CN101637380A - Endoscope and manufacturing method thereof - Google Patents
Endoscope and manufacturing method thereof Download PDFInfo
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- CN101637380A CN101637380A CN200810142226A CN200810142226A CN101637380A CN 101637380 A CN101637380 A CN 101637380A CN 200810142226 A CN200810142226 A CN 200810142226A CN 200810142226 A CN200810142226 A CN 200810142226A CN 101637380 A CN101637380 A CN 101637380A
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- endoscope
- fixed mount
- imaging device
- imageing sensor
- wiring board
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Abstract
The invention discloses an endoscope and a manufacturing method thereof. The endoscope comprises a mirror tube, an imaging device, an image sensor which converts an optical signal of the imaging device into an electric signal, and a circuit board which arranges and outputs the electric signal, wherein the imaging device, the image sensor and the circuit board are positioned in the mirror tube. Theendoscope also comprises a mounting bracket, wherein the mounting bracket is positioned in the mirror tube; and one end of the mounting bracket is connected with the output end of the imaging deviceto form a first component, while the other end positions the image sensor. By adopting the structure, the mounting bracket realizes accurate positioning between the imaging device and the image sensor, ensures the imaging quality, and saves a plurality of other connecting pieces, so that the structure and manufacture of the whole endoscope can be simpler.
Description
Technical field
The present invention relates to the endoscopic technique field, more particularly, relate to a kind of inner pinpoint endoscope of each assembly and manufacture method thereof of realizing.
Background technology
Hard tube formula of the prior art endoscope is made up of objective system, relay lens system, eyepiece system and mirror pipe usually.After handling, optical system on display, shows opticator normally in the preceding end mirror pipe of this kind endoscope, optical signal transmission distance by optical signal that objective system spread out of.Therefore, though the endoscope structure of this type is simple, image quality is relatively poor.
In order to shorten the optical signal transmission distance to improve image quality, a kind of fujinon electronic video endoscope has appearred in the prior art.It is made up of object lens, CCD (Charge Coupled Device, i.e. charge-coupled image sensor) imageing sensor, flexible circuit board, mirror pipe and operating system usually.In the mirror pipe, directly be converted into the signal of telecommunication by the optical signal that object lens spread out of, again through being presented on the display after the Flame Image Process via ccd image sensor.This mode has avoided hard tube formula endoscope because of the long loss of signal that causes of optical signal transmission distance, so the image quality height.But this structure will realize the accurate location between object lens, ccd image sensor and the flexible circuit board and be not easy.Usually need be in the mirror pipe filling adhesive and a plurality of connectors are set, thereby complex structure, manufacturing cost height.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of endoscope, and it can realize the accurate location of inner each assembly of mirror pipe, and simple in structure.
Another technical problem to be solved by this invention is to provide a kind of method of making above-mentioned endoscope, and it can realize the accurate location of inner each assembly of mirror pipe, and method is simple.
For endoscope of the present invention, its technical scheme is realized like this: this endoscope comprises mirror pipe, imaging device, convert the optical signal of described imaging device the imageing sensor of the signal of telecommunication to and with the wiring board of described signal of telecommunication arrangement and output, described imaging device, imageing sensor and wiring board all are positioned at described mirror pipe, described endoscope also comprises fixed mount, described fixed mount is positioned at described mirror pipe, the one end is connected with the outfan of described imaging device and forms first assembly, and its other end is located described imageing sensor.
For the manufacture method of endoscope of the present invention, its technical scheme is realized like this: this method may further comprise the steps:
1) imageing sensor and wiring board electric connection are one;
2) with fixed mount imaging device and imageing sensor focusing are fixed together;
3) assembly with imaging device, imageing sensor, adapter, wiring board and fixed mount is fixed in the mirror pipe.
Compared with prior art, realized accurate location between imaging device and the imageing sensor by fixed mount in the technique scheme, guaranteed image quality, and can also dispense many other connectors, make whole endoscope structure and make simpler.
Description of drawings
Fig. 1 is the STRUCTURE DECOMPOSITION sketch map of endoscope's one preferred embodiment among the present invention;
Fig. 2 is a cross-sectional schematic embodiment illustrated in fig. 1;
Fig. 3 is that the master of middle fixed mount embodiment illustrated in fig. 1 looks sketch map;
Fig. 4 is along the cross-sectional schematic of A-A line among Fig. 3;
Fig. 5 is along the cross-sectional schematic of B-B line among Fig. 3;
Fig. 6 is the schematic perspective view of middle adapter embodiment illustrated in fig. 1;
Fig. 7 is the cross-sectional schematic of Fig. 6.
The specific embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Please refer to Fig. 1 and Fig. 2, be a preferred embodiment of endoscope of the present invention.This endoscope comprises mirror pipe 1, imaging device 2, convert the optical signal of imaging device 2 imageing sensor 3 (as the ccd image sensing etc.) of the signal of telecommunication to and with the wiring board 4 of signal of telecommunication arrangement and output.Described imaging device 2, imageing sensor 3 and wiring board 4 all are positioned at mirror pipe 1.Endoscope also comprises fixed mount 5, and fixed mount 5 is positioned at mirror pipe 1, and the one end is connected with the outfan of imaging device 2 and forms first assembly, and its other end is to imageing sensor 3 location.Like this, present embodiment realized accurate location between imaging device 2 and the imageing sensor 3 having guaranteed image quality by fixed mount 5, and can also dispense many other connectors, makes that the structure of whole endoscope is simpler.Below respectively above-mentioned each ingredient is described in detail respectively.
Described imaging device 2 is positioned at the front end of mirror pipe 1, and it comprises camera lens 21 and the lens set 22 that is positioned at mirror pipe 1 front end, and the outfan of imaging device 2 is fixedlyed connected by some glue with an end of fixed mount 5.Described lens set 22 comprises sleeve 221 and is positioned at the lens set 222 of sleeve 221.
Inwall in mirror pipe 1 also fixedly is equipped with optical fiber 6 by glue, and optical fiber 6 with illuminating around the camera lens 21, provides light source by external light source during for camera lens 21 shooting picture.
Described wiring board 4 can be pcb board (Printed Circuit Board, printed circuit board (PCB)) or flexible circuit board, and in the present embodiment, wiring board 4 is a pcb board, and the connection by pcb board can make the structure in the mirror pipe 1 more stable, and performance is more reliable.
Please refer to Fig. 3 to Fig. 5, fixed mount 5 is cylindrical, and the one end is sheathed and be fixed on the outfan of imaging device 2, and the other end is to imageing sensor 3 location.In the present embodiment, an end of fixed mount 5 is along the outer wall that axially is sheathed on part sleeve 221 of mirror pipe 1, and it is fixedly connected to pass through some glue.Since lens set 22 when transmitting optical signal and the focal length between the imageing sensor 3 mistake very (focal length need regulate distance can reach 1mm) is arranged, like this, can be in the process of a glue fixed muffle 221 and fixed mount 5, axially adjust the relative position of lens set 222 and imageing sensor 3, realize focusing.As other embodiment, said fixing frame 5 also can axially being set on the entire sleeve 221 along mirror pipe 1; Certainly, also can omit sleeve 221, and with fixed mount 5 along axially directly being set on the lens set 222 of mirror pipe 1, at this moment, can only realize focusing (seeing aftermentioned for details) by adjusting imageing sensor 3.
Please, in the present embodiment, be the location between reinforcement imageing sensor 3 and the wiring board 4 in conjunction with reference Fig. 6 and Fig. 7, and the transmission range of dwindling optical signal, to have reduced the loss of signal in transmission course, described endoscope also comprises adapter 7.Adapter 7 forms second assembly with imageing sensor 3 and wiring board 4 electric connections for one.The other end of fixed mount 5 is sheathed and be fixed on the adapter 7, thereby connects into first assembly and second assembly as a whole.
When assembling above-mentioned second assembly, imageing sensor 3 welds together by SMT (Surface Mounted Technology, surface mounting technology) with the composition surface 70 of adapter 7, electrically connects thereby form with the butt end 721 of terminal 72; The pin portion 722 of the input of wiring board 4 and terminal 72 electrically connects.
Please in conjunction with reference Fig. 3, Fig. 5 and Fig. 6, inwall at fixed mount 5 is provided with one along mirror pipe 1 axially extended strip groove 51, be provided with the boss 74 that can cooperatively interact on the lateral wall of adapter 7 bodies 71 with the groove 51 on the fixed mount 5, when adapter 7 was installed on the fixed mount 5, boss 74 inserted in the groove 51.Because the imageing sensor 3 and the wiring board 4 that are connected with adapter 7 all have directivity, therefore, boss 74 also has the function of direction indication, mistakes one's bearings in the time of can preventing operator's installation diagram image-position sensor 3 and wiring board 4.Be appreciated that the above-mentioned boss 74 and the position of groove 51 can exchange, be about to the inwall that boss is arranged at fixed mount 5, groove is arranged at the outer wall of adapter 7, on adapter 7 and the fixed mount 5 concaveconvex structure that cooperatively interacts is arranged as long as guarantee.
The inwall of an end that cooperates with adapter 7 on the fixed mount 5 is provided with a glue groove 52, by the glue consumption of fixedlying connected between a glue groove 52 may command adapters 7 and the fixed mount 5.In the present embodiment, an end that cooperates with adapter 7 at fixed mount 5, radially has a gap along mirror pipe 1 between fixed mount 5 and the adapter 7, in the process that adopts glue fixed connector 7 and fixed mount 5, can be by focusing along the radiai adjustment adapter 7 of mirror pipe 1 and the relative position between the fixed mount 5.
Because fixed mount 5 thinnest parts only have 0.25mm, the position on the inwall of fixed mount 5 between the outfan of corresponding imaging device 2 and second assembly is provided with a stage portion 53, with reinforced structure.
Described fixed mount 5 can adopt metal dust injection molding technology (Metal Injection Molding is called for short MIM) machine-shaping, so that fixed mount 5 obtains better intensity and precision.The metal dust injection molding technology is a kind of forming technique that combines plastics injection and powder metallurgy advantage, and its specific practice is with after fine metal dust and the macromolecule adhesive Hybrid Heating, obtains shooting material of tool flowability, again via the injection machine injection mo(u)lding.Adopt the size of the fixed mount 5 that this technology makes more accurate, owing to combine metal dust, its intensity is greatly improved, thereby fixed mount 5 can do longlyer, realizes better locating effect.
The signal transduction process of present embodiment is such, and camera lens 21 captured pictures pass to the photosensitive area of imageing sensor 3 by lens set 22; 3 pairs of camera lenses of imageing sensor, 21 captured pictures carry out opto-electronic conversion, and this signal of telecommunication is sent to wiring board 4 carries out filtering; Be sent to after another wiring board (not shown) handles the final picture of output on the display device (not shown) by data wire 8 through the signal of telecommunication of filtering.
The manufacture method of present embodiment endoscope may further comprise the steps:
At first, imageing sensor 3 and wiring board 4 are formed second assembly by adapter 7 electric connections for one; With fixed mount 5 imaging device 2 and imageing sensor 3 focusing are fixed together; Meanwhile, lay optical fiber 6 at mirror pipe 1 inwall, and by glue that optical fiber 6 is fixing; At last, the assembly of imaging device 2, imageing sensor 3, adapter 7, wiring board 4 and fixed mount 5 being drawn in the mirror pipe 1 interior some glue that is equipped with optical fiber 6 fixes.After this, also can heat-treat optical fiber 6, one of heat treatment purpose is to make optical fiber 6 can bear the heat that is brought of external light source in the work process in the future, and heat treated another purpose is that optical fiber 6 is expanded, thereby each assembly in the mirror pipe 1 is combined closely.
In the process of above-mentioned connection imaging device 2 and fixed mount 5 or in the process of connection layout image-position sensor 3 and fixed mount 5, before fixing, also need focus: can focus with the relative position of fixed mount 5 by axial adjustment imaging device 2 along mirror pipe 1; Also can focus with the relative position of fixed mount 5 by the imageing sensor 3 of radially adjusting along mirror pipe 1; Can also adjust imaging device 2 and imageing sensor 3 simultaneously focuses with the relative position of fixed mount 5.
In addition, above-mentioned with fixed mount 5 fixedly in the process of imaging device 2 and imageing sensor 3, one end of fixed mount 5 is set on the adapter 7, its other end can be along on the entire sleeve that axially is set in imaging device 2 221 of mirror pipe 1 or be set on the part sleeve 221, also can omit sleeve 221, and the other end of fixed mount 5 is set on the lens set 222 of imaging device 2 fully along the axial of mirror pipe 1.
Realized accurate location between imaging device 2 and the imageing sensor 3 having guaranteed image quality by fixed mount 5 in the said method, and can also dispense many other connectors, made that the manufacturing of whole endoscope is simpler.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (22)
1, a kind of endoscope, comprise mirror pipe, imaging device, convert the optical signal of described imaging device the imageing sensor of the signal of telecommunication to and the wiring board of described signal of telecommunication arrangement and output, described imaging device, imageing sensor and wiring board all are positioned at described mirror pipe, it is characterized in that: described endoscope also comprises fixed mount, described fixed mount is positioned at described mirror pipe, the one end is connected with the outfan of described imaging device and forms first assembly, and its other end is located described imageing sensor.
2, endoscope as claimed in claim 1, it is characterized in that: described endoscope also comprises adapter, described imageing sensor and described wiring board electrically connect to one forms second assembly by described adapter, and the other end of described fixed mount is fixedlyed connected with described second assembly and made described first, second assembly form an integral body.
3, endoscope as claimed in claim 2 is characterized in that: described fixed mount in a tubular form, the one end is sheathed and be fixed on the outfan of described imaging device, its other end is sheathed and be fixed on described second assembly.
4, endoscope as claimed in claim 3 is characterized in that: be respectively equipped with the concaveconvex structure that can cooperatively interact on the correspondence position of described adapter outer wall and described fixed mount inwall.
5, endoscope as claimed in claim 3 is characterized in that: radially have a gap along described mirror pipe between described fixed mount and the described adapter.
6, endoscope as claimed in claim 5 is characterized in that: the inwall of the end that described fixed mount cooperates with adapter is provided with a glue groove.
7, endoscope as claimed in claim 3 is characterized in that: the position on the inwall of described fixed mount between the outfan of corresponding described imaging device and described second assembly is provided with stage portion.
8, as claim 1 or 5 described endoscopies, it is characterized in that: described imaging device comprises sleeve and is contained in lens set in the described sleeve, and described fixed mount axially is set on the entire sleeve or is set on the part sleeve along described mirror pipe.
9, as claim 1 or 5 described endoscopies, it is characterized in that: described imaging device comprises lens set, and described fixed mount axially is set on the described lens set fully along described mirror pipe.
10, endoscope as claimed in claim 2 is characterized in that: described adapter comprises body and a plurality of terminals that are arranged in the described body, and the two ends of described terminal electrically connect with described imageing sensor and described wiring board respectively.
11, endoscope as claimed in claim 10, it is characterized in that: described terminal has butt end and pin portion, the upper surface of described butt end is exposed to the end face of described body, and with the common composition surface that forms of described end face, described pin portion is extended by described butt end bending and forms, and it is stretched on the other end of described body.
12, endoscope as claimed in claim 11 is characterized in that: described imageing sensor is electrically connected at the composition surface of described adapter, and the pin portion of the input of described wiring board and described terminal electrically connects.
13, endoscope as claimed in claim 11 is characterized in that: outward-dipping extending somely is used to guarantee that described terminal combines the extension of fastness with body in the pin portion of described terminal.
14, endoscope as claimed in claim 1 is characterized in that: described endoscope also is included as the optical fiber that described imaging device provides light source, and described optical fibre installation is at described mirror inside pipe wall.
15, endoscope as claimed in claim 1 is characterized in that: described wiring board is pcb board or flexible circuit board.
16, endoscope as claimed in claim 1 is characterized in that: described fixed mount is processed by the metal dust injection molding technology.
17, a kind of manufacture method of endoscope as claimed in claim 1 may further comprise the steps:
1) described imageing sensor and wiring board electric connection are one;
2) with described fixed mount described imaging device and imageing sensor focusing are fixed together;
3) assembly with described imaging device, imageing sensor, wiring board and fixed mount is fixed in the described mirror pipe.
18, the manufacture method of endoscope as claimed in claim 17 is characterized in that: described step 2) by along the position of the described imaging device of axial adjustment of described mirror pipe or by focusing along the position of radially adjusting described imageing sensor of described mirror pipe.
19, the manufacture method of endoscope as claimed in claim 17 is characterized in that: described method also is included in described mirror inside pipe wall and lays optical fiber; When step 2) finish after, heat-treat and make described optical fiber to expand to described optical fiber, each assembly in the described outer tube is combined closely.
20, the manufacture method of endoscope as claimed in claim 17, it is characterized in that: described imaging device comprises sleeve and is contained in the interior lens set of described sleeve, described step 2) in, with described fixed mount axially being set on the entire sleeve or being set on the part sleeve along described mirror pipe.
21, the manufacture method of endoscope as claimed in claim 17 is characterized in that: described imaging device comprises lens set, described step 2) in, described fixed mount is set on the described lens set fully.
22, as the manufacture method of claim 17,20 or 21 described endoscopies, it is characterized in that: in the described step 1), described imageing sensor and wiring board electrically connect by a connector; Described step 2) in, described fixed mount is set on the described adapter.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810142226XA CN101637380B (en) | 2008-07-31 | 2008-07-31 | Endoscope |
| US12/346,745 US8216127B2 (en) | 2008-07-22 | 2008-12-30 | Endoscope and a method of manufacturing the same |
| EP09001972.0A EP2147629B1 (en) | 2008-07-22 | 2009-02-12 | An endoscope and a method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810142226XA CN101637380B (en) | 2008-07-31 | 2008-07-31 | Endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101637380A true CN101637380A (en) | 2010-02-03 |
| CN101637380B CN101637380B (en) | 2011-07-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810142226XA Expired - Fee Related CN101637380B (en) | 2008-07-22 | 2008-07-31 | Endoscope |
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| Country | Link |
|---|---|
| CN (1) | CN101637380B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634749B (en) * | 2008-07-22 | 2012-01-25 | 比亚迪股份有限公司 | Endoscope |
| CN106029250A (en) * | 2014-02-20 | 2016-10-12 | 奥林巴斯株式会社 | Pipe-fastening body, treatment tool, and fastening method |
| CN110604532A (en) * | 2018-06-15 | 2019-12-24 | 圻逸科技股份有限公司 | Manufacturing method and finished product of endoscope plastic lens |
| CN113288012A (en) * | 2021-04-30 | 2021-08-24 | 上海澳华内镜股份有限公司 | Endoscope camera device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58190913A (en) * | 1982-05-01 | 1983-11-08 | Olympus Optical Co Ltd | Strabismal hard endoscope |
| JP3967337B2 (en) * | 2004-05-14 | 2007-08-29 | オリンパス株式会社 | Endoscope and endoscope apparatus |
-
2008
- 2008-07-31 CN CN200810142226XA patent/CN101637380B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634749B (en) * | 2008-07-22 | 2012-01-25 | 比亚迪股份有限公司 | Endoscope |
| CN106029250A (en) * | 2014-02-20 | 2016-10-12 | 奥林巴斯株式会社 | Pipe-fastening body, treatment tool, and fastening method |
| CN106029250B (en) * | 2014-02-20 | 2018-08-28 | 奥林巴斯株式会社 | Pipe connected body, processing utensil and coupling method |
| CN110604532A (en) * | 2018-06-15 | 2019-12-24 | 圻逸科技股份有限公司 | Manufacturing method and finished product of endoscope plastic lens |
| CN113288012A (en) * | 2021-04-30 | 2021-08-24 | 上海澳华内镜股份有限公司 | Endoscope camera device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101637380B (en) | 2011-07-13 |
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