CN103941355B - Coaxial optical fiber head, optical fiber sensor, and method for manufacturing coaxial optical fiber head - Google Patents
Coaxial optical fiber head, optical fiber sensor, and method for manufacturing coaxial optical fiber head Download PDFInfo
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- CN103941355B CN103941355B CN201310584958.5A CN201310584958A CN103941355B CN 103941355 B CN103941355 B CN 103941355B CN 201310584958 A CN201310584958 A CN 201310584958A CN 103941355 B CN103941355 B CN 103941355B
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 245
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000000452 restraining effect Effects 0.000 claims description 36
- 230000003287 optical effect Effects 0.000 claims description 20
- 239000000835 fiber Substances 0.000 claims description 15
- 239000012790 adhesive layer Substances 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 2
- 230000001070 adhesive effect Effects 0.000 claims 2
- 239000002184 metal Substances 0.000 abstract description 3
- 239000007767 bonding agent Substances 0.000 description 20
- 238000001514 detection method Methods 0.000 description 17
- 238000003780 insertion Methods 0.000 description 11
- 230000037431 insertion Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000012966 insertion method Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/3616—Holders, macro size fixtures for mechanically holding or positioning fibres, e.g. on an optical bench
- G02B6/3624—Fibre head, e.g. fibre probe termination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
- G01V8/16—Detecting, e.g. by using light barriers using one transmitter and one receiver using 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
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of 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
- G02B6/4246—Bidirectionally operating package structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Optical Transform (AREA)
- Geophysics And Detection Of Objects (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to a coaxial optical fiber head, an optical fiber sensor, and a method for manufacturing the coaxial optical fiber head. The coaxial optical fiber head (30), comprising: a metal tip fitting (60) provided with a cylindrical part (65) having an axial opening (66) that opens in the front; a cylindrical inner component (70) mounted to the axial opening (66) of the cylindrical part (65); a coaxial optical fiber strand (40) in which a plurality of optical fiber strands (43) on one side is arrayed on a concentric circle about an optical fiber strand (41) on the other side among the optical fiber strands for projecting light or receiving light, the coaxial optical fiber strand (40) being mounted in the metal tip fitting (60) while inserted into the inner part (70); and a fastening layer (77) formed inside the inner component (70) and used for fastening the coaxial optical fiber strand (40) inserted into the inner component (70) in a non-displaceable state. A position-restricting part (75) for restricting the position of the optical fiber strands (43) on the one side is formed at equidistant intervals in the peripheral direction in the internal peripheral wall of the inner component (70), and the position-restricting part (75) has a rectilinear shape along the axial direction of the inner component (70).
Description
Technical field
The present invention relates to improve the technology of the arranged in co-axial alignment precision of optical fiber cable.
Background technology
Fibre Optical Sensor is irradiated detection light towards detection zone using the optical fiber head being made up of optical fiber cable, receives its anti-
Light is penetrated, so as to detect the presence or absence of object in detection zone.For this Fibre Optical Sensor optical fiber head just like following patents
Described in document 1 and following patent documentations 2, a plurality of light is configured with the concentric circular centered on the optical fiber cable of light projector
The optical fiber head of the coaxial type of optical fiber cable.
Prior art literature
Patent documentation 1：Japanese Unexamined Patent Publication 7-234319 publication
Patent documentation 2：Japanese Unexamined Patent Publication 2002-82228 publications
The content of the invention
In order to improve the accuracy of detection of Fibre Optical Sensor, as shown in figure 23, preferably in the optical fiber cable F1 with light projector is
To configure the optical fiber cable F3 of light at equal intervals on the concentric circular of the heart, the arranged in co-axial alignment precision of optical fiber cable F1, F3 is improved.However,
It was in the past to utilize aperture D1 and the optical fiber footpath of optical fiber cable F1, F3 for installing the accessory M sides of optical fiber cable F1, F3（The diameter of line）
Correlation obtaining the construction of the arranged in co-axial alignment precision of optical fiber cable F1, F3.On the other hand, the aperture D1 and optical fiber cable of accessory M sides
There is machining deviation in the optical fiber footpath of F1, F3（So-called tolerance）, so minimum for tolerance for tolerance maximum, optical fiber footpath in aperture D1 sides
In the case of, as shown in figure 24, exist and produce deviation on the optical fiber cable F1 of light projector, the position of the optical fiber cable F3 of light, together
Axle arrangement precision reduces such problem.
The present invention is completed based on above-mentioned situation, for the purpose of the arranged in co-axial alignment precision for improving optical fiber cable.
According to the coaxial type optical fiber head of this disclosure, possess：Front end accessory, possesses the axis hole with front openings
Cylindrical portion；The internal part of cartridge type, is installed on the above-mentioned axis hole of above-mentioned cylindrical portion；Coaxial type optical fiber cable, inserts in above-mentioned interior
Installed relative to above-mentioned front end accessory in the state of portion's part, and with any one in the optical fiber cable of light projector use or light
Centered on the optical fiber cable of side, the optical fiber cable of a plurality of the opposing party is arranged on concentric circular；And adhesive layer, it is formed at above-mentioned inside portion
In part, and the interior above-mentioned coaxial type optical fiber cable for inserting in above-mentioned internal part is fixed as being unable to the state of displacement, in above-mentioned inside
The position limit in the circumferential position limitation being carried out with the optical fiber cable being formed with equal intervals to above-mentioned the opposing party on the internal perisporium of part
Portion processed, and above-mentioned position restraining portions is the axial rectilinear form along above-mentioned internal part.
