Abstract: An EFP lens 12 is mounted on an ENG camera 14 through a lens supporter 16. Normally, a connector 30 of the EFP lens 12 is joined to a connector 32 of the lens supporter 16, and signal lines from pins of the connector 30 of the EFP lens 12 are connected to corresponding pins of a parallel connector 38 and corresponding pins of a serial connector 62 in the lens supporter 16. When the parallel connector 38 is connected to the connector 34 of the ENG camera 14, it is possible to perform the parallel communication between the EFP lens 12 and the ENG camera 14. When the serial connector 62 is connected to the connector 34 of the ENG camera 14, it is possible to perform the serial communication.

Abstract: An autofocus system includes: an image pickup unit that takes a subject image formed by an optical system; a target subject detection unit that detects a target subject, which is previously registered as an autofocus target, in a photographing image taken by the image pickup unit; a lens-to-subject distance calculation unit that calculates a lens-to-subject distance to the target subject based on information on a photographing angle of view depending on a focal length of the optical system, a size of the target subject in the photographing image, and a size of the target subject in real space; and a rough AF unit that controls a focus of the optical system so as to bring into focus the subject which is located at the lens-to-subject distance calculated by the lens-to-subject distance calculation unit.

Abstract: An external resonator type wavelength tunable laser has a laser medium, a dispersion system which spatially disperses light emitted from the laser medium by wavelength, and a wavelength selecting system having a reflecting surface which selectively reflects a part of the light which is reflected by the reflecting surface as a return light, and the wavelength selecting system is structured so that the inverse of a number of a wavelength of the return light linearly changes with time.

Abstract: In a mirror including a substrate and a dielectric multilayer coating structure formed on the substrate, the multilayer coating structure includes two mirror-function layer portions, each formed by a plurality of layers deposited one on another, and a cavity layer that is arranged between the two mirror-function layer portions, and which causes light having a predetermined wavelength to resonate between the two mirror-function layer portions. Further, a dispersion value with respect to the light having the predetermined wavelength is in the range of ?600 fs2 to ?3000 fs2 and a reflectance with respect to the light having the predetermined wavelength is in the range of 97% to 99.5%.

Abstract: Disclosed is a light source device that has lower costs and lower power consumption compared to a halogen lamp, and has the same spectral characteristics as the halogen lamp. The light source device includes a white LED that emits White light having an emission peak in a blue range and an optical filter that partially reduces the quantity of light in the blue range in the white light emitted from the white LED such that the spectral characteristics of the white light emitted from the white LED are close to those of light emitted from a halogen lamp.

Abstract: An endoscope comprises: an insertion portion to be inserted into a body cavity; an operation portion continuously provided from a proximal end side of the insertion portion; and a suction section that performs suction from an distal end of the insertion portion, wherein the suction section comprises: a cylinder in which a gas is compressed and filled; a nozzle unit that generates a negative pressure inside the nozzle unit by jetting out the gas in the cylinder; and a liquid receiver tank communicated with the distal end of the insertion portion, the negative pressure inside the nozzle unit being transmitted to the liquid receiver tank.

Abstract: An imaging apparatus for an electronic endoscope includes a bare chip of CCD, a circuit board with approximately the same thickness as the bare chip, and a conducting plate with no less than 1/4 width of the bare chip. The bare chip has terminals on the surface with an imaging surface. The terminals are arranged near the edge facing the rear end of an insertion section of the electronic endoscope. The circuit board has terminals on the surface near the edge facing the front end of the insertion section. These terminals are connected by wire bonding. The conducting plate is attached along one side of the rear surface of the CCD and the circuit board for electrical connection. A forceps channel is provided such that its outer circumference fits partially into a cut portion formed on the rear surfaces of the CCD and the circuit board by the conducting plate.

Abstract: An ultrasonic endoscope comprising an insertion portion including a distal hard portion. The insertion portion comprises an ultrasonic transducer arranged in the distal hard portion and a treatment equipment lead-out hole, a slant surface on which an endoscopic viewing section is formed, the slant surface being provided in a position rear of the treatment equipment lead-out hole and a balloon removably arranged in a fit area on the ultrasonic transducer. The distal hard portion comprises a balloon-fit groove between an arrangement region of the ultrasonic transducer and an opening of the treatment equipment lead-out hole. The balloon has an end including a retaining ring that fits in the balloon-fit groove. The distal hard portion further comprises a treatment equipment guide member that slidably guides the treatment equipment across an arrangement area of the balloon-fit groove and up to a position on a beginning side of a scanning range of the ultrasonic transducer.

Abstract: An image rotation adapter that is configured to be detachably mounted between an image capturing lens and a camera main body in a camera and includes a first prism configured to invert the object image passed through the image capturing lens by reflecting an odd number of times object light passed through the image capturing lens and a second prism that is supported rotatably about the optical axis, and that is configured to further invert the object image inverted by the first prism by reflecting an odd number of times the object light passed through the first prism; an operation device configured to perform an operation to rotate the second prism; and a relay optical system configured to re-form the object image passed through the second prism on the light receiving surface of the image pickup device.

