WO2005102544A1 - パージ機構 - Google Patents
パージ機構 Download PDFInfo
- Publication number
- WO2005102544A1 WO2005102544A1 PCT/JP2004/004932 JP2004004932W WO2005102544A1 WO 2005102544 A1 WO2005102544 A1 WO 2005102544A1 JP 2004004932 W JP2004004932 W JP 2004004932W WO 2005102544 A1 WO2005102544 A1 WO 2005102544A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- receiving
- gas
- hole
- self
- transmitting means
- Prior art date
Links
Classifications
-
- 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
- G01N21/9501—Semiconductor wafers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
- B08B17/02—Preventing deposition of fouling or of dust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
- G01N2021/151—Gas blown
Definitions
- the present invention relates to par, »structures.
- the light measurement ⁇ of a light detection sensor or camera if dust or the like adheres to the light receiving surface or lens, the area of the narrowed area becomes narrow, and dust or the like may be photographed.
- Problems such as a decrease in the sensitivity S of the sensor and a decrease in the image quality of the resulting image occur.
- 3 ⁇ 4 ⁇ 3 ⁇ 4 ⁇ easily adheres to a light detection sensor or the like.
- Equipment to keep it clean is provided. '
- the present invention relates to a structure used for keeping a light-receiving surface, a lens, and the like of light measurement ⁇ such as a light detection sensor and a camera clean.
- Patent Documents 1 and 2 Subsequent 1 and 2.
- an air purge hood 105 attached to the front of a transparent plate 104 of a camera case 101 accommodating a camera 102 is described, and an air discharge hood 105 of the air purge hood 105 is provided.
- air discharge hood 105 of the air purge hood 105 is provided.
- the light transmitting plate 4 is suppressed by the air filter material 17 having air permeability, and the air is constantly transmitted through the air filter material 17.
- the air filter material 17 having air permeability
- dust and the like are prevented from adhering to the surface of the light transmitting plate 4.
- the air discharge port 108 of the air purge hood 105 and the transparent plate There is a step (part of FIG. 5A) between the surface and the surface of the 104, and a flaw is formed in the step.
- the friction between the vortex and the transparent plate 104 generates static electricity.
- dust or the like adhering to the vicinity of the step may be attracted to the surface of the transparent plate 104 by the static electricity and adhere to the surface of the transparent plate 104.
- dust gradually accumulates in the vicinity of the step, that is, in the peripheral portion of the transparent plate 104, so that a problem that the field of view of the camera 102 is narrowed occurs.
- the air purge hood 105 When the air purge hood 105 is provided in the light detection sensor, the light receiving area of the light detection sensor is reduced, so that the sensitivity of the light detection sensor is reduced. Further, in the technology of the second embodiment, since there is no step between the air filter material 17 and the surface of the light transmitting plate 4, the generation of vortices can be prevented. Therefore, the flow velocity of the air on the surface of the light transmitting plate 4 is very low. Then, the dust and the like attached to the surface of the light transmitting plate 4 cannot be blown off. I have to put it. In this case, energy is consumed to make compressed air, so running the air constantly increases running costs.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2000-01-1 08880
- Patent Document 2 Japanese Patent Application Laid-Open No. 2003-23032 Disclosure of the Invention
- the present invention can improve the effect of removing the guards and the like attached to the sensor and the like without increasing the size of the sensor, and can reduce the running force and the running cost.
- the purpose is to do.
- a purge mechanism is a purge mechanism that removes a substance adhering to a surface of an object by using a gas, wherein the par, the structure is an object accommodation space in which the object is disposed, and the object accommodation.
- An object container provided with a through-hole communicating between the space and the outside; A part for holding the t & f own object so as to form a gap along the inner edge of the through hole between the surface of the object and the inner edge of the through hole; It is assumed that a gas supply for supplying gas is provided in a gap between the surface of the object and the inner edge of the through hole of the object container.
- the holding portion includes a plurality of protrusion-shaped holding members provided along an inner edge of the through hole;
- the glue is made of a fixed material sandwiched and fixed between them. .
- a purge mechanism is the purge mechanism according to the first or second aspect, further comprising: transmitting means for emitting a signal; and receiving means for receiving the signal emitted from the transmitting means. It is assumed that each of the object storage units provided in the sensor and housing the transmitting unit and the tilt receiving unit is provided as a glue pad. .
- a purge mechanism according to a fourth invention is the purge mechanism according to the third invention, wherein the frame of the sensor is provided between an inner edge of a through-hole of the object container and a surface of the transmitter in the object container that accommodates the transmitter.
- a purge mechanism according to a fifth invention is the purge mechanism according to the fourth invention, wherein in the frame of the sensor, a surface of the transmitting means in an object storing the transmitting means and an inner edge of a through hole of the object storing section.
- a transmitting passage communicating between a gap between the receiving means and the gas passage of the knitting frame; a surface of the receiving means in an object receiving part for receiving the fill receiving means; and an inner end of a through hole of the object receiving part.
- a receiving-side passage communicating with a gap between the rim and the gas passage of the lift frame; and a control circuit of the transmitting unit, which is disposed in the transmitting-side passage.
- a control circuit of the receiving means is disposed in a self-receiving side passage, and each control means includes a waterproof layer formed of a waterproof material on a surface thereof.
- the surface of the object Gas can be supplied to the object, so that dust that adheres to the surface of the object and scatters is removed by the gas can do.
- the gas outlet is formed along the inner edge of the through hole, the gas can flow over the entire surface of the object, and dust can be removed from the entire surface of the object.
- the gas outlet is formed by the surface of the object and the inner edge of the through hole, there is no need to provide a special member for supplying gas to the surface of the object.
- the structure can be made compact.
- the gas supplied from the gas discharge port can flow along the surface of the object from the outer peripheral portion of the object, since there is no step between the gas discharge port and the surface of the object. Therefore, vortex does not occur on the surface of the object due to the gas supplied from the gas outlet # / !, so that dust and the like can be prevented from being deposited on the surface of the object.
- the flow of gas generated on the surface of the object can be adjusted.
- the third aspect of the invention it is possible to prevent dust and the like from accumulating on the surfaces of the transmitting means and the receiving means of the sensor, thereby preventing the sensitivity of the sensor from being lowered.
- the gas supply ports on both the transmitting means side and the receiving means side are communicated by the gas passage, the gas is supplied to both gas supply ports by providing only one gas supply section. can do. Since the gas passage is provided in the frame of the sensor, the piping for supplying the gas to the sensor can have a simple structure.
- the control circuits of the transmitting means and the receiving means are arranged in the transmitting side passage and the receiving side passage, a special circuit for arranging the control circuit in the frame of the sensor is provided.
- the structure of the sensor can be made simpler and more compact than when a space is provided. Moreover, since the control circuit is provided with a waterproof layer (film) on its surface, even if the gas supplied from the gas transport section contains moisture S, the water does not adversely affect the control circuit. be able to.
- FIG. 1 is a schematic explanatory diagram of a position detection sensor 10 provided with a purge mechanism of the present embodiment.
- FIG. 2 is an enlarged view of a main part of the position detection sensor 10.
- FIG. 3 shows a web provided with a position detection sensor 10 having a purge mechanism according to the present embodiment.
- FIG. 2 is a schematic plan view of the guide device 1.
- FIG. 4 is a schematic plan view of the web guide device 1 provided with the position detection sensor 10 having the structure of the present embodiment.
- FIG. 5 is a schematic explanatory view of a conventional air purge device.
- FIG. 6 is a schematic explanatory view of a conventional air purge device. BEST MODE FOR CARRYING OUT THE INVENTION
- the purge mechanism of the present invention is provided in an optical device such as a camera, various sensors, and the like, and is a purge mechanism that removes dust or the like adhering to the surface of a lens or ⁇ that performs reception and transmission using a gas.
- FIG. 3 is a schematic plan view of the web guide device 1 provided with the position detection sensor 10 including the purge mechanism of the present embodiment.
- FIG. 4 is a schematic side view of the web guide device 1 provided with the position detection sensor 10 including the purge mechanism of the present embodiment.
- reference numeral 1 denotes a web guide device provided on a web production line or the like
- reference numeral 2 denotes a base of the web guide device 1.
- a pair of rollers 5, a pair of rollers 5, and a driving frame 4 to which a force is attached are mounted via a swing shaft 3.
- a swing means 20 for swinging the swing frame 4 with the swing shaft 3 as a fulcrum is provided.
- a symbol W indicates a web wound around the pair of rollers 5, 5.
- the pair of rollers 5 is arranged such that its center in the width direction is located at a position that is equal to the center of the pair of rollers 5, 5 in the axial direction (hereinafter, referred to as a web base BL). , 5
- the width of this web At both ends, the position detection sensors 10 of the present embodiment are provided respectively so as not to be entangled with the web W.
- This position detection sensor 10 is attached to the base 2 by a sensor holding mechanism 6.
- the position detection sensor 10 detects the movement of the web W, and the swinging means 2 is moved by the control device (not shown). 0 is activated. Then, since the swing frame 4 swings and a force is generated between the web W and the pair of rollers 5 along the width direction of the web ⁇ W, the web W is moved in the width direction. The web can be returned to its original position, that is, the web footrest BL.
- FIG. 1 is a schematic explanatory view of a position detection sensor 10 provided with a purge mechanism of the present embodiment.
- the position detection sensor 10 of the present embodiment includes a substantially U-shaped frame 11, and the web W is located between the front ends lla and lib of the frame 11.
- the distal end 11a, lib of the frame 11 has a web passage, in other words, a web member passing through the web passage ⁇ W, and has a transmission means 12 and a reception means 15 respectively.
- Force S is provided.
- the transmitting means 12 includes, for example, a light emitting means 13 which is a light emitting body capable of emitting light such as a light emitting diode or an infrared ray, and directs the light emitted from the light emitting means 13 toward the wafer ⁇ W.
- the receiving means 15 listens to the light emitted from the light emitting means 13 while adjusting means 14 such as a lens and an optical plate for emitting light. It comprises a light receiving member 16 and a light detector 17 such as a light detector for detecting the amount of light transmitted through the light receiving member 16.
- the position detection sensor 10 is arranged so that a part of the light received by the receiving means 15 is blocked by the web, when the web W moves in the width direction, the receiving means 1 5 can change the amount of light received. Then, the position detection sensor 10 can detect which direction in the width direction of the web W has moved by increasing or decreasing the amount of received light. It is possible to detect how long the web is moved.
- reference numeral 35b denotes an empty object housing space (hereinafter, referred to as a transmitting means housing space) provided inside the front end portion 11a of the frame 11 described above. Inside the transmitting means accommodating space 35b, there is arranged a control circuit 12p for controlling the function of the light emitting means 13 having a disgusting light emitting means 13 attached at one end.
- a control circuit 12p for controlling the function of the light emitting means 13 having a disgusting light emitting means 13 attached at one end.
- a portion facing the tip llb of the self-frame 11 is provided with a transmission means holding portion provided with a through hole 31g communicating between the transmission means housing space 35b and the outside. 3 1 is provided.
- the disgusting adjusting means 14 and the adjusting means 14 are fixed while being pressed against the inner surface of the transmitting means holding part 31.
- a cylindrical fixing member PB is provided.
- the fixing member PB is disposed so as to house the light emitting means 13 therein, and the adjusting means 14 and the fixing material ⁇ are provided between the outer surface thereof and the inner surface of the transmitting means housing space 35b. It is arranged so that there is a space (hereinafter referred to as communication space 35h).
- a plurality of projecting holding members 32 are provided on the inner surface of the transmitting means holding portion 31, that is, on the surface on the transmitting means storage space 35b side.
- the plurality of members 32 are arranged at intervals along the inside of the knitting through-hole 31g.
- a plurality of passages (hereinafter referred to as air outlets 33 and ⁇ ⁇ ) are formed along the inner component of the through-hole 31g, in other words, along the outer periphery of the adjusting means 14.
- air outlets 33 are formed as passages communicating between the transmitting means and the transmitting means receiving space 35b.
- the transmitting means holding portion 31, the holding member 32, and the fixing member PB force are formed. It is a holding part in the range of.
- the transmitting means accommodating space 35b is provided in a frame provided in the frame 11. It is communicated via a body supply member S to a general engine such as a compressor (not shown).
- the air outlet 3 3 is formed by the surface of the adjusting means 14 and the inner surface of the transmitting means holding portion 31, that is, the surface of the adjusting means 14 and the inside of the through hole 31 g. Since no special member or the like is provided for supplying gas to the surface of 4, the position detection sensor 10 can have a compact structure.
- the transmitting means accommodating space 35b is a claim object receiving space in the scope of the claims, and the leading end 11a of the frame 11 is a claim container area in the claims.
- gas discharge port 33 is formed along the outer periphery of the adjusting means 14, gas can flow over the entire surface of the adjusting means 14, and dust is removed from the entire surface of the adjusting means 14. can do. Then, by adjusting the shape and the disposition position of the holding member 32, the flow of the gas generated on the surface of the adjusting means 14 can be adjusted. If it is, it is formed on the axis ⁇ ⁇ ⁇ ⁇ ⁇ with respect to the central axis of the through-hole 31g of the adjusting section 14 4. ⁇ If a plurality of holding members 32 are formed so that the outlet 33 is axially aligned with the center axis of the through hole 31g, the flow rate of the gas discharged from all the gas discharge ports 33 can be reduced.
- the gas (*) outlet 33 is merely a space that communicates between the outside and the communication space 35h, the air flow rate of the gas blown out from the air # 3 outlet 33 is adjusted by the surface of the adjusting means 14.
- the flow velocity can blow off dust and the like. Therefore, there is no need to constantly blow out gas, so that running costs can be reduced.
- the gas may be intermittently blown according to the fiber used.
- control circuit 12p is provided in the transmitting means housing space 35b. For this reason, the structure of the position detection sensor 10 is simpler than when a space for arranging the control circuit 12p in the position detection sensor 10 separately from the passage for supplying gas to the gas discharge port 33 is provided. It can be made compact.
- control circuit 12p has a surface (not shown) formed of a waterproof material on its surface.
- the above-mentioned transmitting means accommodating space 35b is a transmitting side passage referred to in the claims.
- the fixing member PB is mounted so that the distance between one end of the fixing member PB and the adjusting means 14 and the other end of the fixing member PB and the control circuit 12p are substantially equal to each other, gas such as air from general materials can be obtained. When gas is supplied, it is possible to prevent gas from entering the fixing member ⁇ ⁇ , so that there is no adverse effect of any dust or the like.
- the method for keeping the distance between one end of the fixing member ⁇ ⁇ and the adjusting means 14 and the distance between the other end of the solid ⁇ f ⁇ tPB and the control circuit 12p is not particularly limited. A material may be sandwiched between the members.
- the method of fixing the adjusting means 14 is not limited to the above-described method, and a gap is formed between the inner surface of the transmitting means holding portion 31 and the surface of the adjusting means 14, and the force of the adjusting means 14 is also reduced.
- the force S transmission means holding part 31 should just be able to move so as not to move with respect to the inner surface.
- a hollow object accommodating space (hereinafter referred to as a receiving means accommodating space 35c) is formed inside the
- the receiving means accommodating space 35c is communicated via a gas passage 35a formed in the frame 11, and controls the light detector 17 having a photodetector 17 attached at one end.
- a control circuit 17 ⁇ is arranged.
- the transmitting means holding section 36 has substantially the same configuration as the transmitting means holding section 31 and includes a plurality of holding members 37 on its inner surface, and holds the light receiving member 16 in a plurality of positions. It is held with the material 37 and the cylindrical fixing member PB sandwiched between them.
- the fixing member PB is disposed so as to house the photodetector 17 therein, and the light receiving member 16 and the fixing member PB are disposed between the outer surface and the inner surface of the receiving means housing space 35c.
- a passage communicating between the outside and the communication space 35h is provided between the inner surface of the receiving means holding portion 36 and the surface of the light receiving member 16; As a passage, a plurality of air outlets are formed.
- the distal end 11a of the frame 11 and the communication means accommodating space 35c are the object accommodating section and the object accommodating space according to the claims, and the transmitting means holding section 36, the holding member 37 and Solid [5 materials PB, in the claims! /, Urinbe. Further, since the control circuit 17p is provided in the receiving means accommodating space 35c, the structure of the position detection sensor 10 can be made simple and compact.
- the receiving means accommodating space 35c is a receiving-side passage as described in the claims.
- the receiving means accommodating space 35c is communicated with the transmitting means accommodating space 35b via the gas passage 35a formed in the frame 11, so that only one gas is provided and both gas supply ports are provided. Gas can be supplied to 33, 38. Moreover, since the gas passage 35a is provided in the frame 11 of the position detection sensor 10, the piping for supplying gas to the position detection sensor 10 can be made simple. INDUSTRIAL APPLICABILITY The purge mechanism of the present invention is applicable not only to a position detection sensor that detects the widthwise end of the web, but also to an optical sensor used in places with a lot of dust.
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/004932 WO2005102544A1 (ja) | 2004-04-05 | 2004-04-05 | パージ機構 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/004932 WO2005102544A1 (ja) | 2004-04-05 | 2004-04-05 | パージ機構 |
Publications (1)
Publication Number | Publication Date |
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WO2005102544A1 true WO2005102544A1 (ja) | 2005-11-03 |
Family
ID=35196787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/004932 WO2005102544A1 (ja) | 2004-04-05 | 2004-04-05 | パージ機構 |
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WO (1) | WO2005102544A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015137994A1 (en) * | 2014-03-10 | 2015-09-17 | Cognex Corporation | Air flow mechanism for image capture and vision systems |
WO2016018832A1 (en) * | 2014-07-29 | 2016-02-04 | Nanometrics Incorporated | Protected lens cover plate for an optical metrology device |
GB2516545B (en) * | 2013-05-23 | 2017-02-08 | Q-Bot Ltd | Method of covering surface of a building and robot therefor |
US20210215930A1 (en) * | 2018-05-23 | 2021-07-15 | Andrew Subratie | Optical component protector |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5881762U (ja) * | 1981-11-28 | 1983-06-02 | 日本電気ホームエレクトロニクス株式会社 | ビデオデイスクプレ−ヤのロ−デイング装置 |
JP2003322669A (ja) * | 2002-05-01 | 2003-11-14 | Kasuga Electric Works Ltd | プローブ支持装置 |
-
2004
- 2004-04-05 WO PCT/JP2004/004932 patent/WO2005102544A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5881762U (ja) * | 1981-11-28 | 1983-06-02 | 日本電気ホームエレクトロニクス株式会社 | ビデオデイスクプレ−ヤのロ−デイング装置 |
JP2003322669A (ja) * | 2002-05-01 | 2003-11-14 | Kasuga Electric Works Ltd | プローブ支持装置 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2516545B (en) * | 2013-05-23 | 2017-02-08 | Q-Bot Ltd | Method of covering surface of a building and robot therefor |
US10478972B2 (en) | 2013-05-23 | 2019-11-19 | Q-Bot Limited | Method of covering a surface of a building and robot therefor |
US11077457B2 (en) | 2013-05-23 | 2021-08-03 | Q-Bot Limited | Method of covering a surface of a building and robot therefor |
WO2015137994A1 (en) * | 2014-03-10 | 2015-09-17 | Cognex Corporation | Air flow mechanism for image capture and vision systems |
US9908158B2 (en) | 2014-03-10 | 2018-03-06 | Ametek, Inc. | Air flow mechanism for image capture and vision systems |
WO2016018832A1 (en) * | 2014-07-29 | 2016-02-04 | Nanometrics Incorporated | Protected lens cover plate for an optical metrology device |
US9958673B2 (en) | 2014-07-29 | 2018-05-01 | Nanometrics Incorporated | Protected lens cover plate for an optical metrology device |
US20210215930A1 (en) * | 2018-05-23 | 2021-07-15 | Andrew Subratie | Optical component protector |
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