In this composition, the position of the position restraining portions limit fibre line of internal part is arranged at, so being not likely to produce optical fiber
The deviation of line（It is eccentric）.Therefore, it is possible to improve the arranged in co-axial alignment precision of optical fiber cable.Also, each optical fiber cable is by adhesive layer with coaxial
The state of arrangement is fixed, so when using, the position relationship without optical fiber cable changes and the destroyed situation of arranged in co-axial alignment.Separately
Outward, position restraining portions is in the axial rectilinear form along internal part, so being inserted in the optical fiber of the opposing party of internal part
Line copies position restraining portions and becomes rectilinear form.Therefore, the inside of the optical fiber cable of the opposing party internally part is not flexible, from
And improve arranged coaxial precision.If in addition, in advance position restraining portions is formed as into rectilinear form, when inserting to internal part,
Position restraining portions also serves as the guiding piece function for guiding optical fiber cable to axial front side, so have easily inserting optical fiber cable
Enter the advantage to internal part.
As the composition that the embodiment of above-mentioned coaxial type optical fiber head is preferably following.
Position restraining portions is set to be section circle shape.So, in forward end accessory（Internal part）During insertion optical fiber cable, even if
Optical fiber cable is contacted with position restraining portions, is not easy to that optical fiber cable is caused to damage, nor easily causes deformation etc..
Be configured to, internally the outer peripheral face of part is provided with ridge, the ridge by with the axis hole for being formed at cylindrical portion
Hole wall is abutted, so as to be entered internal part relative to cylindrical portion in the center of the internal part mode consistent with the center of cylindrical portion
Row positioning.In such manner, it is possible to internal part and optical fiber cable are positioned relative to front end accessory（Positioned in the mode that center is consistent）.
Therefore, it is possible to improve the accuracy of detection of Fibre Optical Sensor.
Be configured to, internally the front end of part is provided with head, the head has locating surface, the locating surface by be formed at
The peritreme of the axis hole of cylindrical portion is abutted, so as in the center of the internal part mode consistent with the center of cylindrical portion by internal part
Relative to above-mentioned cylindrical portion positioning.If in such manner, it is possible to internal part and optical fiber cable are positioned relative to front end accessory（With center
Consistent mode is positioned）.Therefore, it is possible to improve the accuracy of detection of Fibre Optical Sensor.
According to the manufacture method of the coaxial type optical fiber head of this disclosure, the coaxial type optical fiber head be will be used with light projector or
The optical fiber cable of a plurality of the opposing party is arranged on concentric circular centered on the optical fiber cable of any one party in the optical fiber cable of person's light
Coaxial type optical fiber cable be arranged on front end accessory on, the manufacture method of above-mentioned coaxial type optical fiber head is characterised by possessing following
Step：By in the circumferential forming the function and axially of the position for playing the optical fiber cable for limiting above-mentioned the opposing party at equal intervals
The internal part of the cartridge type of the position restraining portions of linearly extended shape is relative to the above-mentioned tubular for being formed at above-mentioned front end accessory
The step of portion is installed；The para-position in the way of the optical fiber cable of above-mentioned the opposing party is accommodated between above-mentioned position restraining portions, and
By leading section through above-mentioned internal part cylindrical portion in the way of by light projector use and light optical fiber cable be assembled in it is above-mentioned before
The step of end accessory；To the light projector use through above-mentioned cylindrical portion and the leading section adhesive-applying of the above-mentioned optical fiber cable of light
The step of；By the step of the above-mentioned optical fiber cable of leading section adhesive-applying retracts above-mentioned internal part side；And after retracting
Remove from the part of the front end face protrusion of above-mentioned cylindrical portion and draw the front end of above-mentioned optical fiber cable with the front end face of above-mentioned cylindrical portion
Flat step.
In view of the bonding agent to internal part filling operation for example in the advance that optical fiber cable is inserted into internal part
OK.If however, being pre-charged with bonding agent, internally Cat-in resisting force during part insertion optical fiber cable all becomes big, group anyway
Dress workability is poor.On the aspect, in the manufacture method of the coaxial type optical fiber head according to this disclosure, optical fiber cable is passed through first
Wear and be inserted into front end accessory（Internal part）, afterwards, the optical fiber cable of the adhesive-applying on leading section is retracted into internal part
Inner side, so as to bonding agent is filled into into internal part.So, Cat-in resisting force when optical fiber cable to be inserted into internal part diminishes,
So assembleability is good, manufacture efficiency is high.Also, position restraining portions is in the axial rectilinear form along internal part, so
In forward end accessory（Internal part）Insert or play a role as guiding piece when retracting optical fiber cable.Therefore, assembleability enters one
Step is good, and manufacture efficiency is high.
Invention effect
In accordance with the invention it is possible to improve the arranged in co-axial alignment precision of optical fiber cable.And, it is possible to increase the assembling operation of optical fiber head
Property.
Description of the drawings
Fig. 1 applies to the block diagram of the Fibre Optical Sensor of embodiment.
Fig. 2 is the axonometric chart of coaxial type optical fiber head.
Fig. 3 is the vertical sectional view of front end accessory.
Fig. 4 is the line A-A sectional view in Fig. 3.
Fig. 5 is to observe the axonometric chart of front end accessory from rear（Represent the figure of the non-installment state of cover）.
Fig. 6 is to observe the axonometric chart of internal part from rear.
Fig. 7 is the axonometric chart from forward observation internal part.
