KR101720326B1 - Optical device for pipe inspection where image pickup device is inserted into the tube - Google Patents

Optical device for pipe inspection where image pickup device is inserted into the tube Download PDF

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Publication number
KR101720326B1
KR101720326B1 KR1020150127192A KR20150127192A KR101720326B1 KR 101720326 B1 KR101720326 B1 KR 101720326B1 KR 1020150127192 A KR1020150127192 A KR 1020150127192A KR 20150127192 A KR20150127192 A KR 20150127192A KR 101720326 B1 KR101720326 B1 KR 101720326B1
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KR
South Korea
Prior art keywords
mounting portion
tube
transparent member
imaging element
barrel
Prior art date
Application number
KR1020150127192A
Other languages
Korean (ko)
Other versions
KR20170029962A (en
Inventor
강희신
김용민
Original Assignee
한국기계연구원
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Priority to KR1020150127192A priority Critical patent/KR101720326B1/en
Publication of KR20170029962A publication Critical patent/KR20170029962A/en
Application granted granted Critical
Publication of KR101720326B1 publication Critical patent/KR101720326B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
    • G01N2021/9542—Inspecting the inner surface of hollow bodies, e.g. bores using a probe
    • G01N2021/9546—Inspecting the inner surface of hollow bodies, e.g. bores using a probe with remote light transmitting, e.g. optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/061—Sources
    • G01N2201/06113—Coherent sources; lasers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/08—Optical fibres; light guides
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/08—Optical fibres; light guides
    • G01N2201/0826—Fibre array at source, distributing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/08—Optical fibres; light guides
    • G01N2201/0833—Fibre array at detector, resolving
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10004—Still image; Photographic image

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Astronomy & Astrophysics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Quality & Reliability (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

An optical inspection apparatus for inspecting a tube into which an image pickup element is inserted is provided with an optical fiber bundle in which a plurality of bundled optical fiber bundles are bundled, a laser generator for emitting a laser beam in an optical fiber bundle, a transparent member mounted on an end portion of the optical fiber bundle, And the camera is directly inserted into the tube through the polycarbonate so that the camera is directly exposed to the light reflected inside the tube, thereby eliminating the need for a light path design.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an optical device for inspecting a tube,

The present invention relates to an optical apparatus for inspecting a tube into which an image pickup element is inserted, and more particularly to an optical apparatus for inspecting the inside of a tube by inserting an image pickup element provided in the apparatus for inspecting the inside of the tube into the tube, And an image pickup element capable of being inserted into the tube is inserted into the tube.

The tubular inspected object is inserted into the inspected object from the outside without disassembling, disassembling, or cutting the tubular inspected object on the same principle as that of the medical endoscope, and the inspecting apparatus inserted inside captures the inside of the inspected object And analyzed by analyzing the captured image.

Specifically, the front end of the inspection apparatus is inserted into the hole, and light is irradiated and the image is acquired through the camera, so that the degree of contamination, scratches and plating state by the foreign matter remaining on the inner wall of the tube are examined. At this time, the depth of the inspected object to be inspected is determined according to the length of the inspection apparatus.

Generally, the camera is provided outside the inspection apparatus. Since the camera is located outside the inspection apparatus, the design of the light path that guides the light reflected inside the tube to the camera was necessary for the design of the inspection apparatus.

Korean Registered Patent No. 10-1317947 (Oct.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a camera for inspecting a tube inserted into an inside of a tube, And an optical device.

In order to achieve the above object, an optical device for inspecting a tube in which an image pickup element of the present invention is inserted into a tube is provided with an optical fiber bundle including a plurality of bundled optical fibers, a laser generator for emitting laser light with an optical fiber bundle, And a micro camera incorporated in the transparent member.

Further, the transparent member may be a polycarbonate material.

Further, the bundle of optical fibers is embedded in the barrel, and the laser generator can be attached to the end of the barrel.

The transparent member has a cylindrical shape and has a connecting portion having a diameter equal to the inner diameter of the barrel so as to be inserted into the barrel so as to connect the barrel and the transparent member. The body portion is extended from the connecting portion to have the same diameter as the outer diameter of the barrel. And a mounting portion to which the camera is mounted may be formed at one end of the body portion so as to be symmetrical with the connecting portion.

The mounting portion may be formed so as to protrude from the end of the transparent member so as to have a widthwise area smaller than the widthwise direction of the body portion.

Also, the width of the mounting portion may be less than half the width of the body portion.

In addition, the longitudinal center axis of the mounting portion can be formed vertically on the radius of the body portion.

The mounting portion may have a semi-cylindrical shape in which a portion adjacent to the central axis of the body portion in the side surface of the mounting portion forms a surface and a portion adjacent to the side surface of the body portion in the side surface of the mounting portion is rounded.

In the side surface of the mounting portion, a built-in groove is formed in the vicinity of the central axis of the mounting portion so that the camera is embedded from the side surface of the mounting portion toward the longitudinal central axis of the mounting portion. A wire groove to which a wire connecting a wire can be mounted.

Further, a cut surface at an angle of 45 degrees with the ground surface may be formed at the end of the mounting portion.

Also, the tubular cap may be mounted on the outer side of the mounting portion so that the mounting portion forms an outer shape integrated with the body portion, and a cut surface may be formed at the end of the tubular cap at an angle of 45 degrees with the ground.

According to the optical inspection apparatus for inspecting a tube in which the image pickup element of the present invention is inserted into the inside of the tube, the camera is directly inserted into the inside of the tube through the transparent member so that the camera is directly exposed to the light reflected inside the tube, There is an effect that the optical path design is unnecessary.

Further, the design of the inspection apparatus is easier than in the past, and the manufacturing is also simplified.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exemplary view of a tube inspection optical apparatus in which an imaging element of an embodiment of the present invention is inserted into a tube; Fig.
Fig. 2 is a sectional view of a transparent member included in the tube inspection optical apparatus in which the imaging element of Fig. 1 is inserted into a tube,
3 is a cross-sectional view of the main part of the transparent member included in the tube inspection optical apparatus in which the imaging element of FIG. 1 is inserted into the tube,
4 is an exemplary view of a transparent member included in a tube inspection optical apparatus in which the imaging element of FIG. 1 is inserted into a tube.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that the same components or parts among the drawings denote the same reference numerals whenever possible.

In the following description of the present invention, a detailed description of related arts will be omitted so as not to obscure the gist of the present invention.

As shown in Figs. 1 to 4, an optical inspection apparatus for inspecting a tube into which an image pickup element of the present invention is inserted is provided with an optical fiber bundle 100 in which a plurality of bundled optical fiber bundles 100 are bundled, A transparent member 300 attached to an end of the optical fiber bundle 100 and a micro camera 400 embedded in the transparent member 300. The micro- The camera 400 is preferably a fisheye camera. In one embodiment of the present invention, the transparent member 300 is made of a polycarbonate material.

In one embodiment of the present invention, the optical fiber bundle 100 is embedded in the barrel 110. The barrel 110 is made of plastic or iron, and the inside and the outside are painted in black.

The laser generator 200 is attached to the end of the barrel 110. The laser generator 200 uses an apparatus capable of generating light in the leg, green, blue, and infrared regions. In addition to the laser generator 200, an LED or a light generating device capable of generating a light quantity above a predetermined value can be utilized.

In one embodiment of the present invention, the transparent member 300 is formed in a cylindrical shape. The transparent member 300 includes a connecting portion 310, a body portion 320, and a mounting portion 330.

The connection unit 310 is inserted into the barrel 110 to connect the barrel 110 to the transparent member 300 and receive light from the optical fiber bundle 100. The connection portion 310 is formed to have the same diameter as the inner diameter of the lens barrel 110.

The body portion 320 is extended from the connecting portion 310 to have the same diameter as the outer diameter of the lens barrel 110. [ The light received from the optical fiber at the connection part 310 is emitted to the inside of the tube through the body part 320.

By combining the optical fiber bundle 100 and the transparent member 300, a light emitting path for irradiating light from the outside into the inside of the tube is formed, so that the light emitting path is easily designed and manufactured.

The mounting portion 330 is a portion where the camera 400 is mounted. The mounting portion 330 serves as a focus lens that collects and refracts light reflected from the inside of the tube and irradiates the camera 400 with the refracted light. The mounting portion 330 is formed at one end of the body portion 320 so as to be symmetrical with the connecting portion 310.

The mounting portion 330 is protrudingly formed on the end of the transparent member 300 so as to have a width direction area smaller than the width directional area of the body portion 320.

It is preferable that the width of the mounting portion 330 is less than half the width of the body portion 320 and the longitudinal center axis of the mounting portion 330 is formed perpendicular to the radius of the body portion 320.

The mounting portion 330 may be formed in a side surface of the mounting portion 330 adjacent to the center axis of the body portion 320. The mounting portion 330 may include a side surface of the body portion 320, Is formed in a rounded, semi-cylindrical shape.

The mounting portion 330 is provided with a built-in groove 331 and a wire groove 332 and a tubular cap 334 mounted on the outside of the mounting portion 330. The built-in groove 331 is a space in which the camera 400 is built. The built-in groove 331 is formed toward the longitudinal center axis of the mounting portion 330 from the side surface of the mounting portion 330. [

The wire groove 332 is a space in which a wire connecting the camera 400 and the outside is mounted. The electric wire groove 332 is formed from the built-in groove 331 toward the longitudinal end of the mounting portion 330. [

The tubular cap 334 is mounted on the outside of the mounting portion 330 so that the mounting portion 330 forms an outer shape integrated with the body portion 320. In the tubular cap 334, a camera 400 mounted on the built-in groove 331 and a wire groove 335 on which a wire connecting the outside is mounted are formed.

The mounting portion 330 collects the light reflected from the inner side wall surface, as described above. In order to increase the light collection efficiency, a cut surface 333 having an angle of 45 degrees with the paper surface may be formed at the end of the mounting portion 330. As shown in FIG. 4, at the end of the tubular cap 334, An angled cutting surface 333 may be formed. Further, the rounded side surfaces of the cut surface 333 and the mount portion 330 are preferably surface-processed so as to increase the light-condensing efficiency.

As described above, the tube inspection optical apparatus in which the imaging device according to the present invention is inserted into the tube has been described with reference to the drawings. However, the present invention is not limited to the embodiments and drawings disclosed in the present specification, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

100: optical fiber bundle 110: lens barrel
200: laser generator 300: transparent member
310: connecting portion 320:
330: mounting portion 331: built-in groove
332: electric wire groove 333:
334: tubular cap 335: wire groove
400: camera

Claims (11)

An optical fiber bundle embedded in the inside of the barrel in the form of a plurality of bundled bundles;
A laser generator attached to an end of the barrel to emit a laser beam to the optical fiber bundle;
A cylindrical body having a diameter equal to an inner diameter of the barrel to be inserted into and connected to the barrel; a body extending from the connecting portion to have the same diameter as the outer diameter of the barrel; A transparent member including a mounting portion formed at an end of the body portion, the transparent member being mounted on an end portion of the optical fiber bundle; And
And a micro camera incorporated in the transparent member,
Wherein the transparent member comprises:
A built-in groove is formed in a side surface of the mounting portion adjacent to the central axis of the body portion, the built-in groove in which the micro camera is embedded from the side surface of the mounting portion toward the longitudinal central axis of the mounting portion,
And an electric wire groove to which an electric wire connecting the miniature camera and the outside is mounted from the built-in groove to the longitudinal end of the mounting portion is inserted into the tube.
The method according to claim 1,
Wherein the transparent member is inserted into an inside of a tube of an imaging element made of a polycarbonate material.
delete delete The method according to claim 1,
Wherein,
And an imaging element protruding from the end of the transparent member is inserted into the tube so as to have a width direction area smaller than the width directional area of the body part.
6. The method of claim 5,
And an imaging element whose width is not more than half the width of the body portion is inserted into the tube.
6. The method of claim 5,
Wherein an imaging element having a longitudinal center axis of the mounting portion formed perpendicularly to the radius of the body portion is inserted into the tube.
8. The method of claim 7,
The mounting portion has a semi-cylindrical imaging element in a side surface of the mounting portion adjacent to the central axis of the mounting portion and a portion of the side surface of the mounting portion adjacent to the side surface of the mounting portion is rounded, Optical device for tube inspection.
delete The method according to claim 1,
Wherein the imaging element is inserted into the tube at the end of the mounting portion, the imaging element being formed at a 45 degree angle with the ground.
6. The method of claim 5,
Further comprising a tubular cap mounted on an outer side of the mounting portion so that the mounting portion forms an outer shape integrated with the body portion,
Wherein an end of the tubular cap is formed with a cut surface at an angle of 45 degrees with respect to the plane of the drawing.
KR1020150127192A 2015-09-08 2015-09-08 Optical device for pipe inspection where image pickup device is inserted into the tube KR101720326B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150127192A KR101720326B1 (en) 2015-09-08 2015-09-08 Optical device for pipe inspection where image pickup device is inserted into the tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150127192A KR101720326B1 (en) 2015-09-08 2015-09-08 Optical device for pipe inspection where image pickup device is inserted into the tube

Publications (2)

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KR20170029962A KR20170029962A (en) 2017-03-16
KR101720326B1 true KR101720326B1 (en) 2017-03-28

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1144651A (en) * 1997-07-25 1999-02-16 Koyo Seiko Co Ltd Inspection apparatus for inner surface of hollow member
JP2006034543A (en) * 2004-07-26 2006-02-09 Olympus Corp Endoscope and repairing method of the same
KR20100026136A (en) * 2008-08-29 2010-03-10 주식회사 두배시스템 Apparatus for internal inspection of pipe
KR101041560B1 (en) * 2009-11-30 2011-06-15 주식회사 인트로메딕 Optical device and endoscope having the same
KR101317947B1 (en) 2013-07-04 2013-10-16 이영우 Apparatus for inspecting cylinder

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