CN101408557B - Circuit board visual inspection table - Google Patents
Circuit board visual inspection table Download PDFInfo
- Publication number
- CN101408557B CN101408557B CN2007102020071A CN200710202007A CN101408557B CN 101408557 B CN101408557 B CN 101408557B CN 2007102020071 A CN2007102020071 A CN 2007102020071A CN 200710202007 A CN200710202007 A CN 200710202007A CN 101408557 B CN101408557 B CN 101408557B
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- cylindrical shell
- circuit board
- worktable
- light
- light table
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- 238000011179 visual inspection Methods 0.000 title description 10
- 230000011514 reflex Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000003287 optical effect Effects 0.000 description 9
- 230000000007 visual effect Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 208000003464 asthenopia Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 101001045744 Sus scrofa Hepatocyte nuclear factor 1-beta Proteins 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to a light table used for the detection of a circuit board. The light table comprises a worktable, an outer housing arranged on the worktable and at least a light source, and the invention is characterized in that the light table further comprises a beam condensing unit; the condensing unit comprises a first cylindrical shell, a rotation part, a sliding axle and a lens system, wherein, the first cylindrical shell is arranged on the worktable, the rotation part comprises a rotating shaft and a second cylindrical shell; one end of the rotating shaft penetrates in the first cylindrical shell, the other end thereof is connected with the second cylindrical shell, one end of the sliding shaft penetrates in the second cylindrical in a sliding way and the other end thereof is connected with the lens system. The light table of the invention increases the surface lightness of the circuit board arranged on the light table but does not increase the electrical power consumption of the light source, thus causing the eyes of people to be more comfortable.
Description
Technical field
The present invention relates to a kind of circuit board detection device, relate in particular to a kind of light table that circuit board visual inspection is used that is used for.
Background technology
Softness according to the base material of printed circuit board (PCB) can be divided into printed circuit board (PCB) hard circuit board and flexible PCB two big classes substantially.Flexible PCB (Flexible Printed Circuit Board, the electronic product that has relative motion when FPCB) being widely used in various work between the parts with its excellent warp resistance performance for example in clamshell phone, printhead, the hard disk read heads so that the electrical power/signal transmission to be provided.
Circuit board generally need be through optic test repeatedly in manufacturing process, the property advanced testing electrical property again after completing, for example short-circuit test and open test, see also Yiu-Wing Leung, A Signal Path Grouping Algorithm forFast Detection of Short Circuits on Printed Circuit Boards, IEEE Transactions onInstrumentation and Measurement, Vol 43.No.1, p288-292, February 1994. optical detection modes commonly used comprise that the machine automated optical detects (Automatic Optical Inspection, AOI) and Manual Visual Inspection, the AOI mode has very high efficient, yet, AOI relies on bad decision algorithm because detecting, because the limitation of algorithm makes AOI can not be applicable to every kind of structure or bad detection, so Manual Visual Inspection remains necessary many times.
Manual Visual Inspection generally carries out on the light table, and so-called light table is meant the visual inspection worktable that light source is installed.Because the size of circuit board is more and more littler, structures such as the circuit of circuit board, through hole are also more and more meticulousr, therefore, and the also more and more difficult fine structure of seeing clearly on the circuit board of human eye.Therefore be necessary to increase the brightness of circuit board surface to increase visual performance.At present the mode that adopts is for increasing the output power of light source, yet the increase of light-source brightness makes whole worktable surface be in very bright state, and human eye is more prone to tired when long-time visual circuit board.And the increase of light-source brightness has also increased the consumption of electric energy.
In view of this, be necessary to provide a kind of circuit board surface brightness that is arranged on the light table that increases, but do not increase the power consumption of light source simultaneously, make the more comfortable optical desk for circuit board visual measurement of human eye.
Summary of the invention
Below with embodiment a kind of circuit board surface brightness that is arranged on the light table that increases is described, but do not increase simultaneously the power consumption of light source, make the more comfortable optical desk for circuit board visual measurement of human eye.
A kind of light table that is used for circuit board detecting, it comprises worktable, is installed on the outer cover of this worktable, and at least one light source, further comprise a beam condensing unit, this beam condensing unit comprises first cylindrical shell, rotating part, sliding axle and a lens combination, this first cylindrical shell is arranged at this worktable, this rotating part comprises the rotating shaft and second cylindrical shell, described rotating shaft one end is located in first cylindrical shell, the other end is connected in this second cylindrical shell, this sliding axle one end slidably is located in described second cylindrical shell, and the other end links to each other with lens combination.
In the described light table, rotating part can be around this first cylindrical shell rotation, and sliding axle can slide along this rotating part, thereby the light that lens combination can be sent light source converges on the optional position, worktable surface, when the worktable surface is provided with circuit board, the light luminance of circuit board surface increases, and makes circuit board visual inspection is more prone to carry out.And in the described light table, do not need to increase the output power of light source, and therefore can reduce the consumption of energy, and the light source intrinsic brightness do not increase the light that makes on the overall optical table and is unlikely to bright especially, can slow down visual inspection personnel's visual fatigue.
Description of drawings
Fig. 1 is the light table structure synoptic diagram of first embodiment.
Fig. 2 is the light table beam condensing unit STRUCTURE DECOMPOSITION synoptic diagram of first embodiment.
Fig. 3 is the light table beam condensing unit structural representation of second embodiment.
Embodiment
Consult Fig. 1, the optical desk for circuit board visual measurement 100 of first embodiment comprises worktable 10, outer cover 12, light source 14 and beam condensing unit 16.
Worktable 10 is installed on the bracing frame 102, and bracing frame 102 is supported in the certain altitude place with worktable 10.Outer cover 12 is installed on the worktable 10, is formed with reflectance coating or catoptron is set on the inwall 122 of outer cover 12, makes the light of light source 14 directive outer covers 12 be reflected back toward worktable 10 surfaces.
Consult Fig. 2, beam condensing unit 16 comprises first cylindrical shell 161, rotating part 162, sliding axle 164 and lens combination 166.In the middle of the present embodiment, first cylindrical shell 161 is cylindric, has columniform through hole 1611 in it.Certain first cylindrical shell 161 also can be other shapes, and for example the cross section is polygonal tubular.Through hole 1611 can be polygon equally along the cross section perpendicular to through hole 1611 direction radially.
Rotating part 162 comprises second cylindrical shell 1621 and rotating shaft 1622.Rotating shaft 1622 is basically perpendicular to axially being provided with of second cylindrical shell 1621.The diameter of rotating shaft 1622 is littler than the aperture of through hole 1611, so rotating shaft 1622 can insert through hole 1611, and rotating part 162 can be rotated around first cylindrical shell 161.Second cylindrical shell 1621 has and prolongs its axially extended through hole 1623.The cross section of through hole 1623 can be polygon, and is perhaps circular, and through hole 1623 cross sections are circular in the middle of the present embodiment, that is to say that through hole 1623 is cylindrical hole.
First cylindrical shell 161 can with the basic vertical settings in worktable 10 surface, certain first cylindrical shell 161 also can with the surperficial angled setting of worktable.First cylindrical shell 161 can directly be fixed on the worktable 10, also can rotating shaft be set on worktable 10 surfaces, and first cylindrical shell 161 is inserted this rotating shaft.Certain first cylindrical shell 161 also can be arranged on the below of worktable 10.
Sliding axle 164 is shaft-like, and its diameter is littler than the aperture of through hole 1623, thereby sliding axle 164 can insert in the through hole 1623 and can be along revolving endwisely slipping of second cylindrical shell 1621.When sliding axle 164 slides into the desired position, can utilize a fixed mechanism that sliding axle 164 is fixed on second cylindrical shell 1621, for example adopt a screw rod to screw in, against living sliding axle 164 from second cylindrical shell 1621.Lens combination 166 can directly be connected an end of sliding axle 164, but also can be by other fixed mechanism, and for example in the present embodiment, an end of sliding axle 164 is connected with annular installation portion 165, and lens combination 166 is sticked in annular installation portion 165.Lens combination 166 comprises at least one lens.Lens combination comprises lens in the middle of the present embodiment.
In the light table 100 of present embodiment, sliding axle 164 can rotate around first cylindrical shell 161 with rotating part 162, that is to say that sliding axle 164 can rotate in the face parallel with worktable 10 surfaces.And sliding axle 164 can endwisely slip at the through hole 1623 of the manual lower edge of operator second cylindrical shell 1621.In conjunction with these two motions, lens combination 166 can converge to the light that light source 14 sends on the worktable 10 surperficial optional positions, and when worktable 10 surfaces were provided with circuit board, the light luminance of circuit board surface increased, and makes circuit board visual inspection is more prone to carry out.And in the light table 100 of present embodiment, do not need to increase the output power of light source, and therefore can reduce the consumption of energy, and the light source intrinsic brightness do not increase the light that makes on the overall optical table and is unlikely to bright especially, can slow down visual inspection personnel's visual fatigue.
Consult Fig. 3, the light table of second embodiment is similar to the light table of first embodiment, but further comprises a secondary light source 18.Secondary light source 18 comprises sway brace 182, reflex housing 184 and illuminating part 186.Sway brace 182 1 ends are connected on the sliding axle 264, and the other end is connected on the reflex housing 184, and illuminating part 186 is installed in the reflex housing 184.Illuminating part 186 phase duplet lens systems 266 are provided with, thereby the light that illuminating part 186 sends can converge the back outgoing via lens combination 266.Preferably, illuminating part 186 can be positioned on the focus of lens combination 266, thereby can parallel outgoing after lens combination 266 converges from the light of illuminating part 186 emissions.The light of parallel outgoing will pass through hole more easily, and is more suitable when detecting through hole.
In the light table of present embodiment, in the position relative with lens combination 266 secondary light source 18 is set, the surface that is transmitted into lens combination 266 that the light of secondary light source 18 can be very concentrated is used to improve the brightness on worktable 10 surfaces after lens combination 266 converges.
In addition, those skilled in the art also can do other variation in spirit of the present invention.Certainly, the variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (8)
1. light table that is used for circuit board detecting, it comprises worktable, is installed on the outer cover of this worktable, and at least one light source, it is characterized in that, further comprise a beam condensing unit, this beam condensing unit comprises first cylindrical shell, rotating part, sliding axle and a lens combination, this first cylindrical shell is arranged at this worktable, this rotating part comprises the rotating shaft and second cylindrical shell, described rotating shaft one end is located in first cylindrical shell, the other end is connected in this second cylindrical shell, and this sliding axle one end slidably is located in described second cylindrical shell, and the other end links to each other with lens combination.
2. the light table that is used for circuit board detecting as claimed in claim 1 is characterized in that described rotating shaft is vertical with described second cylindrical shell.
3. the light table that is used for circuit board detecting as claimed in claim 1 is characterized in that this first cylindrical shell is perpendicular to the surface of this worktable.
4. the light table that is used for circuit board detecting as claimed in claim 1 is characterized in that the described sliding axle other end is connected with annular installation portion.
5. the light table that is used for circuit board detecting as claimed in claim 1 is characterized in that, further comprises a secondary light source, and this secondary light source is connected in this sliding axle and this lens combination setting relatively.
6. the light table that is used for circuit board detecting as claimed in claim 5, it is characterized in that described secondary light source comprises sway brace, reflex housing and illuminating part, this sway brace is connected in this sliding axle, this reflex housing is installed in this sway brace one end, and this illuminating part is installed in this reflex housing.
7. the light table that is used for circuit board detecting as claimed in claim 1 is characterized in that, this first cylindrical shell is arranged at this worktable below.
8. the light table that is used for circuit board detecting as claimed in claim 6 is characterized in that this illuminating part is positioned on the focus of this lens combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102020071A CN101408557B (en) | 2007-10-11 | 2007-10-11 | Circuit board visual inspection table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102020071A CN101408557B (en) | 2007-10-11 | 2007-10-11 | Circuit board visual inspection table |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101408557A CN101408557A (en) | 2009-04-15 |
| CN101408557B true CN101408557B (en) | 2010-11-17 |
Family
ID=40571654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007102020071A Expired - Fee Related CN101408557B (en) | 2007-10-11 | 2007-10-11 | Circuit board visual inspection table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101408557B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844926Y (en) * | 2005-11-28 | 2006-12-06 | 比亚迪股份有限公司 | Flexible PCB inspecting clamp |
| CN101360417A (en) * | 2007-08-03 | 2009-02-04 | 富葵精密组件(深圳)有限公司 | Flexible printed circuit board visual inspection device |
-
2007
- 2007-10-11 CN CN2007102020071A patent/CN101408557B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844926Y (en) * | 2005-11-28 | 2006-12-06 | 比亚迪股份有限公司 | Flexible PCB inspecting clamp |
| CN101360417A (en) * | 2007-08-03 | 2009-02-04 | 富葵精密组件(深圳)有限公司 | Flexible printed circuit board visual inspection device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2007-234872A 2007.09.13 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101408557A (en) | 2009-04-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518103 Shenzhen Province, Baoan District Town, Fuyong Tong tail Industrial Zone, factory building, building 5, floor, 1 Co-patentee after: Zhending Technology Co., Ltd. Patentee after: Fuku Precision Components (Shenzhen) Co., Ltd. Address before: 518103 Shenzhen Province, Baoan District Town, Fuyong Tong tail Industrial Zone, factory building, building 5, floor, 1 Co-patentee before: Honsentech Co., Ltd. Patentee before: Fuku Precision Components (Shenzhen) Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20131011 |