CN203069143U - Voice coil motor detecting device - Google Patents
Voice coil motor detecting device Download PDFInfo
- Publication number
- CN203069143U CN203069143U CN 201220724370 CN201220724370U CN203069143U CN 203069143 U CN203069143 U CN 203069143U CN 201220724370 CN201220724370 CN 201220724370 CN 201220724370 U CN201220724370 U CN 201220724370U CN 203069143 U CN203069143 U CN 203069143U
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- CN
- China
- Prior art keywords
- voice coil
- coil motor
- displacement
- picture source
- displacement detector
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- Expired - Fee Related
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- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The utility model relates to a voice coil motor detecting device, which is used for detecting a voice coil motor. The detecting device comprises a lens, a drive assembly, a displacement adjusting assembly, a picture source, a displacement detector and a display assembly for receiving projected pictures. The displacement detector, the picture source and the lens are located on the same center shaft. The lens is arranged inside the voice coil motor. The drive assembly is used for connecting the voice coil motor. The lens is located between the picture source and the display assembly. The displacement adjusting assembly is connected with the picture source. The displacement detector is adjacent to the display assembly. The voice coil motor detecting device can compensate the moving displacement of the lens during a detecting process and thus project clearer pictures. Furthermore, the detecting device can make optimum products satisfying the demands of users detected.
Description
Technical field
The utility model relates to a kind of pick-up unit, especially a kind of pick-up unit of voice coil motor.
Background technology
Voice coil motor (Voice coil Motor is called for short VCM), its principle of work is in a small-sized powerful magnetic field, by the electric current of driving control voice coil motor Inside coil, thereby produce electromagnetic force, and with this acting force, drive camera motion, reach the effect of focusing/zooming.Along with the continuous development of digital technology, the performance of camera, mobile phone etc. is also constantly improving, and just develops toward the high definition direction as the picture element of mobile lens, and for example pixel develops into 2,000,000,3,000,000,5,000,000,8,000,000 from initial 300,000.In order to make subject can in camera, form distinct image, usually need to utilize the position of magazine lens driving apparatus control camera lens or moving lens to finish good focusing.At present, this process is normally finished automatically by control circuit, and therefore, this function is called as automatic focus, and it mainly acts on is can control camera lens to move along the camera lens optical axis direction, thereby changes the distance between camera lens and projected picture.
Yet existing mobile lens usually can be because of the reason of photographer's hand vibration/shake, and has influence on the sharpness of photographic images, thereby can not satisfy the demand of market development.
The utility model content
In view of above-mentioned condition, be necessary to provide a kind of pick-up unit that helps to improve the voice coil motor of image definition.
A kind of pick-up unit of voice coil motor, it is for detection of voice coil motor, this pick-up unit comprises camera lens, driven unit, displacement adjusting part, picture source, displacement detector and is used for receiving the display module of projected picture, this displacement detector, this picture source and this camera lens are positioned at same central shaft, this camera lens is used for being installed in this voice coil motor, this driven unit is used for being connected with this voice coil motor, this camera lens is between this picture source and this display module, this displacement adjusting part links to each other with this picture source, and this displacement detector is near this display module.
This display module comprises projection screen.
This displacement detector is the photoelectric displacement detector.
This photoelectric displacement detector electrically is located on the projection screen.
The topmost performance characteristic of voice coil motor is: the size of stroke and the rectilinearity of motion, the utility model pick-up unit can detect above 2 performance characteristics of voice coil motor effectively efficiently, therefore voice coil motor can help can compensate the mobile displacement of camera lens when taking, thereby photograph picture more clearly, to satisfy user's demand.
Description of drawings
Fig. 1 is the system chart that the utility model detects voice coil motor;
Fig. 2 is the structural representation that the utility model detects voice coil motor;
Fig. 3 is the schematic diagram calculation that the utility model detects voice coil motor;
Wherein: 11, voice coil motor; 12, camera lens; 13, picture source; 14, driven unit; 15, displacement adjusting part; 16, displacement detector; 17, projection screen.
Embodiment
Be described in further detail below in conjunction with the pick-up unit of drawings and Examples to a kind of voice coil motor of the utility model.
As shown in Figure 2, pick-up unit for a kind of voice coil motor of the utility model embodiment, it is for detection of voice coil motor 11, this pick-up unit comprises camera lens 12, driven unit 14, displacement adjusting part 15, picture source 13, displacement detector 16 reaches the display module that is used for receiving projected picture, this displacement detector 16, this picture source 13 is positioned at same central shaft with this camera lens 12, this camera lens 12 is used for being installed in this voice coil motor 11, this driven unit 14 is used for being connected with this voice coil motor 11, this camera lens 12 is between this picture source 13 and this display module, this displacement adjusting part 15 links to each other with this picture source 13, this displacement detector 16 is near this display module, this display module comprises projection screen 17, the pick-up unit of voice coil motor 11, this displacement detector 16 is the photoelectric displacement detector, and this photoelectric displacement detector 16 electrically is located on the projection screen.
