CN106443973A - Endoscopic head - Google Patents
Endoscopic head Download PDFInfo
- Publication number
- CN106443973A CN106443973A CN201611109878.4A CN201611109878A CN106443973A CN 106443973 A CN106443973 A CN 106443973A CN 201611109878 A CN201611109878 A CN 201611109878A CN 106443973 A CN106443973 A CN 106443973A
- Authority
- CN
- China
- Prior art keywords
- lens
- hole
- endoscope
- lens barrel
- barrel
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Astronomy & Astrophysics (AREA)
- Endoscopes (AREA)
Abstract
The invention discloses an endoscopic head, comprising a barrel, an aperture plate, a lens and a head seat; the barrel is hollow, one end of the barrel is provided with a first through hole, both the aperture plate and the lens are positioned in the barrel such that the first through hole, the aperture plate and the lens are arranged in sequence, the aperture plate is provided with a second through hole, and the axis of the second through hole and a main optical axis of the lens are superposed. In the invention, both the aperture plate and the lens are positioned in the barrel, the aperture plate is provided with the second through hole, the aperture plate and the barrel form a small aperture imaging lens, small aperture imaging is achieved based on small aperture imaging principle when light passes through the second through hole, and good depth of field can be acquired; when light passes through the second through hole into the lens, the original propagating direction of the light is changed under the diffracting action of the lens, the scattering angle of the light is decreased, and the imaging visual angle range of the endoscopic head is enlarged; the endoscopic head is simple in structure, and the problem that a traditional endoscopic head is complex in structure and poor in depth of field can be solved.
Description
Technical field
The present invention relates to medical instruments field, more particularly, to a kind of endoscope lens.
Background technology
Endoscopic imaging system includes common medical endoscope system and technoscope system.Endoscope is using
When federation run into the not good problem of the depth of field, even if instrument focusing is accurately, the position that can see also is limited only to focal point,
And be then difficult to before and after focus it is clear that simultaneously as endoscope needs often to move when using, the not good problem of the depth of field is just more
Prominent.
But medical endoscope often has extra high requirement in practical clinical to the depth of field, traditional endoscope
The optical glass composition of more than five is adopted, the depth of field is not good as first, and complex structure, development cost height.So needing one badly
Plant the simple endoscope lens of structure to increase the Depth of field of endoscope.
Content of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of endoscope lens, due to hole piece and
Lens are respectively positioned in lens barrel, and hole piece is provided with the second through hole, and a diameter of 200um of the second through hole, hole piece and lens barrel constitute
Pinhole imaging system camera lens, based on pinhole imaging system principle, achieves pinhole imaging system when light is by the second through hole, can obtain good
The depth of field, after light passes through the second through hole to enter lens, due to the refraction action of lens, light changes original propagation side
To so that the dispersion angle of light diminishes, thus increasing the imaged viewing angle scope adding endoscope lens, and endoscope lens
Structure is simple, can solve the problems, such as traditional endoscope lens complex structure and the depth of field is not good.
The purpose of the present invention employs the following technical solutions realization：
A kind of endoscope lens, including lens barrel, hole piece, lens and objective carrier, lens barrel is in hollow structure, and lens barrel one end is provided with
First through hole, hole piece and lens are respectively positioned in lens barrel so that first through hole, hole piece and lens are arranged in order distribution, and hole piece is provided with
Second through hole, the centrage of the second through hole and the primary optical axis of lens overlap, and the lens barrel other end is threadeded with objective carrier.
Preferably, the primary optical axis of the centrage of first through hole, the centrage of the second through hole and lens overlaps.
Preferably, the distance of hole piece and lens is less than the focal length of described lens.
Preferably, the diameter of the second through hole is less than the diameter of first through hole.
Preferably, a diameter of 200um of the second through hole.
Preferably, lens barrel other end lateral wall is provided with external screw thread, and objective carrier is provided with the female thread cooperating with external screw thread,
Rotate described lens barrel, promote external screw thread to contact with each other with female thread, so that the lens barrel other end is threadeded with objective carrier.
Preferably, first through hole and described second through hole are circular port.
Preferably, lens barrel is aluminium material lens barrel, and described objective carrier is aluminium material objective carrier.
Preferably, lens barrel outer surface is in black matte shape, and objective carrier outer surface is in black matte shape.
Preferably, lens are spherical lenss.
Compared to existing technology, the beneficial effects of the present invention is：Lens barrel is threaded togather with objective carrier, due to hole
Piece and lens are respectively positioned in lens barrel, and lens barrel one end is provided with first through hole so that described first through hole, hole piece and lens are arranged in order
Distribution, and hole piece is provided with the second through hole, after extraneous light sequentially passes through first through hole and the second through hole enters lens,
Due to the refraction action of lens, light changes the original direction of propagation so that the dispersion angle of light diminishes, thus increasing
Plus the imaged viewing angle scope of endoscope lens, because hole piece and lens barrel constitute pinhole imaging system camera lens, based on pinhole imaging system principle,
Achieve pinhole imaging system when light is by the second through hole, the good depth of field can be obtained, and endoscope header structure is simple, energy
Solve the problems, such as traditional endoscope lens complex structure and the depth of field is not good.
Brief description
Fig. 1 is a kind of combining structure schematic diagram of embodiment of endoscope lens of the present invention.
Fig. 2 is the cross section structure diagram in A-A direction shown in Fig. 1.
Fig. 3 is the decomposition texture schematic diagram of endoscope lens shown in Fig. 1.
Fig. 4 is the structural representation of Fig. 3 shown pores piece.
In figure：1st, lens barrel；11st, first through hole；2nd, hole piece；21st, the second through hole；3rd, lens；4th, objective carrier.
Specific embodiment
Below, in conjunction with accompanying drawing and specific embodiment, the present invention is described further：
Refer to Fig. 1～Fig. 4, the present invention relates to a kind of endoscope lens, including lens barrel 1, hole piece 2, lens 3 and objective carrier
4.
Lens barrel 1 is in hollow structure, and lens barrel 1 one end forms first through hole 11, and first through hole 11 is circular port, and lens barrel 1 is another
One end forms opening, hole piece 2 and lens 3 is positioned in lens barrel 1 successively at opening so that hole piece 2 side is close to
Barrel near one through hole 11, hole piece 2 opposite side is tightly sticked together with lens 3 (lens 3 are spherical lenss 3).I.e. hole piece 2 He
Lens 3 are respectively positioned in lens barrel 1 so that described first through hole 11, hole piece 2 and lens 3 are arranged in order distribution.
In present embodiment, first through hole 11 is circular port.In other embodiments, first through hole 11 can be square
Hole or irregular shape hole.
Second through hole 21 is formed on hole piece 2, the second through hole 21 is circular port, the diameter of the second through hole 21 is less than first and leads to
The diameter in hole 11, a diameter of 200um of the wherein second through hole 21, when extraneous light pass through first through hole 11 and reach second lead to
During hole 21, light collection and passes through described second through hole 21 in the second through hole 21.Due to first through hole 11 centrage, second
The primary optical axis of the centrage of through hole 21 and lens 3 overlaps, and leads to when extraneous light sequentially passes through first through hole 11 and second
So that the light in the external world preferably enters lens 3 and then reflected, after running through lens 3, after lens 3 when hole 21
Fang Jinhang is imaged.
In present embodiment, the second through hole 21 is circular port.In other embodiments, the second through hole 21 can be square
Hole or irregular shape hole, as long as the light in the external world can pass through the second through hole 21.
In present embodiment, lens 3 are spherical lenss 3.In other embodiments, lens 3 can be non-spherical lens
3, as long as the light in the external world sequentially passes through first through hole 11 and the second through hole 21, can guarantee that the light in the external world enters lens
Then 3 carry out reflecting.
In present embodiment, a diameter of 200um of the second through hole 21.In other embodiments, the second through hole 21 is straight
Footpath can be 195um, 196um, 197um, 198um, 199um, 201um, 202um, 203um, 204um or 205um etc., as long as the
The diameter of two through holes 21 falls in the range of 100～500um.
When extraneous light sequentially passes through first through hole 11 and the second through hole 21, light enters lens 3 and then enters
Row refraction, because the distance of hole piece 2 and lens 3 is less than the focal length of lens 3 itself so that lens 3 will not obtain to the second through hole 21
The light collection imaging obtaining, extraneous light, after running through lens 3, is imaged at lens 3 rear.Due to not having lens 3 to become
The link of picture, efficiently avoid the depth of field brought due to employing multiple lens 3 imaging in conventional endoscope camera lens and shows not
Good problem.
Wherein lens barrel 1 is aluminium material lens barrel 1, and objective carrier 4 is by aluminium material objective carrier 4 so that the endoscope lens being formed
Quality is less, is easy to carry, and lens barrel 1 outer surface is in black matte shape, and objective carrier 4 outer surface is in black matte shape, it is to avoid
The light that lens barrel 1 is reflected enters the second through hole 21, causes imaging interference.
Lens barrel 1 other end lateral wall forms external screw thread, and objective carrier 4 is formed with the interior spiral shell being cooperated with external screw thread
Stricture of vagina, rotates lens barrel 1, promotes described external screw thread and female thread to contact with each other, so that lens barrel 1 other end and objective carrier 4 screw thread
Connecting, hole piece 2 and lens 3 being fixed on inside lens barrel 1, thus forming complete endoscope lens.
During using the present invention, lens barrel 1 is threaded togather with objective carrier 4, because hole piece 2 and lens 3 are respectively positioned on mirror
In cylinder 1, lens barrel 1 one end forms first through hole 11 so that described first through hole 11, hole piece 2 and lens 3 are arranged in order distribution,
And the second through hole 21 is formed on hole piece 2, the master of the centrage of first through hole 11, the centrage of the second through hole 21 and lens 3
Optical axis overlaps, after extraneous light sequentially passes through first through hole 11 and the second through hole 21 enters lens 3, due to lens 3
Refraction action, light changes the original direction of propagation so that the dispersion angle of light diminishes, and light is after running through lens 3
It is imaged at lens 3 rear, thus increasing the imaged viewing angle scope adding endoscope lens, because hole piece 2 and lens barrel 1 are constituted
Pinhole imaging system camera lens, based on pinhole imaging system principle, achieves pinhole imaging system when light is by the second through hole 21, can obtain good
The good depth of field, and endoscope header structure is simple, can solve traditional endoscope lens complex structure and the depth of field is not good
Problem.
It will be apparent to those skilled in the art that can technical scheme as described above and design, make other various
Corresponding change and deformation, and all these change and deformation all should belong to the protection domain of the claims in the present invention
Within.
Claims (10)
1. a kind of endoscope lens it is characterised in that：Including lens barrel, hole piece, lens and objective carrier,
Described lens barrel is in hollow structure, and described lens barrel one end is provided with first through hole, and described hole piece and lens are respectively positioned on described lens barrel
Interior so that described first through hole, hole piece and lens are arranged in order distribution,
Described hole piece is provided with the second through hole, and the described centrage of the second through hole and the primary optical axis of lens overlap,
The described lens barrel other end is threadeded with objective carrier.
2. endoscope lens according to claim 1 it is characterised in that：The centrage of described first through hole, the second through hole
Centrage and the primary optical axis of lens overlap.
3. endoscope lens according to claim 2 it is characterised in that：The distance of described hole piece and lens is less than described
The focal length of mirror.
4. endoscope lens according to claim 1 it is characterised in that：The diameter of described second through hole is less than first through hole
Diameter.
5. endoscope lens according to claim 4 it is characterised in that：A diameter of 200um of described second through hole.
6. endoscope lens according to claim 1 it is characterised in that：Described lens barrel other end lateral wall is provided with outer spiral shell
Stricture of vagina, described objective carrier is provided with the female thread cooperating with external screw thread,
Rotate described lens barrel, promote described external screw thread and female thread to contact with each other, so that the described lens barrel other end and camera lens
Seat is threaded.
7. endoscope lens according to claim 1 it is characterised in that：Described first through hole and described second through hole are
Circular port.
8. endoscope lens according to claim 1 it is characterised in that：Described lens barrel is aluminium material lens barrel, described camera lens
Seat is aluminium material objective carrier.
9. endoscope lens according to claim 1 it is characterised in that：Described lens barrel outer surface is in black matte shape, institute
Stating objective carrier outer surface is in black matte shape.
10. endoscope lens according to claim 1 it is characterised in that：Described lens are spherical lenss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611109878.4A CN106443973A (en) | 2016-12-06 | 2016-12-06 | Endoscopic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611109878.4A CN106443973A (en) | 2016-12-06 | 2016-12-06 | Endoscopic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106443973A true CN106443973A (en) | 2017-02-22 |
Family
ID=58216000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611109878.4A Pending CN106443973A (en) | 2016-12-06 | 2016-12-06 | Endoscopic head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106443973A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1473545A (en) * | 2002-08-05 | 2004-02-11 | 王卫东 | Medical radio capsule |
| CN201609349U (en) * | 2010-01-26 | 2010-10-20 | 凤凰光学(上海)有限公司 | Ultra-micro water-proof medical endoscope lens mechanism |
| CN203720434U (en) * | 2013-12-03 | 2014-07-16 | 东莞光阵显示器制品有限公司 | Waterproof and dustproof lens structure used for industrial endoscopic camera module |
| WO2016112864A1 (en) * | 2015-01-16 | 2016-07-21 | 宁波舜宇光电信息有限公司 | Optical imaging apparatus built by using pinhole imaging principle, manufacturing method therefor and applications thereof |
| JP6008266B2 (en) * | 2016-02-10 | 2016-10-19 | パナソニックＩｐマネジメント株式会社 | Endoscope camera |
| CN206178235U (en) * | 2016-12-06 | 2017-05-17 | 广州瑞达医疗器械有限公司 | Endoscope camera lens |
-
2016
- 2016-12-06 CN CN201611109878.4A patent/CN106443973A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1473545A (en) * | 2002-08-05 | 2004-02-11 | 王卫东 | Medical radio capsule |
| CN201609349U (en) * | 2010-01-26 | 2010-10-20 | 凤凰光学(上海)有限公司 | Ultra-micro water-proof medical endoscope lens mechanism |
| CN203720434U (en) * | 2013-12-03 | 2014-07-16 | 东莞光阵显示器制品有限公司 | Waterproof and dustproof lens structure used for industrial endoscopic camera module |
| WO2016112864A1 (en) * | 2015-01-16 | 2016-07-21 | 宁波舜宇光电信息有限公司 | Optical imaging apparatus built by using pinhole imaging principle, manufacturing method therefor and applications thereof |
| JP6008266B2 (en) * | 2016-02-10 | 2016-10-19 | パナソニックＩｐマネジメント株式会社 | Endoscope camera |
| CN206178235U (en) * | 2016-12-06 | 2017-05-17 | 广州瑞达医疗器械有限公司 | Endoscope camera lens |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |