Olympus Corporation

Olympus Medical Systems Corporation

Yusuke Yabe

Tomoya Takahashi

Koji Omori

Susumu Hashimoto

Masato Toda

Satoshi Tanaka

Aiko Sakai

Atsushi Shimada

Shinji Yamashita

Kotaro Ogasawara

Takahiro Masaki

Yutaka Shirota

Daisuke Akiyama

Akihiko Mochida

Seiki Toriyama

Keiichi Tsuchida

Kyosuke Mizuno

Masaaki Watanabe

Ryo Machida

Mutsumi Oshima

Yasuo Komatsu

Yusuke Yoshida

Yoshimine Kobayashi

Manabu Yajima

Takeshi Ito

Takeshi Suga

Hiroyuki Kamee

Wataru Ono

Kazuma Kaneko

Yoichiro Sakanoue

Takahiro Hayama

Kazue Hongo

Shuhei Hatanaka

Shirota Yutaka

Takahashi Tomoya

An endoscope apparatus includes an illuminating device and a processor. The illuminating device emits display illumination light and support illumination light in a time-division manner. The processor generates a display image based on an image signal acquired when the display illumination light is emitted, and support information based on an image signal acquired when the support illumination light is emitted. The processor generates first support information when an illumination property is a first illumination property, superimposes first display content based on the first support information on the display image, switches the illumination property of the support illumination light to a second illumination property upon determination that the first support information satisfies a predetermined condition, generates second support information when the illumination property is the second illumination property, and superimposes second display content based on the second support information on the display image.

Endoscope apparatus, information storage medium, control method of endoscope apparatus, and processing device

A subject observation system includes a light source, a light sensor, an image pickup device, a light source controller configured to cause the light source to alternately perform low-luminance illumination and high-luminance illumination at a predetermined luminance ratio, and a video processor configured to generate an HDR image, and sets a target sensor value S(n) in a temporarily succeeding n frame based on a sensor value S(n&#x2212;1) in a temporarily preceding (n&#x2212;1) frame and the luminance ratio.

Subject observation system, light source apparatus for endoscope, method of operating subject observation system, and recording medium

A light source device for endoscope includes a rotational body configured to rotate with a rotational axis as a center; a fluorescent body arranged in a predetermined area of the rotational body and configured to generate fluorescence by excitation light being radiated; an illuminating portion capable of selectively radiating excitation light of a first quantity and excitation light of a second quantity which is larger than the first quantity to a fluorescent body; and a control portion configured to switch between a first state of radiating the excitation light of the first quantity to the fluorescent body arranged in a first area and a second state of radiating the excitation light of the second quantity to the fluorescent body arranged in a second area.

Light source device for endoscope and endoscope system

A light source device for endoscope includes: an irradiation portion capable of radiating excitation light; a rotating body provided on an optical axis of the excitation light and configured to rotate with a rotating shaft as a center; a phosphor arranged in an irradiation area of the excitation light, and configured to generate fluorescence by being irradiated with the excitation light; a light quantity control portion configured to control irradiation intensity or irradiation time of the excitation light; and a rotation control portion configured to rotate the rotating body at a predetermined speed when the excitation light is radiated with a first irradiation intensity or time and rotate the rotating body faster than the predetermined speed when reducing the irradiation intensity or the irradiation time of the excitation light is reduced in the irradiation intensity or time vis-a-vis the first ones.

A light source system includes a normal light source apparatus provided with a light source controller and a light source apparatus for specific light provided with a specific light controller. In a state where communication is enabled, the light source controller adjusts an emission intensity of the normal light, generates a light amount control signal that makes the normal light and the specific light have a predetermined light amount ratio, and sends the light amount control signal to the light source apparatus for specific light. The specific light controller adjusts an emission intensity of the specific light based on the received light amount control signal.

Light source system, light source control method, first light source apparatus, and endoscope system

An endoscope apparatus includes: a light-emitting element; a rolling shutter-type image pickup device allowing an exposure period in which the plurality of lines are simultaneously exposed and a reading period in which image pickup signals of the respective lines are sequentially read to be alternately switched to each other; and a control section. The control section controls an intensity of the light emitted by the light-emitting element. The control section can perform switching between a first illumination mode in which the light is applied from the light-emitting element in the exposure period and the reading period and a second illumination mode in which the light is applied from the light-emitting element only in the exposure period, and if the intensity of the light is controlled so as to have a predetermined value, performs control to switch one of the first mode and the second mode to the other.

Endoscope apparatus and video processor

An image pickup system includes a light source apparatus and a light-source control section performing first control for setting a duty width and perform second control for, after the duty width is set to a minimum duty width by the first control, changing supply timing of the illumination light not to supply the illumination light in a period other than the period where the light amount control by the PWM is permitted and to supply, in the period where the light amount control by the PWM is permitted, light having a light amount integrated value equal to a light amount integrated value supplied in the period other than the period where the light amount control by the PWM is permitted, and an image pickup apparatus, where data representing a driving current value after the change of the supply timing and a value of the pulse width is stored.

Image pickup system

A light source apparatus includes: a light source; a light source driving section; a light detection section; a temperature detection section; and a control section being configured to, when determining that detected brightness is outside a range of brightness set for detecting abnormality in the light source or the light detection section and detected temperature is within a range of temperature set for detecting the abnormality in the light source or the light detection section, cause the light source driving section to perform driving of the light source for a case of abnormality in the light detection section, and when determining that the detected brightness is outside the range of brightness and the detected temperature is outside the range of temperature, cause the light source driving section to perform driving of the light source for a case of abnormality in the light source.

Light source apparatus

A light source apparatus, capable of supplying white light including a predetermined wavelength band and a special light, which is light including the predetermined wavelength band and narrower in a band than the white light, includes: a first light source configured to emit light in a first wavelength band including the predetermined wavelength band, a second light source configured to emit light in a second wavelength band including the predetermined wavelength band, and a dichroic mirror configured to selectively transmit light in the predetermined wavelength band from one light of the lights in the first and second wavelength bands, selectively reflect light in a third wavelength band other than the predetermined wavelength band from the other light of the lights in the first and second wavelength bands, and mix and emit the light in the predetermined wavelength band and the light in the third wavelength band.

An image pickup system includes an optical sensor configured to pick up an optical image of an object illuminated with light of a plurality of colors emitted from a plurality of semiconductor light emitting elements with an image pickup device and detect each of light amounts of the light emitted from the plurality of semiconductor light emitting elements, and a controller including hardware. The controller adjusts color balance based on the light amounts of the plurality of colors detected at the optical sensor and sets an exposure timing of a light amount detecting unit according to image pickup operation of the image pickup device.

Image pickup system and light source apparatus

A light source device includes a semiconductor light source, a light source control section, an optical sensor, a sensor control section, and an intensity adjusting section. The light source control section controls a light quantity per field of light to be emitted from the semiconductor light source, by pulse width modulation. The optical sensor receives the light emitted from the semiconductor light source to acquire a quantity of the received light. The sensor control section controls the optical sensor to detect the light in an exposure period shorter than a minimum pulse width in the pulse width modulation, thereby acquiring the quantity of the received light which is acquired by the optical sensor. The intensity adjusting section adjusts emission intensity of the semiconductor light source on the basis of the quantity of the received light.

Light source device and control method of light source device

An endoscope apparatus includes: first and second cooling units configured to cool first and second light source portions; an image pickup portion configured to generate a picked-up image; and a cooling control portion configured to control amounts of light emission of the light source portions while maintaining an amount-of-light ratio so that the brightness of the picked-up image becomes the target brightness and control cooling based on the information about the amount-of-light ratio and the brightness control information; wherein the cooling control portion decides a cooling capacity of the first cooling units and a cooling capacity of the second cooling units for cooling the respective light source portions for which the amounts of light emission are controlled, at the cooling ratio, so as to cause the light source portions to be included within a predetermined temperature range, based on the brightness control information.

Endoscope apparatus

A light source apparatus includes: a control section that acquires information relating to a ratio of a light amount value for light with second wavelength band to a light amount value for light with first wavelength band, obtains a light amount value for the light with the first wavelength band so that an observation image has a predetermined brightness, and, from the information relating to the ratio, determines a light amount value for the light with the second wavelength band, and generates light adjustment information for making first and second semiconductor light sources emit light with the light amount value for the light with the first wavelength band and the light amount value for the light with the second wavelength band; and a drive section that, based on the light adjustment information generated by the control section, drives the first and second semiconductor light sources.

Light source apparatus for driving light sources based on generated light adjustment information

An endoscope system including a control section that controls an LED driving section to supply driving currents to LEDs of a plurality of colors to cause the LEDs to emit lights in a frame-sequential manner and a processor that divides a total exposure period in one frame period of the frame-sequential light emission into ratios of light emission periods for each of the respective colors obtained by dividing light amount ratios of the lights of the plurality of colors, which should be received in a CCD, respectively by respective maximum light emission intensities of the LEDs of the plurality of colors and sets respective maximum light emission periods of the LEDs of the plurality of colors.

Endoscope system with frame-sequential light emission

A light source apparatus includes first and second light sources having different maximum light amounts used, a first light amount detection section detecting a light amount of first light of the first light source, a second light amount detection section detecting a light amount of second light of the second light source, a light amount limiting section limiting a light amount of light incident upon the second light amount detection section so that light amounts detected in the first light amount detection section and the second light amount detection section match a predetermined value within a detection range when light with the maximum light amounts used are emitted from the first light source and the second light source, and a control section controlling amounts of light emission of the first light source and the second light source based on detection results of the first and second light amount detection sections.

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Chofu, Japan

Yusuke Yabe