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WO2010007810A1 - Dispositif de source de lumière, et appareil d'endoscope comportant le dispositif - Google Patents

Dispositif de source de lumière, et appareil d'endoscope comportant le dispositif Download PDF

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Publication number
WO2010007810A1
WO2010007810A1 PCT/JP2009/054881 JP2009054881W WO2010007810A1 WO 2010007810 A1 WO2010007810 A1 WO 2010007810A1 JP 2009054881 W JP2009054881 W JP 2009054881W WO 2010007810 A1 WO2010007810 A1 WO 2010007810A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
led
blue
operation mode
yellow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2009/054881
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English (en)
Japanese (ja)
Inventor
大和 合渡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Corp filed Critical Olympus Corp
Publication of WO2010007810A1 publication Critical patent/WO2010007810A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0638—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements providing two or more wavelengths
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0655—Control therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0661—Endoscope light sources
    • A61B1/0669—Endoscope light sources at proximal end of an endoscope
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0661—Endoscope light sources
    • A61B1/0684—Endoscope light sources using light emitting diodes [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
    • G02B6/0008—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted at the end of the fibre
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A61B1/05—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0018—Redirecting means on the surface of the light guide

Definitions

  • the present invention relates to a light source device including a plurality of light sources and an endoscope device.
  • a light source device that emits high-intensity illumination light by sequentially lighting a plurality of LEDs (Light Emitting Diodes) arranged in an annular shape with high output and rotating a light guide rod in accordance with the lighting cycle is known.
  • LEDs Light Emitting Diodes
  • This light source device is configured such that a visible light spectrum can be complemented by a plurality of color LEDs.
  • Japanese Patent No. 3989302 Japanese Patent No. 3989302
  • an endoscope device as a main application of the above light source device.
  • a plurality of illumination modes are required depending on the observation target.
  • Specific illumination modes include, for example, a white light observation mode in which white light is illuminated, and a special light observation mode in which only blue and green LEDs are turned on to emit only light of a specific wavelength band.
  • Patent Document 1 it is disclosed that the color of illumination light is adjusted by adjusting the light quantity of each LED. However, it corresponds to a plurality of illumination modes, and specifically an endoscope apparatus. There is no disclosure of the correspondence with the spectrum required for.
  • the pseudo white LED when a pseudo white LED combining a blue lighting element and a phosphor and a blue LED or a green LED for irradiating light of a wavelength in a specific band are arranged on the circumference, the pseudo white LED is simulated during white light observation.
  • the white LED is turned on, and the blue LED and the green LED are turned on when irradiating light of a wavelength in a specific band.
  • the amount of white light is drastically reduced as compared with the case where the pseudo white LED is used alone.
  • the present invention has been made in view of the above circumstances, and is a light source device capable of ensuring the amount of blue light necessary when irradiating light of a wavelength in a specific band while ensuring the amount of white light necessary for white light observation. And it aims at providing an endoscope apparatus provided with the same.
  • a first aspect of the present invention includes a plurality of LEDs arranged side by side on a circumference, a blue LED that emits blue light radially inward of the circumference, a yellow LED that emits yellow light, and the blue LED And a light guide that guides the light emitted from the yellow LED in a direction along the central axis of the circumference, a rotating unit that rotationally drives the light guide around the central axis, and a control that controls these parts And the controller turns on the blue LED and the yellow LED in a first operation mode in which the blue LED and the yellow LED are turned on and a second operation mode in which the blue LED is turned on. It is the light source device which controls.
  • the control unit turns on the blue LED and the yellow LED, the blue light emitted from the blue LED, and the yellow light emitted from the yellow LED. Are guided by the light guide unit, and white light obtained by combining these lights is illuminated.
  • the second operation mode only the blue LED is turned on by the control unit, and the blue light emitted from the blue LED is guided and illuminated by the light guide unit.
  • the blue LEDs are turned on to illuminate blue light. Can do.
  • control unit may control a lighting period of at least one of the blue LED and the yellow LED based on a balance between the light amount of the blue LED and the light amount of the yellow LED.
  • control unit may control a current value of at least one of the blue LED and the yellow LED based on a balance between a light amount of the blue LED and a light amount of the yellow LED.
  • a second aspect of the present invention is an endoscope apparatus including any of the light source devices described above and an imaging unit that captures an observation region illuminated by the light source device.
  • the white light is illuminated from the light source device by selecting the first operation mode in the observation with the white light, and the second operation mode selection is performed in the observation with the light of the wavelength in the specific band.
  • blue light is illuminated from the light source device.
  • the image of the observation area illuminated in this way is acquired by the imaging unit.
  • high-intensity white light is illuminated for observation with white light, and detailed observation is possible.
  • observation can be performed by illuminating blue light.
  • the control unit includes a mode switching unit that switches between the first operation mode and the second operation mode, and the observation acquired by the imaging unit in the first operation mode. It is good also as providing the display part which displays the image of an area
  • the blue LED and the yellow LED are set so that the light amount of the operation mode after switching is substantially equal to the light amount of the operation mode before switching. It is good also as adjusting at least any one of these light quantity. In this way, even when the operation mode is switched, the amount of light illuminating the observation area can be made substantially equal, and observation can be continued without a sense of incongruity.
  • FIG. 1 is a schematic diagram illustrating the configuration of the illumination device according to the present embodiment.
  • the light source device 10 includes a plurality of LEDs 11 arranged side by side on the circumference, and a light guide member (light guide section) arranged radially inward of the circumference. ) 15, a rotation motor (rotation unit) (not shown) that drives the light guide member 15 to rotate about the central axis of the circumference, and a rotation sensor (rotation angle detection unit) (not shown) that detects the rotation angle of the rotation unit.
  • a control unit 6 for controlling these units.
  • the LED 11 has a blue LED that emits blue light and a yellow LED that emits yellow light.
  • a plurality of blue LEDs and yellow LEDs are arranged side by side on the circumference, and emit blue light and yellow light respectively inward in the radial direction of the circumference.
  • a green LED that emits green light may be provided instead of some of the blue LEDs or yellow LEDs.
  • the light guide member 15 guides the light emitted from the LED 11 inward in the radial direction of the circumference, and the direction along the central axis O of the circumference of the light guided by the light guide rod 12. And a light guide rod 13 for guiding the light reflected by the prism 16.
  • the light guide member 15 guides light emitted from the LEDs 11 in a direction along the central axis O of the circumference.
  • the rotation motor is arranged in a direction along the central axis O of the light guide member 15 and rotates the light guide member 15 around the central axis O.
  • the control unit 6 controls the above-described units so as to synchronize the lighting cycle of the LED 11 and the rotation cycle of the light guide member 15, and the first operation mode in which the blue LED and the yellow LED are lit, and only the blue LED.
  • a mode switching unit (not shown) for switching the second operation mode to be lit is provided.
  • a light detection unit (not shown) that detects light is disposed on the emission optical axis of the light guide member 15, and the control unit 6 determines the light amount of the blue LED and the yellow LED in the light detected by the light detection unit.
  • the lighting period or current value of at least one of the blue LED and the yellow LED is controlled based on the balance with the amount of light.
  • the control unit 6 When the driving of the light source device 10 is instructed, the control unit 6 outputs a control signal for driving the rotation motor to rotate, and detects the rotation phase of the light guide member 15 by the rotation sensor.
  • the control unit 6 controls the lighting of the LED 11 based on the rotation phase detected by the rotation sensor. That is, the control unit 6 identifies the LED that the light incident surface 17 of the light guide member 15 faces, supplies power to the identified LED, and emits light. At this time, the LED 11 is controlled so as to emit high-luminance light by being driven instantaneously with a current higher than the rated drive and pulsed.
  • symbols Y1, Y2, and Y3 indicate yellow LEDs
  • symbols B1, B2, B3, and B4 indicate blue LEDs
  • symbol G1 indicates a green LED.
  • a configuration including a total of eight LEDs will be described as an example here, but the present invention is not limited to this example.
  • the yellow LEDs reference numerals Y1, Y2, Y3
  • the blue LEDs reference numerals B1, B2, B3, B4
  • the green LED reference symbol G1
  • the spectrum of the yellow LED is shown in FIG. A normal pseudo white LED emits white light by fluorescently converting a part of blue light.
  • the yellow LED included in the light source device of the present embodiment converts all the light of the blue LED to fluorescence. In this way, by converting all the light of the blue LED to fluorescence, it is possible to obtain broad light with a yellow peak, and to obtain light with extremely high brightness compared to a normal pseudo white LED. it can. Further, regarding the blue wavelength range, the blue LED provided in the light source device of the present embodiment can obtain light with higher luminance than the pseudo white LED.
  • the light guide member 15 guides the blue light emitted from the blue LED and the yellow light emitted from the yellow LED. It is illuminated and white light obtained by combining these lights is illuminated. At this time, the amount of light emitted from the exit surface 18 of the light guide member 15 is the sum of the high-power yellow LED and the blue LED, so that high-intensity white light can be illuminated.
  • the blue light emitted from the blue LED and the green light emitted from the green LED are guided by the light guide member 15 and these lights are emitted.
  • Blue-green light obtained by synthesizing is illuminated.
  • the amount of light emitted from the exit surface 18 of the light guide member 15 is the sum of the high-output blue LED and the green LED, high-intensity blue-green light can be illuminated.
  • high-intensity white light can be illuminated by lighting all the LEDs in the first operation mode, and in the second operation mode.
  • blue LED and the green LED blue-green light can be illuminated.
  • only blue LED may be turned on to illuminate blue light.
  • control unit 6 controls the lighting period or current value of at least one of the blue LED and the yellow LED based on the balance between the light amount of the blue LED and the light amount of the yellow LED.
  • the color temperature of the white light obtained by combining the blue light emitted from the blue LED and the yellow light emitted from the yellow LED can be adjusted.
  • FIG. 6 is a schematic configuration diagram of the endoscope apparatus 1 according to this application example.
  • the endoscope apparatus 1 includes a light source device 10, a scope 20 connected to the light source device, and an image processing device 23 that performs image processing on a video signal from the scope 20 to generate a display image. And a monitor (display unit) 24 for displaying an image.
  • a fiber 21 that guides light from the light source device 10 to the tip of the scope 20 is provided inside the scope 20, and illuminates the observation region 30 that faces the tip of the scope 20.
  • a distal end of the scope 20 is provided with a CCD (imaging unit) 22 that images the observation region 30, and an image of the observation region 30 is output to the image processing device 23 as a video signal.
  • CCD imaging unit
  • the CCD 22 is provided with a color separation filter that performs color separation on a pixel-by-pixel basis, and the superimposed light from each LED is simultaneously transmitted in each color in synchronization with the rotation cycle of the rotary motor of the light source device 10 or the lighting cycle of the LED 11. It is designed to receive light.
  • the color separation filter uses a complementary color filter in order to increase the sensitivity of the pixel. By doing so, it is possible to deal with simultaneous imaging devices.
  • the monitor 24 can display the image of the observation area acquired by the CCD 22 in the white light observation mode and the image of the observation area acquired by the CCD 22 in the special light observation mode side by side.
  • the control unit 6 of the light source device 10 adjusts the light amount of the LED 11 based on the luminance information of the video signal from the CCD 22 so that the amount of light received by the CCD 22 is optimal.
  • the observation mode of the light source device 10 is changed by the mode switching unit for each frame Switch.
  • the image of the observation area acquired by the CCD 22 in each observation mode is subjected to image processing by the image processing unit 23 and then reproduced simultaneously on the monitor 24.
  • the luminance of the LED 11 in the observation mode after switching is set. A method for setting the luminance of the LED 11 at this time will be described below with reference to a flowchart shown in FIG.
  • the luminance l of the acquired image is calculated (S2).
  • the set brightness of the LED 11 is calculated (S3).
  • the observation mode is switched (S4), the set brightness of the LED 11 after switching the observation mode is calculated based on the brightness l of the image (S5). ).
  • the LED 11 corresponding to the observation mode after switching is turned on (S6), and the calculated setting brightness of the LED 11 is set (S7).
  • observation with white light high-intensity white light is illuminated to enable detailed observation, and observation with light having a wavelength in a specific band is possible. Then, observation can be performed by illuminating blue light.
  • the image of the observation region acquired by the CCD 22 in the white light observation mode and the image of the observation region acquired by the CCD 22 in the special light observation mode are displayed side by side on the monitor 24, and thus acquired in each observation mode.
  • the image of the observation area is displayed side by side on the display unit.
  • the mode switching unit when the mode switching unit switches the observation mode, it adjusts at least one of the light amounts of the blue LED and the yellow LED so that the light amount of the observation mode after switching is substantially equal to the light amount of the observation mode before switching.
  • the amount of light illuminating the observation area can be made substantially equal, and observation can be continued without a sense of incongruity.
  • the white LED may be turned on in the white light observation mode and image processing may be performed by the image processing device 23 to adjust the white balance.
  • a red LED may be further mounted and turned on during observation with white light or observation with light having a wavelength in a specific band.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Endoscopes (AREA)

