CN102033311A - Endoscope - Google Patents
Endoscope Download PDFInfo
- Publication number
- CN102033311A CN102033311A CN 201010267000 CN201010267000A CN102033311A CN 102033311 A CN102033311 A CN 102033311A CN 201010267000 CN201010267000 CN 201010267000 CN 201010267000 A CN201010267000 A CN 201010267000A CN 102033311 A CN102033311 A CN 102033311A
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- CN
- China
- Prior art keywords
- reflection part
- peristome
- insertion section
- endoscope
- housing parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Endoscopes (AREA)
- Optical Elements Other Than Lenses (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
The present invention provides an endoscope which can prevent falling of a reflection frame more reliably. The endoscope (1) comprises the following components: a light source part (3) which is fixed to the bottom end of an insertion part (2) for irradiating illumination light; an annular reflection component (4) which is provided with a reflection surface (4a) that is configured around the light source part (3); and a cap-shaped outer frame component (8). The bottom of the insertion part (2) is inserted into the outer frame component (8) along a long axis direction of the insertion part (2). The outer frame component (8) is provided with an opening (10) which is configured at a position that is corresponding with the light source part (3) and the reflection component (4) at a state that the bottom of the insertion part (2) is inserted into the outer frame component (8). The opening (10) causes the exposure of the light source part (3) and the reflection component (4). The outer shape of the reflection component (4) is larger than that of the opening (10).
Description
Technical field
The present invention relates to a kind of endoscope.
Background technology
In the past, the known endoscope that such side-view type is arranged: in order to illuminate range of observation rightly, the outside at the led chip of the end of the insertion section that is disposed at endoscope has the reflection frame, and this reflection frame is configured to surround led chip integral body (for example, with reference to patent documentation 1).
About the endoscope in this patent documentation 1, the housing parts of cap shape are inserted along long axis direction with the mode that covers the led chip that is installed on the insertion section end and the objective lens optical system end side from the insertion section, thereby led chip is configured in the peristome of these housing parts, be installed on this peristome by reflecting frame, led chip integral body is surrounded from radial outside.
Patent documentation 1: TOHKEMY 2006-192027 communique
But, be installed on the structure of patent documentation 1 of peristome of housing parts will reflecting frame from radial outside, the possibility that exists the reflection frame to come off laterally, can expect such unfavorable condition: when the reflection frame came off under the insertion section is inserted in state in the observed object, the reflection frame that comes off can remain in the observed object.
Particularly, in order the reflection frame can there to be omit the light of all wavelengths that the ground reflection sends from led chip, need carry out the silver-plated surface treatment that improves reflectivity that waits to the reflection frame.But when mother metal was aluminium, silver-plated cementability was very low, can't improve reflecting properties, wished that therefore the very high high melting point metal materials of the silver-plated cementability of use as brass is as mother metal.
That is, in the endoscope of the possible patent documentation 1 that aforesaid existence comes off, can't use high melting point metal materials to be used as reflecting frame, existence can not utilize the possibility of the photocurrent versus light intensity of led chip fully.
Therefore, be desirable to provide a kind of endoscope that comes off that can prevent to reflect frame more reliably.
Summary of the invention
The invention provides a kind of endoscope, this endoscope comprises: light source portion, and the end that it is fixed in the insertion section is used for irradiating illumination light; The reflection part of ring-type, it has the reflecting surface of configuration peripherally that surrounds described light source portion; And the housing parts of cap shape, the end of described insertion section is inserted in the described housing parts along the long axis direction of this insertion section, be provided with peristome at described housing parts, this peristome is disposed at end in described insertion section and inserts under the state of described housing parts and described light source portion and the corresponding position of described reflection part, this peristome exposes described light source portion and described reflection part, and the profile of described reflection part is bigger than described peristome.
According to the present invention, when the end with the insertion section is inserted into the housing parts, the end of insertion section is covered by the housing parts, and light source portion and reflection part expose from the peristome that is arranged at the housing parts, thereby shine from the radial outside of peristome to the insertion section from the illumination light that light source portion is sent and the parts that are reflected reflect.Prevented the big reflection part of profile ratio open portion through peristome to radially coming off.Therefore, can use refractory metal materials such as brass,, can make from the illumination light of light source portion and shine to the outside more reliably by implementing the silver-plated surface treatment of Denging as reflection part.
In foregoing invention, preferably, described reflection part forms circular, and described peristome forms circle, and the outside dimension of described reflection part is bigger than the internal diameter size of described peristome.
Thus, no matter which type of angle reflection part is configured to respect to peristome, can both stop reflection part to come off through peristome.
In addition, in foregoing invention, described peristome is sealed by window component, this window component is made of material transparent on the optics.
Thus, prevented that dust etc. from invading the inside of housing parts from the peristome of outside through being sealed by window component of housing parts, can make light source portion and the reflection part keep the state of cleaning.In this case,, can prevent that also reflection part from coming off from peristome, can prevent that therefore the reflection part that comes off from remaining in the generation of the unfavorable condition in the observed object even open thereby the damaged peristome that causes takes place window component.
In addition, in foregoing invention, preferably, described endoscope comprises: image pickup optical system, its end in described insertion section are disposed at and described reflection part position adjacent; And obstructing part, its radially insertion from described peristome along described insertion section, and be disposed at the position of blocking the gap between described reflection part and the described housing parts between described image pickup optical system and the described reflection part at least, and this obstructing part is made of aluminum or aluminum alloy.
Thus, when sending from light source portion and the illumination light irradiation of the parts reflection of being reflected during to observed object, in the range of exposures of observed object reflection takes place and the back light that returns incides the image pickup optical system with the light source portion disposed adjacent, and be taken.Owing to need the long axis direction of housing parts along the insertion section be inserted with respect to the end of the insertion section that reflection part is installed, so between reflection part and housing parts, be formed with the gap, but the gap is blocked by the obstructing part that radially inserts from peristome along the insertion section, therefore can prevent the generation of the unfavorable condition of sending and leaking to the image pickup optical system side from the circuitous laterally illumination light of the end of reflection part from light source portion.The obstructing part that is made of the aluminum or aluminum alloy as low melting point metal material need not to require high reflectance in order to bring into play the function that prevents light leak, in addition, also is out of question even obstructing part comes off laterally from the housing parts.
In foregoing invention, also described obstructing part can be formed the ring-type of surrounding described reflection part.
Thus, can be in the gap between complete cycle scope internal congestion reflection part and the housing parts, can prevent to photograph the generation of the unfavorable condition of light leak more reliably.
In addition, in foregoing invention, preferably, implemented silver-plated at the described reflecting surface of described reflection part.
Thus, can make the reflecting surface of reflection part have high reflectivity, can make the illumination light of sending from light source portion have the irradiation of the ground of omission to observed object.
According to the present invention, has the effect that comes off that can prevent to reflect frame more reliably.
Description of drawings
Fig. 1 is the partial, longitudinal cross-sectional of the end portion of the related endoscope of expression an embodiment of the invention.
Fig. 2 is the state of housing parts has been unloaded in expression from the terminal part of the endoscope of Fig. 1 a partial, longitudinal cross-sectional.
To be expression carried out the partial, longitudinal cross-sectional of the state that decomposes from the external members of frame of terminal part of the endoscope of Fig. 1 etc. to Fig. 3.
Fig. 4 is the partial, longitudinal cross-sectional that the terminal part that is illustrated in the endoscope of Fig. 2 is equipped with the state of housing parts.
Fig. 5 is that the obstructing part of expression ring-type is inserted in the partial, longitudinal cross-sectional of the state the terminal part of endoscope of Fig. 4 from peristome.
Fig. 6 is that longitudinal section is amplified in the part that the peristome of terminal part that is illustrated in the endoscope of Fig. 5 is assembled with the state of glass plate.
Label declaration
1: endoscope; 2: the insertion section; 3:LED packaging body (light source portion); 4: reflection part; 4a: reflecting surface; 5: image pickup optical system; 8: the housing parts; 10: peristome; 12: ring component (obstructing part); 13: glass plate (window component).
Embodiment
Below, with reference to accompanying drawing, the endoscope 1 related to an embodiment of the invention describes.
As shown in Figure 1, the related endoscope 1 of present embodiment has the elongated insertion section 2 that is inserted in the observed object.
2 end is fixed with in the insertion section: LED packaging body (light source) 3, and it is towards radial outside irradiating illumination light; Reflection part 4, it is configured in the position on every side that surrounds this LED packaging body 3; And the prism 6 and the lens 7 that constitute image pickup optical system 5, they are disposed on the long axis direction of insertion section 2 and LED packaging body 3 position adjacent.
In addition, 2 end is equipped with housing parts 8 in the insertion section.
Image pickup optical system 5 comprises: object lens 9, and it is arranged at housing parts 8; Prism 6, it is fixed in insertion section 2 ends; And collector lens 7, it makes by the optical convergence after described prism 6 reflections.Object lens 9 have negative refracting power, and its autogamy in the future places the light of wide range of observation of the radial outside of insertion section 2 ends to compile the light beam that is used as almost parallel and incides prism 6.Prism 6 makes the light of going into to shine from the object lens 9 sides long axis direction reflection to insertion section 2, thereby this light is incided be disposed at the collector lens 7 at these prism 6 rear portions.Collector lens 7 makes the optical convergence of injecting from prism 6 sides and is injected into the imaging apparatus (omitting diagram) that is disposed at these collector lens 7 rear portions.
This peristome 10 forms circular, and has the big slightly bore of maximum outside diameter than the reflecting surface 4a of reflection part 4.In addition, in the periphery of reflection part 4, be formed with the end difference 4b that more protrudes than the maximum outside diameter of reflecting surface 4a to the radial direction outside.The bore that the outside dimension of this end difference 4b forms ratio open portion 10 is big slightly.Thus, the light after parts 4 reflections that are reflected is emitted to the radial direction outside through peristome 10, and on the other hand, reflection part 4 can not pass through peristome 10.
The radial direction position of the end of reflection part 4 is positioned at the position of leaning on the radial direction inboard than the inside surface position of housing parts 8 a little.Thus, housing parts 8 can be inserted into the end of insertion section 2 along long axis direction.
In addition, members of frame 8 is provided with entrance window portion 11 along axial and peristome 10 position adjacent outside, this entrance window portion 11 is opened in state that members of frame 8 outside is installed on insertion section 2 ends down and the prism 6 opposed positions that are arranged at insertion section 2, and this entrance window portion 11 is blocked into sealing state by above-mentioned object lens 9.
Around reflection part 4, be combined with the circular ring component (obstructing part) 12 that constitutes by aluminum or aluminum alloy.Ring component 12 and the end difference 4b butt that is arranged on around the reflection part 4, thus be positioned with respect to reflection part 4.
In addition, obstructing part also can be formed by resin or engineering plastics.Under this situation, compare easier formation with aluminum or aluminum alloy, thereby be preferred.
That is, obstructing part adopts and the equal low melting material of aluminium, thus, in the observed object of high temperature such as jet engine, even under the situation that this obstructing part comes off, also can suppress observed object is exerted an influence.
That is, by blocking the gap between reflection part 4 and the peristome 10, constitute the prism 6 of image pickup optical system 5 and the gap between the object lens 9 and also get clogged, the illumination light that can prevent to take place reflection in reflection part 4 is circuitous to image pickup optical system 5.
Under this ring component 12 and state that reflection part 4 cooperates, peristome 10 is blocked into sealing state by glass plate 13.
Next, the assemble method to the related endoscope 1 of the present embodiment of such formation describes.
As shown in Figure 2, by installing sleeve 15 matrix part 14 is fixed in the terminal part of insertion section 2.
Fixed L ED packaging body 3, reflection part 4, prism 6 and collector lens 7 on matrix part 14.
Under this state, the maximum outside diameter size of the position of matrix part 14 forms more much smaller than the internal diameter size of housing parts 8, thereby can will be mounted to the end that is covered in insertion section 2 from the end side of matrix part 14 as illustrated in fig. 4 near the housing parts 8 of this matrix part 14 as illustrated in fig. 3.Under the state before installation, the entrance window portion 11 of housing parts 8 is sealed by fixing object lens 9, and peristome 10 is in open state.After housing parts 8 have been installed, as shown in Figure 5, housing parts 8 are fixed in matrix part 14 by tightening screw 16.
Then, under this state, as shown in Figure 5, glass plate 13 is not installed and to be in the peristome 10 of open state consistent with LED packaging body 3 and reflection part 4, therefore ring component 12 is inserted into the outside of the terminal part of reflection part 4 from peristome 10.Owing to be provided with the end difference 4b that protrudes to the radial direction outside at reflection part 4, so thereby the ring component 12 that inserts is fixed in this position with end difference 4b butt.
After this, as shown in Figure 6, by embedding glass plates 13 at peristome 10 and carrying out bonding and peristome 10 is sealed, the related endoscope 1 of present embodiment is assembled thus.
Below, the effect of the related endoscope 1 of the present embodiment of such formation is described.
When using the related endoscope of present embodiment that observed object is observed, the insertion section 2 that terminal part is covered by housing parts 8 is inserted into the inside of observed object, and to LED packaging body 3 supply capabilities to produce illumination light.The reflecting surface 4a that the illumination light that produces from LED packaging body 3 is configured in the reflection part 4 around the LED packaging body 3 reflects.
Shine in the illumination light of range of observation and in range of observation, take place to reflect and return to the direction of insertion section 2, its part is assembled by the object lens 9 adjacent with peristome 10, thereby incide the prism 6 in the housing parts 8, and it is by collector lens 7 convergences, thereby captured by not shown imaging apparatus.
In this case, the endoscope 1 related according to present embodiment, owing to used refractory metal material such as brass as reflection part 4, and implemented silver-plated at reflecting surface 4a, so the illumination light that can send from LED packaging body 3 in very wide wavelength coverage internal reflection is with the irradiation range of observation.Thus, can improve the observation precision.
In addition, can produce the problem that resides in the observed object under the situation of reflection part 4 outside being shed to housing parts 8 that constitutes by high melting point metal materials, but the endoscope 1 related according to present embodiment can not produce such problem.Promptly, the endoscope 1 related according to present embodiment, compare with the internal diameter size of the peristome 10 that illumination light is penetrated, the outside dimension that is arranged at the end difference 4b of reflection part 4 forms greatlyyer, therefore, in observed object breakage having taken place even block the glass plate 13 of peristome 10, can prevent that also reflection part 4 is shed to the outside from peristome 10.
In addition, adopted such structure in order to adopt said structure: at matrix part 14 side fixation reflex parts 4, and from the top of this reflection part 4 along the insertion section housing parts 8 of 2 axial covering cap shape, therefore, as shown in Figure 6, though be formed with the gap A that is used to insert outside between members of frame 8 and the reflection part 4, but this gap A is blocked by the ring component 12 of aluminum or aluminum alloy system, therefore can prevent from reliably to leak to image pickup optical system 5 sides through this gap A from the illumination light of LED packaging body 3.
By such structure, because ring component 12 is made of low melting point metal materials such as aluminium, even,, can not become problem even ring component 12 resides in the observed object so breakage takes place glass plate 13 in observed object, ring component 12 has been shed to the outside from peristome 10 yet.
In addition, owing to utilize ring component 12 to cut off illumination light, utilize the device of the high brightness that big electric current drives to be used as LED packaging body 3 so can adopt from the path that reflection part 4 side direction image pickup optical systems 5 sides are leaked.Thus, thus have and can penetrate the advantage that bright illumination light obtains distinct observation image.
In addition, by forming circular as the ring component 12 of obstructing part, the size that is arranged at the end difference 4b of reflection part 4 can be suppressed to be Min., and prevent ring component 12 reliably from the coming off of the peristome 10 of circle, but also can adopt other shape to replace circular.
In addition, by constituting the structure that is provided with the gap between reflection part 4 and ring component 12 at the optical axis direction of LED packaging body 3, can improve the reliability of LED packaging body 3.
That is, be accompanied by the luminous of LED packaging body 3, reflection part 4 thermal expansions, and by the gap between reflection part 4 and ring component 12 is set can relax because both coefficient of thermal expansion differences and apply stress to LED packaging body 3 from reflection part 4.And, by above-mentioned gap is set, can also tackle the deviation that the individual difference because of LED packaging body 3 produces, therefore can make endoscope with very high production efficiency.
As concrete structure, more form the gap or so that the installation site of ring component 12 does not form the gap with the mode that the upper surface of reflection part 4 contacts by the position of top as long as be arranged at than the end difference 4b of reflection part 4 by installation site with ring component 12.
Claims (6)
1. an endoscope is characterized in that,
Described endoscope comprises:
Light source portion, the end that it is fixed in the insertion section is used for irradiating illumination light;
The reflection part of ring-type, it has the reflecting surface of configuration peripherally that surrounds described light source portion; And
The housing parts of cap shape, the end of described insertion section is inserted in the described housing parts along the long axis direction of this insertion section,
Be provided with peristome at described housing parts, this peristome is disposed at end in described insertion section and inserts under the state of described housing parts and described light source portion and the corresponding position of described reflection part, and this peristome exposes described light source portion and described reflection part,
The profile of described reflection part is bigger than described peristome.
2. endoscope according to claim 1 is characterized in that,
Described reflection part forms circular,
Described peristome forms circle,
The outside dimension of described reflection part is bigger than the internal diameter size of described peristome.
3. endoscope according to claim 1 is characterized in that,
Described peristome is sealed by window component, and this window component is made of material transparent on the optics.
4. endoscope according to claim 1 is characterized in that,
Described endoscope comprises:
Image pickup optical system, its end in described insertion section are disposed at and described reflection part position adjacent; And
Obstructing part, its radially insertion from described peristome along described insertion section, and be disposed at the position of blocking the gap between described reflection part and the described housing parts between described image pickup optical system and the described reflection part at least, and this obstructing part is made of aluminum or aluminum alloy.
5. endoscope according to claim 4 is characterized in that,
Described obstructing part forms the ring-type of surrounding described reflection part.
6. according to each the described endoscope in the claim 1 to 5, it is characterized in that,
Described reflecting surface at described reflection part has been implemented silver-plated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009224927A JP5603583B2 (en) | 2009-09-29 | 2009-09-29 | Endoscope |
| JP2009-224927 | 2009-09-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102033311A true CN102033311A (en) | 2011-04-27 |
| CN102033311B CN102033311B (en) | 2013-08-21 |
Family
ID=43886429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010267000 Expired - Fee Related CN102033311B (en) | 2009-09-29 | 2010-04-20 | Endoscope |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5603583B2 (en) |
| CN (1) | CN102033311B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI450703B (en) * | 2011-09-27 | 2014-09-01 | ||
| CN108814529A (en) * | 2018-03-06 | 2018-11-16 | 重庆金山医疗器械有限公司 | A kind of lighting system based on fujinon electronic video endoscope |
| CN112965235A (en) * | 2021-02-04 | 2021-06-15 | 深圳市微视光电科技有限公司 | Endoscope probe |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020070862A1 (en) * | 2018-10-04 | 2020-04-09 | オリンパス株式会社 | Leading end part of endoscope |
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| CN1626027A (en) * | 2003-12-10 | 2005-06-15 | 奥林巴斯株式会社 | Endoscope |
| CN1777392A (en) * | 2003-04-25 | 2006-05-24 | 奥林巴斯株式会社 | Capsule endoscope and capsule endoscope system |
| JP2006192027A (en) * | 2005-01-12 | 2006-07-27 | Olympus Corp | Endoscope apparatus |
| WO2007125918A1 (en) * | 2006-04-25 | 2007-11-08 | Olympus Medical Systems Corp. | Encapsulated endoscope |
| CN101164495A (en) * | 2006-10-17 | 2008-04-23 | 奥林巴斯医疗株式会社 | Endoscopes |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH01183620A (en) * | 1988-01-14 | 1989-07-21 | Nippon Steel Corp | Probe for optical fiber |
| JPH06160614A (en) * | 1992-11-25 | 1994-06-07 | Ekuesutorian:Kk | Reflecting mirror |
| JP3381566B2 (en) * | 1997-07-18 | 2003-03-04 | ウシオ電機株式会社 | Light source unit |
| JP4511210B2 (en) * | 2004-02-09 | 2010-07-28 | オリンパス株式会社 | Endoscope device |
| JP5106094B2 (en) * | 2007-02-22 | 2012-12-26 | シャープ株式会社 | Surface mount type light emitting diode and method for manufacturing the same |
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2009
- 2009-09-29 JP JP2009224927A patent/JP5603583B2/en not_active Expired - Fee Related
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2010
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1777392A (en) * | 2003-04-25 | 2006-05-24 | 奥林巴斯株式会社 | Capsule endoscope and capsule endoscope system |
| CN1626027A (en) * | 2003-12-10 | 2005-06-15 | 奥林巴斯株式会社 | Endoscope |
| JP2006192027A (en) * | 2005-01-12 | 2006-07-27 | Olympus Corp | Endoscope apparatus |
| WO2007125918A1 (en) * | 2006-04-25 | 2007-11-08 | Olympus Medical Systems Corp. | Encapsulated endoscope |
| CN101164495A (en) * | 2006-10-17 | 2008-04-23 | 奥林巴斯医疗株式会社 | Endoscopes |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI450703B (en) * | 2011-09-27 | 2014-09-01 | ||
| CN108814529A (en) * | 2018-03-06 | 2018-11-16 | 重庆金山医疗器械有限公司 | A kind of lighting system based on fujinon electronic video endoscope |
| CN112965235A (en) * | 2021-02-04 | 2021-06-15 | 深圳市微视光电科技有限公司 | Endoscope probe |
| CN112965235B (en) * | 2021-02-04 | 2022-09-30 | 深圳市微视光电科技有限公司 | Endoscope probe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102033311B (en) | 2013-08-21 |
| JP2011075670A (en) | 2011-04-14 |
| JP5603583B2 (en) | 2014-10-08 |
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