WO2016080059A1 - 内視鏡用撮像ユニット - Google Patents
内視鏡用撮像ユニット Download PDFInfo
- Publication number
- WO2016080059A1 WO2016080059A1 PCT/JP2015/076004 JP2015076004W WO2016080059A1 WO 2016080059 A1 WO2016080059 A1 WO 2016080059A1 JP 2015076004 W JP2015076004 W JP 2015076004W WO 2016080059 A1 WO2016080059 A1 WO 2016080059A1
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- WIPO (PCT)
- Prior art keywords
- frame
- unit
- lens
- adhesive
- fitting
- Prior art date
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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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00101—Insertion part of the endoscope body characterised by distal tip features the distal tip features being detachable
-
- 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
-
- 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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00096—Optical elements
-
- 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
- A61B1/00163—Optical arrangements
-
- 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
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- 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
- G02B23/2423—Optical details of the distal end
- G02B23/243—Objectives for endoscopes
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- 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
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
- G02B23/2484—Arrangements in relation to a camera or imaging device
-
- 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
- G02B23/26—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
-
- 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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00105—Constructional details of the endoscope body characterised by modular construction
-
- 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
- A61B1/00163—Optical arrangements
- A61B1/00174—Optical arrangements characterised by the viewing angles
- A61B1/00177—Optical arrangements characterised by the viewing angles for 90 degrees side-viewing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/555—Constructional details for picking-up images in sites, inaccessible due to their dimensions or hazardous conditions, e.g. endoscopes or borescopes
Definitions
- the present invention relates to an endoscope imaging unit having a solid-state imaging device built in an insertion portion of an endoscope.
- endoscopes have been used in the medical field and industrial field.
- An endoscope can perform observation, treatment, and the like by inserting an elongated insertion portion into a thin tube.
- it is required to reduce the diameter of the insertion portion and shorten the hard portion.
- an endoscope imaging unit (hereinafter abbreviated as an imaging unit) is built in the distal end portion of the insertion portion
- an imaging unit an endoscope imaging unit
- the imaging unit is configured by integrating an objective lens unit and an imaging element unit having a solid-state imaging element.
- the image sensor unit is expensive among the units constituting the endoscope.
- the objective lens unit is configured by fixing a plurality of optical members, which are optical members, a spacing ring, a diaphragm, and the like in a lens frame.
- the image sensor unit is connected to a solid-state image sensor such as a CCD or C-MOS (hereinafter abbreviated as an image sensor), a circuit board on which the image sensor and various electronic components are mounted, and the circuit board. And a plurality of signal lines.
- the objective lens unit and the image pickup device unit are configured as an image pickup unit by integrally fixing a lens frame constituting the objective lens unit and a holding frame constituting the image pickup device unit by bonding or bonding. .
- Japanese Patent Application Laid-Open No. 2009-273642 discloses an imaging unit for an endoscope that facilitates alignment of optical performance, improves assembly workability, and improves waterproof and moisture resistance.
- the prism unit is provided with a first lens holding frame fitting portion and a second lens holding frame fitting portion in which the optical axes are aligned.
- the optical axis can be easily adjusted by attaching the first lens holding frame fitting portion to the first lens unit and attaching the second lens holding frame fitting portion to the second lens unit. Assembling workability is improved. Note that the holder tube of the image sensor holder is fitted and fixed to the second lens unit.
- Japanese Patent Laid-Open No. 2006-015076 discloses an imaging apparatus that can reuse components before replacement even when the imaging unit is repaired or replaced.
- a fixing member is used for fixing the lens frame and the CCD holding frame to each other.
- an adhesive or the like is applied to the attachment surface (fitting portion) between the base end side outer peripheral surface of the lens frame and the distal end side inner peripheral surface of the CCD holding frame. It is not used.
- first frame member and the second frame member are provided on the distal end side and the proximal end side with one frame member interposed therebetween, and the frame members are integrally fixed by providing a frame fixing portion by bonding or bonding.
- the fitting area of the first frame fixing portion provided on the distal end side of the frame member is different from the fitting area of the second frame fixing portion provided on the proximal end side of the frame member, and the respective fitting surfaces If the same adhesive is applied to provide the first frame fixing part and the second frame fixing part, the frame fixing part with a small fitting area has a large fitting area when the frame fixing part is broken by applying a load. It is destroyed with a smaller load than the fixed part.
- the present invention has been made in view of the above circumstances, and it is possible to provide a predetermined frame fixing portion without damaging the lens unit and the imaging element unit while realizing a reduction in the diameter of the insertion portion and a shortening of the hard portion.
- An object of the present invention is to provide an imaging unit for an endoscope that can be disassembled and reused after being destroyed.
- An endoscope imaging unit includes a plurality of optical members for guiding light from a subject, an objective lens unit having a plurality of lens frames holding the plurality of optical members, and the light.
- An image sensor unit having a solid-state image sensor for receiving light and a holding frame for holding at least one optical lens, and a first adhesive is applied to a first fitting surface between the lens frames provided in the objective lens unit.
- a second frame fixing portion that is bonded and fixed by applying a second adhesive having a glass transition temperature lower than that of the first adhesive to a second fitting surface having an area.
- the figure explaining the example of 1 structure of the imaging unit for endoscopes The figure explaining the 1st lens unit which comprises an objective lens unit.
- the figure explaining the 2nd lens unit which comprises an objective lens unit.
- the figure explaining the objective lens unit comprised by assembling a prism unit to the 1st lens unit and 2nd lens unit which were assembled
- the figure explaining the assembly of an objective lens unit and an image sensor unit
- attachment state to an image pick-up element holding frame The figure which shows another structure of the 2nd lens frame which comprises a 2nd lens unit, and the assembly
- attachment state to an image pick-up element holding frame The figure explaining the structural example which improves the fixed intensity
- the endoscope imaging unit shown in FIG. 1 is a side-viewing endoscope imaging unit 1.
- the imaging unit 1 includes an objective lens unit 2 and an imaging element unit 3.
- the objective lens unit 2 includes a first lens unit 10, a second lens unit 20, and a prism 31.
- Reference numeral 4 denotes a first frame fixing portion which will be described later, and the lens units constituting the objective lens unit 2 are bonded and fixed to each other.
- Reference numeral 5 denotes a second frame fixing portion to be described later, which bonds and fixes the objective lens unit and the imaging element unit.
- the first lens unit 10 includes a first lens frame 11, a plurality of optical lenses 12, 13, and 14 that are a plurality of optical members, a plurality of apertures 15, 16, and 17, and a spacing ring 18. Yes.
- the first lens frame 11 has a frame body 11m and a connecting portion 11j.
- the connecting portion 11j is a convex portion protruding from the main body base end face 11mr of the frame main body 11m by a predetermined distance in a predetermined direction.
- Reference numeral 11p denotes a prism housing side surface constituting a prism housing portion 30 described later, and reference numeral 11c denotes a cover contact surface described later.
- the connecting portion 11j is provided with a lens frame fixing hole 11h5 which is a through-hole and communicates with the prism accommodating portion 30.
- a small-diameter portion 21a of the second lens frame 21 described later is fitted into the lens frame fixing hole 11h5.
- Reference numeral 11jr is a connecting portion base end surface
- reference numeral 11jf is a connecting portion distal end surface.
- the frame body 11m has a predetermined pipe shape and includes a first frame hole 11h.
- the first frame hole 11h is a stepped through hole, and is formed with a first hole 11h1, a second hole 11h2, a third hole 11h3, and a fourth hole 11h4 in order from the main body front end surface 11mf side, and a first step surface 11s1.
- the second step surface 11s2 and the third step surface 11s3 are provided.
- the main body front end surface 11mf is a plane orthogonal to the central axis of the first frame hole 11h, and the first step surface 11s1, the second step surface 11s2, and the third step surface 11s3 are also planes parallel to the main body front end surface 11mf. It is. Moreover, the hole diameter of each hole is set to a predetermined size, and the first hole 11h1 has the largest diameter, and the second hole 11h2, the third hole 11h3, and the fourth hole 11h4 become smaller in this order. The opening of the first frame hole 11h leading to the prism accommodating portion 30 is the opening of the fourth hole 11h4.
- the third diaphragm 17 and the spacing ring 18 are accommodated in this order in the third hole 11h3, the third diaphragm 17 is disposed on the third step surface 11s3, and the spacing ring 18 is disposed in contact therewith. And are fixed by adhesive.
- the third optical lens 14 is accommodated in the third hole 11h3, placed in contact with the spacing ring 18, and fixed by adhesion.
- the tip of the third optical lens 14 protrudes a predetermined distance from the second step surface 11s2 in a state where the lens 14 is disposed in contact with the spacing ring 18.
- the adhesive is applied to an adhesive reservoir constituted by the second step surface 11s2 and the outer peripheral surface of the tip end portion of the third optical lens 14.
- the spacing ring 18 may be disposed in contact with the third diaphragm 17 without being bonded and fixed.
- the third optical lens 14 is placed in contact with the spacing ring 18 placed in contact, and the third optical lens 14 is bonded and fixed to place the spacing ring 18 in the third hole 11h3.
- the second diaphragm 16, the second optical lens 13, the first diaphragm 15, and the first optical lens 12 are accommodated in order, and the second diaphragm 16 is disposed on the first step surface 11s1 and above it.
- the second optical lens 13, the first diaphragm 15, and the first optical lens 12 are arranged in contact with each other and fixedly bonded.
- the adhesive is applied to the outer peripheral surface of the front end portion of the first optical lens 12 and the front end surface 11mf of the main body that protrudes a predetermined distance from the front end surface 11mf of the main body.
- the configuration of the first lens unit is not limited to the above-described configuration, and the number, size, shape, etc. of the optical lens, the diaphragm, and the interval ring are appropriately set, and the first lens frame suitable for them is set. form. Further, when the first optical lens 12 is fixed by brazing, the first optical lens 12 is subjected to a predetermined plating process in advance.
- the second lens unit 20 includes a second lens frame 21, an optical lens 22 that is a plurality of optical members, a diaphragm 23, and a spacing ring 24.
- the second lens frame 21 is a stepped pipe having a small diameter portion 21a and a large diameter portion 21b.
- the small diameter portion 21a is a fitting portion with the connecting portion 11j of the first lens frame 11, and the large diameter portion 21b is a fitting portion with an imaging element holding frame 45 described later.
- the second lens frame 21 includes a second frame hole 21h.
- the second frame hole 21h is a stepped through hole, and a first hole 21h1, a second hole 21h2, and a third hole 21h3 are formed in this order from the second lens frame base end surface 21r side, and the first step surface 21s1, Two step surfaces 21s2 are provided.
- the second lens frame base end surface 21r is a plane orthogonal to the central axis of the second frame hole 21h, the first step surface 21s1 is an inclined surface, and the second step surface 21s2 is the second lens frame base. It is a plane parallel to the end face 21r.
- the hole diameter of each hole is set to a predetermined size, and the first hole 21h1 has the largest diameter, and the second hole 21h2 and the third hole 21h3 become smaller in this order.
- the diaphragm 23 and the spacing ring 24 are accommodated in this order in the second hole 21h2, the diaphragm 23 is disposed on the second step surface 21s2, and the spacing ring 24 is disposed on the second step surface 21s2 and bonded by an adhesive. Fixed.
