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WO2008016195A1 - Endoscope et son procédé d'exploitation - Google Patents

Endoscope et son procédé d'exploitation Download PDF

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Publication number
WO2008016195A1
WO2008016195A1 PCT/KR2006/003040 KR2006003040W WO2008016195A1 WO 2008016195 A1 WO2008016195 A1 WO 2008016195A1 KR 2006003040 W KR2006003040 W KR 2006003040W WO 2008016195 A1 WO2008016195 A1 WO 2008016195A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
endoscope
emitted
subject
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/KR2006/003040
Other languages
English (en)
Inventor
Han Bo Shim
Won Woo Cho
Jung Jin Hwang
Kwang Seop Kim
Young Dae Seo
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.)
Intromedic Co Ltd
Original Assignee
Intromedic Co Ltd
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 Intromedic Co Ltd filed Critical Intromedic Co Ltd
Priority to PCT/KR2006/003040 priority Critical patent/WO2008016195A1/fr
Publication of WO2008016195A1 publication Critical patent/WO2008016195A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • A61B1/04—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
    • A61B1/041—Capsule endoscopes for imaging
    • 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
    • A61B1/0607—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 for annular illumination
    • 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
    • A61B1/0653—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 with wavelength conversion
    • 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]

Definitions

  • the present invention relates to an endoscope, and more particularly, to a capsule-type endoscope.
  • An endoscope is an instrument that can be inserted into internal organs, lesion of which cannot be observed without a surgical operation or a postmortem examination, to observe the internal organs.
  • the endoscope may be classified as a direct delivery endoscope having a single tube to directly observe internal organs with the naked eye, an endoscope using a lens system, an endoscope having a camera that can be directly inserted into the internal organs (a stomach camera) , or a fiber scope using glass fiber.
  • An endoscope for digestive organs, especially a stomach has been developed to a high degree. For this reason, the endoscope generally refers to the stomach camera or the stomach fiber scope.
  • the capsule-type endoscope is a subminiature endoscope which can be swallowed by a patient.
  • the capsule-type endoscope moves along the digestive organs, such as the stomach or the small intestine such that a doctor can directly observe the internal parts of the digestive organs through a video screen or a computer monitor.
  • the conventional capsule-type endoscope has the following problems.
  • the capsule-type endoscope must acquire image information in the human body. Consequently, the capsule-type endoscope needs a light source.
  • an LED is used as the light source.
  • the LED has high light efficiency, and therefore, it is suitable for a product having relatively small power consumption, such as the endoscope.
  • the LED has high directionality, and therefore, a larger amount of emitted light can be transmitted to the subject, and a large amount of light can be emitted with low voltage.
  • the light is not uniformly projected to the subject, i.e., the light is concentrated on only a portion of the subject, due to the directionality of the LED. As a result, image information acquired by the camera may be distorted.
  • An object of the present invention devised to solve the problem lies on an endoscope that is capable of uniformly projecting light to a subject, thereby acquiring high-quality image information.
  • Another object of the present invention devised to solve the problem lies on an endoscope having a light source that is capable of uniformly projecting light to a subject for a long period of time with limited power.
  • the object of the present invention can be achieved by providing an endoscope comprising: a ring-shaped light source mounted in an endoscope body for projecting light having uniform spatial distribution to a subject.
  • the endoscope further comprises: a reflecting plate disposed between the ring-shaped light source and the endoscope body for reflecting light emitted from the ring- shaped light source to the front of the endoscope body.
  • the ring-shaped light source is a light emitting diode (LED) light source. More preferably, the LED light source includes: at least one blue-light LED mounted at the front surface of the endoscope body; and a yellow fluorescent substance layer formed on the at least one blue- light LED .
  • LED light emitting diode
  • the LED light source includes: light sources for emitting red, green, and blue lights, lights emitted from the respective light sources being combined into a white light, which is projected to the subject.
  • the ring-shaped light source is an organic electroluminescence (EL) light source. More preferably, white light is emitted from the organic EL light source.
  • EL organic electroluminescence
  • a method for operating an endoscope comprising: emitting blue light from at least one LED light source and projecting the emitted blue light to a yellow fluorescent substance layer; and exciting the yellow fluorescent substance layer using the blue light, such that white light is emitted from the yellow fluorescent substance layer, and projecting the emitted white light to a subject.
