CN206178235U - Endoscope camera lens - Google Patents
Endoscope camera lens Download PDFInfo
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- CN206178235U CN206178235U CN201621328130.9U CN201621328130U CN206178235U CN 206178235 U CN206178235 U CN 206178235U CN 201621328130 U CN201621328130 U CN 201621328130U CN 206178235 U CN206178235 U CN 206178235U
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- lens
- hole
- endoscope
- piece
- lens barrel
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Abstract
The utility model discloses an endoscope camera lens, including lens cone, hole piece, lens and lens mount, the lens cone is hollow structure, and lens cone one end is equipped with first through -hole, and hole piece and lens all are located the lens cone for the distribution is arranged in proper order to first through -hole, hole piece and lens, and the hole piece is equipped with the second through -hole, and the central line of second through -hole and the primary optic axis of lens coincide each other. In the carrier roller device, because hole piece and lens all are located the lens cone, the hole piece is equipped with the second through -hole, hole piece and lens cone have constituted the small hole imaging camera lens, based on the small hole imaging principle, , has realized light small hole imaging when passing through the second through -hole, can obtain the good depth of field, after light passes second through -hole entering lens, because the refraction effect of lens, light has changed original direction of propagation, make the angle of dispersing of light diminish, thereby the formation of image visual angle range who adds endoscope camera lens has been increased, and endoscope camera lens simple structure, can solve traditional endoscope camera lens structure complicacy and not good problem of the depth of field.
Description
Technical field
The utility model is related 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 being used
When always run into the not good problem of the depth of field, even if instrument focusing is accurate, the position to be seen also is limited only to focal point,
And be then difficult before and after focus it is clear that simultaneously as endoscope needs frequent movement when in use, the not good problem of the depth of field is just more
It is prominent.
But medical endoscope often has extra high requirement, traditional endoscope in practical clinical to the depth of field
Optical mirror slip as first using more than five is constituted, and the depth of field is not good, and complex structure, and development cost is high.So needing one badly
The endoscope lens of simple structure are planted to increase the Depth of field of endoscope.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is 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 the second through hole a diameter of 200um, hole piece and lens barrel structure
Into pinhole imaging system camera lens, based on pinhole imaging system principle, pinhole imaging system is realized when light is by the second through hole, can obtained good
The good depth of field, after light enters lens through the second through hole, due to the refraction action of lens, light changes original propagation
Direction so that the dispersion angle of light diminishes, the imaged viewing angle scope of endoscope lens, and endoscope are added so as to increase
Header 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 this utility model is realized using following technical scheme：
A kind of endoscope lens, including lens barrel, hole piece, lens and lens mount, lens barrel are 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 center line of the second through hole and the primary optical axis of lens overlap, and the lens barrel other end is threadedly coupled with lens mount.
Preferably, the primary optical axis of the center line of first through hole, the center line of the second through hole and lens overlaps.
Preferably, focal length of the distance of hole piece and lens less than the lens.
Preferably, diameter of the diameter of the second through hole less than 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 lens mount is provided with the internal thread cooperated with external screw thread,
The lens barrel is rotated, promotes external screw thread to be contacted with each other with internal thread, so that the lens barrel other end is threadedly coupled with lens mount.
Preferably, first through hole and second through hole are circular port.
Preferably, lens barrel is aluminium material lens barrel, and the lens mount is aluminium material lens mount.
Preferably, lens barrel outer surface is in black matte shape, and lens mount outer surface is in black matte shape.
Preferably, lens are spherical lens.
Compared to existing technology, the beneficial effects of the utility model are：Lens barrel is threaded togather with lens mount, by
It is respectively positioned in lens barrel in hole piece and lens, lens barrel one end is provided with first through hole so that the first through hole, hole piece and lens are successively
Arranged distribution, and hole piece is provided with the second through hole, when extraneous light sequentially passes through first through hole and the second through hole into thoroughly
After mirror, due to the refraction action of lens, light changes the original direction of propagation so that the dispersion angle of light diminishes, so that
Increase plus endoscope lens imaged viewing angle scope, because hole piece and lens barrel constitute pinhole imaging system camera lens, based on aperture into
As principle, pinhole imaging system is realized when light is by the second through hole, the good depth of field, and endoscope header structure can be obtained
Simply, traditional endoscope lens complex structure can be solved the problems, such as and the depth of field is not good.
Brief description of the drawings
Fig. 1 is a kind of combining structure schematic diagram of implementation method of the utility model endoscope lens.
Fig. 2 is the cross section structure diagram in A-A directions 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 pieces.
In figure：1st, lens barrel；11st, first through hole；2nd, hole piece；21st, the second through hole；3rd, lens；4th, lens mount.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, the utility model is described further：
Fig. 1~Fig. 4 is referred to, the utility model is related to a kind of endoscope lens, including lens barrel 1, hole piece 2, lens 3 and mirror
Headstock 4.
Lens barrel 1 is in hollow structure, and the one end of lens barrel 1 forms first through hole 11, and first through hole 11 is circular port, and lens barrel 1 is another
One end forms opening, and hole piece 2 and lens 3 are positioned in lens barrel 1 from opening successively so that be close in the side of hole piece 2
Barrel near one through hole 11, the opposite side of hole piece 2 is tightly sticked together with lens 3 (lens 3 are spherical lens 3).That is the He of hole piece 2
Lens 3 are respectively positioned in lens barrel 1 so that the 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.
The second through hole 21 is formed on hole piece 2, the second through hole 21 is circular port, and the diameter of the second through hole 21 leads to less than first
The diameter in hole 11, wherein a diameter of 200um of the second through hole 21, when extraneous light is through first through hole 11 and arrival second is logical
During hole 21, light collection in the second through hole 21 and pass through second through hole 21.Due to center line, second of first through hole 11
The center line of through hole 21 and the primary optical axis of lens 3 overlap, and lead to when extraneous light sequentially passes through first through hole 11 and second
When hole 21 so that extraneous light preferably into lens 3 and then is reflected, after lens 3, after lens 3
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 lens 3.In other embodiments, lens 3 can be non-spherical lens
3, as long as the light in the external world sequentially passes through 11 and second through hole 21 of first through hole, can guarantee that the light in the external world enters lens
Then 3 reflected.
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 for 195um, 196um, 197um, 198um, 199um, 201um, 202um, 203um, 204um or 205um etc., if the
The diameter of two through holes 21 falls in the range of 100~500um.
When extraneous light sequentially passes through 11 and second through hole 21 of first through hole, light is into lens 3 and then enters
Row refraction, because the distance of hole piece 2 and lens 3 is less than the focal length of itself of lens 3 so that lens 3 will not be obtained to the second through hole 21
The light collection imaging for obtaining, extraneous light is imaged after lens 3 at the rear of lens 3.Due to no 3 one-tenth of lens
The link of picture, efficiently avoid the depth of field come as a result of the imaging belt of multiple lens 3 in conventional endoscope camera lens and shows not
Good problem.
Wherein lens barrel 1 is aluminium material lens barrel 1, and lens mount 4 is aluminium material lens mount 4 so that the endoscope lens for being formed
Quality is smaller, is easy to carry, and the outer surface of lens barrel 1 is in black matte shape, and the outer surface of lens mount 4 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 to disturb.
The other end lateral wall of lens barrel 1 forms external screw thread, and the interior spiral shell cooperated with external screw thread is formed with lens mount 4
Line, rotates lens barrel 1, promotes the external screw thread to be contacted with each other with internal thread, so that the other end of lens barrel 1 and the screw thread of lens mount 4
Connection, hole piece 2 and lens 3 is fixed on inside lens barrel 1, so as to form a complete endoscope lens.
During using the utility model, lens barrel 1 is threaded togather with lens mount 4, due to hole piece 2 and the equal position of lens 3
In in lens barrel 1, the one end of lens barrel 1 forms first through hole 11 so that the first through hole 11, hole piece 2 and lens 3 are arranged in order point
The second through hole 21 is formed on cloth, and hole piece 2, the center line of first through hole 11, the center line of the second through hole 21 and lens 3
Primary optical axis overlaps, after extraneous light sequentially passes through 11 and second through hole of first 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 lens 3
It is imaged at the rear of lens 3, the imaged viewing angle scope of endoscope lens is added so as to increase, because hole piece 2 and lens barrel 1 are constituted
Pinhole imaging system camera lens, based on pinhole imaging system principle, pinhole imaging system is realized when light is by the second through hole 21, can be obtained good
The good depth of field, and endoscope lens simple structure, 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 technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of the utility model claim
Within the scope of.
Claims (10)
1. a kind of endoscope lens, it is characterised in that：Including lens barrel, hole piece, lens and lens mount,
The lens barrel is in hollow structure, and described lens barrel one end is provided with first through hole, and the hole piece and lens are respectively positioned on the lens barrel
It is interior so that the first through hole, hole piece and lens are arranged in order distribution,
The hole piece is provided with the second through hole, and the center line of second through hole and the primary optical axis of lens overlap,
The lens barrel other end is threadedly coupled with lens mount.
2. endoscope lens according to claim 1, it is characterised in that：The center line of the first through hole, the second through hole
Center line and the primary optical axis of lens overlap.
3. endoscope lens according to claim 2, it is characterised in that：The distance of the 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 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 second through hole.
6. endoscope lens according to claim 1, it is characterised in that：The lens barrel other end lateral wall is provided with outer spiral shell
Line, the lens mount is provided with the internal thread cooperated with external screw thread,
The lens barrel is rotated, promotes the external screw thread to be contacted with each other with internal thread, so that the lens barrel other end and camera lens
Seat threaded connection.
7. endoscope lens according to claim 1, it is characterised in that：The first through hole and second through hole are
Circular port.
8. endoscope lens according to claim 1, it is characterised in that：The lens barrel is aluminium material lens barrel, the camera lens
Seat is aluminium material lens mount.
9. endoscope lens according to claim 1, it is characterised in that：The lens barrel outer surface is in black matte shape, institute
Lens mount outer surface is stated in black matte shape.
10. endoscope lens according to claim 1, it is characterised in that：The lens are spherical lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621328130.9U CN206178235U (en) | 2016-12-06 | 2016-12-06 | Endoscope camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621328130.9U CN206178235U (en) | 2016-12-06 | 2016-12-06 | Endoscope camera lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206178235U true CN206178235U (en) | 2017-05-17 |
Family
ID=60241839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621328130.9U Active CN206178235U (en) | 2016-12-06 | 2016-12-06 | Endoscope camera lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206178235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443973A (en) * | 2016-12-06 | 2017-02-22 | 广州瑞达医疗器械有限公司 | Endoscopic head |
-
2016
- 2016-12-06 CN CN201621328130.9U patent/CN206178235U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443973A (en) * | 2016-12-06 | 2017-02-22 | 广州瑞达医疗器械有限公司 | Endoscopic head |
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