- the optical lens 22 is accommodated in the second hole 21h2 and placed in contact with the interval ring 24 and fixed thereto.
- the base end portion of the optical lens 22 projects a predetermined distance from the base end side of the second hole 21h2 in a state where the lens 22 is disposed in contact with the interval ring 24.
- the adhesive is applied to an adhesive reservoir constituted by the first step surface 21 s 1 and the outer peripheral surface of the tip portion of the optical lens 22.
- the spacing ring 24 may be placed in contact with the diaphragm 23 without being bonded and fixed.
- the optical lens 22 is placed in contact with the spaced-apart spacing ring 24, and the optical lens 22 is bonded and fixed to place the spacing ring 24 in the second hole 21h2.
- reference numeral 21f denotes a second lens frame front end surface
- reference numeral 21p denotes a positioning surface.
- the positioning surface 21p is a contact surface that contacts the base end surface 11jr of the connecting portion 11j.
- the first step surface 21s1 is an inclined surface, but the first step surface 21s1 may be a plane parallel to the second lens frame base end surface 21r.
- the configuration of the second lens unit is not limited to the above-described configuration, and the number, size, shape, etc. of the optical lens, the diaphragm, the interval ring are appropriately set, and a second lens frame suitable for them is set. form.
- the assembly of the first lens unit 10 and the second lens unit 20 will be described with reference to FIG.
- the connecting portion 11j provided on the first lens frame 11 constituting the first lens unit 10 and the second lens unit 20 are assembled.
- the small-diameter portion 21a provided on the second lens frame 21 to be configured is bonded and fixed.
- the small diameter portion 21a of the second lens frame 21 is fitted and disposed in the lens frame fixing hole 11h5 of the connecting portion 11j.
- the positioning surface 21p of the second lens frame 21 is disposed in contact with the connecting portion base end surface 11jr of the connecting portion 11j.
- the first adhesive is cured, whereby the small diameter portion 21a of the second lens frame 21 is fixed in the lens frame fixing hole 11h5 of the connecting portion 11j.
- the connecting portion 11j provided in the first lens frame 11 and the small-diameter portion 21a of the second lens frame 21 indicated by the broken line are fixed integrally by the first frame fixing portion 4 formed by curing the first adhesive.
- the first lens unit 10 and the second lens unit 20 are assembled in a predetermined state.
- the first adhesive is applied to the small diameter portion 21a that becomes the first fitting surface of the second lens frame 21.
- the outer peripheral surface of the small diameter portion 21a and the inner peripheral surface of the lens frame fixing hole 11h5 Supplied to the gap.
- the prism 31 is formed in a predetermined shape and includes an incident surface 31a, an exit surface 31b, and a reflective surface 31c.
- Reference numeral 30 denotes an accommodating portion
- reference numeral 32 denotes a cover member.
- the cover member 32 covers the entire prism surface exposed to the outside, such as the reflecting surface 31 c of the prism 31 housed in the prism housing portion 30.
- the prism accommodating portion 30 is provided at a predetermined portion of the first lens frame 11, and the prism 31 is accommodated in the prism accommodating portion 30.
- the incident surface 31 a of the prism 31 accommodated is placed in contact with and fixed to the main body base end surface 11 mr of the first lens frame 11 constituting the first lens unit 10.
- the exit surface 31b of the prism 31 accommodated is disposed in contact with and fixed to the second lens frame tip surface 21f of the second lens frame 21 constituting the second lens unit 20.
- the side surface 31s of the prism 31 is disposed in contact with the prism storage side surface 11p of the prism storage unit 30 in the storage state.
- the reflecting surface 31c and the other surface 31e, which are surfaces other than the incident surface 31a, the emitting surface 31b, and the side surface 31s, of the prism 31 are exposed from the opening of the prism housing portion 30.
- the surface of the prism 31 exposed from the opening portion of the prism accommodating portion 30 is covered with a cover member 32.
- the cover member 32 is formed in a predetermined shape.
- the inner surface 32i of the cover member 32 is divided into a covering region 32ia that covers the prism 31 and a fixed region 32ib that is in contact with and fixed to the cover contact surface 11c.
- the fixing region 32ib is provided on both sides of the covering region 32ia.
- the covering region 32ia covers the reflecting surface 31c and the other surface 31e.
- the objective lens unit 2 is formed by filling the gap 90 between the inner surface 32i and the surface of the prism 31 with a light-shielding adhesive 90.
- the cover member 32 has a light shielding property
- the objective lens unit 2 is formed without filling the adhesive 90. That is, at least one of the cover member 32 and the adhesive 90 has light shielding properties.
- the image sensor unit 3 includes an image sensor 41, a circuit board 42, a centering lens 43 that also serves as a cover member, an optical lens 44, an image sensor holding frame 45, an aperture 46, a shield, and the like.
- a member 47 and a heat shrinkable tube 48 are provided.
- the image sensor 41 is a solid-state image sensor such as a CCD or C-MOS, and is mounted at a predetermined position on the circuit board 42.
- the imaging surface provided on the front surface of the imaging element 41 receives light that has passed through the objective lens unit 2.
- the imaging surface is covered and protected by a transparent centering lens 43.
- One surface of the centering lens 43 is disposed on the front surface of the image sensor 41 and is integrally bonded and fixed to the image sensor 41 with a transparent adhesive.
- One surface of the optical lens 44 is disposed on the front surface of the centering lens 43 and is integrally bonded and fixed to the optical lens 44 with a transparent adhesive.
- the imaging element holding frame 45 has a cylindrical shape and is a fitting portion with the objective lens unit 2.
- the image sensor holding frame 45 has a space portion 45S and a lens arrangement hole 45h.
- the lens arrangement hole 45h is a through-hole passing through the space 45S and the outside, and the optical lens 44 is integrally fixed to the lens arrangement hole 45h by, for example, an adhesive.
- the space portion 45S is a fitting hole into which the large diameter portion 21b of the second lens frame 21 of the second lens unit 20 is fitted.
- a diaphragm 46 is disposed in the fitting hole. The diaphragm 46 is disposed and fixed to the bottom surface 45b of the space 45S.
- the inner surface of the end portion on the front end side of the shield member 47 is disposed, and is fixed integrally to the holding frame 45 by, for example, a conductive adhesive.
- the outer periphery of the shield member 47 is covered with a heat-shrinkable tube 48, and the inner space 46S of the shield member 47 is filled with an insulating sealing resin.
- connection terminals (not shown) provided at predetermined positions of the circuit board 42, signal lines connected to the connection terminals, and the like are omitted.
- the assembly of the objective lens unit 2 and the image sensor unit 3 will be described with reference to FIG.
- the frame 45 is bonded and fixed.
- the large-diameter portion 21b of the second lens frame 21 is fitted and arranged in the space portion 45S of the image sensor holding frame 45 to perform focus adjustment.
- the large-diameter portion 21b of the second lens frame 21 is fixed in the space portion 45S of the image sensor holding frame 45 by curing the second adhesive.
- the second lens frame 21 of the objective lens unit 2 and the image sensor holding frame 45 of the image sensor unit 3 are formed by the second frame fixing portion 5 formed by curing the second adhesive.
- the image pickup unit 1 is integrally fixed and the objective lens unit 2 and the image pickup device unit 3 are integrated.
- the fitting area of the second fitting surface constituted by the outer peripheral surface of the second lens frame 21 constituting the second frame fixing portion 5 and the inner peripheral surface of the image sensor holding frame 45 is first. It is set larger than the fitting area of the first fitting surface constituted by the inner peripheral surface of the lens frame fixing hole 11h5 constituting the frame fixing portion 4 and the outer peripheral surface of the second lens frame 21.
- the second adhesive is an adhesive having a glass transition temperature lower than that of the first adhesive.
- the first adhesive is an epoxy resin material
- the second adhesive is a silicon resin material.
- it is set as the 1st adhesive and the 2nd adhesive which adjusted the glass transition temperature.
- the second adhesive has an outer periphery of the large-diameter portion 21b before the large-diameter portion 21b serving as the second fitting surface is fitted and disposed in the space portion 45S of the image sensor holding frame 45 serving as the second fitting surface. It is applied to the surface in advance, or after the large diameter portion 21b is fitted and arranged in the space portion 45S, it is supplied to the gap between the outer peripheral surface of the large diameter portion 21b and the inner peripheral surface of the space portion 45S.
- the imaging unit 1 that has been assembled is inspected for the presence of dust such as glue residue.
- the imaging unit that is rejected in the inspection (denoted as imaging unit N) is disassembled into the objective lens unit 2 and the imaging element unit 3 without being discarded.
- the worker performs an operation for disassembling the objective lens unit 2 and the imaging element unit 3 while heating the imaging element holding frame 45 and the second lens frame 21 of the imaging unit N with a heater or a burner.
- the resin material when there is a predetermined difference in the glass transition temperature of the resin material, it is heated with a device such as a spot heater.
- a device such as a spot heater.
- the difference in the glass transition temperature of the resin material is small, such as 10 ° C.
- the resin material is heated until reaching a predetermined temperature using a furnace such as a drying furnace. As a result, the disassembly work can be performed stably.
- the temperatures of the second frame fixing unit 5 and the first frame fixing unit 4 also increase.
- the first frame fixing portion 4 and the second frame fixing portion 5 are configured by a first adhesive and a second adhesive having different glass transition temperatures.
- the glass transition temperature of the second adhesive is set lower than the glass transition temperature of the first adhesive. Therefore, the second adhesive of the second frame fixing part 5 starts to soften at a predetermined temperature lower than the first adhesive of the first frame fixing part 4.
- the second frame fixing portion 5 having a large fitting area of the imaging unit N is destroyed, and the objective lens unit 2 and the image sensor unit 3.
- the objective lens unit 2 and the imaging element unit 3 of the imaging unit N can be reused after a predetermined operation.
- the glass transition temperature of the silicon adhesive is generally below zero.
- the decomposition work can be performed without heating in a room temperature environment where the decomposition work is performed.
- the imaging unit 1 that has passed the inspection is attached to the distal end rigid member 81 as shown in FIG. 7A and configured as a side-view type endoscope 80 as shown in FIG. 7B.
- Reference numeral 82 in FIG. 7A denotes an imaging unit opening, and the first lens frame 11 of the imaging unit 1 is attached to the imaging unit opening 82 provided in the distal end rigid member 81.
- Reference numeral 83 denotes an illumination lens, which is fixed to the illumination opening 84.
- Reference numeral 7B is a tip cover, and a tip rigid member 81 is integrally fixed in the tip cover 85.
- Reference numeral 86 denotes a light guide bundle, and the front end surface of the light guide bundle 86 faces the illumination lens 83.
- Reference numeral 87 denotes a bundle holding member, and the bundle holding member 87 is a resin member that holds the light guide bundle 86.
- the holding member 87 is not limited to a resin member, and may be a metal member.
- lens cracking such as cracking or chipping of the first optical lens 12 or lens haze occurs, which hinders observation. There is a risk of coming.
- the side-view type endoscope 80 in which the lens is broken or the lens is clouded is sent for repair.
- the imaging unit 1 is used for the side-view type endoscope 80. Therefore, as described above, by disassembling the imaging unit 1 into the objective lens unit 2 and the imaging element unit 3, the objective lens unit 2 is discarded, and the imaging element unit 3 can be reused. .
- the glass transition temperature of the second adhesive constituting the second frame fixing portion 5 for adhering and fixing the objective lens unit 2 and the image pickup device unit 3 is determined as the lens units 10 and 20 constituting the objective lens unit 2. Is set to be lower than the glass transition temperature of the first adhesive constituting the first connection part 4 for bonding and fixing. As a result, the second frame fixing portion 5 having a large fitting area is destroyed without destroying the first frame fixing portion 4 having a small fitting area, and the imaging unit 1 is changed into the objective lens unit 2 and the imaging element unit 3. It can be easily disassembled.
- a circumferential groove 21g is provided in the large-diameter portion 21b of the second lens frame 21 that is fitted and disposed in the space portion 45S of the image sensor holding frame 45.
- the circumferential groove 21g is provided such that the surface area of the large diameter portion 21b is smaller than the inner surface area of the lens frame fixing hole 11h5 provided in the connecting portion 11j.
- fixed part 5 comprised with a 2nd adhesive becomes smaller than the adhesion area of the 1st frame fixing
- fixed part 5 comprised with the 2nd adhesive whose glass transition temperature is lower than a 1st adhesive is smaller than the adhesion area of the 1st frame fixing
- an adhesive surface portion and a non-adhesive surface portion are provided on the fitting surface 21bf of the large-diameter portion 21b of the second lens frame 21 fitted and disposed in the space portion 45S of the image sensor holding frame 45. It may be.
- the fitting surface 21bf of the large-diameter portion 21b is divided into a circumferential concave portion 21c serving as an adhesive surface portion, a first fitting surface portion 21t1, and a second fitting surface portion 21t2 provided with a circumferential concave portion 21c.
- the circumferential recess 21c is an adhesive reservoir and is provided between the first fitting surface portion 21t1 and the second fitting surface portion 21t2.
- the fitting surface 21bf of the large diameter portion 21b is fitted and disposed in the space portion 45S of the image sensor holding frame 45.
- the first fitting surface portion 21t1 of the large-diameter portion 21b is disposed in contact with the space 45S of the image sensor holding frame 45 with a predetermined fit.
- the width of the circumferential recess 21 c is set so that the adhesion area of the second frame fixing part 5 is smaller than the adhesion area of the first frame fixing part 4.
- the outer peripheral surface of the first fitting surface portion 21t1 that is the non-adhesive surface portion of the large-diameter portion 21b is arranged on the inner peripheral surface of the space portion 45S of the image sensor holding frame 45 without using an adhesive.
- Accurate assembly can be realized.
- the adhesive applied to the circumferential recess 21c enters the gap between the first fitting surface portion 21t1 and the inner circumferential surface of the space portion 45S, passes through the gap, and passes through the second lens frame. It is possible to prevent the waste from exceeding the base end face of 21. As a result, inspection defects that result in waste dust are reduced.
- the first fitting surface portion can be used when the adhesive applied in the circumferential recess 21c is fitted and arranged. It is possible to more effectively prevent dust from passing through 21t1 and entering the base end surface of the second lens frame 21.
- a third fixing portion 6 is provided in addition to the second frame fixing portion 5 as shown in FIG.
- the third fixing unit 6 is configured by applying a second adhesive so as to be in close contact with the first lens frame 11, the second lens frame 21, and the image sensor holding frame 45. According to this configuration, it is possible to realize the imaging unit 1 in which the fixing strength between the objective lens unit 2 and the imaging element unit 3 is improved by providing the third fixing unit 6 in addition to the second frame fixing unit 5.
- the third fixing unit 6 is first destroyed, and then the imaging unit 1 and the objective lens unit 2 are imaged as described above.
- the image sensor unit 3 is reused by being disassembled into the element unit 3.
- a notch portion 11mc is provided at a predetermined portion of the flange portion 11mf of the frame main body 11m constituting the first lens frame 11.
- the outer diameter of the holding frame 45 is extended with respect to the axial center of the frame 45 so that a part of the element holding frame 45 is disposed in the notch 11mc.
- the objective lens unit 2 and the image sensor are fixed by providing and fixing the increased distal end surface of the image sensor holding frame 45 to the connecting portion 11j of the first lens frame 11 by providing the second frame fixing unit 5.
- the imaging unit 1 with improved fixing strength with the unit 3 can be realized.
- the inner peripheral surface 45f of the element frame arrangement space 45S1 of the image sensor holding frame 45 and the side surface of the image sensor 41 are uniform.
- the element frame arrangement space 45S1 is displaced from the position of the solid line to the position of the two-dot chain line.
- the distance L between the inner peripheral surface 45f of the element frame arrangement space 45S1 and the side surface of the image sensor 41 becomes uniform, and the residual stress at the time of curing shrinkage of the sealing resin 49 filled in the uniform space becomes uniform.
- the destruction of the image sensor 41 due to the residual stress can be suppressed.
- the large-diameter portion 21b is configured to be fitted and disposed in the space portion 45S of the image sensor holding frame 45.
- a configuration in which the image sensor holding frame 45 is fitted and disposed in the inner hole of the large diameter portion 21b may be employed.
- the imaging unit 1 is for a side-view type endoscope.
- the imaging unit is not limited to a side-viewing endoscope, and may be a direct-viewing endoscope as shown in FIG.
- the same members as those of the imaging unit 1 described above are denoted by the same reference numerals, and description thereof is omitted.
- An imaging unit 1A for a direct-view endoscope has an objective lens unit 2A and an imaging element unit 3 and is configured.
- the objective lens unit 2A includes a first lens unit 100, a second lens unit 200, a moving lens unit 300, and a connecting frame 311.
- Reference numeral 7 denotes a first frame fixing portion that is fixed by metal bonding such as soldering or brazing.