  • a method for operating an endoscope comprising: selecting one or two LED light sources from LED light sources emitting red, green, and yellow lights; and emitting light from the selected LED light sources to project the emitted light to a subject.
  • a method for operating an endoscope comprising: projecting white light from a ring-shaped organic EL light source to a subject; and acquiring image information of the subject by means of an image information acquisition unit.
  • light emitted from the light source, which is mounted in the endoscope is uniformly projected to a subject for a long period of time, and light is uniformly illuminated on the subject. Consequently, it is possible to acquire high-quality image information. Also, only a specific color can be projected to the subject. Consequently, it is possible to intensively acquire image information of a specific region. Furthermore, it is possible to use an infrared LED light source, whereby the driving time for the capsule-type endoscope is increased.
  • FIG. 1 is a sectional view illustrating an endoscope according to an embodiment of the present invention.
  • FIG. 2 is a view illustrating a first embodiment of the light source shown in FIG. 1.
  • FIG. 3 is a view illustrating a second embodiment of the light source shown in FIG. 1.
  • FIG. 4 is a view illustrating a third embodiment of the light source shown in FIG. 1.
  • FIG. 5 is a perspective view illustrating a fourth embodiment of the light source shown in FIG. 1.
  • FIG. 6 is a sectional view taken along line I-I' of FIG. 5.
  • FIG. 7 is a view illustrating a method for operating an endoscope according to an embodiment of the present invention. Best Mode for Carrying Out the Invention
  • the endoscope according to the present invention includes a light source for uniformly projecting light to a subject.
  • the light source is formed in a ring shape.
  • the ring-shaped light source is mounted at the front surface of an endoscope body, and an aperture is formed in the center of the ring-shaped light source.
  • a spot-type light source including a light emitting diode (LED) is used.
  • LED light emitting diode
  • the distribution of light projected to a subject is not uniform.
  • the number of the spot-type light source may be increased; however, the power consumption is excessively increased, which is not preferable.
  • the light source is formed in a ring shape.
  • light emitted from the ring-shaped light source is dispersed in every direction while the light propagates to a subject.
  • the light is uniformly distributed, and therefore, the light is uniformly projected to the subject.
  • the subject absorbs the light, the subject emits a predetermined amount of the light. Consequently, the emitted light is introduced into a camera mounted in the endoscope body through the above-described aperture and stored in the camera as image information.
  • FIG. 1 is a sectional view illustrating an endoscope according to an embodiment of the present invention.
  • the endoscope according to the present invention will be described in detail with reference to FIG. 1.
  • the endoscope 100 is a wireless capsule-type endoscope.
  • the endoscope 100 includes an endoscope body 10, a ring-shaped light source 20, a camera 30, a lens 40, an aperture 50, and an image processing unit 60.
  • the endoscope body 10 serves to receive the camera 30 in an integrated fashion.
  • the endoscope body 10 may be constructed in other types different from the capsule type so long as internal components of the endoscope can be mounted in the endoscope body 10.
  • the endoscope body 10 may have a circular or polygonal section. However, it is preferable that the endoscope body 10 be constructed in a capsule structure having a circular section in consideration of ease of used or removal of pain during the introduction of the endoscope body 10 into the human body.
  • the camera 30 serves to photograph images of a subject, such as digestive organs of the human body.
  • an image sensor such as a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS)
  • CCD charge coupled device
  • CMOS complementary metal-oxide semiconductor
  • the lens 40 is a device for projecting light emitted from the subject and incident through the aperture 40 to the camera 30. As shown in FIG. 1, the lens 40 is a convex lens. However, any other lens may be used so long as the focus of the image of the subject can be adjusted by the lens .
  • the aperture 50 is a space defined in the ring-shaped light source 20.
  • the aperture 50 is formed in the shape of a circle, although the aperture 50 may be formed in other different shapes, such as a polygon.
  • the image processing unit 60 serves to transmit image information obtained by the camera 30 or to process the image information according to the command of a user.
  • the image process unit 50 may transmit the image of the subject to a server of the user without modification, or may process, for example, compress the image of the subject and transmit the compressed image of the subject.
  • the image processing unit 60 have only the transmitting function in consideration of the fact that the capsule-type endoscope is small-sized and lightweight.
  • the endoscope according to the present invention further include a driving unit for driving the camera 30, which is apparent to those skilled in the art to which the present invention pertains, and therefore, a further detailed description thereof will not be given.
  • the endoscope further include a reflecting plate.
