CN206848552U - A kind of lens focusing device - Google Patents
A kind of lens focusing device Download PDFInfo
- Publication number
- CN206848552U CN206848552U CN201720774623.3U CN201720774623U CN206848552U CN 206848552 U CN206848552 U CN 206848552U CN 201720774623 U CN201720774623 U CN 201720774623U CN 206848552 U CN206848552 U CN 206848552U
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- China
- Prior art keywords
- lens
- focusing device
- gear
- lens mount
- journal stirrup
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Abstract
The utility model discloses a kind of lens focusing device, including lens mount, base and transmission component, lens mount is actively plugged in base, transmission component includes moving gear, quiet gear and screw rod, and moving gear is engaged with quiet gear, and screw rod one end is fixedly connected with quiet gear, the other end is provided with screw thread, and coordinate with lens mount screw thread, quiet gear rotates under the drive of moving gear, so that lens mount relative base under screw acting slides.Moving gear is as power source in the utility model, the gear rotation of band sound, and be straight reciprocating motion by the translating rotation of gear by the transmission of screw rod, and so as to realize the adjustment of lens focus, whole focus control is simple in construction, and manufacturing cost is low, focusing accuracy height.
Description
Technical field
It the utility model is related to focus adjusting mechanism, more particularly to a kind of lens focusing device.
Background technology
At present, lens focusing mode is that support base is mutually fixed with video camera, sets through hole among support base, spiral shell in through hole
Line coordinates with camera lens external screw thread, changes the distance between camera lens and video camera by rotating lens to realize focusing.
But there is following defect in existing focus control：
Focus operations it is inconvenient and can not automatic focusing, focusing accuracy is low, and existing automatic focusing device is by screw mandrel silk
Mother is focused, complicated, and manufacturing cost is high.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of lens focusing device, structure
Simply, the automatic focusing of camera lens is realized, and focusing accuracy is higher.
The purpose of this utility model is realized using following technical scheme：
A kind of lens focusing device, including lens mount, base and transmission component, the lens mount are actively plugged in the bottom
Seat, the transmission component include moving gear, quiet gear and screw rod, and the moving gear engages with the quiet gear, the screw rod one
End is fixedly connected with the quiet gear, and the other end is provided with screw thread, and coordinates with the lens mount screw thread, and the quiet gear is described
Rotated under the drive of moving gear, so that the lens mount relatively described base under the screw acting slides.
Further, the base includes cylinder, the cylindrical hollow, and the lens mount is contained in the cylinder
Body, the lens mount include the second journal stirrup, and second journal stirrup is located at the side of the lens mount, opened in the cylindrical sidewall
Provided with guide groove, the second journal stirrup card is put in the guide groove, and under the drive of the moving gear, the lens mount is described in
The bearing of trend of guide groove moves up and down.
Further, the lens focusing device also includes guide rod, and the guide rod is cylindrical, the lens mount bag
The first journal stirrup is included, first journal stirrup is provided with through hole, and the guide rod passes through the through hole.
Further, neck is further opened with the cylinder, the lens mount is provided with projection, and the projection is contained in
The neck.
Further, the bearing of trend of second journal stirrup is vertical with the bearing of trend of the guide groove.
Further, the lens focusing device also includes connecting pole, and second journal stirrup is provided with receiving hole, the company
Connect post and be contained in the receiving hole, so as to realize being fixedly connected for the connecting pole and the lens mount.
Further, the connecting pole is hollow, and inside is provided with internal thread, and the screw rod is threadedly coupled with the connecting pole.
Further, the hole axle direction of the receiving hole and the axis direction of the lens mount are consistent.
Compared with prior art, the beneficial effects of the utility model are：Moving gear is as power source, the gear rotation of band sound
Turn, and be straight reciprocating motion by the translating rotation of gear by the transmission of screw rod, so as to realize the adjustment of lens focus, entirely
Focus control is simple in construction, and manufacturing cost is low, and focusing accuracy is high.
Brief description of the drawings
Fig. 1 is a stereogram of the lens focusing device of the utility model one；
Fig. 2 is structural representation of the lens focusing device in addition to camera lens shown in Fig. 1；
Fig. 3 is exploded view of the lens focusing device in addition to base shown in Fig. 1.
In figure：10th, lens mount；11st, the first journal stirrup；12nd, the second journal stirrup；13rd, it is raised；20th, camera lens；30th, transmission component；
31st, moving gear；32nd, quiet gear；33rd, screw rod；40th, connecting pole；50th, guide rod；60th, base；61st, guide groove；62nd, neck.
Embodiment
Below, with reference to accompanying drawing and embodiment, the utility model is described further, it is necessary to explanation is,
On the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new
Embodiment.
As Figure 1-3, a kind of lens focusing device, including lens mount 10, camera lens 20, transmission component 30, connecting pole 40
With guide rod 50.The middle part of lens mount 10 is provided with internal thread, is screwed and is connected with camera lens 20.There is the first journal stirrup the side of lens mount 10
11 and second journal stirrup 12, a through hole is provided with the first journal stirrup 11, the through hole passes through for guide rod 50.Set on the second journal stirrup 12
There is receiving hole, the receiving hole is used to house connecting pole 40, to realize being fixedly connected for connecting pole 40 and lens mount 10.Transmission group
Part 30 includes moving gear 31, quiet gear 32 and screw rod 33, moving gear 31 and engaged with quiet gear 32, and screw rod 33 is passed through in quiet gear 32
Portion is simultaneously fixedly connected with quiet gear 32.The one end of screw rod 33 is provided with external screw thread, and connecting pole 40 is hollow and is provided with internal thread, screw rod 33 with
Connecting pole 40 is screwed connection.Guide rod 50 is cylindrical, plays guiding and position-limiting action.
In use, the lens focusing device card is put and is installed on base 60.Specifically, base 60 includes hollow circular cylinder,
Cylindrical sides are provided with guide groove 61 and neck 62.The second journal stirrup 12 on lens mount 10 is contained in guide groove 61, limits camera lens
10 frees degree of seat, make the lens mount 10 be only capable of moving up and down along guide groove 61.Outer wall is provided with projection 13, and the card of projection 13 is put in card
Groove 62, further limit the rotation of lens mount 10.Guide rod 50 further limits lens mount 10 through the through hole on the first journal stirrup 11
The free degree, make lens mount 10 be only capable of moving along the axis direction of guide rod 50.In motion process, moving gear 31 is with sound gear 32
Rotation, coordinate the screw thread of screw rod 33 and connecting pole 40 and rotate against.Because connecting pole 40 and lens mount 10 are fixed, it is only capable of edge and leads
Moved up and down to groove 61 or the axis direction of guide rod 50, therefore the relatively quiet gear 32 of connecting pole 40 does straight reciprocating motion.Reciprocal fortune
During dynamic, lens mount 10 drives camera lens 20 also to be moved reciprocatingly along guide rod 50 or guide groove 61, realizes the focal length of camera lens 20
Adjustment.
Above-mentioned embodiment is only preferred embodiment of the present utility model, it is impossible to is protected with this to limit the utility model
Scope, the change of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacing belongs to
In the utility model scope claimed.
Claims (8)
- A kind of 1. lens focusing device, it is characterised in that：The lens focusing device includes lens mount, base and transmission component, The lens mount is actively plugged in the base, and the transmission component includes moving gear, quiet gear and screw rod, the moving gear with The quiet gear engagement, described screw rod one end are fixedly connected with the quiet gear, and the other end is provided with screw thread, and with the lens mount Screw thread coordinates, and the quiet gear rotates under the drive of the moving gear, so that the lens mount is under the screw acting Relatively described base slides.
- 2. lens focusing device as claimed in claim 1, it is characterised in that：The base includes cylinder, in the cylinder Sky, the lens mount are contained in the cylinder, and the lens mount includes the second journal stirrup, and second journal stirrup is located at the camera lens The side of seat, guide groove is offered in the cylindrical sidewall, the second journal stirrup card is put in the guide groove, in the moving teeth Under the drive of wheel, bearing of trend of the lens mount along the guide groove moves up and down.
- 3. the lens focusing device as described in any one of claim 1 or 2, it is characterised in that：The lens focusing device also includes Guide rod, the guide rod is cylindrical, and the lens mount includes the first journal stirrup, and first journal stirrup is provided with through hole, described Guide rod passes through the through hole.
- 4. lens focusing device as claimed in claim 3, it is characterised in that：Neck, the mirror are further opened with the cylinder Headstock is provided with projection, and the projection is contained in the neck.
- 5. lens focusing device as claimed in claim 2, it is characterised in that：The bearing of trend of second journal stirrup and the guiding The bearing of trend of groove is vertical.
- 6. lens focusing device as claimed in claim 2, it is characterised in that：The lens focusing device also includes connecting pole, institute State the second journal stirrup and be provided with receiving hole, the connecting pole is contained in the receiving hole, so as to realize the connecting pole and the mirror Headstock is fixedly connected.
- 7. lens focusing device as claimed in claim 6, it is characterised in that：The connecting pole is hollow, and inside is provided with internal thread, institute Screw rod is stated to be threadedly coupled with the connecting pole.
- 8. lens focusing device as claimed in claim 6, it is characterised in that：The hole axle direction of the receiving hole and the lens mount Axis direction it is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720774623.3U CN206848552U (en) | 2017-06-29 | 2017-06-29 | A kind of lens focusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720774623.3U CN206848552U (en) | 2017-06-29 | 2017-06-29 | A kind of lens focusing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206848552U true CN206848552U (en) | 2018-01-05 |
Family
ID=60803130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720774623.3U Active CN206848552U (en) | 2017-06-29 | 2017-06-29 | A kind of lens focusing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206848552U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110727076A (en) * | 2019-09-29 | 2020-01-24 | 舜宇光学(中山)有限公司 | Focusing structure |
| CN111190318A (en) * | 2020-02-21 | 2020-05-22 | 厦门力鼎光电股份有限公司 | High-precision quick automatic focusing mechanism |
-
2017
- 2017-06-29 CN CN201720774623.3U patent/CN206848552U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110727076A (en) * | 2019-09-29 | 2020-01-24 | 舜宇光学(中山)有限公司 | Focusing structure |
| CN111190318A (en) * | 2020-02-21 | 2020-05-22 | 厦门力鼎光电股份有限公司 | High-precision quick automatic focusing mechanism |
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