CN103543574A - Focusing and fine-adjusting method and system for variable-focal-length optical lens - Google Patents
Focusing and fine-adjusting method and system for variable-focal-length optical lens Download PDFInfo
- Publication number
- CN103543574A CN103543574A CN201310502923.2A CN201310502923A CN103543574A CN 103543574 A CN103543574 A CN 103543574A CN 201310502923 A CN201310502923 A CN 201310502923A CN 103543574 A CN103543574 A CN 103543574A
- Authority
- CN
- China
- Prior art keywords
- focusing
- trim values
- fine setting
- step number
- requirements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Lens Barrels (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
The invention provides a focusing and fine-adjusting method for a variable-focal-length optical lens. The method comprises the following steps of A, a focusing motor is controlled by a DSP to act and read resolution values; B, whether the resolution values meet the requirements is judged, and the step C is carried out if the resolution values meet the requirements or the step A is carried out if the resolution values don't meet the requirements; C, the step number and the fine-adjusting values of the focusing motor are calculated to generate the step number after fine adjustment; D, the focusing motor moves to the fine-adjusted position to finish focusing. The focusing and fine-adjusting method and system have the advantages that a focused image plane is adjusted to the optimal clear point of the peripheral area through a method slightly sacrificing central area analysis, namely, the center and the periphery can meet the standards and the requirements, the resolution loss in the central area is slight and can be ignored, and accordingly the standards and the requirements are met.
Description
Technical field
The present invention relates to focusing method and system, relate in particular to focusing method for trimming and the system of focal optical lens.
Background technology
Digital image product is now universal, and the digital image product of optical zoom can make in the constant situation in camera site, and the subject in a distant place is amplified and furthered, and the shooting work of great convenience, is therefore subject to people's favor.In optical zoom audio and video products, because eyeglass is in the process of manufacturing, be subject to eyeglass material, technique, assembling tolerance, and position of image sensor deviation etc. factors, cause the central area of image and peripheral regions resolution gap excessive, at focusing rear center region resolution automatically, reach standard-required, and surrounding or certain corner resolution cannot reach standard, cause captured image section clear, part is fuzzy, cannot obtain satisfied image works.
Known according to basic imaging schematic diagram, part keeps to the side, because the refraction angle of lens set is larger, the incident angle of imageing sensor is also larger, its resolution own is just starkly lower than core, then is subject to eyeglass material, technique, and the impact of packaging technology, cause the best articulation point in central area and the best articulation point of surrounding not in same plane.
According to taking custom, the emphasis that generally will take can be positioned at the central point of shooting area, optics zoomed image product ，Dou Shiyi center 1/9 arda sampling judgement sharpness when focusing conventionally, and sharpness peak point thinks the best articulation point of focusing.By this focusing mode, can make central area reach best resolution.In the ideal case, shown in plane, be defocused position, herein surrounding and center all its as plane depth scope Best Point on, can obtain desirable image.
But in practice, owing to existing the problem ，Yi center of saying to be as the criterion to defocused above, surrounding is not on best articulation point, and because surrounding itself is less as plane depth scope, resolution can sharply decline after leaving best articulation point, thereby cause the resolution of surrounding to meet the demands.
Normal conditions occur after this problem aborning, this type of camera lens can only be scrapped to processing as defective products, because problems causes the number of shots of scrapping more, to producing timely delivery guaranteed rate and production capacity, have considerable influence.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of focusing method for trimming of focal optical lens.
The focusing method for trimming that the invention provides a kind of focal optical lens, comprises the steps:
A. focusing motor starts action under DSP controls, and every action once, is read one parsing degree value;
B. judge whether resolution value meets the requirements, if meet the requirements, perform step so C, otherwise execution step A;
C. the step number of focusing motor and trim values are carried out to computing, produce the step number after fine setting;
D. focusing motor action, to the position after fine setting, completes focusing.
As a further improvement on the present invention, in described step B, judge whether resolution value reaches maximum, if reach maximum, performs step so C, otherwise execution step A.
As a further improvement on the present invention, in described step C, if trim values is positive number, the step number of focusing motor adds that trim values produces the step number after fine setting so; If trim values is negative, the step number of focusing motor deducts trim values and produces the step number after fine setting so.