  • the reflecting plate is disposed between the ring-shaped light source 20 and the endoscope body 10 for reflecting light, emitted from the ring-shaped light source 20 and propagating to the endoscope body 10, to the front.
  • the "front” means the direction in which most of light emitted from the ring-shaped light source 20 propagates. In other words, the “front” means the direction opposite to the direction in which the light emitted from the ring-shaped light source 20 propagates to the endoscope body 10.
  • the reflection plate is made of epoxy containing a material for easily reflecting light, such as glass.
  • the reflecting plate is not a requisite component of the endoscope in this embodiment.
  • the reflecting plate serves to uniformly distribute the light when the light emitted from the ring-shaped light source 20 is excessively dispersed.
  • the reflecting plate which is made of epoxy, is disposed in the front part of the endoscope body 10, which is made of polychlorinated biphenyl (PCB) , such that a small amount of light propagating from the ring-shaped light source 20 to the endoscope body 10 is reflected by the reflecting plate to control the intensity of illumination and the dispersion of the light.
  • the angle of the reflecting plate is adjusted to control the dispersion of the light.
  • the ring-shaped light source is used to illuminate internal digestive organs of the human body and to photograph images of the internal digestive organs. Accordingly, it is preferable that the ring-shaped light source emit white light. When specific regions are illuminated and photographed, as will be described hereinafter, however, the ring-shaped light source may be constructed to emit visible rays of a specific wavelength range.
  • the ring-shaped light source 20 is used to illuminate the subject. Consequently, it is preferable that the ring-shaped light source 20 be mounted at the front surface of an endoscope body 10.
  • light emitted from the endoscope may be reflected and projected to a subject, or light incident from the subject may be reflected and projected to the camera.
  • the space defined in the ring-shaped light source 20 constitutes the aperture 50, which is a channel for guiding the image of the subject- into the endoscope body.
  • the ring-shaped light source 20 is an LED. As described above, the LED has high light efficiency, high directionality, and low power consumption. Consequently, the LED is preferable to use as the light source.
  • FIG. 2 is a view illustrating a first embodiment of the light source shown in FIG. 1.
  • the first embodiment of the ring-shaped light source will be described with reference to FIG. 2.
  • the ring-shaped light source 22 be a single light source emitting white light. More preferably, the ring-shaped light source 22 is an LED. Specifically, white light is emitted from the ring-shaped light source 22, and is then uniformly projected to a subject. Preferably, the ring-shaped light source 22 comprises a single LED. However, it is also possible that a plurality of LED elements are disposed on a PCB substrate, and fluorescent substance is applied to the LED elements, whereby the light has uniform spatial distribution as in the single light source.
  • FIG. 3 is a view illustrating a second embodiment of the light source shown in FIG. 1. Hereinafter, the second embodiment of the ring-shaped light source will be described with reference to FIG. 3.
  • the ring-shaped light source comprise one or more LEDs 24 emitting blue light, and the respective blue-light LEDs 24 are constructed in a ring shape.
  • the ring-shaped light source must be attached to the front surface of the endoscope body. Consequently, when the section of the endoscope body is a polygon or a circle, the blue-light LEDs are arranged in the shape corresponding to the polygon or the circle.
  • the blue-light LEDs 24 are arranged in a ring shape.
  • This embodiment is also characterized by a yellow fluorescent substance layer 26 formed on the blue-light LEDs 24.
  • FIG. 4 is a view illustrating a third embodiment of the light source shown in FIG. 1.
  • the ring-shaped light source comprises one or more white light sources 27.
  • each white light source 27 includes a red light source 27a, a green light source 27b, and a blue light source 27c. More preferably, the respective light sources are LEDs.
  • each white light source 27 includes R, G, and B light sources. When voltage is applied to the respective light sources, R, G, and B lights are emitted from the respective light sources. The emitted R, G, and B lights are combined into white light, which is projected to the subject. Lights emitted from the respective white light sources are combined, and the combined lights are uniformly projected to the subject while the combined lights have uniform spatial distribution.
  • the red, green, and blue light sources are independently driven.
  • the respective light sources can perform the following operations.
  • the respective light sources are independently- driven, it is possible to project only one of the red, green, and blue lights to the subject.
  • the red light when only the red light is emitted, it is possible to increase efficiency for selecting intestinal hemorrhage and atrophy and to easily distinguish blood vessels.
  • the green light when only the green light is projected to the subject, it is possible to easily diagnose a normal mucous membrane in the stomach.
  • the blue light when only the blue light is projected to the subject, it is possible to easily distinguish digestive fluids in the digestive organs.
