CN203705787U - Self-locking camera external focusing apparatus - Google Patents
Self-locking camera external focusing apparatus Download PDFInfo
- Publication number
- CN203705787U CN203705787U CN201320893044.2U CN201320893044U CN203705787U CN 203705787 U CN203705787 U CN 203705787U CN 201320893044 U CN201320893044 U CN 201320893044U CN 203705787 U CN203705787 U CN 203705787U
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- self
- external focusing
- worm screw
- camera external
- worm
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- Expired - Fee Related
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Abstract
The utility model relates to a camera and provides a self-locking camera external focusing apparatus characterized by simple structure, low manufacture cost, realization of precise positioning of external focusing, and improvement of imaging quality of camera shooting. The self-locking camera external focusing apparatus comprises a transparent cover shell body, a transparent cover plate, an infrared lamp plate, a lens, a transmission mechanism, a worm rod and an adjusting mechanism. The transmission mechanism is used for adjusting lens sheet axial relative distance of the lens, the worm rod is engaged with a worm wheel of the transmission mechanism, and the adjusting mechanism is connected with one end of the worm rod and is used for controlling rotation of the worm rod.
Description
Technical field
The utility model relates to video camera, particularly a kind of self-locking video camera external focusing device.
Background technology
Traditional video camera is in the time of shooting, and the relative distance of object and video camera is that object distance changes.For the object that makes different object distances can obtain image clearly by camera lens on Using Image Plate, must carry out focusing process.Current focusing process adopts following two kinds of modes to carry out conventionally: one, change the focusing mode of image distance, keep the focal length of camera lens constant, by adjusting the axial location of whole arrangement of mirrors head, thereby change the distance between camera lens and Using Image Plate, change image distance and obtain image clearly.This focusing mode need move whole arrangement of mirrors head, because the eyeglass of whole arrangement of mirrors head is many, volume is large, so focus adjusting mechanism complexity.Two, the outer focusing mode of change focal length, by the axial location of certain arrangement of mirrors sheet in moving lens, thereby changes the relative distance between eyeglass in camera lens, changes lens focus and obtains image clearly.Though the whole arrangement of mirrors head of this outer focusing mode can keep motionless, focus adjusting mechanism is simpler, and its structural instability cannot ensure that the image quality of camera lens is in optimum condition.With reference to figure 1, existing video camera external focusing device comprise gear train 1 ' for adjusting on show axial relative distance of camera lens, with the toothed disc 11 ' of gear train 1 ', the 12 ' gear shaft being meshed 2 ', 3 ' be connected with gear shaft 2 ', 3 ' and control gear axle 2 ', 3 ' rotates for realizing the adjusting mechanism of outer focusing.The external focusing device of this kind of structure is in the time adjusting on show axial relative distance of camera lens, the toothed disc 11 ' of gear train 1 ', 12 ' with gear shaft 2 ', the 3 ' intermeshing connection, while making it adjust rotation, between toothed disc and gear shaft, there is the problem of a running clearance, make it cannot precise positioning, cause larger position deviation, make the relative distance of eyeglass in camera lens cannot reach optimal imaging position, make final shooting image quality not high, though prior art is the outer focusing structure of some other mode also, but complex structure, cost is high.
Summary of the invention
Therefore, for above-mentioned problem, the utility model proposes a kind of simple in structure, cost is low, realize outer focusing precise positioning, improve the self-locking video camera external focusing device of shooting image quality.
For realizing above-mentioned technical matters, the solution that the utility model is taked is: a kind of self-locking video camera external focusing device, comprises the adjusting mechanism that gear train for adjusting on show axial relative distance of camera lens, the worm screw being meshed with the worm gear dish of gear train are connected with worm screw one end and rotate for controlling worm screw.
Further, described adjusting mechanism comprises two rotation slots that are connected with worm screw one end respectively.
Further, described rotation slot is and establishes reeded cylinder.
By adopting aforementioned techniques scheme, the beneficial effects of the utility model are: by adopting worm gear to coordinate with the rotation gapless of worm screw, rotate by adjusting mechanism control worm screw, drive worm gear to rotate by worm screw again and adjust on show axial relative distance of camera lens, make video camera realize the precise positioning of outer focusing, make the relative distance of eyeglass in camera lens reach optimal imaging position, greatly improve shooting image quality, the utility model is simple in structure simultaneously, cost is low, the focusing convenience of video camera, Stability Analysis of Structures, can wide popularization and application.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing video camera external focusing device;
Fig. 2 is the structural representation of the utility model embodiment.
Embodiment
Now with specific embodiment, the utility model is further illustrated by reference to the accompanying drawings.
With reference to figure 2, the disclosed a kind of self-locking video camera external focusing device of the utility model embodiment, comprise the adjusting mechanism 4 that gear train 1 for adjusting on show axial relative distance of camera lens, the worm screw 2,3 being meshed with the worm gear dish 11,12 of gear train 1 are connected with worm screw 2,3 one end and rotate for controlling worm screw 2,3, described adjusting mechanism 4 comprises two rotation slots 41,42 that are connected with worm screw 2,3 one end respectively, and described rotation slot 41,42 is the cylinder that is provided with interior hexagonal groove.
The utility model is by adopting worm gear to coordinate with the rotation gapless of worm screw, rotate by adjusting mechanism control worm screw, drive worm gear to rotate by worm screw again and adjust on show axial relative distance of camera lens, make video camera realize the precise positioning of outer focusing, make the relative distance of eyeglass in camera lens reach optimal imaging position, greatly improved shooting image quality, the utility model is simple in structure simultaneously, and cost is low, the focusing convenience of video camera, Stability Analysis of Structures, can wide popularization and application.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but not departing from the category of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection domain of the present utility model.
Claims (3)
1. a self-locking video camera external focusing device, is characterized in that: the adjusting mechanism (4) that comprises gear train (1) for adjusting on show axial relative distance of camera lens, is connected and rotates for controlling worm screw (2), (3) with the worm gear dish (11) of gear train (1), worm screw (2), (3) that (12) are meshed with worm screw (2), (3) one end.
2. self-locking video camera external focusing device according to claim 1, is characterized in that: described adjusting mechanism (4) comprises two rotation slot (41), (42) that are connected with worm screw (2), (3) one end respectively.
3. self-locking video camera external focusing device according to claim 2, is characterized in that: described rotation slot (41), (42) are establishes reeded cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320893044.2U CN203705787U (en) | 2013-12-31 | 2013-12-31 | Self-locking camera external focusing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320893044.2U CN203705787U (en) | 2013-12-31 | 2013-12-31 | Self-locking camera external focusing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203705787U true CN203705787U (en) | 2014-07-09 |
Family
ID=51056200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320893044.2U Expired - Fee Related CN203705787U (en) | 2013-12-31 | 2013-12-31 | Self-locking camera external focusing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203705787U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713446A (en) * | 2013-12-31 | 2014-04-09 | 泉州市东南光电有限公司 | External focusing device of self-locking camera |
| CN111678607A (en) * | 2020-05-21 | 2020-09-18 | 电子科技大学 | Turbine blade surface temperature measuring device based on rotary prism |
-
2013
- 2013-12-31 CN CN201320893044.2U patent/CN203705787U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713446A (en) * | 2013-12-31 | 2014-04-09 | 泉州市东南光电有限公司 | External focusing device of self-locking camera |
| CN103713446B (en) * | 2013-12-31 | 2017-02-01 | 泉州市东南光电股份有限公司 | External focusing device of self-locking camera |
| CN111678607A (en) * | 2020-05-21 | 2020-09-18 | 电子科技大学 | Turbine blade surface temperature measuring device based on rotary prism |
| CN111678607B (en) * | 2020-05-21 | 2021-06-01 | 电子科技大学 | Turbine blade surface temperature measuring device based on rotary prism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: QUANZHOU SOUTHEAST PHOTOELECTRIC CO., LTD. Free format text: FORMER NAME: QUANZHOU SOUTHEAST PHOTOELECTRIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 362000 Zhi Tai Road, Quanzhou economic and Technological Development Zone, Fujian, 7-12A Patentee after: Quanzhou Southeast Photoelectric Co., Ltd. Address before: 362000 Zhi Tai Road, Quanzhou economic and Technological Development Zone, Fujian, 7-12A Patentee before: Quanzhou SouthEast Photoelectric Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20161231 |