- reference numeral 8 denotes a second frame fixing portion that is bonded and fixed with an adhesive.
- the first lens unit 100 includes a first lens frame 101, a plurality of optical lenses 102 that are a plurality of optical members, and a diaphragm 103.
- the aperture is not limited to one and may be more than that. Moreover, the structure which provides a space
- the first lens frame 101 has a predetermined pipe shape and includes a first frame hole 104.
- the first frame hole 104 is a stepped through hole having a predetermined shape, and an optical member is appropriately fixed.
- the second lens unit 200 includes a second lens frame 201, a plurality of optical lenses 202 that are a plurality of optical members, and a plurality of stops 103.
- interval ring may be sufficient.
- the second lens frame 201 has a predetermined pipe shape and includes a second frame hole 204.
- the second frame hole 204 is a stepped through hole having a predetermined shape, and an optical member is appropriately fixed.
- the moving lens unit 300 includes a moving lens frame 301, a plurality of optical lenses 302, a diaphragm 303, and a moving lens frame moving mechanism 304.
- the moving lens frame moving mechanism 304 is a well-known technique and will not be described. Further, the aperture is not limited to one and may be more than that. Moreover, the structure which provides a space
- the moving lens frame 301 includes a frame main body 305 and a moving rod 306.
- the frame main body 305 has a cylindrical shape and includes a recess 307 and a third frame hole 308.
- the first lens frame 101 is loosely disposed in the recess 307.
- the third frame hole 308 is an axial through-hole that passes through the recess 307 and the outside, and the optical lens 302 is fixedly provided.
- a diaphragm 303 is fixed to the bottom surface of the recess 307.
- a distal end portion of the moving lens frame moving mechanism 304 is integrally fixed to the moving rod 306.
- the connecting frame 311 has a predetermined pipe shape, and includes a fourth frame hole 312 that is an axial through hole, and a long hole 313 that passes through the fourth frame hole 312 and the outside.
- the long hole 313 is provided at a predetermined position on the side portion of the connecting frame 311 so that the movable rod 306 can be moved forward and backward.
- the first lens frame 101 is fitted and disposed on the tip opening side of the fourth frame hole 312, and is fixed integrally by providing a first frame fixing portion 7 made of metal, for example, solder.
- the second lens frame 201 is fitted and disposed on the proximal end opening side of the fourth frame hole 312, and is integrally fixed by providing the first frame fixing portion 7.
- a frame main body 305 of the moving lens frame 301 is disposed in the fourth frame hole 312 so as to freely advance and retract.
- the second lens frame 201 of the second lens unit 200 that constitutes the objective lens unit 2A and the image sensor that constitutes the image sensor unit 3 The holding frame 45 is bonded and fixed.
- the small-diameter portion 201a of the second lens frame 201 is fitted and arranged in the space portion 45S of the image sensor holding frame 45 to perform focus adjustment.
- the small diameter portion 201a of the second lens frame 201 is fixed in the space portion 45S of the image sensor holding frame 45 by curing the adhesive.
- the second lens frame 201 of the objective lens unit 2A and the image sensor holding frame 45 of the image sensor unit 3 are integrally fixed by the second frame fixing portion 8 formed by curing the adhesive.
- an imaging unit 1A in which the objective lens unit 2A and the imaging element unit 3 are integrated is configured.
- the adhesive is a silicon resin material or an epoxy resin material having a melting point lower than that of solder. Then, the adhesive is applied in advance to the outer peripheral surface of the small diameter portion 201a before the small diameter portion 201a is fitted and arranged in the space portion 45S, or after the small diameter portion 201a is fitted and arranged in the space portion 45S, It is supplied to the gap between the outer peripheral surface of the small diameter portion 201a and the inner peripheral surface of the space portion 45S.
- the assembled imaging unit 1A is inspected for the presence of dust such as glue residue.
- the imaging unit that is rejected in the inspection (denoted as imaging unit NA) is disassembled into the objective lens unit 2A and the imaging element unit 3 without being discarded.
- the operator performs an operation for disassembling the objective lens unit 2A and the image sensor unit 3 while heating the image sensor holding frame 45 and the second lens frame 201 of the image pickup unit NA with a heater or a burner. .
- the temperatures of the metal-bonded first frame fixing portion 7 and the adhesively fixed second frame fixing portion 8 also increase.
- the first frame fixing portion 7 and the second frame fixing portion 8 have different melting points. Therefore, softening starts at a predetermined temperature at which the adhesive of the second frame fixing portion 8 is lower than the solder of the first frame fixing portion 7.
- the second frame fixing portion 8 of the image pickup unit NA is broken, and the objective lens unit 2A and the image pickup device unit are destroyed. It is decomposed into three. As a result, the objective lens unit 2A and the imaging element unit 3 of the imaging unit NA can be reused after a predetermined operation.
- the imaging unit 1A that has passed the inspection is configured as a direct-view endoscope (not shown) attached to a distal end rigid member (not shown).
- the objective lens unit 2A and the imaging element unit 3 are fixed to the second frame fixing portion 8 by adhesive fixing, and the plurality of lens units 100 and 200 constituting the objective lens unit 2A and the coupling frame 311 are fixed.
- the first frame fixing portion 7 of the imaging unit 1A for a direct-view endoscope is a metal joint.
- the first frame fixing portion 7 is composed of the first adhesive
- the second frame fixing portion 8 is composed of the second adhesive.
- the fixing unit 5 may be used.
- the imaging unit 1A is not limited to the one provided with the moving lens frame unit 300, and may be configured such that the moving lens frame unit 300 is unnecessary. Further, the first frame fixing portion 4 by the first adhesive of the imaging unit 1 described above may be used as the first frame fixing portion 7 that is metal bonding.
- the predetermined frame fixing portion is destroyed without disassembling the lens unit and the image pickup element unit, while realizing the reduction in the diameter of the insertion portion and the shortening of the hard portion, and then the disassembly is performed again.
- An endoscope imaging unit that can be used can be realized.
Abstract
Description
撮像ユニットは、対物レンズユニットと、固体撮像素子を有する撮像素子ユニットと、を一体にして構成される。撮像素子ユニットは、内視鏡を構成するユニットの中でも高価である。
これに対して、撮像素子ユニットは、CCD或いはC-MOS等の固体撮像素子(以下、撮像素子と略記する)と、撮像素子及び各種電子部品を実装した回路基板と、回路基板に接続される複数の信号線と、を有して主に構成されている。
しかしながら、特開2009-273642号公報の内視鏡用撮像ユニットでは、検査工程においてゴミの混入を発見したとき、内視鏡使用中においてレンズ割れ或いは曇り易くなった等の不具合が発生したとき、撮像ユニットを構成するレンズユニット及び撮像素子ユニットを破損させること無く分解して再利用することが難しい。
一方、特開2006-015076号公報においては撮像ユニットの修理・交換は可能になるが、レンズ枠とCCD保持枠とを固定するための固定部材が必要になるとともに、固定部材でレンズ枠とCCD保持枠とを固定する作業が繁雑であった。また、固定部材は、挿入部の細径化を困難にする要因にも成り得る。
なお、以下の説明に用いる各図において、各構成要素を図面上で認識可能な程度の大きさとするため、構成要素毎に縮尺を異ならせてあるものもある。即ち、本発明は、これらの図に記載された構成要素の数量、構成要素の形状、構成要素の大きさの比率、及び各構成要素の相対的な位置関係のみに限定されるものではない。
撮像ユニット1は、対物レンズユニット2と、撮像素子ユニット3と、有して構成されている。対物レンズユニット2は、第1レンズユニット10と、第2レンズユニット20と、プリズム31と、備えている。
符号4は、後述する第1枠固定部であって、対物レンズユニット2を構成するレンズユニット同士を接着固定している。符号5は、後述する第2枠固定部であって、対物レンズユニットと撮像素子ユニットとを接着固定している。
接着剤は、本体先端面11mfから予め定めた距離突出した第1光学レンズ12の先端部外周面及び本体先端面11mfに塗布される。
図3に示すように第2レンズ枠21は、小径部21aと大径部21bとを有する段付きパイプである。小径部21aは、第1レンズ枠11の連結部11jとの嵌合部であり、大径部21bは後述する撮像素子保持枠45との嵌合部である。
図4に示す第1レンズユニット10と第2レンズユニット20とを一体に組み付ける際、第1レンズユニット10を構成する第1レンズ枠11に設けられた連結部11jと、第2レンズユニット20を構成する第2レンズ枠21に設けられた小径部21aと、を接着固定する。
なお、プリズム31の側面31sは、それぞれ収容状態において、プリズム収容部30のプリズム収納側面11pに当接配置されている。
カバー部材32は、予め定めた形状に形作られている。カバー部材32の内面32iは、プリズム31を覆う被覆領域32iaと、カバー当接面11cに当接して接着固定される固定領域32ibとに区分されている。
この結果、図5Bの破線に示すように第1レンズ枠11及び第2レンズ枠21に接着固定されたプリズム31と、カバー部材32によって覆われた対物レンズユニット2が形成される。
つまり、カバー部材32または接着剤90のうち、少なくとも一方は遮光性を有する。
撮像素子41は、CCD、或いは、C-MOS等の固体撮像素子であって、回路基板42の予め定めた位置に実装されている。
芯出しレンズ43の前面には光学レンズ44の一面が配置され、透明接着剤によって光学レンズ44に一体に接着固定される。
そして、シールド部材47の外周は、熱収縮チューブ48によって被覆され、シールド部材47の内部空間46S内には絶縁性を有する封止樹脂が充填されるようになっている。
図6に示す対物レンズユニット2と撮像素子ユニット3とを一体に組み付ける際、対物レンズユニット2を構成する第2レンズユニット20の第2レンズ枠21と、撮像素子ユニット3を構成する撮像素子保持枠45と、を接着固定する。
本実施形態において検査において不合格であった撮像ユニット(撮像ユニットNと記載する)は、廃棄されること無く、対物レンズユニット2と、撮像素子ユニット3と、に分解される。
したがって、第2枠固定部5の第2接着剤が第枠1固定部4の第1接着剤よりも低い予め定めた温度で軟化を開始する。
この結果、撮像ユニットNの対物レンズユニット2と撮像素子ユニット3とは予め定めた作業を経て再利用することができる。
図7Aの符号82は撮像ユニット用開口であり、先端硬性部材81に設けられた撮像ユニット用開口82には撮像ユニット1の第1レンズ枠11が取り付けられる。符号83は照明用レンズであり、照明用開口84に固設されている。
この結果、作業者が撮像素子保持枠45及び第2レンズ枠21を加熱して撮像ユニットNを分解するとき、第2枠固定部5を構成する第2接着剤が軟化を開始したとき、加熱時間を短縮して撮像ユニットNの第2枠固定部5を破壊して、よりスムーズに対物レンズユニット2と撮像素子ユニット3とに分解することができる。
本実施形態において、周方向凹部21cの幅は、第2枠固定部5の接着面積が、第1枠固定部4の接着面積より小さくなるように設定されている。
嵌合配置作業時において、周方向凹部21cに塗布されている接着剤が第1嵌合面部21t1と空間部45Sの内周面との隙間に侵入し、その隙間を通過して第2レンズ枠21の基端面を越えてゴミとなることを防止できる。
この結果、接着かすがゴミになる検査不良が低減する。
この構成によれば、第3固定部6を第2枠固定部5に加えて設けたことによって対物レンズユニット2と撮像素子ユニット3との固定強度を向上させた撮像ユニット1を実現できる。
なお、以下で直視型内視鏡用の撮像ユニットの構成について上述した撮像ユニット1と同部材には同符号を付して説明を省略する。
符号7は、第1枠固定部であって半田、ろう付け等の金属接合によって固定する。これに対して、符号8は、第2枠固定部であって接着剤によって接着固定する。
第3枠孔308は、凹部307と外部とを通じる軸方向貫通孔であって、光学レンズ302が固設される。凹部307の底面には例えば絞り303が固設される。移動桿306には、移動レンズ枠移動機構304の先端部が一体固定されている。
そして、第4枠孔312内には移動レンズ枠301の枠本体305が進退自在に配置されている。
本実施形態において検査において不合格であった撮像ユニット(撮像ユニットNAと記載する)は、廃棄されること無く、対物レンズユニット2Aと、撮像素子ユニット3と、に分解される。
この結果、撮像ユニットNAの対物レンズユニット2Aと撮像素子ユニット3とは予め定めた作業を経て再利用することができる。
このように、対物レンズユニット2Aと撮像素子ユニット3との固定を接着固定による第2枠固定部8とし、対物レンズユニット2Aを構成する複数のレンズユニット100、200と、連結枠311との固定を金属接合による第1枠固定部7としたことによって、第1枠固定部7が溶融されること無く、接着剤による第2枠固定部8を破壊して撮像ユニット1Aを対物レンズユニット2Aと撮像素子ユニット3とに容易に分解することができる。
また、上述した撮像ユニット1の第1接着剤による第1枠固定部4を金属接合である第1枠固定部7としてもよい。
Claims (4)
- 被写体からの光を導くための複数の光学部材、及び該複数の光学部材を保持する複数のレンズ枠を有する対物レンズユニットと、
前記光を受光する固体撮像素子、及び少なくとも一つの光学レンズを保持する保持枠を有する撮像素子ユニットと、
前記対物レンズユニットに設けられたレンズ枠同士の第1の嵌合面に第1接着剤を塗布して接着固定される第1枠固定部と、
前記対物レンズユニットのレンズ枠と前記撮像素子ユニットの保持枠との嵌合面であって前記第1の嵌合面の嵌合面積よりも大きな嵌合面積を有する第2の嵌合面に前記第1接着剤よりガラス転移温度が低い、第2接着剤を塗布して接着固定される第2枠固定部と、
を具備することを特徴とする内視鏡用撮像ユニット。 - 前記対物レンズユニットのレンズ枠と前記撮像素子ユニットの保持枠との嵌合部を構成する外周面に、
前記レンズ枠と前記保持枠とを前記第2接着剤によって一体に固定するための接着面部と、
前記レンズ枠と前記保持枠とが直接的に接触する非接着面部と、
を設けたことを特徴とする請求項1に記載の内視鏡用撮像ユニット。 - 前記嵌合部を構成する外周面の中途部に凹部で構成される接着面部を設けたことを特徴とする請求項2に記載の内視鏡用撮像ユニット。
- 被写体からの光を導くための複数の光学部材、及び該複数の光学部材を保持する複数のレンズ枠を有する対物レンズユニットと、
前記光を受光する固体撮像素子、及び少なくとも一つの光学レンズ保持する保持枠を有する撮像素子ユニットと、
前記対物レンズユニットに設けられたレンズ枠同士の第1の嵌合面を金属接合で固定する第1枠固定部と、
前記対物レンズユニットのレンズ枠と前記撮像素子ユニットの保持枠との嵌合面であって前記第1の嵌合面の嵌合面積よりも大きな嵌合面積を有する第2の嵌合面に前記金属接合部材より融点の低い接着剤を塗布して接着固定される第2枠固定部と、
を具備することを特徴とする内視鏡用撮像ユニット。
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JP2016517010A JP6006458B1 (ja) | 2014-11-19 | 2015-09-14 | 内視鏡用撮像ユニット |
EP15861902.3A EP3135181A4 (en) | 2014-11-19 | 2015-09-14 | Endoscope imaging unit |
CN201580029312.8A CN106455924B (zh) | 2014-11-19 | 2015-09-14 | 内窥镜用摄像单元 |
US15/366,005 US9784964B2 (en) | 2014-11-19 | 2016-12-01 | Image pickup unit for endoscope having multiple bonded frames |
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DE102017124593A1 (de) * | 2017-10-20 | 2019-04-25 | Olympus Winter & Ibe Gmbh | Umlenkprismenbaugruppe für ein Endoskop mit seitlicher Blickrichtung, Endoskop und Verfahren zur Montage einer Umlenkprismenbaugruppe |
DE102018115238B4 (de) * | 2018-06-25 | 2021-09-23 | Olympus Winter & Ibe Gmbh | Umlenkprismenbaugruppe für ein Endoskop mit seitlicher Blickrichtung, Endoskop mit seitlicher Blickrichtung und Verfahren zur Montage einer Umlenkprismenbaugruppe |
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- 2015-09-14 CN CN201580029312.8A patent/CN106455924B/zh active Active
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Also Published As
Publication number | Publication date |
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EP3135181A1 (en) | 2017-03-01 |
JP6006458B1 (ja) | 2016-10-12 |
US20170082848A1 (en) | 2017-03-23 |
US9784964B2 (en) | 2017-10-10 |
EP3135181A4 (en) | 2018-02-14 |
JPWO2016080059A1 (ja) | 2017-04-27 |
CN106455924A (zh) | 2017-02-22 |
CN106455924B (zh) | 2018-06-26 |
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