Abstract

L'invention porte sur un dispositif de source de lumière, qui peut conserver la quantité d'une lumière bleue nécessaire pour des observations avec une lumière d'une longueur d'onde d'une bande spécifique, tout en conservant la quantité d'une lumière blanche nécessaire pour des observations avec la lumière blanche. L'invention porte également sur un appareil d'endoscope comportant le dispositif de source de lumière. Ce dispositif de source de lumière (10) comprend une diode électroluminescente bleue et une diode électroluminescente jaune disposées en pluralité sur une circonférence pour émettre une lumière bleue et une lumière jaune, respectivement, radialement à l'intérieur de la circonférence, un élément de guide optique (15) pour guider les lumières émises par la diode électroluminescente bleue et la diode électroluminescente jaune, dans une direction le long de l'axe central de la circonférence, une unité rotative pour entraîner l'élément de guide optique (15) en rotation sur l'axe central de la circonférence, et une unité de commande (6) pour commander ces composants. L'unité de commande (6) commande les opérations d'éclairage de la diode électroluminescente bleue et de la diode électroluminescente jaune dans un premier mode de fonctionnement pour allumer la diode électroluminescente bleue et la diode électroluminescente jaune, et, dans un second mode de fonctionnement, pour allumer la diode électroluminescente bleue.
PCT/JP2009/054881 2008-07-16 2009-03-13 Dispositif de source de lumière, et appareil d'endoscope comportant le dispositif Ceased WO2010007810A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008184880A JP2010027278A (ja) 2008-07-16 2008-07-16 光源装置およびこれを備える内視鏡装置
JP2008-184880 2008-07-16

Publications (1)

Publication Number Publication Date
WO2010007810A1 true WO2010007810A1 (fr) 2010-01-21

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PCT/JP2009/054881 Ceased WO2010007810A1 (fr) 2008-07-16 2009-03-13 Dispositif de source de lumière, et appareil d'endoscope comportant le dispositif

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JP (1) JP2010027278A (fr)
WO (1) WO2010007810A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108371535A (zh) * 2018-01-26 2018-08-07 重庆金山医疗器械有限公司 内窥镜多色照明系统

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015005510A1 (fr) * 2013-07-11 2015-01-15 주식회사 엔젤럭스 Dispositif d'éclairage à del tournant intelligent
JP7623139B2 (ja) * 2020-05-19 2025-01-28 清水建設株式会社 照明装置
KR20240153829A (ko) 2023-04-17 2024-10-24 삼성전기주식회사 적층형 전자 부품

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06125911A (ja) * 1992-10-15 1994-05-10 Hamamatsu Photonics Kk 内視鏡装置
JP2003243723A (ja) * 2002-02-14 2003-08-29 Hamamatsu Photonics Kk 紫外光照射装置
JP2005189472A (ja) * 2003-12-25 2005-07-14 Olympus Corp 表示装置及びそれに使用する照明装置
JP2005237973A (ja) * 2004-02-28 2005-09-08 Trumpf Kreuzer Medizin Systeme Gmbh & Co Kg 手術用ランプ
JP2007111151A (ja) * 2005-10-19 2007-05-10 Pentax Corp ビデオ内視鏡装置
JP2007311114A (ja) * 2006-05-17 2007-11-29 Olympus Corp 白色光を発する固体発光素子を用いた照明光学系、及びそれを備えた光学装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06125911A (ja) * 1992-10-15 1994-05-10 Hamamatsu Photonics Kk 内視鏡装置
JP2003243723A (ja) * 2002-02-14 2003-08-29 Hamamatsu Photonics Kk 紫外光照射装置
JP2005189472A (ja) * 2003-12-25 2005-07-14 Olympus Corp 表示装置及びそれに使用する照明装置
JP2005237973A (ja) * 2004-02-28 2005-09-08 Trumpf Kreuzer Medizin Systeme Gmbh & Co Kg 手術用ランプ
JP2007111151A (ja) * 2005-10-19 2007-05-10 Pentax Corp ビデオ内視鏡装置
JP2007311114A (ja) * 2006-05-17 2007-11-29 Olympus Corp 白色光を発する固体発光素子を用いた照明光学系、及びそれを備えた光学装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108371535A (zh) * 2018-01-26 2018-08-07 重庆金山医疗器械有限公司 内窥镜多色照明系统

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