CN101566781B - Distance-measurement tool - Google Patents
Distance-measurement tool Download PDFInfo
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- CN101566781B CN101566781B CN2008103013169A CN200810301316A CN101566781B CN 101566781 B CN101566781 B CN 101566781B CN 2008103013169 A CN2008103013169 A CN 2008103013169A CN 200810301316 A CN200810301316 A CN 200810301316A CN 101566781 B CN101566781 B CN 101566781B
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- distance
- measurement tool
- lens module
- camera lens
- plummer
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Abstract
The invention relates to a distance-measurement tool, which is used for measuring the move distances of a lens module when focusing at different angles. The distance-measurement tool comprises a fixed seat, a rotating plate, a load-carrying table, a distance-measuring device and a rotating shaft which passes through the fixed seat and is connected with the rotating plate. The rotating plate is provided with a fixed plane, wherein when the distance-measurement tool is used, the fixed plane is not parallel with the horizontal plane which is vertical with the direction of the gravitational acceleration. The load-carrying table and the distance-measuring device are fixed on two opposite ends of the fixed plane. The distant-measuring device is aligned with the lens module carried by the load-carrying table. When the rotating plate rotates, the angle between the load-carrying table fixed on the fixed plane and the lens module carried by the load-carrying table and a horizontal plane changes, so the distances that the lens module moves when focusing at different angles can be measured.
Description
Technical field
The present invention relates to a kind of distance-measurement tool, relate in particular to a kind of distance-measurement tool of measuring the distance that moves when the camera lens module is focused under different angles.
Background technology
The camera module of the automatic focus function of tool has been widely used in imaging field, and especially the application in digital camera is more extensive.Along with photographic equipment use increasingly extensive, also increasingly high to the focusing accuracy requirement of camera module, it need measure and calibrate the various parameters of camera module.(see also Camera calibration with a motorized zoom lens; Pattern Recognition; 2000.Proceedings.15th International Conference on Volume 4,3-7 Sept.2000Page (s): 495-498vol.4)
In the manufacture process of the camera module of the automatic focus function of tool; In order to measure its focusing precision; When needing the simulation user under various angles, to use this camera module usually, whether the distance that moves when the camera lens module of said camera module is focused under same focusing parameter is consistent.Especially need measure when said camera lens module has different angle with surface level the distance that it moves when focusing.The right consistance of displacement when still not having at present the measurement of correlation tool and being used for measuring the camera lens module and under different angles, focusing.
Summary of the invention
There is mirror so, the distance-measurement tool of the distance that moves when being necessary to provide a kind of camera lens module of measuring focusing mechanism under different angles, to focus.
A kind of distance-measurement tool is used to measure the distance that moves when the camera lens module is focused under different angles.Said distance-measurement tool comprises that a holder, a swivel plate, a plummer, a distance measuring equipment and pass this holder and the affixed turning axle of said swivel plate.It is motionless that said holder keeps in measuring process, and said swivel plate has a stationary plane, and when said stationary plane used at said distance-measurement tool, not parallel with a surface level, said surface level was the face vertical with the acceleration of gravity direction.Said plummer and distance measuring equipment are fixed on the opposite end of this stationary plane, and said plummer is used for fixing the camera lens module, and said distance measuring equipment is aimed at this camera lens module.
With respect to prior art, the relative two ends of stationary plane that distance-measurement tool of the present invention is fixed on swivel plate to the camera lens module of said plummer and carrying thereof and distance measuring equipment, the distance that moves when measuring the focusing of camera lens module.Said swivel plate is also affixed with a turning axle, and when it rotated, plummer and the camera lens module of carrying thereof and the angle of surface level that are fixed on the stationary plane will change, and therefore can measure the distance that moves when the camera lens module is focused under different angles.
Description of drawings
The schematic perspective view of the distance-measurement tool that Fig. 1 provides for embodiment of the present invention.
The side view of the distance-measurement tool that Fig. 2 provides for embodiment of the present invention.
Embodiment
To combine accompanying drawing that embodiment of the present invention is done further to describe in detail below.
See also Fig. 1 and Fig. 2, the distance-measurement tool 100 that embodiment of the present invention provides, the distance that the camera lens module that is used for measuring camera module 200 moves when under different angles, focusing.
Said camera module 200 comprises a camera lens module and an autofocus motor.During focusing, autofocus motor drives said camera lens module and moves up and down along its optical axis.
Said distance-measurement tool 100 comprises that a holder 10, a swivel plate 20, a plummer 30, a distance measuring equipment 40 and pass this holder 10 and the turning axle 50 affixed with this swivel plate 20.Said swivel plate 20 has a stationary plane 21, and said plummer 30 and distance measuring equipment 40 are fixed on the opposite end of said stationary plane 21.
It is motionless that said holder 10 keeps in measuring process, and it has a through hole and supplies turning axle 50 to pass.In this embodiment, when distance-measurement tool 100 used, said holder 10 was perpendicular to surface level and turning axle 50, and said surface level is the face vertical with the acceleration of gravity direction.
Said swivel plate 20 is connected on the said holder 10.The stationary plane 21 of said swivel plate 20 is back to said holder 10.When said stationary plane 21 uses at distance-measurement tool 100, not parallel with surface level.In this embodiment, said stationary plane 11 and surface level, turning axle 50 are vertical.
Said plummer 30 is fixed on an end of said stationary plane 21, and it is used for carrying and fixing said camera module 200.In this embodiment, said plummer 30 is a flat board, perpendicular to the stationary plane 21 of said swivel plate 20.Said plummer 30 has two surfaces, and one of them surface faces said distance measuring equipment 40, and another surface is back to said distance measuring equipment 40.When facing the said camera of the surface bears module 200 of distance measuring equipment 40, there is not through hole on this surface.When back to the said camera of the surface bears module 200 of distance measuring equipment 40, have on this surface one with said camera module 200 in the coaxial through hole of camera lens module.
Said distance measuring equipment 40 is used for measuring the distance that the camera lens module of camera module 200 moves when focusing.Said distance measuring equipment 40 is aimed at said camera lens module; When the focusing of camera lens module is moved; Send measuring-signal earlier and measure the camera lens module before focusing and between the distance measuring equipment 40 apart from S1, send measuring-signal again and measure the camera lens module between defocused and the distance measuring equipment 40 apart from S2.Be appreciated that S=S2-S1 is the displacement S of camera lens module in focus process.
In this embodiment, said distance measuring equipment 40 is a laser range finder, and it is made up of laser transmitting system and detection system, and laser transmitting system emission laser during work returns after the reflecting surface reflection in the camera lens module, and received by detector.Measure the time of being experienced that from laser-bounce to the reflected light, is received, can obtain the distance between camera lens module and the distance measuring equipment 40.
It is affixed with said swivel plate 20 that one end of said turning axle 50 passes this holder 10, drives said swivel plate 20 rotations.In this embodiment, when distance-measurement tool 100 used, said turning axle 50 was parallel to surface level and vertical with said stationary plane 21.Therefore, said stationary plane 21 is the surfaces of revolution of swivel plate 20, and it can make the camera lens module horizontal by any angle.The other end of said turning axle 50 can connect a driving mechanism, and in this embodiment, said Drive Structure through controlling its rotation step number, can reach the angle between accurate controls lens module and the surface level for ease of the step motor of control rotation step number.
When measuring; Said driving shaft 50 driven in rotation plates 20 rotate to an angle; Making the camera lens module and the angle between the surface level of said camera module 200 is angle A 1, when this angle A is measured said camera lens module for 1 time and under a certain focusing parameter, is focused, and its displacement B1 in focus process.Driven in rotation plate 10 rotates to an angle again, and making the camera lens module of said camera module 200 and the angle between the surface level is angle A 2, when A2 under this angle measures said camera lens module and under a certain focusing parameter, focuses, and its B2 in focus process.Be appreciated that it is arbitrarily angled making the camera lens module of said camera module 200 and the angle between the surface level through 10 rotations of driven in rotation plate, the displacement when the camera lens module that can survey is focused under arbitrarily angled.Through the displacement of camera lens module under the contrast different angles, can judge its focusing precision when the camera lens module uses under different angles.
With respect to prior art, the relative two ends of stationary plane that distance-measurement tool of the present invention is fixed on swivel plate to the camera lens module of said plummer and carrying thereof and distance measuring equipment, the distance that moves when measuring the focusing of camera lens module.Said swivel plate is also affixed with a turning axle, and when it rotated, plummer and the camera lens module of carrying thereof and the angle of surface level that are fixed on the stationary plane will change, and therefore can measure the distance that moves when the camera lens module is focused under different angles.
It is understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (8)
1. distance-measurement tool; Be used to measure the distance that moves when the camera lens module is focused under different angles, it is characterized in that, said distance-measurement tool comprises that a holder, a swivel plate, a plummer, a distance measuring equipment and pass this holder and the affixed turning axle of said swivel plate; It is motionless that said holder keeps in measuring process; Said swivel plate has a stationary plane, and is when said stationary plane uses at said distance-measurement tool, not parallel with a surface level; Said surface level is the face vertical with the acceleration of gravity direction; Said plummer and distance measuring equipment are fixed on the opposite end of this stationary plane, and said plummer is used for fixing the camera lens module, and said distance measuring equipment is aimed at this camera lens module.
2. distance-measurement tool as claimed in claim 1 is characterized in that, said distance-measurement tool also comprises a Drive Structure, and said Drive Structure links to each other with this turning axle, drives this turning axle rotation.
3. distance-measurement tool as claimed in claim 2 is characterized in that, said Drive Structure is a stepper motor.
4. distance-measurement tool as claimed in claim 1 is characterized in that, said distance measuring equipment is a laser range finder.
5. distance-measurement tool as claimed in claim 1 is characterized in that, said plummer and said swivel plate are one-body molded.
6. distance-measurement tool as claimed in claim 1 is characterized in that, said plummer has two surfaces, and one of them surface is used to carry said camera lens module and towards said distance measuring equipment.
7. distance-measurement tool as claimed in claim 1 is characterized in that, said plummer has two surfaces, and one of them surface is used to carry said camera lens module and said dorsad distance measuring equipment, and said surface has a through hole.
8. distance-measurement tool as claimed in claim 1 is characterized in that the stationary plane of said swivel plate is vertical with surface level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103013169A CN101566781B (en) | 2008-04-25 | 2008-04-25 | Distance-measurement tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103013169A CN101566781B (en) | 2008-04-25 | 2008-04-25 | Distance-measurement tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101566781A CN101566781A (en) | 2009-10-28 |
| CN101566781B true CN101566781B (en) | 2012-03-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008103013169A Expired - Fee Related CN101566781B (en) | 2008-04-25 | 2008-04-25 | Distance-measurement tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN101566781B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372643B (en) * | 2015-10-15 | 2017-11-03 | 广东欧珀移动通信有限公司 | A kind of ranging calibration method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4993830A (en) * | 1989-12-18 | 1991-02-19 | Systronics, Incorporated | Depth and distance measuring system |
| CN2374845Y (en) * | 1999-01-29 | 2000-04-19 | 西安飞达机械电子公司 | Double-lens laser linear theodolite |
| JP3061811B2 (en) * | 1988-04-15 | 2000-07-10 | 松下電器産業株式会社 | Fabrication method of non-single crystal thin film |
| CN1894557A (en) * | 2003-12-16 | 2007-01-10 | 特里伯耶拿有限公司 | Calibration of a surveying instrument |
-
2008
- 2008-04-25 CN CN2008103013169A patent/CN101566781B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3061811B2 (en) * | 1988-04-15 | 2000-07-10 | 松下電器産業株式会社 | Fabrication method of non-single crystal thin film |
| US4993830A (en) * | 1989-12-18 | 1991-02-19 | Systronics, Incorporated | Depth and distance measuring system |
| CN2374845Y (en) * | 1999-01-29 | 2000-04-19 | 西安飞达机械电子公司 | Double-lens laser linear theodolite |
| CN1894557A (en) * | 2003-12-16 | 2007-01-10 | 特里伯耶拿有限公司 | Calibration of a surveying instrument |
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| Publication number | Publication date |
|---|---|
| CN101566781A (en) | 2009-10-28 |
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