTSC video signal from a post-process circuit is subjected to processing for generating a basic video signal to be outputted to a monitor, and an option substrate having a connector detachable to a connector for outputting a signal after AGC processing is attached thereto. Thus, user's desired function such as output to the monitor by emphasis processing can easily be realized by attaching the option substrate or the like.

Abstract: The invention relates to a projection viewing system of simplified construction and high illumination efficiency, which enables at least two of images varying with viewing directions to be simultaneously displayed in a viewable fashion. The system comprises display devices 1L and 1R for displaying images, projection optical systems 2L and 2R for magnifying and projecting images 3L and 3R displayed on the display devices 1L and 1R, a diffusing plate 5 located in the vicinity of images projected through the projection optical systems 2L and 2R and an eyepiece optical system 4 for projecting exit pupils of the projection optical systems 2L and 2R on the positions of the eyeballs of a viewer. The diffusing plate 5 has an angle of diffusion of up to 20° at full width half maximum.

Abstract: An optical information processing apparatus includes an image display section for displaying information on an object to be processed as image information, an image information reading section for converting a light from a light source into collimate light and projecting the collimate light onto the image display section to read image information, a Fourier transform optical system for obtaining the Fourier transform of the image information read by the image information reading section, an image dividing section for dividing the image information subjected to Fourier transform at the Fourier transform optical system, a filtering section for filtering the phase or amplitude information in one piece of the image information divided by the image dividing section, an inverse Fourier transform optical system for obtaining the inverse Fourier transform of the image information filtered at the filtering section, a filtering image information acquiring section for taking in the image information subjected to inverse

Abstract: An image forming apparatus has a paper support unit for supporting paper carried by a paper carrying unit and an image forming unit for forming an image on the paper, the support unit having a plural grooves formed in its paper support surface along the paper carrying direction and a plural suction holes formed in the groove, and positions of the suction holes in two adjacent grooves being staggered in the paper carrying direction. Alternatively, the support unit includes a first surface portion on which both ends of the paper in the paper widthwise direction are slid and a second surface portion on which an intermediate portion of the paper between the both ends is slid, a length of a paper sliding surface of the first surface portion along the paper carrying direction is set longer than that of the second surface portion.

Abstract: An image display device is disclosed. The image display device comprises right and left image display means arranged to direct display plane to right and left outsides substantially respectively in the vicinity of central portion of user's both eyes in operation mode observing image, and right and left optical elements for leading to user's right and left eyeballs by reflecting each luminous flux concerning to right and left images from these right and left image display means in a horizontal plane respectively.

Abstract: A flexible shaft is inserted through a sheath constituting an insertion portion of an ultrasonic probe connected to an ultrasonic observation apparatus, an ultrasonic transducer driven to rotate, etc., is attached at the distal end portion thereof, and an ultrasonic wave can be transmitted and received through an acoustic window arranged around thereof. By using hydrocarbon-based oil having a kinematic viscosity of 20 mm2/s as an acoustic medium for filling the surrounding of the ultrasonic transducer in the acoustic window, ultrasonic attenuation at high frequencies can be reduced, decrease of the capacity of the acoustic medium due to volatilization can be reduced, and decrease of the capacity of the acoustic medium due to volatilization is reduced.

Abstract: At the time of irradiation of illumination light rays of an endoscope, a shadow is eliminated by leading illumination light rays passing through a second concave portion of a protruding portion of a hood main body to a shadow part of the protruding portion of the hood main body formed in an observation visual field range of the endoscope.

Abstract: This electronic image pickup apparatus converts a subject image formed by an image-taking optical system into an electrical signal. In order to realize miniaturization by efficiently arranging components in the apparatus, this apparatus includes a plurality of electrical boards which have respective component sides parallel to a principal plane of the apparatus body having a flat shape and which are arranged so as to be spaced apart at a predetermined interval from the principal plane of the body. A plurality of power supply batteries are arranged in the apparatus so that the axial direction of the plurality of power supply batteries are parallel to the component sides of these electrical boards in a space sandwiched by this plurality of electrical boards. A relay board is arranged in a space between a lens barrel which holds the image-taking optical system and the plurality of power supply batteries and connects the plurality of electrical boards.

Abstract: A resectoscope apparatus includes a high-frequency generating device which generates high-frequency current, a hollow sheath which can be inserted in the celom, a scope which is arranged in the sheath and which can observe the celom, an active electrode which transmits the high-frequency current to the body organ, and a solution supply device which supplies a solution to the hollow sheath. At least one of the sheath and the scope has conductivity. The sheath or the scope having the conductivity is connected to high frequency generating device via a connecting member so as to collect return current.

Abstract: A code pattern of an information recording medium contains processing information necessary for editing data according to a restoration processing procedure for restoring multimedia information. The restoration processing procedure has a hierarchical structure of layers 1 to 5. The layer 5 has a file management function. The layer 4 has a function of collecting subset elements to create a subset and converting the same to create a data transfer unit or sector which the layer 5 deals with. The layer 3 or lower layer has a function of reading the code pattern from the information recording medium, subjecting the code pattern to a preset restoration process and outputting the subset elements.