Abstract: An imaging system is provided and includes an imaging lens and an imaging device such that the maximum diameter of an effective region of a point image becomes a size covering three or more pixels of light receiving pixels, the point image being projected onto a light receiving surface through the imaging lens from any position of X, Y, and Z directions. A signal processing unit in the imaging system executes restoration processing on first image data output from the imaging device that images an optical image of a subject projected onto the light receiving surface through the imaging lens, the restoration processing being executed to generate second image data equivalent to the first image data output from the imaging device when the resolving power of the imaging lens is higher.

Abstract: An endoscope apparatus comprises: a scope comprising a solid imaging device; a processor unit which forms an observation image from signals emitted from the solid imaging device, the processor being connected to the scope; and a plurality of monitors each of which is connected to the processor unit, wherein a whole image of the observation image is displayed on at least one of said plurality of monitors, and a partial image of the observation image is enlarged and displayed on the other one(s) of said plurality of monitors.

Abstract: An imaging system is provided and includes: an imaging lens; an imaging device; a coefficient storage section; and a signal processing section. When a maximum diameter of an effective region of a point image projected onto a light receiving surface of the imaging device through the imaging lens 10 is a size covering three or more pixels, a restoration coefficient corresponding to a state of the point image expressed by first image data output from the imaging device is stored in the coefficient storage unit. The signal processing section executes restoration processing on the first image data output from the imaging device by utilizing the restoration coefficient stored in the coefficient storage unit, the restoration processing being executed to generate second image data equivalent to the first image data output from the imaging device when the resolving power of the imaging lens is higher.

Abstract: An electronic endoscope apparatus is provided and includes: a light source that illuminates a subject with white light; a color imaging device that takes an image of the subject illuminated with white light; and a spectral-image forming circuit that operates RGB three color image signals based on an output from the color imaging device and a matrix data to generate an spectral image signal representative of a spectral image in a color at a designated wavelength. The spectral-image forming circuit is adapted to generate spectral image signals representative of spectral images in respective colors at least three wavelengths different from one another.

Abstract: An autofocus system includes an image pickup unit that takes a subject image formed by an optical system; an autofocus unit that performs focus adjustment on the optical system so as to bring into focus a subject within a predetermined AF area in a photographing image taken by the image pickup unit; a tracking unit that moves an AF frame, which indicates an outline of the AF area, in accordance with the movement of the subject within the photographing image taken by the image pickup unit; a face direction detection unit that detects a face direction of the subject from the photographing image; a face direction registration unit that registers the face direction of the subject together with coordinates which represent a position of the AF frame in the photographing image; a face direction comparing unit that compares the detected face direction of the subject with the registered face direction.

Abstract: Disclosed are an imaging lens having a small size and high imaging performance, a camera module that is provided with the imaging lens and can obtain a high-resolution image signal, and an imaging apparatus. An imaging lens includes a first lens having a positive power, a second lens having a negative power, a third lens that has a positive power and includes a convex image-side surface, and a fourth lens that has a negative power and includes an object-side surface which is concave or flat near an optical axis. The first to fourth lenses are arranged in this order from an object side, and the imaging lens satisfies Conditional expression.

Abstract: An imaging system is provided and includes an imaging lens and an imaging device such that the maximum diameter of an effective region of a point image covers three or more pixels of light receiving pixels, the point image being projected onto a light receiving surface through the imaging lens from an intended position. A signal processing unit executes restoration processing on first image data output from the imaging device, and the restoration processing is executed to generate second image data equivalent to the first image data output from the imaging device when the resolving power of the imaging lens is higher. The imaging lens has a first lens group having a positive power, and a second lens group having a positive power, in order from the object side.

Abstract: A taking lens 10 of an automatic focusing system of an optical path length difference type is configured so that AF object light is branched from a main optical path that guides object light to a video imaging device 26 of a camera main body 14, and object images are formed on AF imaging devices 22A and 22B. A ? type CCD is used as the video imaging device 26, and a ? type CCD, that is easily available and cheap, is used as the AF imaging devices 22A and 22B. In view of that sizes of the AF imaging devices 22A and 22B are smaller than that of the video imaging device 26, the object images formed on the AF imaging devices 22A and 22B are reduced by a reduction optical system 17.

Abstract: An imaging lens is provided and includes: in order from an object side of the imaging lens, a first lens having a positive power; a second lens having a negative power; a third lens having a positive power and having a convex surface on an image side thereof; and a fourth lens having a negative power and having a concave surface or a flat surface on the object side and in a vicinity of an optical axis thereof, and the imaging lens satisfies conditional expression: 0.28<|f4/f|<0.60 ??(1) where f is a focal length of the imaging lens, and f4 is a focal length of the fourth lens.

Abstract: An ultrasonic control apparatus has a connector and a connector cover. The connector cover is attached to be slidable between a close position where the connector is covered and an open position where the connector is exposed, and has a press projection. When the connector is set on the press projection and then pressed down together with the connector cover, the connector is exposed and opposed to the connector, and the connectors can be connected with each other.