CN207352254U - Lens focusing device and the endoscope camera head with the lens focusing device - Google Patents
Lens focusing device and the endoscope camera head with the lens focusing device Download PDFInfo
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- CN207352254U CN207352254U CN201721273113.4U CN201721273113U CN207352254U CN 207352254 U CN207352254 U CN 207352254U CN 201721273113 U CN201721273113 U CN 201721273113U CN 207352254 U CN207352254 U CN 207352254U
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- lens
- magnetic part
- focusing device
- lens assembly
- axis direction
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Abstract
The utility model discloses a kind of lens focusing device and the endoscope camera head with the lens focusing device, lens focusing device include：Lens mount；Lens assembly, lens assembly are placed in the lens mount, and can be moved along the optical axis direction of lens assembly；And lens driving apparatus, lens driving apparatus are used to drive the lens assembly to move along the optical axis direction of lens assembly；The lens driving apparatus includes：Driven magnetic part, driven magnetic part are placed in the lens mount, and are connected with the lens assembly；With active magnetic part, active magnetic part be installed on outside the lens mount with the corresponding position of driven magnetic part, and can be moved along the optical axis direction of the lens assembly to drive driven magnetic part to move.Original dynamic sealing is changed to complete static seal by the lens focusing device, greatly improves the reliability of sealing so that lens focusing device can be used for high temperature, hyperbaric environment, enhances product reliability, extends product service life.
Description
Technical field
Optical element technology field is the utility model is related to, more particularly to a kind of lens focusing device and there is the camera lens
The endoscope camera head of focus control.
Background technology
Existing lens focusing device mainly adjusts lens focus using mechanical drive mode, and this structure is ripe, reliably
Property it is high, but its application scenario is subject to a definite limitation.The adjustment structure of mechanical drive mode can be special at some there are connection gap
In application environment (such as medical instruments field), prevent although IPX8 can be reached after sealing structure is carried out to lens focusing device
Water-stop requires, but can not be resistant to high temperature and pressure cleaning-sterilizing, in other words its lens focusing device under high temperature and high pressure environment
Seal failure, so as to limit its application field.
The content of the invention
For above-mentioned state of the art, the utility model offer is a kind of can be in the camera lens tune that high temperature, hyperbaric environment use
Coke installation, to strengthen product reliability, extends product service life.In addition, the utility model, which also provides one kind, has the camera lens
The endoscope camera head of focus control, to strengthen product reliability, extends product service life.
In order to solve the above-mentioned technical problem, a kind of lens focusing device provided by the utility model, including：Lens mount；
Lens assembly, lens assembly are placed in the lens mount, and can be moved along the optical axis direction of lens assembly；And lens driving
Device, lens driving apparatus are used to drive the lens assembly to move along the optical axis direction of lens assembly；The lens driving dress
Put including：Driven magnetic part, driven magnetic part are placed in the lens mount, and are connected with the lens assembly；And active magnetic
Property part, active magnetic part be installed on outside the lens mount with the corresponding position of driven magnetic part, and can be along institute
The optical axis direction movement of lens assembly is stated to drive driven magnetic part to move.
In one of the embodiments, the driven magnetic part and the active magnetic part are ring-type, the driven magnetic
Property part is fixedly set on the lens assembly, and the active magnetic part movable set is on the lens mount.
In one of the embodiments, along the optical axis direction of the lens assembly, the width of the driven magnetic part and institute
The width for stating active magnetic part is unequal.
In one of the embodiments, it is more than along the optical axis direction of the lens assembly, the width of the driven magnetic part
The width of the active magnetic part.
In one of the embodiments, cricoid boss, and the camera lens are provided with the outer circumferential surface of the lens assembly
One end of component has been connected through a screw thread locking nut, the driven magnetic part be located at the boss and the locking nut it
Between.
In one of the embodiments, the lens driving apparatus further includes knob, and the knob is rotatably mounted around
On the lens mount, and the knob is connected by transmission mechanism with the active magnetic part, for driving active magnetic part edge
The optical axis direction movement of the lens assembly.
In one of the embodiments, the transmission mechanism includes the helicla flute being arranged on the knob internal face and sets
Put pin that is on the active magnetic part and being slided along helicla flute.
In one of the embodiments, the lens mount is the tubular structure with light inlet and light-emitting window, it is described enter
Sealed set has eyeglass at optical port, and sealed set has imaging sensor at the light-emitting window.
In one of the embodiments, sealed between the eyeglass and the lens mount by glue or sealing ring, it is described
Sealed between imaging sensor and the lens mount by sealing ring.
A kind of endoscope camera head provided by the utility model, including the lens focusing device.
Lens focusing device provided by the utility model, lens driving apparatus include driven magnetic part and active magnetic part,
And be connected with the lens assembly, driven magnetic part is placed in lens mount, and active magnetic part is installed on outside lens mount, actively
Magnetic part is acted on by magnetic couple drives driven magnetic part to be moved along the optical axis direction of lens assembly, so as to drive lens assembly
Moved along the optical axis direction of lens assembly.Original dynamic sealing is changed to complete static seal by the lens focusing device, makes sealing
Reliability greatly improves so that lens focusing device can be used for high temperature, hyperbaric environment, enhances product reliability, extends production
Product service life.
Beneficial effect possessed by the utility model additional technical feature will this specification specific embodiment part into
Row explanation.
Brief description of the drawings
Fig. 1 is the schematic cross-sectional view of the lens focusing device of the utility model in one embodiment.
Description of reference numerals：1st, knob；1a, helicla flute；2nd, pin；3rd, active magnetic part；4th, driven magnetic part；5th, camera lens
Component；5a, boss；6th, imaging sensor；7th, eyeglass；8th, lens mount；8a, light inlet；8b, light-emitting window；9th, locking nut；10、
Sealing ring.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments the utility model is described in detail.It should be noted that do not rushing
In the case of prominent, the feature in following embodiment and embodiment can be mutually combined.
Fig. 1 is the schematic cross-sectional view of the lens focusing device of the utility model in one embodiment.Such as Fig. 1 institutes
Show, the lens focusing device in the utility model embodiment includes：Lens mount 8, lens assembly 5 and lens driving apparatus, its
In, lens mount 8 is the tubular structure with light inlet 8a and light-emitting window 8b, and sealed set has at the light inlet 8a of lens mount 8
Eyeglass 7, sealed set has imaging sensor 6 at the light-emitting window 8b of lens mount 8, in this way, lens mount 8 be internally formed it is closed interior
Chamber.In order to improve sealing effect, pass through glue sealing, as an alternative, eyeglass 7 between the eyeglass 7 and the lens mount 8
Sealed between lens mount 8 by sealing ring.In order to facilitate assembly and disassembly, pass through between described image sensor 6 and the lens mount 8
Sealing ring 10 seals.
Lens assembly 5 is placed in the interior intracavitary of the lens mount 8, and can be moved along the optical axis direction of lens assembly 5.Camera lens
Component 5 includes some eyeglass (not shown)s and the lens hanger (not shown) for installing eyeglass.
Lens driving apparatus is used to drive the lens assembly 5 to move along the optical axis direction of lens assembly 5, by varying mirror
The distance between head assembly 5 and imaging sensor 6, to realize focusing.Lens driving apparatus in the present embodiment includes driven magnetic
Property part 4 and active magnetic part 3, the driven magnetic part 4 are placed in the lens mount 8, and are connected with the lens assembly 5,
The active magnetic part 3 be installed on outside the lens mount 8 with the 4 corresponding position of driven magnetic part, and can edge
The optical axis direction movement of lens assembly 5.In this way, when the optical axis direction of active magnetic part 3 along lens assembly 5 moves, pass through magnetic force
Driving driven magnetic part 4 is moved along the optical axis direction of lens assembly 5, and driven magnetic part 4 drives lens assembly 5 along lens assembly 5
Optical axis direction movement, so that the distance between lens assembly 5 and imaging sensor 6 are adjusted, so as to fulfill focusing function.This reality
With the lens focusing device of new embodiment, original dynamic sealing is changed to complete static seal, the reliability of sealing is carried significantly
It is high so that lens focusing device can be used for high temperature, hyperbaric environment, enhances product reliability, extends product service life.
In one embodiment, the driven magnetic part 4 and the active magnetic part 3 are ring-type, the driven magnetic
Part 4 is fixedly set on the lens assembly 5, and 3 movable set of active magnetic part is on the lens mount 8.Due to driven
Magnetic part 4 and active magnetic part 3 are ring-type, and active magnetic part 3 cradles driven magnetic part 4 so that driven magnetic part 4 and master
Magnetic force between dynamic magnetic part 3 is uniform, and then can cause 5 stable movement of lens assembly.
The present utility model people is found through experiments that, if the width of the optical axis direction driven magnetic part 4 along lens assembly 5
It is driven when driven magnetic part 4 and active magnetic part 3 are because of assembling reason misalignment with being of same size for the active magnetic part 3
The magnetic field of magnetic part 4 and the magnetic field of active magnetic part 3 are not exclusively overlapping, can cause the fortune of driven magnetic part 4 and active magnetic part 3
It is dynamic asynchronous, produce delay phenomenon.In order to solve the problems, such as this, along the optical axis direction of lens assembly 5, the driven magnetic part 4
The width of 3 lens assembly 5 of width and the active magnetic part is unequal.Further, the width of the driven magnetic part 4 is more than
The width of the active magnetic part 3.
In order to facilitate assembling, cricoid boss 5a is provided with the outer circumferential surface of the lens assembly 5, and in the lens group
One end of part 5 has been connected through a screw thread locking nut 9, and the driven magnetic part 4 is located at the boss 5a and the locking nut 9
Between.
In one embodiment, the lens driving apparatus further includes knob 1, and the knob 1 is rotatably mounted around institute
State on lens mount 8, and the knob 1 is connected by transmission mechanism with the active magnetic part 3, is driven and led by turn knob 1
Dynamic magnetic part 3 is moved along the optical axis direction of lens assembly 5, to facilitate focusing.Preferably, the transmission mechanism includes being arranged on institute
State the helicla flute 1a on 1 internal face of knob and pin that is being arranged on the active magnetic part 3 and being slided along helicla flute 1a
2.During turn knob 1, pin 2 is slided along helicla flute 1a, drives active magnetic part 3 to be moved along the optical axis direction of lens assembly 5.
In conclusion lens focusing device provided by the utility model, 5 edge of lens assembly is driven by magnetic drive device
The optical axis direction movement of lens assembly 5, is changed to complete static seal by original dynamic sealing, greatly improves the reliability of sealing,
So that lens focusing device can be used for high temperature, hyperbaric environment, product reliability is enhanced, extends product service life.
In another embodiment of the utility model, there is provided a kind of endoscope, including the lens focusing dress in above-described embodiment
Put.Endoscope is as a result of above-mentioned lens focusing device so that endoscope can use conventional high temperature and pressure cleaning-sterilizing
Mode, reduces the product cleaning-sterilizing time, adds the service efficiency of product, and enhances the reliability of product.
Embodiment described above only expresses the several embodiments of the utility model, its description is more specific and detailed,
But it should not be interpreted as limiting the scope of the present invention.It should be pointed out that for the common of this area
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.
Claims (10)
1. a kind of lens focusing device, including：
Lens mount；
Lens assembly, lens assembly are placed in the lens mount, and can be moved along the optical axis direction of lens assembly；
It is characterized in that, further include：
Lens driving apparatus, lens driving apparatus are used to drive the lens assembly to move along the optical axis direction of lens assembly；Institute
Stating lens driving apparatus includes：
Driven magnetic part, driven magnetic part are placed in the lens mount, and are connected with the lens assembly；With
Active magnetic part, active magnetic part be installed on the lens mount outside with the corresponding position of driven magnetic part,
And it can be moved along the optical axis direction of the lens assembly to drive driven magnetic part to move.
2. lens focusing device according to claim 1, it is characterised in that the driven magnetic part and the active magnetic
Part is ring-type, and the driven magnetic part is fixedly set on the lens assembly, and the active magnetic part movable set is in institute
State on lens mount.
3. lens focusing device according to claim 2, it is characterised in that along the optical axis direction of the lens assembly, institute
The width for stating the width and the active magnetic part of driven magnetic part is unequal.
4. lens focusing device according to claim 3, it is characterised in that along the optical axis direction of the lens assembly, institute
The width for stating driven magnetic part is more than the width of the active magnetic part.
5. lens focusing device according to claim 2, it is characterised in that be provided with the outer circumferential surface of the lens assembly
Cricoid boss, and one end of the lens assembly has been connected through a screw thread locking nut, the driven magnetic part is positioned at described
Between boss and the locking nut.
6. lens focusing device according to claim 2, it is characterised in that the lens driving apparatus further includes knob,
The knob is rotatably mounted around on the lens mount, and the knob is connected by transmission mechanism and the active magnetic part
Connect, for driving active magnetic part to be moved along the optical axis direction of the lens assembly.
7. lens focusing device according to claim 6, it is characterised in that the transmission mechanism includes being arranged on the rotation
Helicla flute and pin that is being arranged on the active magnetic part and being slided along helicla flute on button internal face.
8. lens focusing device as claimed in any of claims 1 to 7, it is characterised in that the lens mount is tool
There is the tubular structure of light inlet and light-emitting window, sealed set has eyeglass at the light inlet, seals and sets at the light-emitting window
It is equipped with imaging sensor.
9. lens focusing device according to claim 8, it is characterised in that pass through between the eyeglass and the lens mount
Glue or sealing ring sealing, are sealed between described image sensor and the lens mount by sealing ring.
10. a kind of endoscope camera head, it is characterised in that including the lens focusing as described in any one in claim 1-9
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721273113.4U CN207352254U (en) | 2017-09-29 | 2017-09-29 | Lens focusing device and the endoscope camera head with the lens focusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721273113.4U CN207352254U (en) | 2017-09-29 | 2017-09-29 | Lens focusing device and the endoscope camera head with the lens focusing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207352254U true CN207352254U (en) | 2018-05-11 |
Family
ID=62358076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721273113.4U Active CN207352254U (en) | 2017-09-29 | 2017-09-29 | Lens focusing device and the endoscope camera head with the lens focusing device |
Country Status (1)
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| CN (1) | CN207352254U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108577792A (en) * | 2018-05-22 | 2018-09-28 | 浙江优亿医疗器械有限公司 | A kind of focusing system of endoscope |
| CN109669310A (en) * | 2018-12-27 | 2019-04-23 | 深圳市锐图技术有限公司 | Ray machine and projection device |
-
2017
- 2017-09-29 CN CN201721273113.4U patent/CN207352254U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108577792A (en) * | 2018-05-22 | 2018-09-28 | 浙江优亿医疗器械有限公司 | A kind of focusing system of endoscope |
| CN109669310A (en) * | 2018-12-27 | 2019-04-23 | 深圳市锐图技术有限公司 | Ray machine and projection device |
| CN109669310B (en) * | 2018-12-27 | 2021-04-23 | 深圳紫晶光电科技有限公司 | Optical machine and projection equipment |
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