Patent application number | Description | Published |
20080249368 | ENDOSCOPE APPARATUS - When illumination light in an ultraviolet region and a visible light region is emitted from a light source lamp, a light quantity of the illumination light is adjusted by a first diaphragm mechanism and a second diaphragm mechanism, and sequentially irradiated to an observation target via a rotating filter. At this time, the first diaphragm mechanism adjusts the light quantities of excitation light and RGB light of a wavelength band of the illumination light, and the second diaphragm mechanism has a transmission property for light in the ultraviolet region and adjusts the light quantity of the RGB light without influencing the light quantity of the excitation light. Thereby, the light quantities of both the excitation light and RGB light emitted form one light source lamp are controlled, and optimal brightness balance can be obtained. | 10-09-2008 |
20100073731 | IMAGE GENERATING APPARATUS - An image generating apparatus according to the present invention includes: a first light source unit that emits light in a first wavelength band to a subject; a second light source unit that emits light in a second wavelength band, which is a part of the first wavelength band, to the subject; an image pickup unit that picks up an image of the subject and outputs the image as an image pickup signal; a light cut filter unit that cuts light in the second wavelength band reflected from the subject; and a complementary processing unit that applies complementary processing to a component equivalent to the second wavelength band cut by the light cut filter unit in the image of the subject picked up by the image pickup unit in a state in which the subject is illuminated by the light in the first wavelength band. | 03-25-2010 |
20100204544 | ENDOSCOPE APPARATUS AND METHOD OF SETTING THE SAME - A processor includes a comparison section for comparing an output (dimming signal) of a dimmer circuit and a predetermined reference value, a setting section for setting a gain of an AGC, a shutter control parameter (charge storage time) in an electronic shutter control section, and an opening area of a light source diaphragm in a light source device based on a comparison result of the comparison section, and the electronic shutter control section for controlling an electronic shutter function of a CCD driving circuit under control of the setting section. | 08-12-2010 |
20100278404 | MEDICAL IMAGE PROCESSING APPARATUS AND MEDICAL IMAGE PICKUP SYSTEM - A medical image processing apparatus of the present invention is a medical image processing apparatus to which a plurality of color components corresponding to frame-sequentially picked-up images of an object are time-sequentially inputted while maintaining periodicity thereof, including a color component storage section that can store a first color component inputted to the medical image processing apparatus at one timing and a second color component, which is a component of the same wavelength band as that of the first color component inputted to the medical image processing apparatus at timing preceding the one timing by one cycle or more, and an image correction processing section that simultaneously reads the first color component and the second color component stored in the color component storage section and performs image correction processing. | 11-04-2010 |
20110012025 | FLUORESCENCE OBSERVATION APPARATUS - A fluorescence observation apparatus according to the present invention includes a light source section that can emit a plurality of excitation light beams of different wavelength bands and select excitation light beams to be emitted to an object where there are a first fluorescent substance and a second fluorescent substance to be examined from among the plurality of excitation light beams, a variable filter section that selectively allows at least part of the wavelength band of returning light from the object to pass, a photo-detecting section that detects the light that has passed through the variable filter section, a calculation processing section that carries out calculations to determine a wavelength band of the excitation light emitted from the light source section and a transmission wavelength band in the variable filter section based on intensity characteristics of the plurality of excitation light beams, fluorescence characteristics of the first fluorescent substance and fluorescence characteristics of the second fluorescent substance and a control section that performs control of causing the light source section to interlock with the variable filter section based on the calculation result of the calculation processing section. | 01-20-2011 |
20110017923 | FLUORESCENCE OBSERVATION APPARATUS - A fluorescence observation apparatus according to the present invention includes a light source section that emits excitation light for exciting a first fluorescent substance and a second fluorescent substance, a fluorescence detection section that detects first fluorescent light emitted when the first fluorescent substance is excited and second fluorescent light emitted when the second fluorescent substance is excited, a correction value calculation section that calculates a correction value for canceling a color mixture between the first fluorescent light and the second fluorescent light based on feature values corresponding to characteristics of the first fluorescent substance and the second fluorescent substance, a detected image generation section that generates a first detected image corresponding to a detection result of the first fluorescent light and a second detected image corresponding to a detection result of the second fluorescent light, and an image correction section that corrects a luminance value of the first detected image to a luminance value corresponding to intensity of the first fluorescent light and corrects a luminance value of the second detected image to a luminance value corresponding to intensity of the second fluorescent light. | 01-27-2011 |
20110152614 | IMAGE PICKUP SYSTEM AND ENDOSCOPE SYSTEM - An image pickup system of the present invention has a light emitting section that emits a first illuminating light and a second illuminating light to an object, an image pickup section that picks up an image of a first return light and an image of a second return light, and outputs the images as image pickup signals respectively, an image generating section that generates a first image and a second image respectively based on the image pickup signals, a differential value calculating section that calculates a first differential value corresponding to the first image and a second differential value corresponding to the second image respectively, a calculation section that performs calculation processing by using the first differential value and the second differential value, and a region discriminating section that discriminates between regions in the object by applying threshold processing to a calculation result of the calculation section. | 06-23-2011 |
20110157340 | FLUORESCENT IMAGE APPARATUS AND METHOD FOR ACQUIRING FLUORESCENT IMAGE - A fluorescent imaging device includes an irradiation section that irradiates an object to be examined with excitation light and reference light, an image pickup section that picks up a fluorescence image based on the excitation light and a reflected light image based on the reference light, a comparison section that compares relative intensity between the fluorescent image generated from the fluorescence image and the reflected light image generated from the reflected light image, and a selection section that selectively outputs one of the reflected light image and the fluorescent image based on the comparison result. | 06-30-2011 |
20110164249 | LIGHT SPECTRUM DETECTION METHOD - Optical spectrum of a light irradiated on the object, a spontaneous light emitted from within the object or a surface thereof, a scattered light, a transmitted light, a reflected light or a refracted light from within the object or a surface thereof generated by irradiating light on the object is resolved by amplifying said lights in a bandwidth narrower than the bandwidth of the optical spectrum of said lights. Thus, a method for detecting optical spectrum is provided in which signal intensity is amplified while deterioration of spectral data is suppressed. | 07-07-2011 |
20110201993 | DETECTING APPARATUS AND MEDICAL CONTROL METHOD - A detecting apparatus includes: a first detecting unit that acquires drug accumulation information concerning a drug which has a been dosed to a subject and has accumulated in a lesion region of the subject; a calculating unit that calculates, on the basis of the drug accumulation information, a change with time of the drug accumulation information in the lesion region as change-with-time information; a threshold setting unit for setting, on the basis of the change-with-time information, a threshold for detecting the drug accumulated in the lesion region; and a second detecting unit for detecting, on the basis of the threshold, the drug accumulated in the lesion region. | 08-18-2011 |
20110267458 | FLUORESCENCE OBSERVATION DEVICE - A fluorescence observation apparatus according to the present invention includes a light source section that can emit a plurality of excitation light beams for exciting a plurality of fluorescent substances and a reference light, an image pickup section that picks up images of a plurality of fluorescent light beams emitted by emitting the plurality of excitation light beams to the plurality of fluorescent substances and reflected light of the reference light, an image generation section that generates an image signal corresponding to the plurality of fluorescent light beams and the reflected light of the reference light whose images are picked up by the image pickup section, a brightness detection section that detects brightness of a plurality of image signals corresponding to the plurality of fluorescent light beams and brightness of an image signal corresponding to the reflected light of the reference light, sets an upper limit value and a lower limit value of brightness using brightness of the image signal corresponding to the reflected light of the reference light as a reference and detects whether or not the brightness of the plurality of image signals corresponding to the plurality of fluorescent light beams falls within a range between the upper limit value and the lower limit value, and a brightness adjusting section that adjusts brightness of each image signal outside the range out of the plurality of image signals corresponding to the plurality of fluorescent light beams so as to fall within the range based on a detection result by the brightness detection section. | 11-03-2011 |
20110267493 | FLUORESCENCE OBSERVATION APPARATUS - A fluorescence observation apparatus of the present invention includes a light source section that can emit a plurality of excitation light beams for exciting a plurality of fluorescent substances and a reference light, an image pickup section that picks up images of a plurality of fluorescent light beams emitted by emitting the plurality of excitation light beams to the plurality of fluorescent substances and reflected light of the reference light, an image generation section that generates image signals corresponding to the plurality of fluorescent light beams and the reflected light of the reference light whose images have been picked up by the image pickup section, and an image processing section that assigns a plurality of fluorescent light images related to image signals corresponding to the plurality of fluorescent light beams and a reference light image related to an image signal corresponding to the reflected light of the reference light to a plurality of color channels respectively and outputs the resulting image as a synthesized image, wherein the image generation section generates an image signal in which the one fluorescent light image and the synthesized image are arranged side by side on a same screen, and the image processing section calculates, when a color tone operation is performed on any one of the plurality of image signals generated by the image generation section, a color tone adjustment coefficient for achieving color tone balance with image signals other than the image signal subjected to the color tone operation and performs color tone calculation processing on the image signals to be assigned to the plurality of color channels using the calculated color tone adjustment coefficient. | 11-03-2011 |
20130006109 | ENDOSCOPE APPARATUS - An endoscope apparatus includes a light source device, an endoscope, a processor, and an observation monitor. The light source device switches between excitation light EX that excites a connective tissue in a submucosa of a tissue within a body cavity, narrow-band light NBa absorbed by a blood vessel running through the submucosa or muscularis propria, and narrow-band light NBb absorbed by a substance locally injected into the submucosa, and radiates the selected light. The processor generates a plurality of image signals, images of which are picked up by a CCD of the endoscope and the observation monitor synthesizes a plurality of images and displays the synthesized image. | 01-03-2013 |
20130096376 | ENDOSCOPE APPARATUS AND METHOD FOR CONTROLLING FLUORESCENCE IMAGING APPARATUS - An endoscope apparatus includes: a light source portion that irradiates an excitation light and a reference light alternately; an image pickup portion that picks up images of the fluorescence from the living tissue and the reflected light; a signal processing portion that generates image signals from picked up signals; an addition processing portion that generates, from image signals of fluorescence, addition processed signals of fluorescence in which pixels are added; a light quantity control portion that controls the quantity of light so as to maintain a predetermined light quantity ratio between the quantities of the excitation light and the reference light from the addition processed signals of fluorescence and image signals of the reflected light; and a superimposition processing portion that superimposes the addition processed signals and the image signals of the reflected light, with the predetermined light quantity ratio being maintained. | 04-18-2013 |
20130150713 | MEDICAL INSTRUMENT - A medical instrument is provided with: an illumination section radiating excitation light for exciting a fluorescent substance given to a subject, to the subject; an image pickup section photoelectrically converting reflected light from the subject to which the excitation light is radiated, to pick up an image of the subject; a reading section holding pixel signals obtained by the photoelectrical conversion and capable of reading the pixel signals non-destructively while changing amplification factors of the held pixel signals by a predetermined unit of pixels; and an image processing section determining an arithmetic mean of the pixel signals read with different amplification factors by the reading section to generate an image. The medical instrument improves visibility of each fluorescent area without occurrence of position displacement even in the case where multiple fluorescent areas with a relatively large brightness/darkness difference exist within one screen. | 06-13-2013 |
20130150728 | MEDICAL APPARATUS - A medical apparatus has a light source section capable of irradiating an excitation light and a reference light alternately, an image pickup section that picks up images of fluorescence by the excitation light, and reflected light of the reference light, a pixel addition processing section that performs pixel addition processing of making a plurality of pixels in a first image as a fluorescence image one pixel, and generates a second image, an adjusting section that makes adjustment so that a brightness ratio of the second image and a reference light image obtained by picking up of the image of the reflected light has a constant value, and thereby generates a third image signal and a fourth image, an interpolation processing section that applies interpolation processing to the third image, and generates a fifth image, and an image processing section that performs image synthesis of the fifth image and the fourth image. | 06-13-2013 |
20130155215 | Scanning Endoscope Device - Scanning endoscope device including a light source unit that repeatedly emits a plurality of illumination beams in different wavelength bands in a certain order with a predetermined repetition period; a light guiding section that has an emission surface; a driving section that oscillates the emission surface in two axial directions in a reciprocating manner to two-dimensionally scan the illumination beams; a controller that controls the source unit and/or the driving section so that an oscillation period and a oscillation amplitude of the emission surface are proportional to the period of the illumination beams, and that controls the driving section so that the oscillation period periodically and gradually changes and the oscillation period is proportional to the oscillation amplitude; a light detecting section that detects return beams; and an image generating section that generates images of the return beams in synchronization with the predetermined period of the source. | 06-20-2013 |
20130201315 | MEDICAL INSTRUMENT - A medical instrument is provided with: an image pickup section acquiring return light generated on the basis of light radiated to a subject; a frame rate setting section setting a frame rate of the image pickup section; a charge reading control section providing a blanking period between a period of reading pixels of the image pickup section and a next reading period, and controlling selection of pixels of the image pickup section to be read and a reading period on the basis of a value set by the frame rate setting section; and an illumination section providing the blanking period between the period of reading pixels of the image pickup section and the next reading period, and radiating special light to the subject during the blanking period provided by the charge reading control section. | 08-08-2013 |
20130317371 | ENDOSCOPE APPARATUS - An endoscope apparatus for generating an image of a target site containing a fluorescent substance, including an image pickup section provided with pixels for generating image pickup signals corresponding to a red color region and a band closer to a long wavelength side than the red color region and pixels for generating an image pickup signal corresponding to a band closer to a short wavelength side than the red color region, a light source section emitting to the target site, excitation light for exciting the fluorescent substance and generating fluorescence and reference light for generating reflected light from the target site, and an image processing unit that acquires an image obtained by separating a signal component generated upon receiving the fluorescence from the image pickup signal generated by the image pickup section and an image obtained by separating a signal component generated upon receiving the reflected light. | 11-28-2013 |
20140267657 | ENDOSCOPE APPARATUS - An endoscope apparatus includes: an image pickup portion that, with respect to return light including a plurality of wavelength band components that is generated accompanying irradiation of illuminating light onto an object, receives the return light with a plurality of different spectral sensitivities and generates an image pickup signal for each of the spectral sensitivities; a correction portion that, based on a spectral distribution of the return light and spectral sensitivity characteristics of the image pickup portion, sets a correction coefficient so that spectral distributions for each of the plurality of wavelength band components included in the image pickup signals become a similar shape to each other; and a calculation portion that, based on the correction coefficient, performs a calculation that separates image pickup signals into each wavelength band component among the plurality of wavelength band components included in the return light. | 09-18-2014 |
20150022647 | ENDOSCOPE APPARATUS - An endoscope apparatus includes an illuminating section capable of irradiating a subject with a light in a first wavelength band and light in a second wavelength band, an image processing section including a color filter configured by a plurality of filters, the image processing section generating, from two image pickup signals respectively generated in a first pixel and a second pixel that respectively receive light in a predetermined wavelength band and light in a wavelength band different from the predetermined wavelength band among return lights from the subject, first and second image signals, a control section that determines whether the two image pickup signals can be separated into the first and second image signals, and an illumination control section that performs irradiation in a time division manner or simultaneous irradiation according to a determination result whether the separation is possible or not. | 01-22-2015 |