Fig. 8 is the enlarged drawing of Fig. 4.
Fig. 9 is the vertical sectional view of internal part.
Figure 10 is the front view of internal part.
Figure 11 is the right view of internal part.
Figure 12 is the left view of internal part.
Figure 13 is the upward view of internal part.
Figure 14 is the rearview of internal part.
Figure 15 is the top view of internal part.
Figure 16 is the axonometric chart of the construction for representing plug.
Figure 17 is the figure of the manufacturing process for representing coaxial type optical fiber head（Represent the figure of first step）.
Figure 18 is the figure of the manufacturing process for representing coaxial type optical fiber head（Represent the figure of second step）.
Figure 19 is the figure of the manufacturing process for representing coaxial type optical fiber head（Represent the figure of third step）.
Figure 20 is the figure of the manufacturing process for representing coaxial type optical fiber head（Represent the figure of four steps）.
Figure 21 is the figure of the manufacturing process for representing coaxial type optical fiber head（Represent the figure of the 5th step）.
Figure 22 is the figure of the manufacturing process for representing coaxial type optical fiber head（Represent the figure of the 6th step）.
Figure 23 is the sectional view of coaxial type optical fiber head（Represent the figure of the state of the deviation without line）.
Figure 24 is the sectional view of coaxial type optical fiber head（Represent the figure of the state that deviation is produced on line）.
In figure：
10- Fibre Optical Sensors；20- sensor main bodies portion；30- coaxial type optical fiber heads；40- coaxial type optical fiber cables；41- light projectors
Optical fiber cable；The optical fiber cable of 43- light；60- front ends accessory；65- cylindrical portions；70- internal parts；71- ridges；72- heads
Portion；75- position restraining portions；77- adhesive layers；80- plugs；U- hardening bonding agents.
Specific embodiment
＜ embodiment ＞
According to Fig. 1 to Figure 22, one embodiment of the present invention is illustrated.
1. the construction of Fibre Optical Sensor 10
Fig. 1 is the block diagram of the composition for representing Fibre Optical Sensor 10.Fibre Optical Sensor 10 possess sensor main body portion 20, by
The coaxial type optical fiber head 30 in sensor main body portion 20 is installed in plug 80.Should illustrate, " the connecting equivalent to the present invention of plug 80
Meet device portion " example.
Sensor main body portion 20 possesses the substantially housing 20A in box.The inside of housing 20A be provided with light-projecting portion 21,
Light projector circuit 22, light accepting part 23, light receiving circuit 24, control circuit 27.Light-projecting portion 21 is for example by the throwing of LED or laser diode etc.
Optical element is constituted, and plays the function to the detection zone irradiation light of regulation by the optical fiber cable 41 of light projector.Light projector circuit 22 is
Respond the instruction from control circuit 27 to drive the drive circuit of light-projecting portion 21.
Light accepting part 23 is for example made up of the photo detector of optical transistor etc., play by light with optical fiber cable 43 connecing
By the function of the reflected light from detection zone.Light receiving circuit 24 plays output level corresponding with the light income of light accepting part 23
By the function of optical signal.Control circuit 27 plays the threshold value ratio of the level by the optical signal and regulation that will be exported from light receiving circuit 24
Compared with, so as to judge detection zone in object position or the function that whether there is.
Fig. 2 is the axonometric chart of coaxial type optical fiber head 30.Coaxial type optical fiber head 30 possesses coaxial type optical fiber cable（Light Off ァ イ バ
ー element Line）40th, insert in outward the outside of coaxial type optical fiber cable 40 protection pipe 50, coaxial type optical fiber cable 40 front end install before
End accessory 60, internal part 70 and the plug 80 installed in the end of coaxial type optical fiber cable 40.Should illustrate, shown in Fig. 2
Symbol 90 is the pattern pipe for recording the model number of product etc..
Fig. 3 is the vertical section of front end accessory 60, and Fig. 4 is the line A-A sectional view of Fig. 3.Coaxial type optical fiber cable 40 includes throwing
It is the optical fiber cable 41 of light, a plurality of（In the example, 9）Light optical fiber cable 43.The line diameter ratio of the optical fiber cable 43 of light is thrown
The line footpath of the optical fiber cable 41 of light is little, and in the example, the line footpath of the optical fiber cable 43 of light is the line footpath of the optical fiber cable 41 of light projector
About 1/2 size.As shown in Fig. 4, Fig. 8, the optical fiber cable 43 of light is arranged at equal intervals in the optical fiber relative to light projector
The concentric circular of line 41（Circle centered on the central point of optical fiber cable 41）On L.In this specification, with equal intervals by the row of optical fiber cable 43
It is listed on the concentric circular L centered on optical fiber cable 41 and is referred to as arranged in co-axial alignment.
Front end accessory 60 is the accessory for coaxial type optical fiber cable 40 to be installed on the installation position of regulation（It is metal to match somebody with somebody
Part）, in the front side of the fitment body 61 for being substantially in block type（Left side in Fig. 3）It has been formed with cylindrical portion 65.In fitment body 61
Inside is provided with the incorporating section 63 of storage coaxial type optical fiber cable 40.Incorporating section 63 penetrates into lower section in fitment body 61, becomes and will protect
The composition that the coating coaxial type optical fiber cable 40 of pillar 50 is drawn downwards.In addition, being provided with cover behind fitment body 61
67.Under the uninstalled state of cover 67, as shown in figure 5, side is unlimited shape behind the incorporating section 63 of fitment body 61
State, so become the front end of coaxial type optical fiber cable 40 can be inserted into the composition of cylindrical portion 65 from side below.
As shown in Figure 2 and Figure 3, cylindrical portion 65 is arranged on the position in the portion somewhat on the upper side of central authorities of the front face side of fitment body 61,
In the shape that level extends as the crow flies.Cylindrical portion 65 has the axis hole 66 for being inserted and fixed coaxial type optical fiber cable 40.Axis hole 66
Rear end side connect with the incorporating section 63 of fitment body 61, front is in front openings.
The position at the forward end in the axis hole 66 of cylindrical portion 65 is formed at is accommodated with internal part 70.Fig. 6, Fig. 7 are interior
The axonometric chart of portion's part 70, Figure 10 to Figure 15 is the hexahedro view of internal part 70.Internal part 70 is synthetic resin system, in edge
It is axially formed at the cartridge type of the through hole 73 of fore-and-aft direction insertion.As shown in fig. 6, internally the periphery wall of part 70 is axially
It is formed with 3 ridges 71.The ridge 71 plays the center with the center of cylindrical portion 65 and internal part 70（More specifically, shape
Into the through hole 73 in internal part 70 center relative to the axis hole 66 for being formed at cylindrical portion 65 center）Consistent mode,
The function that internal part 70 is positioned relative to cylindrical portion 65.That is, it is configured to be formed at 3 ridges 71 of internal part 70 and shape
Hole wall into the axis hole 66 in cylindrical portion 65 is felt relieved with 3 points of contacts so as to be formed at the center of through hole 73 of internal part 70
It is the state consistent with the center of the axis hole 66 for being formed at cylindrical portion 65.On the other hand, ridge 71 is formed at equal intervals in the circumferential,
In general triangular（With reference to Fig. 6）.
In addition, internally the front end of part 70 is provided with the head 72 in big footpath.The head 72 in big footpath diametrically becomes towards rear
Thin cone shape.The head 72 is played identically with ridge 71 makes the center of internal part 70 consistent with the center of cylindrical portion 65
Function.
That is, the taper seat 72A of head 72 is abutted with the peritreme of axis hole 66, so as to by internal part 70 towards cylindrical portion 65
Center is felt relieved, it is possible to being positioned in the center of internal part 70 mode consistent with the center of cylindrical portion 65.Should
Explanation is given, if the peritreme for making axis hole 66 in advance is also taper seat, can be by internal part 70 relative to the high accuracy of cylindrical portion 65
Felt relieved, it is advantageous to.Should illustrate, taper seat 72A is an example of " locating surface " of the present invention.
And, it is configured to, the leading section inleakage part 70 for being inserted in the coaxial type optical fiber cable 40 of cylindrical portion 65 is passed through
Through hole 73 simultaneously makes line（Plain Line）Front end is from the state of the front end face 65A face forwards of cylindrical portion 65 by aftermentioned adhesive layer 77
It is fixed.
And as shown in Figure 7, Figure 8, be formed with towards as hole in the hole wall of the through hole 73 for being formed at internal part 70
The position restraining portions 75 that the inner side at center projects.Position restraining portions 75 be configured in it is same centered on the optical fiber cable 41 of light projector
The heart justifies the optical fiber cable 43 of the light on L accordingly in the circumferential to be formed at equal intervals.
As shown in figure 8, the position restraining portions 75 is located at being configured between each optical fiber cable 43 on concentric circular L, playing will be each
The function that optical fiber cable 43 is positioned in the circumferential.By so, compared with the situation of position restraining portions 75 is not provided with, being prevented from
The deviation of the optical fiber cable 43 of light, it is thus possible to improve the arranged in co-axial alignment precision of coaxial type optical fiber cable 40.Should illustrate, coaxially
Arrangement high precision refers to that the center of optical fiber cable 41 is consistent with the center of cylindrical portion 65, and each optical fiber cable 43 of light is with light
State on concentric circular L centered on fine line 41 to configure at equal intervals.
In addition, position restraining portions 75 is in section circle shape（Substantially semi-circular shape）.It is toroidal by making section in advance,
When optical fiber cable 41,43 is inserted into internal part 70, even if optical fiber cable 41,43 contact position limiting units 75, are not easy to optical fiber cable
41,43 cause to damage, nor easily cause deformation etc..
In addition, as shown in figure 8, being internally filled with resin system in the through hole 73 of part 70（It is ring as an example
Oxygen tree fat etc.）Hardening bonding agent U.Hardening bonding agent U-shaped is into bonding the adhesive layer 77 of each optical fiber cable 41,43 so that position
Without departing from.Assume, in the case where adhesive layer 77 is not provided with, each optical fiber cable 41,43 in the inside of part 70 internally can be caused
Situation that is mobile and making the reduction of arranged in co-axial alignment precision, but by arranging adhesive layer 77, each optical fiber cable as present embodiment
41st, 43 position is fixed such that it is able to improve arranged in co-axial alignment precision.
In addition, each optical fiber cable 41,43 is remained from other optical fiber cables 41,43 or internal part 70 by adhesive layer 77 separating
State.If each optical fiber cable 41,43 is contacted with internal part 70 or other optical fiber cables 41,43, certain opportunity applies outer
During power, it is possible to which optical fiber cable 41,43 is interfered strongly and damaged, Huo Zheyin with internal part 70 or other optical fiber cables 41,43
Play deformation.
At that point, by as in the present embodiment, each optical fiber cable 41,43 being remained and others by adhesive layer 77
Optical fiber cable 41,43 or the detached state of internal part 70, then can protect each optical fiber cable 41,43, even if applying on certain opportunity
External force, it is also possible to avoid each optical fiber cable 41,43 from being deformed, or damage.
In addition, as shown in figure 9, position restraining portions 75 is in along the axial direction of internal part 70（Fore-and-aft direction）Linear
Shape, is formed at the scope to central part from the position at the forward end of through hole 73.By in advance by the shape of position restraining portions 75
Become rectilinear form, thus the optical fiber cable 43 for being inserted into internal part 70 copies position restraining portions 75 and becomes rectilinear form.Cause
This, the inside of the internally part 70 of optical fiber cable 43 is not flexible, and arranged coaxial precision is uprised.In addition, if position is limited in advance
Portion processed 75 is formed as rectilinear form, then when inserting relative to through hole 73, position restraining portions 75 is also served as optical fiber cable 43 to axle
To the guiding piece function of front side guiding, so having the advantages that easily optical fiber cable 43 to be inserted into into internal part 70.
If returning Fig. 1, Fig. 2 to go on to say, plug 80 is installed on the terminal part of coaxial type optical fiber cable 40.In plug 80
Bottom be provided with pair of right and left insertion section 81,83.Become the and of optical fiber cable 41 for inserting light projector respectively in each insertion section 81,83
The structure of the optical fiber cable 43 of light（With reference to Figure 16）.Become the front side wall in sensor main body portion 20 and be formed with locking-type plug 80
Receiving portion（Omit diagram）, the structure that plug 80 is inserted receiving portion and can be locked.
And, in the state of plug 80 to be inserted sensor main body portion 20, as shown in figure 1, being inserted into insertion section 81
The optical fiber cable 41 of light projector is located at the front of light-projecting portion 21, and the optical fiber cable 43 for being inserted into the light of insertion section 83 is located at light accepting part
23 front.Therefore, if projecting light from light-projecting portion 21, the light can be irradiated to regulation by the optical fiber cable 41 of light projector
Detection zone.In addition, the reflected light that can be emitted onto the light of detection zone imports light accepting part by the optical fiber cable 43 of light
23 and make its light.
In the present embodiment, as shown in Fig. 2 cutting with spiral shell on the outer peripheral face located at the cylindrical portion 65 of front end accessory 60
Stricture of vagina, so in the installation position that coaxial type optical fiber head 30 is fixed on regulation（In the example, panel 100）In the case of, by cylinder
After shape portion 65 is inserted on the installing hole 110 for be formed at panel 100, fastened with bolt such that it is able to solid relative to panel 100
Determine front end accessory 60.
After the fixation of front end accessory 60, if the optical fiber cable 41 for driving light-projecting portion 21 and passing through light projector shines to detection zone
Light is penetrated, if then there is object in detection zone, in body surface reflected light.And, in the reflection of body surface reflection
A part for light imports light accepting part 23 by the optical fiber cable 43 of light, becomes the water by optical signal of the output of light receiving circuit 24
The state of the flat threshold value for exceeding regulation.
On the other hand, in the case of there is no object in detection zone, the reflection without light, almost without by light accepting part
The light of 23 light, so becoming the state of the level by optical signal less than the threshold value of regulation of the output of light receiving circuit 24.Therefore, lead to
Cross and will be compared with the threshold value of regulation by the level of optical signal using control circuit 27, can determine that the object in detection zone
Position or whether there is.
2. the manufacture method of coaxial type optical fiber head 30
Coaxial type optical fiber head 30 is manufactured by 7 following steps.First, in a first step, carry out relative to front
The cylindrical portion 65 of end accessory 60 installs the operation of internal part 70.Internal part 70 after outer peripheral face adhesive-applying C, relative to
The axis hole 66 of cylindrical portion 65 of front end accessory 60 is formed at from front side（The left side of Figure 17）Insertion.
Internal part 70 is being inserted in cylindrical portion 65, then the moment that internally entirety of part 70 is substantially inserted, shape
The front end face 65A of head 72 and cylindrical portion 65 into the big footpath in front end runs into and becomes the shape that can not be inserted on here
State, terminates the installation of internal part 70.In the state of installation terminates, internal part 70 is as shown in figure 17, except the head of front end
The almost overall of portion 72 is accommodated in cylindrical portion 65, becomes the front end of head 72 from front end face 65A somewhat prominent to front side shape
State.
In addition, be incorporated in the internal part 70 of cylindrical portion 65 using the effect of the taper seat 72A for being formed at head 72 with
And it is formed at the effect of the ridge 71 of periphery wall, and with the center of the center of through hole 73 and the axis hole 66 for being formed at cylindrical portion 65
Consistent mode is positioned.And, further, using the bonding agent C for being coated to outer peripheral face, keep the state being positioned and fix
In the hole wall of axis hole 66.
Next, in second step, entering to be about to the optical fiber cable 41 of 1 light projector and the optical fiber cable 43 of 9 light
The operation that front end accessory 60 is assembled.Specifically, each optical fiber cable 41,43 inserts front end accessory 60 from rear, passes through successively
Wear the incorporating section 63 of fitment body 61, cylindrical portion 65, be accommodated in cylindrical portion 65 front internal part 70, line front end is from cylinder
The front end face forward in shape portion 65 projects specific length（Size H shown in Figure 18）Ground insertion.
In addition, when optical fiber cable 41,43 are inserted, by assembling operation person with the internally positioned part 70 of the optical fiber cable 41 of light projector
Through hole 73 center, and the mode that the optical fiber cable 43 of the light of remaining 9 is accommodated between position restraining portions 75 adjusts
The position of whole optical fiber cable 43.In such manner, it is possible to the optical fiber cable 43 of light is arranged at equal intervals in the optical fiber cable 41 with light projector
Centered on concentric circular L on.
In addition, the insertion method of optical fiber cable 41,43 can adopt following methods：Initially the optical fiber cable 41 of light projector is inserted
To after the through hole 73 of internal part 70, the adjustment position in the way of being accommodated between position restraining portions 75, and will receive afterwards
The method that each optical fiber cable 43 of light is inserted into through hole 73；In advance 9 are configured at equal intervals in the outside of the optical fiber cable 41 of light projector
Bar optical fiber cable 43, the adjustment position in the way of optical fiber cable 43 is accommodated between position restraining portions 75, and light projector is used and light
The method that optical fiber cable 41,43 is inserted in the lump the through hole 73 of internal part 70.
In addition, internally the rear end of part 70 is formed with the tapered portion 76 of mortar type, in optical fiber cable 41,43 is inserted into
During portion's part 70, become the structure for guiding optical fiber cable 41,43 to the central side of through hole 73.
Next, in the 3rd step, as shown in figure 19, carrying out to dashing forward forwards from the front end face 65A of cylindrical portion 65
The leading section of the optical fiber cable 41,43 for going out applies the operation of hardening bonding agent U.The operation for applying hardening bonding agent U uses note
Emitter etc., is carried out in the way of surrounding the periphery of each optical fiber cable 41,43.
And, in the 4th step, as shown in figure 20, enter to be about to optical fiber cable 41,43 and move rear to, by the leading section of line
（Apply the part of hardening bonding agent U）The operation being withdrawn in the through hole 73 of internal part 70.If by optical fiber cable 41,43
Leading section retracts, then leading section and coated hardening bonding agent U are introduced into together the inside of through hole 73, it is possible to
The inside filling hardening bonding agent U of through hole 73.
Therefore, if the hardening bonding agent U hardening having been filled with, the optical fiber cable 43 of sensitive side is as shown in figure 8, with equal intervals
The state fixed position being arranged on the concentric circular L centered on optical fiber cable 41.In addition, being filled in the hard of the inside of through hole 73
Bonding agent U is when retracting for the property changed, between the gap between internal part 70 and each optical fiber cable 41,43, each optical fiber cable 41,43
Gap, it is possible to by each optical fiber cable 41,43 remain from other optical fiber cables 41,43, the detached state of internal part 70.
In addition, the amount of retracting of optical fiber cable 41,43 is preferably longer than the protrusion from front end face 65A somewhat few, so as to after retracting
The front end of optical fiber cable 41,43 becomes the state stretched out slightly towards front from the front end face 65A of cylindrical portion 65.So, it is final to remove
The part stretched out from front end face 65A in optical fiber cable 41,43 removes such that it is able to by the front position and cylinder of optical fiber cable 41,43
The front end face 65A pairings in shape portion 65.
Afterwards, in the 5th step, as shown in figure 21, carry out to optical fiber cable 41,43 assembling protection pipe 50, plug 80,
The operation of pattern pipe 90.And, in the 6th step, as shown in figure 22, enter to be about in optical fiber cable 41,43 to fitment body
The part that 61 rear is drawn and protection pipe downwardly together square bending and be accommodated in the operation of the incorporating section 63 of fitment body 61.It
Afterwards, the cover 67 that the back side is coated with bonding agent is installed to into fitment body 61.Thus, become behind fitment body 61 by covering
The state of the closing of part 67.
And, after the hardening bonding agent U hardening applied in the 3rd step, perform the 7th step.7th step
In rapid, carry out using grinder（grinder）Or sander（sander）Deng instrument grinding the fore-end of cylindrical portion 65
Operation.By grinding operation, the part stretched out from the front end face 65A of cylindrical portion 65 is removed（B portions shown in Figure 22, internal portion
The front end of part 70, the front end of optical fiber cable 41,43）, as shown in figure 3, the front end of internal part 70, the front end of optical fiber cable 41,43 add
Work is to even up with the front end face 65A of cylindrical portion 65.By the above, coaxial type optical fiber head 30 can be produced.
3. effect explanation
In coaxial type optical fiber head 30, the position of the limit fibre line 43 of position restraining portions 75 of internal part 70 is arranged on,
So being difficult the deviation for causing optical fiber cable 41,43（It is eccentric）.Therefore, it is possible to improve the arranged in co-axial alignment precision of optical fiber cable 41,43.And
And, each optical fiber cable 41,43 is fixed by adhesive layer 77 with the state of arranged in co-axial alignment, so when using, without optical fiber cable 41,43
Position relationship changes and the destroyed situation of arranged in co-axial alignment.In addition, position restraining portions 75 is in along the axial of internal part 70
Rectilinear form, so the optical fiber cable 43 for being inserted in internal part 70 copies position restraining portions 75 to become rectilinear form.Therefore, optical fiber
The inside of the internally part 70 of line 43 is not flexible, and arranged coaxial precision is improved.In addition, if in advance by the shape of position restraining portions 75
Become rectilinear form, then when inserting to through hole 73, position restraining portions 75 also serves as drawing optical fiber cable 43 to axial front side
The guiding piece function led, so having the advantages that easily optical fiber cable 43 to be inserted into into internal part 70.
Furthermore, it is contemplated that optical fiber cable 41,43 is for example being inserted internal part 70 by the filling operation of hardening bonding agent U
Carry out before through hole 73.If however, first apply hardening bonding agent U, to through hole 73 insert optical fiber cable 41,43 when
Cat-in resisting force all becomes big anyway, and assembling operation is poor.At that point, coaxial type optical fiber head 30 disclosed in present embodiment
In manufacture method, first internal part 70 afterwards, will apply hardening bonding agent U through insertion optical fiber cable 41,43 in leading section
Optical fiber cable 41,43 be withdrawn into the inner side of internal part 70, so as to hardening bonding agent U to be filled into the insertion of internal part 70
In hole 73.If so, because Cat-in resisting force when optical fiber cable 41,43 is inserted into into internal part 70 diminishes, so assembleability is good
Good, manufacture efficiency is high.
In addition, in the present embodiment, to become the side of the state that front end extends slightly out from the front end face 65A of cylindrical portion 65
Formula retracts optical fiber cable 41,43, then the front end stretched out finally is removed, so as to the front end of optical fiber cable 41,43 be processed as and tubular
The front end face 65A in portion 65 is evened up.In such manner, it is possible to reduce the deviation of line front end position, as a result, can keep right from detection is become
Distance of the object of elephant to line front end, it is possible to increase the accuracy of detection of Fibre Optical Sensor 10.
＜ others embodiment ＞
The invention is not restricted to the embodiment illustrated according to above-mentioned description and accompanying drawing, such as implementation below is also wrapped
It is contained in the technical scope of the present invention.
（1）In the present embodiment, as the configuration example of coaxial type optical fiber cable 40, show with the optical fiber cable of light projector
The example of the optical fiber cable 43 of light is arranged at equal intervals on concentric circular L centered on 41.The configuration of optical fiber cable 41,43 is not limited to
Configuration disclosed in embodiment, for example, it is also possible to make arrangement of the light projector with light in turn, by the optical fiber cable of light
43 are configured in central side, and the optical fiber cable 41 of light projector is arranged at equal intervals on the concentric circular centered on optical fiber cable 43.
（2）In the present embodiment, the example of the first half that position restraining portions 75 is formed at internal part 70 is shown
Son, however can also the length range of internally part formed.In addition, in embodiment, the section for making position restraining portions 75 is
Toroidal, as long as but be prevented from the shape of the positional deviation of optical fiber cable 43, for example, it is also possible to be the trapezoidal shape of section
Shape etc..
Claims (5)
1. coaxial type optical fiber head, it is characterised in that possess：
Front end accessory, the cylindrical portion for possessing the axis hole with front openings；
The internal part of cartridge type, is installed on the above-mentioned axis hole of above-mentioned cylindrical portion；
Coaxial type optical fiber cable, installed relative to above-mentioned front end accessory in the state of above-mentioned internal part in interior inserting in, and with
In the optical fiber cable of light projector use or light centered on the optical fiber cable of any one party, the light of a plurality of the opposing party is arranged on concentric circular
Fine line；And
Adhesive layer, is formed in above-mentioned internal part, and the interior above-mentioned coaxial type optical fiber cable for inserting in above-mentioned internal part is fixed
To be unable to the state of displacement,
In the circumferential line position entered with the optical fiber cable being formed with equal intervals to above-mentioned the opposing party on the internal perisporium of above-mentioned internal part
The position restraining portions of restriction is put, and above-mentioned position restraining portions is the axial rectilinear form along above-mentioned internal part,
Ridge is provided with the outer peripheral face of above-mentioned internal part, the ridge is by the hole wall with the axis hole for being formed at above-mentioned cylindrical portion
Abut, so as to the center of the above-mentioned internal part mode consistent with the center of above-mentioned cylindrical portion by above-mentioned internal part relative to
Above-mentioned cylindrical portion is positioned,
The placement of adhesives between the above-mentioned hole wall of above-mentioned internal part and the above-mentioned axis hole of above-mentioned cylindrical portion.
2. coaxial type optical fiber head according to claim 1, it is characterised in that
Above-mentioned position restraining portions is in section circle shape.
3. coaxial type optical fiber head according to claim 1, it is characterised in that
Be provided with head in the front end of above-mentioned internal part, the head has locating surface, the locating surface by be formed at above-mentioned cylinder
The peritreme of the above-mentioned axis hole in shape portion is abutted, so as in the center of the above-mentioned internal part mode consistent with the center of above-mentioned cylindrical portion
Above-mentioned internal part is positioned relative to above-mentioned cylindrical portion.
4. a kind of Fibre Optical Sensor, it is characterised in that have：
Sensor main body portion；And
The coaxial type optical fiber head being installed on any one of the claims 1 to 3 on the sensor main part, the coaxial type
Optical fiber head is installed on the sensor main part by means of the connector portion of the end for being fixed on coaxial type optical fiber cable.
5. a kind of manufacture method of coaxial type optical fiber head, the coaxial type optical fiber head by used with light projector or light optical fiber cable
In any one party optical fiber cable centered on and the coaxial type optical fiber of the optical fiber cable of a plurality of the opposing party is arranged on concentric circular
Front end accessory is installed in the leading section of line, and the manufacture method of above-mentioned coaxial type optical fiber head is characterised by possessing following steps：
By in the circumferential forming the function and axially of the position for playing the optical fiber cable for limiting above-mentioned the opposing party at equal intervals
The internal part of the cartridge type of the position restraining portions of linearly extended shape is installed to the cylindrical portion that is formed at above-mentioned front end accessory
The step of axis hole；
The para-position in the way of the optical fiber cable of above-mentioned the opposing party is accommodated between above-mentioned position restraining portions, and with leading section through upper
The step of optical fiber cable of light projector use and light is assembled in above-mentioned front end accessory by the mode for stating the cylindrical portion of internal part；
To through above-mentioned cylindrical portion light projector use and light above-mentioned optical fiber cable leading section adhesive-applying the step of；
By the step of the above-mentioned optical fiber cable of leading section adhesive-applying retracts above-mentioned internal part side；And
Remove the part that projects from the front end face of above-mentioned cylindrical portion after retracting and by the front end of above-mentioned optical fiber cable and above-mentioned tubular
The step of front end face in portion is evened up,
Ridge is provided with the outer peripheral face of above-mentioned internal part, the ridge is by the hole wall with the axis hole for being formed at above-mentioned cylindrical portion
Abut, so as to the center of the above-mentioned internal part mode consistent with the center of above-mentioned cylindrical portion by above-mentioned internal part relative to
Above-mentioned cylindrical portion is positioned,
The placement of adhesives between the above-mentioned hole wall of above-mentioned internal part and the above-mentioned axis hole of above-mentioned cylindrical portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-006286 | 2013-01-17 | ||
| JP2013006286A JP6140456B2 (en) | 2013-01-17 | 2013-01-17 | Coaxial optical fiber head, optical fiber sensor, and coaxial optical fiber head manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103941355A CN103941355A (en) | 2014-07-23 |
| CN103941355B true CN103941355B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320735017.2U Expired - Fee Related CN203849463U (en) | 2013-01-17 | 2013-11-19 | Coaxial type optical fiber head and fiber sensor |
| CN201310584958.5A Expired - Fee Related CN103941355B (en) | 2013-01-17 | 2013-11-19 | Coaxial optical fiber head, optical fiber sensor, and method for manufacturing coaxial optical fiber head |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320735017.2U Expired - Fee Related CN203849463U (en) | 2013-01-17 | 2013-11-19 | Coaxial type optical fiber head and fiber sensor |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6140456B2 (en) |
| CN (2) | CN203849463U (en) |
| TW (1) | TWI626484B (en) |
| WO (1) | WO2014112172A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6140456B2 (en) * | 2013-01-17 | 2017-05-31 | パナソニック デバイスＳｕｎｘ株式会社 | Coaxial optical fiber head, optical fiber sensor, and coaxial optical fiber head manufacturing method |
| JP2017102193A (en) * | 2015-11-30 | 2017-06-08 | パナソニック デバイスＳｕｎｘ株式会社 | Coaxial fiber head, fiber sensor, and method of manufacturing coaxial fiber head |
| DE102016202093A1 (en) * | 2016-02-11 | 2017-08-17 | Olympus Winter & Ibe Gmbh | Videoscope |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203849463U (en) * | 2013-01-17 | 2014-09-24 | 松下神视株式会社 | Coaxial type optical fiber head and fiber sensor |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS554043A (en) * | 1978-06-26 | 1980-01-12 | Nippon Telegr & Teleph Corp <Ntt> | Optical connector |
| JPS6227305U (en) * | 1985-08-02 | 1987-02-19 | ||
| JP2585129Y2 (en) * | 1991-10-11 | 1998-11-11 | 旭化成工業株式会社 | Fiber unit |
| JP3425985B2 (en) * | 1993-01-12 | 2003-07-14 | 三菱レイヨン株式会社 | Optical fiber sensor head |
| JP3517443B2 (en) * | 1994-02-23 | 2004-04-12 | 三菱レイヨン株式会社 | Optical fiber sensor head |
| JP3273123B2 (en) * | 1996-08-22 | 2002-04-08 | 京セラ株式会社 | Multi-core ferrule |
| JPH11352358A (en) * | 1998-06-10 | 1999-12-24 | Sumitomo Electric Ind Ltd | Production of optical connector and optical connector ferrule |
| JP2007279194A (en) * | 2006-04-04 | 2007-10-25 | Wired Japan:Kk | Fiber optic cable, optical transmission method, and spectroanalysis system |
| CN202523824U (en) * | 2012-04-24 | 2012-11-07 | 延安双丰集团有限公司 | Underground high-power ultrasonic-dedicated coaxial cable |
-
2013
- 2013-01-17 JP JP2013006286A patent/JP6140456B2/en active Active
- 2013-10-24 WO PCT/JP2013/078788 patent/WO2014112172A1/en active Application Filing
- 2013-11-19 CN CN201320735017.2U patent/CN203849463U/en not_active Expired - Fee Related
- 2013-11-19 CN CN201310584958.5A patent/CN103941355B/en not_active Expired - Fee Related
- 2013-12-02 TW TW102144044A patent/TWI626484B/en active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203849463U (en) * | 2013-01-17 | 2014-09-24 | 松下神视株式会社 | Coaxial type optical fiber head and fiber sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6140456B2 (en) | 2017-05-31 |
| JP2014137294A (en) | 2014-07-28 |
| CN103941355A (en) | 2014-07-23 |
| TWI626484B (en) | 2018-06-11 |
| WO2014112172A1 (en) | 2014-07-24 |
| CN203849463U (en) | 2014-09-24 |
| TW201430419A (en) | 2014-08-01 |
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