WO2012173515A1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

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Publication number
WO2012173515A1
WO2012173515A1 PCT/RU2012/000272 RU2012000272W WO2012173515A1 WO 2012173515 A1 WO2012173515 A1 WO 2012173515A1 RU 2012000272 W RU2012000272 W RU 2012000272W WO 2012173515 A1 WO2012173515 A1 WO 2012173515A1
Authority
WO
WIPO (PCT)
Prior art keywords
lighting device
crystal
light
fiber bundle
bundle
Prior art date
Application number
PCT/RU2012/000272
Other languages
English (en)
Russian (ru)
Original Assignee
Общество С Ограниченной Ответственностью "Айсберг"
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 Общество С Ограниченной Ответственностью "Айсберг" filed Critical Общество С Ограниченной Ответственностью "Айсберг"
Publication of WO2012173515A1 publication Critical patent/WO2012173515A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2407—Optical details
    • G02B23/2461—Illumination
    • G02B23/2469—Illumination using optical fibres
    • 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]
    • 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
    • A61B1/07—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 using light-conductive means, e.g. optical fibres
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4266—Thermal aspects, temperature control or temperature monitoring
    • G02B6/4268—Cooling
    • G02B6/4272—Cooling with mounting substrates of high thermal conductivity
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4296—Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4249—Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres

Definitions

  • the invention relates to the field of illuminators based on the use of fiber optics and LEDs.
  • the invention relates to illuminators used to illuminate various cavities, including in medical and technical endoscopes (borescopes).
  • medical illuminators as a rule, contain a powerful light source and a fiber optic bundle optically connected with it, transmitting light from the radiation source to a given zone.
  • halogen, metal halide and xenon lamps with a power of 100-150 W and halogen lamps with a power of at least 250 W have been used as sources of light radiation in endoscopes.
  • halogen, metal halide and xenon lamps with a power of 100-150 W and halogen lamps with a power of at least 250 W have been used as sources of light radiation in endoscopes.
  • a large amount of heat is released, which determines their main disadvantage. Since the input end of the fiber lighting bundle must be protected from strong thermal influences, it is necessary to create cooling devices inside the light source.
  • tube light sources The disadvantage of tube light sources is the need to collect the light flux using an optical system, filter it and focus on the input end of the lighting bundle.
  • each LED is optically connected to an individual fiber conductor, stretched to the distal end of the endoscope, where an image sensor is located, the proximal end of which is connected to the tube, at the distal end of which all individual conductors are assembled into a single bundle.
  • the fiber core is located directly in front of the emitting LED, in another embodiment, there is a collection of optics between it and the LED.
  • the design of the illuminator is complex and expensive to manufacture, requires a large consumption of fiber.
  • the tube in which the LEDs are located heats up and heats the distal end of the endoscope.
  • a lighting device contains many light emitting diodes, each of which is connected to a light-conducting fiber core, through which light enters a common radiating surface at the output of the device.
  • the fiber core is located in close proximity to the radiating surface
  • this device also uses additional optics to collect light in order to increase the intensity of the total light flux.
  • the crystal is mounted on a heat sink element. Energy is supplied to the crystal from the battery by wire.
  • the harness is sealed with epoxy in a stainless steel cage. However, the cage may not be necessary if it is not necessary to group the fibers (for example, when instead of a plurality of fibers, one large fiber or a core is used).
  • the polished end of the tow is in contact with the surface of the crystal and is as close to it as technically possible. However, there are light losses.
  • the invention returns to the use of collecting optics, with the tourniquet being placed in close proximity to the lens. This allows you to collect enough light. However, the efficiency of such an optical transmission is low, and as a result, the coverage of the subject of interest will be less than in the previous case.
  • the technical task of the claimed invention is to increase the efficiency of a lighting device based on the use of LEDs and fiber optics, reduce the cost of its manufacture, save electrical energy consumed by the device and simplify its installation in any type of endoscopes and other devices where high-quality lighting of the object in question is required.
  • the lighting device contains a light source installed in the housing in the form of an LED crystal and a light-conducting fiber bundle of high-aperture optical fiber, having a flat end face perpendicular to the fibers and located in close proximity to the radiating surface of the crystal.
  • the proximal end of the fiber bundle is enclosed in a rigid clip, for example, metal.
  • the size of the cross section of the end of the bundle corresponds to the size of the radiating surface of the crystal.
  • the device casing is made of a material with a high coefficient of thermal conductivity, for example, aluminum.
  • the housing includes a sleeve with a Central hole to accommodate the proximal end of the fiber bundle, while the sleeve further has a side hole for the locking screw for fixing the aforementioned fiber bundle.
  • FIG. 1 shows a general view of a lighting device.
  • FIG. 2 ′ is a cross-sectional view of a lighting device along its center line.
  • FIG. 3 schematically shows the relative position of the LED crystal and the fiber bundle, side view.
  • FIG. 4 is a plan view of an LED crystal.
  • the lighting device 1 comprises a housing 2 in which a light source in the form of a crystal 3 of an LED is mounted and fixed.
  • the housing 2 in addition to the main function of the placement and protection of the elements of the device 1 additionally performs the function of a radiator to remove heat generated by the crystal 3 when light is emitted.
  • it is made of a material with a high coefficient of thermal conductivity, and its side surface is provided with ribs.
  • the housing 2 also includes a sleeve 4 fixed therein, in the central opening of which is located the proximal end 5 of the fiber bundle b, which transmits the emitted light to the lighting object.
  • the proximal end 5 of the bundle b is enclosed in a rigid clip 7.
  • the shape of the proximal end 5 of the bundle b has a circular cross section.
  • the clip 7 can be made in the form of a metal tube, for example, stainless steel. Other clip materials may be used, such as metals, heat-resistant alloys, or plastics.
  • the following requirements are imposed on the shape of the bundle at the proximal end: the end of the bundle 8 should be flat, polished and generally perpendicular to the fibers grouped in the ferrule.
  • the shape of the tow at the distal end may be different depending on the purpose of the illuminator, in particular, it can be divided into separate branches to illuminate the object of study from different sides.
  • the fiber bundle b does not have c crystal 3 of direct mechanical contact, but located as close to its radiating surface as technically feasible.
  • the sleeve 4, which serves as a retainer for the proximal end 5 of the fiber bundle b, can be fixed in the housing 2 of the lighting device 1 by any known method, for example, using screws 9.
  • the sleeve 4 has a through hole 10 with a screw thread for the locking screw 11, which provides rigid fixation of the fiber bundle b inside the sleeve, which, in turn, ensures the stability of the interaction of the optical bundle 6 with the crystal 3.
  • FIG. 3 and 4 explain the essence of this interaction.
  • Crystal 3 has the shape of a square (Fig. 2), placed in the center of the standard substrate 12, equipped with
  • the elements 14 are made with leads 15 leading the current to the crystal.
  • the angle of radiation of crystals of the currently known high-power LEDs is approximately 120 ° . Therefore, to prevent loss of emitted light, the angle within which the light can be transmitted by the optical fiber should be approximately the same.
  • the present invention has been embodied as a lighting device for use in a flexible endoscope.
  • the housing of the lighting device was made of aluminum. Its overall dimensions are partially determined by the dimensions, end ..
  • FIG. 1 shows the surface of the endoscope body to which the illuminator is attached.
  • the depth of the illuminator is selected taking into account
  • the lighting device uses a 3 W Cree EZ 1000 LED crystal.
  • the crystal is a square with a side of 1 mm, placed on the above-mentioned standard substrate containing two conductive tracks with leads at their ends for connection to a power source.
  • the luminous crystal surface has the shape of a square with a side ; 960 microns.
  • a light guide bundle with a diameter of 1, 34 mm was made of a LIFaTe C optical fiber having an angular aperture of 120 ° .
  • the harness was carried out using traditional technology.
  • the fibers are assembled in a stainless steel * tube, the outer diameter of which is 2 mm, and the inner diameter is 1.5 mm, the length of the tube is 15 mm.
  • the butt of the formed tourniquet is polished and sealed with epoxy. In this case, the flat surface of the end of the bundle is perpendicular to the fibers filling the bundle.
  • Varying the position of the end of the fiber bundle relative to the surface of the crystal we measured the intensity of the light flux using a photodetector, after which, in the position providing the maximum intensity, the illuminator was mounted on the body of a flexible endoscope, while its distal end was introduced into the trunk of the endoscope .. Amount of light measured a light meter at the distal end of the endoscope, amounted to 15,000 lux, i.e. significantly more than flexible endoscopes available on the modern market:
  • the LOMO video gastroendoscope uses a 2.5 mm diameter fiber with a 60 ° aperture and
  • the amount of light at the distal end of the endoscope is (8000 - 9000) lux.
  • the manufactured sample of the illuminator based on a crystal of a high-power LED and high-aperture fiber required a significantly smaller amount of fiber both in diameter (fiber bundle is approximately 3.4 times thinner) and in length. The latter is explained by the fact that there is no need to guide the fiber from the endoscope body to the illuminator, because The inventive illuminator due to its low heating can be placed directly in the endoscope body, thus, the bundle becomes half as long.
  • Another undoubted advantage is that the flexible endoscope sample prepared by the Applicant does not need a sufficiently complex cooling system, since such a need exists only when using powerful lamps as a light source. At the same time, energy consumption has significantly decreased than in the aforementioned LOMO endoscope.

Landscapes

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

Abstract

Le dispositif d'éclairage comprend une source lumineuse montée dans un corps et se présentant comme un cristal de diode lumineuse puissante ainsi qu'un fil en forme de toron constitué d'une fibre optique à ouverture élevée possédant une extrémité plate perpendiculaire aux fibres. L'extrémité du toron de fibres se situe directement à proximité de la surface rayonnante du cristal. L'extrémité proximale du toron de fibres est placée dans un cartouche rigide, par exemple, en métal. Pour évacuer la chaleur dégagée par la diode lumineuse pendant son fonctionnement le corps du dispositif est fait d'un matériau à conductivité de chaleur élevée, par exemple, en aluminium.
PCT/RU2012/000272 2011-06-14 2012-04-09 Dispositif d'éclairage WO2012173515A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2011124111/28A RU2011124111A (ru) 2011-06-14 2011-06-14 Осветительное устройство
RU2011124111 2011-06-14

Publications (1)

Publication Number Publication Date
WO2012173515A1 true WO2012173515A1 (fr) 2012-12-20

Family

ID=47357316

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2012/000272 WO2012173515A1 (fr) 2011-06-14 2012-04-09 Dispositif d'éclairage

Country Status (2)

Country Link
RU (1) RU2011124111A (fr)
WO (1) WO2012173515A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090818A (zh) * 2015-07-07 2015-11-25 深圳市科曼医疗设备有限公司 光源组件及带有该光源组件的手术灯

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1409793A (en) * 1972-06-08 1975-10-15 Standard Telephones Cables Ltd Light emissive diode to optical fibre coupling
US4613931A (en) * 1984-05-24 1986-09-23 501 Olympus Corporation Portable fiberoptic light source for use in hazardous locations
US6921920B2 (en) * 2001-08-31 2005-07-26 Smith & Nephew, Inc. Solid-state light source
US20050251119A1 (en) * 2004-05-07 2005-11-10 Muniz Engineering, Inc. Illuminated stylet
US7229201B2 (en) * 2003-03-26 2007-06-12 Optim Inc. Compact, high-efficiency, high-power solid state light source using a single solid state light-emitting device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1409793A (en) * 1972-06-08 1975-10-15 Standard Telephones Cables Ltd Light emissive diode to optical fibre coupling
US4613931A (en) * 1984-05-24 1986-09-23 501 Olympus Corporation Portable fiberoptic light source for use in hazardous locations
US6921920B2 (en) * 2001-08-31 2005-07-26 Smith & Nephew, Inc. Solid-state light source
US7229201B2 (en) * 2003-03-26 2007-06-12 Optim Inc. Compact, high-efficiency, high-power solid state light source using a single solid state light-emitting device
US20050251119A1 (en) * 2004-05-07 2005-11-10 Muniz Engineering, Inc. Illuminated stylet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090818A (zh) * 2015-07-07 2015-11-25 深圳市科曼医疗设备有限公司 光源组件及带有该光源组件的手术灯
CN105090818B (zh) * 2015-07-07 2017-12-12 深圳市科曼医疗设备有限公司 光源组件及带有该光源组件的手术灯

Also Published As

Publication number Publication date
RU2011124111A (ru) 2012-12-20

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