As a further improvement on the present invention, before described steps A, also comprise following two steps:
First entering focusing fine setting arranges trim values is set in pattern;
Exit fine setting pattern is set, and preserve trim values, enter normal photographing mode, start focusing.
As a further improvement on the present invention, in described focusing fine setting, arrange in pattern, the span of trim values is between-10 to+10.
The present invention also provides a kind of focusing micro-tensioning system of focal optical lens, comprising:
Control module starts action for focusing motor under DSP controls, and every action once, is read one parsing degree value;
Judge module, for judging whether resolution value meets the requirements, if meet the requirements, carries out adjusting module so, otherwise carries out control module;
Adjusting module, for the step number of focusing motor and trim values are carried out to computing, produces the step number after fine setting;
Focusing module, the position after extremely finely tuning for focusing motor action, completes focusing.
As a further improvement on the present invention, in described judge module, judge whether resolution value reaches maximum, if reach maximum, carries out so adjusting module, otherwise carry out control module.
As a further improvement on the present invention, in described adjusting module, if trim values is positive number, the step number of focusing motor adds that trim values produces the step number after fine setting so; If trim values is negative, the step number of focusing motor deducts trim values and produces the step number after fine setting so.
As a further improvement on the present invention, this focusing micro-tensioning system also comprises: focusing fine setting arranges pattern, for trim values is set.
As a further improvement on the present invention, in described focusing fine setting, arrange in pattern, the span of trim values is between-10 to+10.
The invention has the beneficial effects as follows: method and system of the present invention by slightly sacrifice that central area resolves method, by to defocused being adjusted on the best articulation point of peripheral regions as plane, can make center and surrounding all can meet standard-required, and the resolution that lose central area is very slight, substantially can ignore, thereby reach standard and requirement.
Accompanying drawing explanation
Fig. 1 is method flow diagram of the present invention;
Fig. 2 is the method flow diagram that the present invention one implements.
Embodiment
As shown in Figure 1, the invention discloses a kind of focusing method for trimming of focal optical lens, comprise the steps:
In step S1, focusing motor starts action under DSP controls, and every action once, is read one parsing degree value;
In step S2, judge whether resolution value meets the requirements, if meet the requirements, perform step so S3, otherwise execution step S1;
In step S3, the step number of focusing motor and trim values are carried out to computing, produce the step number after fine setting;
In step S4, the position after focusing motor action is extremely finely tuned, completes focusing.
In described step S2, judge whether resolution value reaches maximum, if reach maximum, performs step so S3, otherwise execution step S1.
In described step S3, if trim values is positive number, the step number of focusing motor adds that trim values produces the step number after fine setting so; If trim values is negative, the step number of focusing motor deducts trim values and produces the step number after fine setting so.
For example, trim values is-3, and the step number of focusing motor is 10, and the step number after fine setting is 10-3=7 so, and in step S4, focusing motor action, to the position of 7 steps, completes focusing.
For example, trim values is+5, and the step number of focusing motor is 10, and the step number after fine setting is 10+5=15 so, and in step S4, focusing motor action, to the position of 15 steps, completes focusing.
As shown in Figure 2, as one embodiment of the present of invention, comprise the steps:
In step W1, first entering focusing fine setting and arranging trim values is set in pattern;
In step W2, exit fine setting pattern is set, and preserve trim values, enter normal photographing mode, start focusing;
In step W3, focusing motor starts action under DSP controls, and every action once, is read one parsing degree value;
In step W4, judge whether resolution value reaches maximum, if reach maximum, performs step so W5, otherwise execution step W3;
In step W5, if trim values is positive number, the step number of focusing motor adds that trim values produces the step number after fine setting so; If trim values is negative, the step number of focusing motor deducts trim values and produces the step number after fine setting so;
In step W6, the position after focusing motor action is extremely finely tuned, completes focusing.
In described focusing fine setting, arrange in pattern, the span of trim values is between-10 to+10.
The focusing micro-tensioning system that the invention also discloses a kind of focal optical lens, comprising:
Control module starts action for focusing motor under DSP controls, and every action once, is read one parsing degree value;
Judge module, for judging whether resolution value meets the requirements, if meet the requirements, carries out adjusting module so, otherwise carries out control module;
Adjusting module, for the step number of focusing motor and trim values are carried out to computing, produces the step number after fine setting;
Focusing module, the position after extremely finely tuning for focusing motor action, completes focusing.
In described judge module, judge whether resolution value reaches maximum, if reach maximum, carries out so adjusting module, otherwise carry out control module.
In described adjusting module, if trim values is positive number, the step number of focusing motor adds that trim values produces the step number after fine setting so; If trim values is negative, the step number of focusing motor deducts trim values and produces the step number after fine setting so.
This focusing micro-tensioning system also comprises: focusing fine setting arranges pattern, for trim values is set.
In described focusing fine setting, arrange in pattern, the span of trim values is between-10 to+10.
According to the feature of optical lens, although central area and surrounding district do not overlap completely as the best articulation point of plane, because central area definition range is larger, so method and system of the present invention by slightly sacrifice that central area resolves method, by to defocused being adjusted on the best articulation point of peripheral regions as plane, can make center and surrounding all can meet standard-required, and the resolution that lose central area is very slight, substantially can ignore, thereby reach standard and requirement.And technical scheme of the present invention improved production yield, reduce the wasting of resources, shorten the delivery cycle, improved work efficiency.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a focusing method for trimming for focal optical lens, is characterized in that, comprises the steps:
A. focusing motor starts action under DSP controls, and every action once, is read one parsing degree value;
B. judge whether resolution value meets the requirements, if meet the requirements, perform step so C, otherwise execution step A;
C. the step number of focusing motor and trim values are carried out to computing, produce the step number after fine setting;
D. focusing motor action, to the position after fine setting, completes focusing.
2. focusing method for trimming according to claim 1, is characterized in that, in described step B, judges whether resolution value reaches maximum, if reach maximum, performs step so C, otherwise execution step A.
3. focusing method for trimming according to claim 2, is characterized in that, in described step C, if trim values is positive number, the step number of focusing motor adds that trim values produces the step number after fine setting so; If trim values is negative, the step number of focusing motor deducts trim values and produces the step number after fine setting so.
4. according to the focusing method for trimming described in claims 1 to 3 any one, it is characterized in that, before described steps A, also comprise following two steps:
First entering focusing fine setting arranges trim values is set in pattern;
Exit fine setting pattern is set, and preserve trim values, enter normal photographing mode, start focusing.
5. focusing method for trimming according to claim 4, is characterized in that, in described focusing fine setting, arranges in pattern, and the span of trim values is between-10 to+10.
6. a focusing micro-tensioning system for focal optical lens, is characterized in that, comprising:
Control module starts action for focusing motor under DSP controls, and every action once, is read one parsing degree value;
Judge module, for judging whether resolution value meets the requirements, if meet the requirements, carries out adjusting module so, otherwise carries out control module;
Adjusting module, for the step number of focusing motor and trim values are carried out to computing, produces the step number after fine setting;
Focusing module, the position after extremely finely tuning for focusing motor action, completes focusing.
7. focusing micro-tensioning system according to claim 6, is characterized in that, in described judge module, judges whether resolution value reaches maximum, if reach maximum, carries out so adjusting module, otherwise carries out control module.
8. focusing micro-tensioning system according to claim 7, is characterized in that, in described adjusting module, if trim values is positive number, the step number of focusing motor adds that trim values produces the step number after fine setting so; If trim values is negative, the step number of focusing motor deducts trim values and produces the step number after fine setting so.
9. according to the focusing micro-tensioning system described in claim 6 to 8 any one, it is characterized in that, this focusing micro-tensioning system also comprises:
Focusing fine setting arranges pattern, for trim values is set.
10. focusing micro-tensioning system according to claim 9, is characterized in that, in described focusing fine setting, arranges in pattern, and the span of trim values is between-10 to+10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310502923.2A CN103543574A (en) | 2013-10-23 | 2013-10-23 | Focusing and fine-adjusting method and system for variable-focal-length optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310502923.2A CN103543574A (en) | 2013-10-23 | 2013-10-23 | Focusing and fine-adjusting method and system for variable-focal-length optical lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103543574A true CN103543574A (en) | 2014-01-29 |
Family
ID=49967163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310502923.2A Pending CN103543574A (en) | 2013-10-23 | 2013-10-23 | Focusing and fine-adjusting method and system for variable-focal-length optical lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103543574A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426809A (en) * | 2019-07-19 | 2019-11-08 | 昆山丘钛微电子科技有限公司 | Optical lens focus adjustment method |
| CN114236747A (en) * | 2021-07-13 | 2022-03-25 | 广东弘景光电科技股份有限公司 | Method for adjusting optimal resolution position of lens |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5850578A (en) * | 1994-09-14 | 1998-12-15 | Canon Kabushiki Kaisha | Light-projecting system for automatic focus detection |
| JP2002082279A (en) * | 2000-07-07 | 2002-03-22 | Nikon Corp | Focus detection module |
| CN101329492A (en) * | 2007-06-20 | 2008-12-24 | 深圳市菲特数码技术有限公司 | Automatic focusing system |
| CN101915976A (en) * | 2010-07-16 | 2010-12-15 | 翔德电子科技(深圳)有限公司 | Lens control method |
-
2013
- 2013-10-23 CN CN201310502923.2A patent/CN103543574A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5850578A (en) * | 1994-09-14 | 1998-12-15 | Canon Kabushiki Kaisha | Light-projecting system for automatic focus detection |
| JP2002082279A (en) * | 2000-07-07 | 2002-03-22 | Nikon Corp | Focus detection module |
| CN101329492A (en) * | 2007-06-20 | 2008-12-24 | 深圳市菲特数码技术有限公司 | Automatic focusing system |
| CN101915976A (en) * | 2010-07-16 | 2010-12-15 | 翔德电子科技(深圳)有限公司 | Lens control method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426809A (en) * | 2019-07-19 | 2019-11-08 | 昆山丘钛微电子科技有限公司 | Optical lens focus adjustment method |
| CN110426809B (en) * | 2019-07-19 | 2022-10-25 | 昆山丘钛微电子科技股份有限公司 | Focusing method of optical lens |
| CN114236747A (en) * | 2021-07-13 | 2022-03-25 | 广东弘景光电科技股份有限公司 | Method for adjusting optimal resolution position of lens |
| CN114236747B (en) * | 2021-07-13 | 2024-04-05 | 广东弘景光电科技股份有限公司 | Adjusting method for optimal resolution position of lens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107529011B (en) | A kind of motorized zoom lens control method | |
| US9817205B2 (en) | Lens module | |
| CN106324811B (en) | Optical camera lens group, image-taking device and electronic device | |
| CN102984530B (en) | Image processing system and Atomatic focusing method | |
| US9751155B2 (en) | On-board camera and its manufacturing method | |
| CN106791431B (en) | Control the method that electronic zoom camera lens focuses automatically | |
| CN101206290A (en) | Lens module unit and camera module unit | |
| US10516819B2 (en) | Electronic device with multiple lenses and lens switching method | |
| CN103246039A (en) | Focusing module and assembly process thereof | |
| CN103543574A (en) | Focusing and fine-adjusting method and system for variable-focal-length optical lens | |
| CN201845118U (en) | Optical regulation structure capable of optical zoom and auto focusing | |
| CN110661950A (en) | Camera module and electronic equipment | |
| CN103217854A (en) | Camera system and auto focus method | |
| CN103257511B (en) | A kind of Atomatic focusing method based on shot field curvature | |
| CN103558678A (en) | High-definition wide-angle lens | |
| US20120038072A1 (en) | Method for making mold for forming anti-flare lens | |
| CN104002020B (en) | Digital camera autofocus system based on welding pool and auto focusing method thereof | |
| CN112866571A (en) | Lens focusing method and device, terminal and computer readable storage medium | |
| CN104980661A (en) | Method and apparatus for self-correcting camera lens | |
| CN102902045B (en) | Pick-up lens for high-resolution single group movement industry | |
| CN103073173A (en) | Aspherical glass lens manufacturing method | |
| CN205416194U (en) | High -accuracy optical axis of two CCM counterpoint integration subassembly | |
| CN203811963U (en) | Camera shooting module group and camera device | |
| JP2007108600A (en) | Imaging apparatus | |
| CN200993689Y (en) | Camera module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20161116 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |