CN107569205A - A kind of endoscope - Google Patents
A kind of endoscope Download PDFInfo
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- CN107569205A CN107569205A CN201710857652.0A CN201710857652A CN107569205A CN 107569205 A CN107569205 A CN 107569205A CN 201710857652 A CN201710857652 A CN 201710857652A CN 107569205 A CN107569205 A CN 107569205A
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- optical system
- light
- lamp optical
- insertion section
- top ends
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Abstract
The present invention provides a kind of can make the top ends miniaturization of insertion section while ensure good observation visual field and improve the endoscope of pluggability improving the luminous intensity distribution performance of illumination light.The endoscope includes：The insertion section of tubulose, it has top ends；Light guide therefor, it is contained in insertion section, and is used for towards top ends guiding illumination light；And plano-concave lens, it is configured at the top ends of insertion section, and for carrying out optically focused from plano-concave lens and by the light of the viewing area of plano-concave lens illumination, the plano-concave lens to be used to irradiate the illumination light guided by light guide therefor；The end relative with plano-concave lens of light guide therefor along and the optical axises of object lens direction that be substantially parallel extension, the shoulder of top ends and positioned at shoulder plano-concave lens outer surface by be close to top and it is convergent in a manner of tilt.
Description
Technical field
The present invention relates to ability for the object of observation without being seen under the observation under free switching contact condition and contactless state
The endoscope examined.
Background technology
In the prior art, due to making inclined light shaft of the light guide therefor relative to photographing element, therefore the top ends of insertion section become
Greatly, cause to exist in body cavity, the pluggability of device interior etc. is affected this unfavorable condition.By improving, although being
Improve illumination light with photosensitiveness and the top ends in insertion section are provided with concavees lens or convex lens, but during in order to improve assembling
Positioning precision, raising prevent assembling capacity as bonding agent inflow, and the top ends in insertion section are provided with pawl.In order to prevent this
Pawl produces shading to range of exposures and widens the external diameter of illuminating lens, so that the top ends of insertion section further become big, causes
In the presence of in body cavity, the pluggability of device interior etc. reduce this unfavorable condition.
The content of the invention
The purpose of the present invention is to be directed to the present situation, there is provided a kind of luminous intensity distribution performance that can improve illumination light simultaneously ensures good
Field of view while minimize the top of insertion section and improve the endoscope of pluggability.
The technical solution adopted by the present invention：A kind of endoscope, including：
The insertion section of tubulose, it has top ends, along its length provided with two light guide cavitys；
Light conducting member, including the first light conducting member and the second light conducting member, it is respectively accommodated in two light guide chambers
In vivo, and it is used for towards the top ends guiding illumination light；
Swing mechanism, it is arranged between each light conductor cavity and the light conducting member therein, is led described in control
Light component does circumferential movement and swing along the light conductor cavity；
First lamp optical system, it is arranged at the end side of first light conducting member, and for making described in
Light diffusion occurs for the first illumination light that the first light conducting member projects, and makes the optical axis of first illumination light towards described right
The direction of the optical axis of object optical system reflects and is irradiated；
Second lamp optical system, it is arranged at the end side of second light conducting member, and for making described in
Light diffusion occurs for the second illumination light that the second light conducting member projects, and makes the optical axis of second illumination light towards described right
The direction of the optical axis of object optical system and the optical axis of first illumination light reflects and is irradiated；And
The insertion section of tubulose, it has top ends；
First lamp optical system and second lamp optical system are configured at the top of the insertion section
Portion and it is configured at and turns into the substantially symmetrical position of minute surface with respect to the plane of the optical axis to object optical system,
The shoulder of the top ends and first lamp optical system positioned at the shoulder and second light optics
The outer surface of system by be close to top and it is convergent in a manner of tilt,
When being watched from the optical axis direction to object optical system, first lamp optical system and second photograph
The inclined direction of the approximate centre of the outer surface of bright optical system is with passing through the center to object optical system, institute
The straight line institute angle degree for stating the center of the first lamp optical system and second lamp optical system is less than 30 °.
The beneficial effects of the invention are as follows：According to the present invention, ensuring good with photosensitiveness raising for illumination light can be made by playing
The top ends of insertion section are made to minimize and improve the effect of pluggability while the observation visual field got well.
Brief description of the drawings
Involved accompanying drawing is simply introduced in being described to the embodiment of the present invention, in order to in the embodiment of the present invention
Technical scheme become apparent from, completely illustrated, following accompanying drawing is only for some embodiments of the present invention, not limiting
The system present invention, on the premise of without other creative works, it is clear that other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the endoscope of one embodiment of the present invention；
The schematic diagram of light guide therefor cavity when Fig. 2A is the top observation of the insertion section from Fig. 1；
Front view when Fig. 2 B are the tip side viewings of the insertion section from Fig. 1；
Fig. 3 A are the figures of the incline direction for the plano-concave lens for illustrating Fig. 1, are from the main view during top ends viewing of insertion section
Figure；
Fig. 3 B are the figures of the incline direction for the plano-concave lens for illustrating Fig. 1, are the figures for representing to observe visual field；
Fig. 3 C are the figures of the incline direction for the plano-concave lens for illustrating Fig. 1, are longitudinal sections along inclined direction；
Fig. 4 is from the front view during tip side viewing of the insertion section of the first variation；
Fig. 5 A are the figures of the curve form for the plano-concave lens for illustrating the second variation, are from during the tip side viewing of insertion section
Front view；
Fig. 5 B are the figures of the curve form for the plano-concave lens for illustrating the second variation, are that the vertical profile along inclined direction intercepted regards
Figure；
Fig. 5 C are the figures of the curve form for the plano-concave lens for illustrating the second variation, are along the direction orthogonal with incline direction
The longitudinal section of interception；
Fig. 6 is the schematic diagram of the endoscope of the 3rd variation；
Fig. 7 is the figure of the effect for the endoscope for illustrating Fig. 1；
Fig. 8 is the schematic diagram of the endoscope of the 4th variation；
Fig. 9 is the schematic diagram of the endoscope of the 5th variation；
Figure 10 is the schematic diagram of conventional endoscope.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
The main composition key element of endoscope 1 includes：Insertion section 13, it has the shape of tubulose, and for being inserted into body cavity
Interior, device interior etc. and obtain inside image；Light supply apparatus (omits diagram), and it is used to make illumination light incide insertion section
13；Image processing part (omits diagram), and it is used to carry out image procossing to the image obtained by insertion section 13；And display part
(omitting diagram), it is used to show the image after carrying out image procossing.
As shown in figure 1, insertion section 13 includes：Two light guide therefors (light conducting member) 15, it is contained in along the length of insertion section 13
In the light guide therefor cavity 131 that direction is set, the both sides of the close fore-end of each light guide therefor 15 are equipped with swing mechanism 151,
To control connected light guide therefor 15 to swing；Object lens (to object optical system) 19, it is configured at the top ends 11 of insertion section 13；And
A pair of plano-concave lens (lamp optical system) 17, it configures in the top ends 11 of insertion section 13 and is being close to radius side than object lens 19
Position laterally.In addition, formed with shoulder 21 in the top ends 11 of insertion section 13, shoulder 21 with top is close to receive
The mode held back tilts.
Light guide therefor 15 can be optical fiber, and its base end part is connected to light supply apparatus (not shown), and its leading section passes through oscillating machine
Structure 151 is movably arranged in insertion section 13, is guided towards top ends 11 and is projected from the light supply apparatus and incide the photograph of base end part
Mingguang City.The end relative with plano-concave lens 17 of light guide therefor 15 direction that be substantially parallel extension along the optical axis L with object lens 19.
Such as Fig. 2A, swing mechanism 151 includes three the first sliding grooves 152 being parallel to each other, three edges of the first sliding groove 152
The inwall of light guide therefor cavity 131 is set, and each first sliding groove 152 is vertical with the length direction of light guide therefor cavity 131, excellent
Selection of land, positioned at centre the first sliding groove 152A diameter be all higher than be located at close to front end the first sliding groove 152B and positioned at by
First sliding groove 152C of nearly rear end.The second sliding groove of at least four 153, and any are provided between three the first sliding grooves 152
Two sliding groove 153A are present relative to symmetrical another the second sliding groove 153B of light guide therefor 13.
Two connecting rod 153C are provided between the sliding groove 152A of light guide therefor 15 and first, and connecting rod 153C is on light guide therefor
15 axisymmetrical, connecting rod 153C can slide along the first sliding groove 152A and the second sliding groove 153.
Any connecting rod 153C middle part is provided with a front stretching bar 154, length side of the front stretching bar 154 along light guide therefor 15
To extending and being connected on the first sliding groove 152B, front stretching bar 154 can slide along the first sliding groove 152A.Another connecting rod
153C middle part is provided with a rear telescopic rod 155, and length direction of the rear telescopic rod 155 along light guide therefor 15 extends and movably connected
Be connected on on the first sliding groove 152C.Front stretching bar 154 and rear telescopic rod 155 extend and compressed, the company for controlling it to connect respectively
Extension bar 153C is swung, meanwhile, front stretching bar 154 and rear telescopic rod 155 can do circumferential movement along the first sliding groove 152, realize light
Diverse location is swung guiding element 15 in a circumferential direction, increases observation illumination region.
Front stretching bar 154, rear telescopic rod 155 and connecting rod 153c are controlled by the transmission of cylinder (not shown).
Plano-concave lens 17 be outer surface be plane and inner surface be curved surface concavees lens, make the photograph guided by light guide therefor 15
Mingguang City's diffusion is irradiated to the viewing area A relative with top ends 11.
The top ends 11 of plano-concave lens 17 and insertion section 13 are pairs by using opaque resin and transparent resin
Color shape and it is integrally formed.Specifically, plano-concave lens 17 is formed as wall thickness with the inside of the radial direction of insertion section 13
And increase, positioned at the outer surface of shoulder 21 be by be close to top and it is convergent in a manner of inclined shape.Thus, such as Fig. 1 institutes
Show, reflected in the direction of the rear optical axis L to towards object lens 19 of concave surface diffusion and shone by the illumination light that light guide therefor 15 guides
Penetrate.
Object lens 19 are used to carry out optically focused to the light from the viewing area A illuminated by plano-concave lens 17.Utilize the meeting of object lens 19
Light after poly- is imaged on photographing element (not shown), is converted to electric signal and is sent to image processing part (not shown).
Two plano-concave lens 17 are close to the position of base end side on the top being axially disposed than object lens 19 of insertion section 13.
Because object lens 19 with the wider angle of visual field due to easily receiving the light of surrounding.That is, sometimes from two plano-concave lens
17 illumination light is directly incident on object lens 19 and produces veiling glare on observation image.In order to prevent the veiling glare, leaned on than object lens 19
To the position of base end side, two plano-concave lens 17 are set.
Fig. 2 B are from the front view during tip side viewing of insertion section 13.As shown in Figure 2 B, in the top ends of insertion section 13
Object lens 19 and a pair of plano-concave lens 17 are provided with 11.In addition, though omit the description herein, the top ends 11 in insertion section 13
On also set up processing utensil penetrating via opening (omitting diagram) sometimes in addition to object lens 19 and plano-concave lens 17, for removing
The front delivery nozzle of the delivery nozzle (omitting diagram) of moisture, the blood of the affected part for cleaning examinee etc., mucus etc. (saves
Sketch map shows).
In the top ends 11 of insertion section 13, a pair of plano-concave lens 17 are configured to make the illumination in viewing area with object lens 19
Optical axis L centered on uniformly.Specifically, 2 plano-concave lens 17 configure plane in the optical axis L with respect to object lens 19 into
For the symmetrical position of substantially minute surface.In addition, when the tip side viewing from insertion section 13,2 plano-concave lens 17 are arranged respectively at
From the plane of symmetry centered on object lens 19 in the range of 45 ° to 135 ° and in the range of -45 ° to -135 °.Thus, using compared with
Few illuminace component while the illumination in viewing area is distributed well, can also realize the thin footpath of insertion section 13.
As shown in Fig. 3 A to Fig. 3 C, 2 plano-concave lens 17 are assigned with its incline direction.Herein, Fig. 3 A are from insertion section
Front view during 13 tip side viewing, Fig. 3 B are the observation visual fields of object lens 19, and Fig. 3 C are represented with by incline direction and light guide therefor
The profilograph of the approximate centre of the outer surface of the plano-concave lens 17 for the section that 15 optical axis limits.
Specifically, in 2 plano-concave lens 17, when the optical axis direction viewing from object lens 19, outside plano-concave lens 17
The inclined direction of the approximate centre on surface is pair of the direction of arrow and the observation visual field of object lens 19 that Fig. 3 A and Fig. 3 C are represented
Angular direction is that the direction of arrow institute angle degree in Fig. 3 B is less than 30 °.
So, no matter viewing distance is still relatively near farther out, the illumination light from plano-concave lens 17 can be efficiently irradiated,
So that the illumination distribution in viewing area is good, so as to ensure good observation visual field.
The base end part of the illumination light incidence light guide therefor 15 projected from light supply apparatus (not shown), in light guide therefor 15 in progress
Surface is reflected, a pair of the plano-concave lens 17 being directed into the top ends 11 for being configured at insertion section 13.It is directed into a pair of plano-concaves
Light diffusion occurs in the presence of plano-concave lens 17 for the illumination light of lens 17, and to the direction of the optical axis L towards object lens 19
Reflect and be irradiated.Thus, the viewing area A of the optical axis direction of illumination objective lens 19.Now, due to the photograph of each plano-concave lens 17
Direction difference is penetrated, therefore by overlapping the light from these lens, can be illuminated well from top ends as shown in Figure 1
11 near regions, and the range of exposures of wide expansion can be obtained in the region remote from top ends 11 as shown in Figure 7.
Reflected light from viewing area A carries out optically focused by object lens 19, is imaged by photographing element (not shown).Afterwards, turn
Electric signal is changed to by image processing part real-time image processing, is shown as observing image on display part.
As comparative example, the viewing area A of conventional Microendoscopic illumination condition is illustrated using Figure 10.Such as Figure 10 institutes
Show, in conventional endoscope 10, because the illumination light edge direction parallel with the optical axis L of object lens 19 from plano-concave lens 18 is penetrated
Go out, therefore when the distance between the top ends of insertion section 14 and viewing area A are nearer, it is impossible to illumination observation region A well.
Further, since the direction of illumination of each plano-concave lens 18 is identical, therefore ought be as shown in Figure 10 between top ends and viewing area A
It is distant when, it is impossible to obtain range of exposures broadening effect.
First variation
Hereinafter, the first variation of the endoscope of present embodiment is illustrated.
In the endoscope that this variation omits swing mechanism, as shown in figure 4, being watched when from the optical axis direction of object lens 19
When, the incline direction of the approximate centre of the outer surface of plano-concave lens 17 is with passing through the center of object lens 19 and the center of plano-concave lens 17
Straight line institute angle degree is less than 30 °.In such manner, it is possible to efficiently irradiated from plano-concave to the direction of the optical axis L towards object lens 19
The illumination light of lens 17, so as to ensure good observation visual field.
Second variation
The second variation of the endoscope of swing mechanism is omitted as present embodiment, can also be as shown in Figure 5 A to FIG. 5 C
Change the curvature of the curved surface of plano-concave lens 17 like that.Herein, Fig. 5 A be from the front view during viewing of the top ends of insertion section 13,
Fig. 5 B are the longitudinal sections intercepted along the incline direction of the approximate centre of the outer surface of plano-concave lens 17, and Fig. 5 C are edge and plano-concave
The longitudinal section of the orthogonal direction interception of the incline direction of the approximate centre of the outer surface of lens 17.
Specifically, plano-concave lens 17 is formed as follows：Approximate centre in the outer surface of plano-concave lens 17, make in Fig. 5 B
The curvature of curved surface on incline direction shown is more than the curvature of curved surface on the direction orthogonal with incline direction shown in Fig. 5 C.
In such manner, it is possible to the illumination light from plano-concave lens 17 is significantly spread to the direction of the optical axis L towards object lens 19
And be irradiated, so as to efficiently in illumination observation region, therefore be able to ensure that good observation visual field.
3rd variation
The 3rd variation of the endoscope of swing mechanism is omitted as present embodiment, can also make to put down as shown in Figure 6
Concavees lens 17 have the convex portion 23 of circumferentially projection in inner surface side, are provided on insertion section 13 chimeric with convex portion 23 recessed
Portion 24 or stage portion 25.
In such manner, it is possible to plano-concave lens 17 is easily positioned relative to top ends 11 with easy structure.In addition, it is double-colored into
The bond strength of 2 kinds of resins can be improved in the case of shape.Thereby, it is possible to exclude the necessity of the setting pawl on insertion section 13,
The top of insertion section 13 can be reduced, so as to improve in body cavity, the pluggability of device interior etc..
4th variation
The 4th variation of the endoscope of swing mechanism is omitted as present embodiment, light can also be made as shown in Figure 8
The end face of guiding element 15 tilts to the opposite direction of the incline direction of the outgoing plane with plano-concave lens 17.
In such manner, it is possible to penetrated using the refraction action of the end face of the light guide therefor 15 of advance inclined in opposite directions to direction is offset
Go out illumination light, so as to improve the luminous intensity distribution performance reduced due to the refraction of the inclined plane of plano-concave lens 17.
5th variation
The 5th variation of the endoscope of swing mechanism is omitted as present embodiment, can also be as shown in Figure 9 flat
The concave side configuration light diffusingsurface (Grains) of concavees lens 17.
In such manner, it is possible to using light diffusingsurface light diffusion effect to offset direction project illumination light, so as to improve by
In the luminous intensity distribution performance that the refraction of the inclined plane of plano-concave lens 17 reduces.
More than, embodiments of the present invention are explained in detail with reference to the accompanying drawings, but the specific structure of the present invention is not limited only to
The embodiment, also comprising design alteration without departing from the scope of spirit of the present invention etc..
Presently preferred embodiments of the present invention is these are only, is not intended to limit the invention, it is all in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (7)
- A kind of 1. endoscope, it is characterised in that including：The insertion section of tubulose, it has top ends, along its length provided with two light guide cavitys；Light conducting member, including the first light conducting member and the second light conducting member, it is respectively accommodated in two light guide cavitys, And it is used for towards the top ends guiding illumination light；Swing mechanism, it is arranged between each light conductor cavity and the light conducting member therein, controls the guide-lighting structure Part does circumferential movement and swing along the light conductor cavity；First lamp optical system, it is arranged at the end side of first light conducting member, and for making from described first Light diffusion occurs for the first illumination light that light conducting member projects, and makes the optical axis of first illumination light towards described to object light The direction of the optical axis of system reflects and is irradiated；Second lamp optical system, it is arranged at the end side of second light conducting member, and for making from described second Light diffusion occurs for the second illumination light that light conducting member projects, and makes the optical axis of second illumination light towards described to object light The direction of the optical axis of system and the optical axis of first illumination light reflects and is irradiated；AndThe insertion section of tubulose, it has top ends；First lamp optical system and second lamp optical system are configured at the top ends of the insertion section simultaneously And be configured at and turn into the substantially symmetrical position of minute surface with respect to the plane of the optical axis to object optical system,The shoulder of the top ends and first lamp optical system positioned at the shoulder and second lamp optical system Outer surface by be close to top and it is convergent in a manner of tilt,When being watched from the optical axis direction to object optical system, first lamp optical system and second illumination light The inclined direction of the approximate centre of the outer surface of system is with passing through the center to object optical system, described the The straight line institute angle degree at the center of one lamp optical system and second lamp optical system is less than 30 °.
- 2. a kind of endoscope according to claim 1, it is characterised in that what the swing mechanism was parallel to each other including three First sliding groove, inwall of three first sliding grooves along the light guide therefor cavity are set, and each first sliding groove It is vertical with the length direction of the light guide therefor cavity, the axis on the light conducting member is provided between first sliding groove Symmetrical at least 2 group of second sliding groove, the light guide therefor and is provided with two connections between first sliding groove of centre Bar, and axisymmetrical of the connecting rod on the light guide therefor, the connecting rod can be slided along positioned at described the first of centre Groove and each second sliding groove slide.
- 3. a kind of endoscope according to claim 2, it is characterised in that before the middle part of any connecting rod is provided with one Expansion link, length direction of the front stretching bar along the light guide therefor extend and are movably connected close to described the of front end On two sliding grooves, the middle part of another connecting rod is provided with a rear telescopic rod, length of the rear telescopic rod along the light guide therefor Degree direction extend and is movably connected on second sliding groove of close rear end, and the front stretching bar, it is described after stretch Contracting bar and the light guide therefor are coplanar.
- 4. a kind of endoscope according to claim 1, it is characterised in that first lamp optical system and described Two lamp optical systems be outer surface be plane and inner surface be curved surface plano-concave lens, in first lamp optical system And the approximate centre of the outer surface of second lamp optical system, first lamp optical system and second illumination Curvature of the curved surface of optical system on the inclined direction is more than the curved surface orthogonal with the inclined direction Curvature on direction.
- 5. a kind of endoscope according to claim 1, it is characterised in that first lamp optical system, described second Lamp optical system and at least top ends of the insertion section by using opaque resin and transparent resin it is double-colored into Shape and it is integrally formed.
- 6. a kind of endoscope according to claim 1, it is characterised in that when from the optical axis direction to object optical system During viewing, the described of the approximate centre of the outer surface of first lamp optical system and second lamp optical system inclines The diagonally opposed institute angle degree of oblique direction and the observation visual field to object optical system is less than 30 °.
- 7. a kind of endoscope according to claim 1, it is characterised in that first lamp optical system and described second Lamp optical system has the convex portion of circumferentially projection in inner surface side, and the insertion section has for chimeric with the convex portion Recess or stage portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710857652.0A CN107569205B (en) | 2017-09-21 | 2017-09-21 | A kind of endoscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710857652.0A CN107569205B (en) | 2017-09-21 | 2017-09-21 | A kind of endoscope |
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| Publication Number | Publication Date |
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| CN107569205A true CN107569205A (en) | 2018-01-12 |
| CN107569205B CN107569205B (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710857652.0A Active CN107569205B (en) | 2017-09-21 | 2017-09-21 | A kind of endoscope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020094109A1 (en) * | 2018-11-09 | 2020-05-14 | 苏州新光维医疗科技有限公司 | Disposable ureter pyeloscope having multi-angle adjustment structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316783A (en) * | 2009-03-31 | 2012-01-11 | 奥林巴斯医疗株式会社 | Endoscope |
| CN105682530A (en) * | 2014-01-09 | 2016-06-15 | 奥林巴斯株式会社 | Endoscope system |
| US20160377856A1 (en) * | 2013-12-25 | 2016-12-29 | Olympus Corporation | Optical scanning observation apparatus |
-
2017
- 2017-09-21 CN CN201710857652.0A patent/CN107569205B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316783A (en) * | 2009-03-31 | 2012-01-11 | 奥林巴斯医疗株式会社 | Endoscope |
| US20160377856A1 (en) * | 2013-12-25 | 2016-12-29 | Olympus Corporation | Optical scanning observation apparatus |
| CN105682530A (en) * | 2014-01-09 | 2016-06-15 | 奥林巴斯株式会社 | Endoscope system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020094109A1 (en) * | 2018-11-09 | 2020-05-14 | 苏州新光维医疗科技有限公司 | Disposable ureter pyeloscope having multi-angle adjustment structure |
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| Publication number | Publication date |
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| CN107569205B (en) | 2019-08-16 |
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