  • the red light, the green light, and the blue lights are independently emitted as described above, it is possible to project only one desired light to the subject, thereby more accurately acquiring image information of a lesion to be observed.
  • only a blue light source and a yellow light source may be included in order to emit only the white light.
  • FIG. 5 is a perspective view illustrating a fourth embodiment of the light source shown in FIG. 1, and FIG. 6 is a sectional view taken along line I-I' of FIG. 5.
  • the fourth embodiment of the ring-shaped light source will be described with reference to FIGs. 5 and 6.
  • This embodiment is characterized that organic electroluminescence (EL) is used as the ring-shaped light source.
  • the organic EL is a device in which, when electric charge is injected to a light emitting layer formed between an electron injection electrode (a cathode) and a hole injection electrode (an anode) , electrons and holes are recombined in pairs, thereby emitting light.
  • the organic EL is a display device that can be driven at low voltage and with low power consumption.
  • the display surface of the organic EL 20 is formed in a ring shape, and light is emitted from the ring-shaped display surface of the organic EL 20.
  • an aperture 210 is formed in the center of the ring- shaped organic EL.
  • the organic EL is constructed in an upper light emitting structure.
  • the organic EL includes a transparent substrate 220, an anode 230, a hole injection layer 240, a hole transport layer 250, a light emitting layer 260, an electron transport layer 270, an electron injection layer 280, and a cathode 290.
  • the respective components of the organic EL are identical to the conventional components. As holes emitted from the anode 230 and electrons emitted from the cathode 290 are recombined, white light is emitted from the light emitting layer 260.
  • White light emitted from the ring-shaped organic El light source is uniformly projected to a subject while the white light has uniform spatial distribution, thereby improving image information of the subject.
  • the organic EL has rapid response time, high contrast ratio, wide field angle, and low power consumption. Consequently, the organic EL can be driven with low power consumption within short time to uniformly project light to an internal subject, such as digestive organs.
  • an infrared LED may be used as the ring- shaped light source of the endoscope.
  • FIG. 7 is a view illustrating a method for operating an endoscope according to an embodiment of the present invention.
  • the illuminating operation of the endoscope according to the present invention is performed to project white light to a subject.
  • blue light is emitted from a blue light source (S710) , and the emitted blue light is projected to a yellow fluorescent substance (S720) .
  • the yellow fluorescent substance is excited by the blue light.
  • white light is emitted from the yellow fluorescent substance (S730) , and the emitted white light is projected to the subject.
  • the blue light source is an LED emitting blue light.
  • the blue-light LED is an LED emitting visible rays having a wavelength of 400 to 450 nm. When the wavelength is shorter, it is more difficult to develop a compound semiconductor emitting light. For this reason, the blue-light LED has been developed recently. It is possible to realize true color by using the blue-light.
  • a method for operating an endoscope includes selecting one or two light sources from light sources emitting red, green, and yellow lights, and emitting light from the selected light sources to project the emitted light to a subject.
  • each light source is an LED.
  • only one or two light sources are selected, and light emitted from the selected light sources is illuminated to the subject such that only lights having a specific wavelength can be projected to the subject. Consequently, as described above, it is possible to more accurately acquire image information of a specific lesion.
  • the endoscope operating method includes projecting white light from the ring-shaped organic EL light source to a subject and acquiring image information of the subject by means of an image information acquisition unit.
  • the image information acquisition unit includes a camera and a lens. When light emitted from the subject is introduced through the aperture formed in the center of the ring-shaped organic EL light source, the focal distance is adjusted through the lens, and then, image information of the subject is stored in the camera, such as CCD or CMOS.
  • the above-described ring-shaped light source and the method for operating the same can be used in conventional endoscope in addition to the capsule-type endoscope. It is also obvious that the above-described ring- shaped light source and the method for operating the same can be applied to other technical fields in addition to the endoscope, i.e., a video camera that uniformly projects light to a subject and acquires image information of the subject. Furthermore, the endoscope according to the present invention can be used to photograph digestive organs of animals as well as to photograph the internal parts of the human body.
  • the present invention provides the effect of improving the performance of the capsule-type endoscope. Furthermore, an organic EL is used as the light source, and therefore, it is possible to uniformly project light to the subject. Consequently, the present invention provides the effect of acquiring high-quality information.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (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)
  • Endoscopes (AREA)