As shown in Figure 1 and Figure 2, displacement adjusting part 15 passes to driven unit 14 for detection of the displacement of voice coil motor 11 and with detected signal, the signal that driven unit 14 transmits according to displacement adjusting part 15, and by 11 motions of described driven unit 14 driving voice coil motors, voice coil motor 11 motions drive described camera lens 12 and carry out the straight-line displacement campaign, and this rectilinear motion comprises rectilinear motion or the rotation with respect to the top to bottom, left and right, front and rear of camera lens 12 centerline directions.
As shown in Figure 3, detect the schematic diagram calculation of voice coil motor for the utility model, at first regulate the position of picture source 13 by displacement adjusting part 15, reach the optimal imaging face of camera lens 12, picture source logical 13 is crossed camera lens 12 and is projected on the display module, if can obtain picture source 13 clearly at projection screen 17, then detect voice coil motor 11 effective travels and reach criterion of acceptability, if can not obtain picture source 13 clearly at projection screen 17, then continue to regulate its displacement to camera lens 12 directions, detect the particular location of picture source 13 by photoelectric displacement detector 16, i.e. H value and θ value as can be known, by formula θ=arctan (H/L), can obtain the central axis distance L of camera lens and projection screen, give voice coil loudspeaker voice coil driven unit 4 with this information feedback, move thereby drive voice coil motor 11, regulate camera lens 12, finally make projection screen 17 obtain the clear picture of picture source 13.
Movement by displacement adjusting part 15, picture source 13 image informations are judged, thereby the size information that will need shift motion feeds back to driven unit 14,11 motion drive camera lenses 12 move thereby driven unit 14 drives voice coil motor, thereby deviation post is compensated, namely the size of camera lens 12 strokes and the rectilinearity of motion are accurately controlled.Therefore the technical scheme by the embodiment of the invention can be because of the reason of photographer's hand vibration/shake when photographic images, and has influence on the sharpness of photographic images, and then can improve the sharpness of image taking.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solutions of the utility model content, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. the pick-up unit of a voice coil motor, it is for detection of voice coil motor, it is characterized in that: this pick-up unit comprises camera lens, driven unit, the displacement adjusting part, picture source, displacement detector reaches the display module that is used for receiving projected picture, this displacement detector, this picture source and this camera lens are positioned at same central shaft, this camera lens is used for being installed in this voice coil motor, this driven unit is used for being connected with this voice coil motor, this camera lens is between this picture source and this display module, this displacement adjusting part links to each other with this picture source, and this displacement detector is near this display module.
2. the pick-up unit of voice coil motor as claimed in claim 1, it is characterized in that: this display module comprises projection screen.
3. the pick-up unit of voice coil motor as claimed in claim 1, it is characterized in that: this displacement detector is the photoelectric displacement detector.
4. the pick-up unit of voice coil motor as claimed in claim 3, it is characterized in that: this photoelectric displacement detector electrically is located on the projection screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220724370 CN203069143U (en) | 2012-12-25 | 2012-12-25 | Voice coil motor detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220724370 CN203069143U (en) | 2012-12-25 | 2012-12-25 | Voice coil motor detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069143U true CN203069143U (en) | 2013-07-17 |
Family
ID=48767921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220724370 Expired - Fee Related CN203069143U (en) | 2012-12-25 | 2012-12-25 | Voice coil motor detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203069143U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI617856B (en) * | 2015-12-25 | 2018-03-11 | Lens group correction method | |
| CN110657748A (en) * | 2019-09-18 | 2020-01-07 | 浙江大学 | Laser displacement sensor with automatic focusing function |
| CN111948533A (en) * | 2019-05-17 | 2020-11-17 | 友华科技(香港)有限公司 | Closed-loop motor detection method |
-
2012
- 2012-12-25 CN CN 201220724370 patent/CN203069143U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI617856B (en) * | 2015-12-25 | 2018-03-11 | Lens group correction method | |
| CN111948533A (en) * | 2019-05-17 | 2020-11-17 | 友华科技(香港)有限公司 | Closed-loop motor detection method |
| CN110657748A (en) * | 2019-09-18 | 2020-01-07 | 浙江大学 | Laser displacement sensor with automatic focusing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20161225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |