Olympus Corporation

Bakusui Daidoji

Takeshi Ito

Hiroyuki Kamee

Motoki Tabata

Satoshi Ohara

Eiji Yamamoto

Yasuo Sasaki

Kazuaki Tamura

An illuminating device includes an illumination light generator configured to generate illumination pulses of coherent light, and a speckle modulator configured to modulate speckle caused by the coherent light. The illumination pulse generator repeatedly generates a single illumination pulse group including a plurality of illumination pulses as a repetitive illumination pulse group.

Illuminating device, imaging system, endoscope system including the imaging system, and microscope system including the imaging system

An endoscope system includes: a light source that is configured to emit primary light; plural illuminators that are configured to be irradiated with the primary light to emit plural respective illumination light generated based on the radiated primary light toward an observation object so that at least part of the plural illumination light overlap on the observation object; and an adjuster that is configured to desirably adjust a ratio of light quantities of the primary light that travels from the light source to the respective illuminators, so as to distribute the primary light to the respective illuminators.

Endoscope system for adjusting ratio of distributing primary light to first illuminator and second illuminator

An endoscope apparatus includes an illuminator including: an emphasis light source that emits emphasis narrow band light whose peak or central wavelength is included in an emphasis wavelength range that includes a maximum wavelength taking a maximum value of an optical absorption spectrum of a diagnosis target substance or a largest wavelength taking a largest value of the spectrum in any of three color ranges; and a non-emphasis light source that emits non-emphasis narrow band light whose peak or central wavelength is included in a non-emphasis wavelength range that is a wavelength range not including the emphasis wavelength range of the color ranges. The illuminator further includes a light quantity ratio changing section that changes a light quantity ratio between the emphasis and non-emphasis narrow band light.

Endoscope apparatus for changing light quantity ratio between first emphasis narrow band light and first non-emphasis narrow band light and light quantity ratio between second emphasis narrow band light and second non-emphasis narrow band light

An endoscope apparatus includes an imager configured to detect reflected and scattered light of illumination light radiated to an observation object and output an imaging signal, the illumination light including light in three wavelength ranges corresponding to first, second, and third depth regions, and an image processor including an intermediate emphasis image generator configured to generate an intermediate emphasis image, based on a first emphasis image signal generated based on emphasis narrowband light, a first non-emphasis image signal generated based on non-emphasis narrowband, and image signals corresponding to all wavelength ranges not including the first emphasis and non-emphasis image signals, and a display image generator configured to generate a display image based on the intermediate emphasis image.

Endoscope apparatus

An illumination unit includes a light guide and a light converter. Wettability which a distal end side surface of the light guide has for an enclosing member of the light converter is lower than wettability which a distal end face has for the enclosing member.

Illumination unit and endoscope

An endoscope system includes an illumination section, a color component ratio measurement section and a light quantity ratio adjustment circuit. The illumination section including a light source sequentially or simultaneously radiates an illumination light being a plurality of narrow-band lights having wavelengths different from each other and having light quantities which are independently controllable each other, on an observation object. The color component ratio measurement section measures a color component ratio of the illumination light. The light quantity ratio adjustment circuit adjusts a light quantity ratio of the narrow-band lights based on an output from the color component ratio measurement section and performs color correction to cause the illumination light to be a desired color.

Endoscope system and endoscope light source apparatus

An endoscopic system includes a speckle reduction unit which is reduce speckle generated on an observed portion by light that has coherence, a controller which controls an operation of the speckle reduction unit and a plurality of observation modes including a speckle observation mode of observing the observed portion based on the speckle generated on the observed portion by the light. The controller controls the operation of the speckle reduction unit in accordance with the observation modes such that the speckle reduction unit does not reduce the speckle in the speckle observation mode and the speckle reduction unit reduces the speckle in the observation modes other than the speckle observation mode.

Endoscopic system with speckle reduction unit

An endoscope system has observation modes making observations with lights having optical characteristics different from each other. The system includes an endoscope including an insertion section provided with an illumination window, a light guide arranged in the insertion section, and including an entrance end on which the lights enter and a plurality of light guide areas that guide the lights entered on the entrance end, and an entrance area switching unit that switches between the light guide areas through which the entered lights are guided by switching between areas on which the lights enter at the entrance end in accordance with an observation mode.

Endoscope system

A light source device includes: excitation light sources configured to emit a plurality of excitation light including mutually different spectra; wavelength converting members configured to wavelength-convert the excitation light emitted from the excitation light sources into light having mutually different spectra and configured to be disposed in a common application region of the excitation light; and a light source control unit configured to switch a combination of the excitation light sources that are lighted among the excitation light sources based on the observation mode including a normal light observation mode and a special light observation mode to highlight a particular observation target input to an input unit, wherein light emitted from the wavelength converting members is used as illumination light, and the illumination light corresponding to the observation modes is emitted from a same emitting portion.

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Hachioji, Japan

Bakusui Daidoji