Abstract

L'invention concerne un endoscope (100) qui comprend une source lumineuse (20) annulaire montée dans un corps de l'endoscope (10) pour projeter vers un sujet une lumière présentant une distribution spatiale uniforme. Selon l'invention, la lumière provenant de la source lumineuse (20) est projetée de manière uniforme vers le sujet pendant une longue durée, ce qui permet d'acquérir des données de grande qualité.
PCT/KR2006/003040 2006-08-02 2006-08-02 Endoscope et son procédé d'exploitation Ceased WO2008016195A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2006/003040 WO2008016195A1 (fr) 2006-08-02 2006-08-02 Endoscope et son procédé d'exploitation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2006/003040 WO2008016195A1 (fr) 2006-08-02 2006-08-02 Endoscope et son procédé d'exploitation

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Publication Number Publication Date
WO2008016195A1 true WO2008016195A1 (fr) 2008-02-07

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PCT/KR2006/003040 Ceased WO2008016195A1 (fr) 2006-08-02 2006-08-02 Endoscope et son procédé d'exploitation

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130162789A1 (en) * 2011-12-22 2013-06-27 Himax Imaging Limited Endoscope with a light source
CN105816143A (zh) * 2016-03-02 2016-08-03 上海理鑫光学科技有限公司 一种用于胶囊内窥镜的导光器件
WO2017197085A1 (fr) * 2016-05-13 2017-11-16 Olympus Corporation Système et procédé d'estimation de profondeur à l'aide d'un capteur d'image mobile et d'une source d'éclairage
US20180206702A1 (en) * 2015-07-22 2018-07-26 Beijing Weston Asia-Pacific Opto-Electric Instrument Co., Ltd. Rigid endoscope
CN113499019A (zh) * 2021-07-15 2021-10-15 江苏华圣伦医疗器械有限公司 一种直径小于1mm的医疗内窥镜
WO2022137005A1 (fr) * 2020-12-21 2022-06-30 Hoya Corporation Dispositif d'éclairage pour endoscopes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004275339A (ja) * 2003-03-14 2004-10-07 United Power Kk チューブ型カメラシステム並びに内外視鏡システム

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004275339A (ja) * 2003-03-14 2004-10-07 United Power Kk チューブ型カメラシステム並びに内外視鏡システム

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130162789A1 (en) * 2011-12-22 2013-06-27 Himax Imaging Limited Endoscope with a light source
US20180206702A1 (en) * 2015-07-22 2018-07-26 Beijing Weston Asia-Pacific Opto-Electric Instrument Co., Ltd. Rigid endoscope
US10653302B2 (en) * 2015-07-22 2020-05-19 Beijing Weston Asia-Pacific Opto-Electric Instrument Co., Ltd. Rigid endoscope
CN105816143A (zh) * 2016-03-02 2016-08-03 上海理鑫光学科技有限公司 一种用于胶囊内窥镜的导光器件
WO2017197085A1 (fr) * 2016-05-13 2017-11-16 Olympus Corporation Système et procédé d'estimation de profondeur à l'aide d'un capteur d'image mobile et d'une source d'éclairage
WO2022137005A1 (fr) * 2020-12-21 2022-06-30 Hoya Corporation Dispositif d'éclairage pour endoscopes
CN116635767A (zh) * 2020-12-21 2023-08-22 豪雅株式会社 用于内窥镜的照明装置
JP2023536672A (ja) * 2020-12-21 2023-08-28 Hoya株式会社 内視鏡用照明装置
JP7521108B2 (ja) 2020-12-21 2024-07-23 Hoya株式会社 内視鏡用照明装置
CN113499019A (zh) * 2021-07-15 2021-10-15 江苏华圣伦医疗器械有限公司 一种直径小于1mm的医疗内窥镜

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