CN107664805A - A kind of antidote for focusing on presetting bit - Google Patents
A kind of antidote for focusing on presetting bit Download PDFInfo
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- CN107664805A CN107664805A CN201710984305.4A CN201710984305A CN107664805A CN 107664805 A CN107664805 A CN 107664805A CN 201710984305 A CN201710984305 A CN 201710984305A CN 107664805 A CN107664805 A CN 107664805A
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- Prior art keywords
- presetting bit
- focusing
- bit
- presetting
- reached
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
The present invention discloses a kind of antidote for focusing on presetting bit, this method sets a direction during setting flag bit expression setting presetting bit, and compare the direction of direction when presetting bit is set and focusing position, carry out backhaul gap supplement or directly invoke presetting bit, it can effectively eliminate and presetting bit skew is focused on caused by the reasons such as camera lens backhaul gap, solve the problems, such as presetting bit skew.Threshold value and offset are set simultaneously, make focusing position more accurate.
Description
Technical field
The present invention relates to it is a kind of focus on presetting bit antidote, available for the visible ray with electric focusing function, heat into
As camera lens and like product, the focusing presetting bit offset problem caused by the reasons such as camera lens backhaul gap can be eliminated.
Background technology
With the further development of security and guard technology, intelligent, unattended feature turn into monitoring system development trend it
One, monitor plays very important effect in monitoring system and realized more, it is necessary to coordinate with daemon software as headend equipment
More intelligent, automation functions, the realization of these intelligent functions first have to rely on clearly image frame, especially high definition
Product requires higher to lens focusing position accuracy.But in actual applications, camera lens generally has backhaul gap, i.e., one
The presetting bit for the focus that individual direction is set, focus degree can reduce when being called from another direction.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of antidote for focusing on presetting bit, solve because between camera lens backhaul
Presetting bit offset problem is focused on caused by the reasons such as gap.
In order to solve the technical problem, the technical solution adopted by the present invention：It is a kind of to correct the method for focusing on presetting bit, bag
Include following steps：S01）, direction when setting flag bit to represent to set presetting bit, have when presetting bit is set from closely to remote and
From as far as nearly both direction, the two directions are represented using different flag bits；S02）, when calling presetting bit, judge current adjust
Whether direction when being set with the direction of presetting bit with called presetting bit is identical, if identical, directly invokes the presetting bit,
Will focusing position adjustment to presetting bit position, if it is different, then first will focus position be transferred to it is identical with the presetting bit that is called
Direction, then recall presetting bit, will focusing position adjustment to presetting bit position.
Further, in the process for presetting bit equidirectional that position of focusing is transferred to and is called, setting one first is big
The small threshold value for 2 ~ 3 times of lens focusing gap used, the threshold value be exactly adjustment focus position to called presetting bit phase Tongfang
To the stroke size of side, afterwards according to the threshold value by position of focusing be transferred to and be called presetting bit equidirectional position i.e.
Can.
Further, using flag bit 1 represent from closely to a distant place to presetting bit, represented using flag bit 0 from as far as near
The presetting bit in direction.
Further, when calling presetting bit, an offset is set, and the offset is is called presetting bit numerical values recited
0.2 ~ 0.3 times, according to presetting bit and offset and/or difference will focusing position adjustment to presetting bit position.
Further, when calling presetting bit, if presetting bit is from closely to a distant place to the current focusing position of judgement below
Direction, if current location in nearside, that is, position of focusing is direction adjustment near to far, the focusing direction for position of focusing and setting
Direction during presetting bit is identical, then directly invokes the presetting bit, by focusing position adjustment to presetting bit position；It is if current
Nearside is transferred to, then judges whether focusing position has reached nearside really again, if in distal side, the then position that will first focus in position
Reach, then call presetting bit, if do not reached, continue adjustment focusing position to nearside and judged whether to reach really.
Further, when calling presetting bit, if from the presetting bit as far as nearly direction, then it is all to exist to judge current location
Distal side, if in distal side, directly invoke the presetting bit；If it is not, then existing be transferred to distal side by focusing position, then judgement is
It is no to have reached distal side really, if it has been reached, calling presetting bit, if do not reached, continue adjustment focusing position to distal side
And judged whether to reach really.
Beneficial effects of the present invention：The present invention sets direction during flag bit expression setting presetting bit, and it is pre- to compare setting
The direction in direction and focusing position during set, carries out backhaul gap supplement or directly invokes presetting bit, can effectively can eliminate
Presetting bit skew is focused on caused by the reasons such as camera lens backhaul gap, solves the problems, such as presetting bit skew.Simultaneously set threshold value and
Offset, make focusing position more accurate.
Brief description of the drawings
Fig. 1 is the flow chart of embodiment 1.
Embodiment
The present invention is further illustrated with specific embodiment below in conjunction with the accompanying drawings.
A kind of antidote for focusing on presetting bit, comprises the following steps：S01）, set flag bit represent to set it is preset
Direction during position, have when presetting bit is set from closely to remote and from as far as nearly both direction, using different flag bits represent this two
Individual direction；S02）, when calling presetting bit, judge that current direction when calling the direction of presetting bit to be set with called presetting bit is
It is no identical, if identical, the presetting bit is directly invoked, by focusing position adjustment to presetting bit position, if it is different, then
First focusing position is transferred to and is called presetting bit identical direction, then recalls presetting bit, will focusing position adjustment in advance
Set position；In the process for presetting bit equidirectional that position of focusing is transferred to and is called, it is used to set a size first
The threshold value that 2 ~ 3 times of lens focusing gap, the threshold value be exactly adjustment focusing position to called presetting bit equidirectional side
Stroke size, the position for presetting bit equidirectional that position of focusing is transferred to and is called according to the threshold value afterwards.
In the present embodiment, using flag bit 1 represent from closely to a distant place to presetting bit, using flag bit 0 represent from as far as
The presetting bit in nearly direction.
In order that presetting bit position more prepares, when calling presetting bit, an offset is set, and the offset is is called
0.2 ~ 0.3 times of presetting bit numerical values recited, according to presetting bit and offset and/or difference will focusing position adjustment to presetting bit position
Put.
Embodiment 1
In the present embodiment, the antidote for focusing on presetting bit is applied to the camera lens of thermal imaging system, and mirror is gathered using potentiometer
The position of head, as shown in figure 1, the present embodiment concretely comprises the following steps：
S01）, direction when setting flag bit to represent to set presetting bit, have when presetting bit is set from closely to remote（Near is arrived
far）With from as far as near（Far near）Both direction, represent far to near's using 1 presetting bit for representing near to far, 0
Presetting bit；
S02）, call presetting bit when, judge the presetting bit to be called whether be direction near to far（Abbreviation far side in accompanying drawing
To）, if it is, judge the direction of current focusing position again, if current location near sides, that is, position of focusing be near to
Far directions adjust, and the focusing direction for position of focusing is identical with direction during setting presetting bit, then directly invokes the presetting bit, will
Position adjustment focus to presetting bit position；If near sides are transferred in current location in far sides, the position that will first focus,
Then judge whether focusing position has reached near sides really again, if it has been reached, presetting bit is called, if do not reached,
Continue adjustment focusing position near sides and judged whether to reach really；
S03）, it is same, if far near directions（Abbreviation near directions in accompanying drawing）Presetting bit, then judge current location
It is all in far sides, if in far sides, calls the presetting bit in far near directions；If it is not, then existing adjust focusing position
To far sides, then judge whether to have reached far sides really, if it has been reached, presetting bit is called, if do not reached, after
Continuous adjustment focusing position to far sides and is judged whether to reach really.
In the present embodiment, the process that position of focusing is transferred to near sides or far sides is：It is used to set a size first
The threshold value that 2 ~ 3 times of lens focusing gap, the threshold value be exactly adjustment focusing position to called presetting bit equidirectional side
Stroke size, afterwards according to the threshold value（Stroke size）Focusing position is transferred to and near sides or far sides.
In the present embodiment, in order that presetting bit position more prepares, when calling presetting bit, an offset, the benefit are set
Repay value by 0.2 ~ 0.3 times of calling presetting bit numerical values recited, according to actual conditions, using presetting bit and offset and/or difference as
Camera lens stroke size will focus position adjustment to presetting bit position.
Described above is only that the general principle of the present invention and preferred embodiment, those skilled in the art do according to the present invention
The improvement and replacement gone out, belongs to protection scope of the present invention.
Claims (6)
- A kind of 1. antidote for focusing on presetting bit, it is characterised in that：Comprise the following steps：S01）, set a flag bit table Show direction when presetting bit is set, have when presetting bit is set from closely to remote and from as far as nearly both direction, using different marks Position represents the two directions；S02）, when calling presetting bit, judge current to call the direction of presetting bit to set with called presetting bit When direction it is whether identical, if identical, directly invoke the presetting bit, will focusing position adjustment to presetting bit position, The presetting bit identical direction if it is different, then the position that will first focus is transferred to and is called, then recalls presetting bit, by position of focusing Put and be adjusted to presetting bit position.
- 2. the antidote of focal position according to claim 1, it is characterised in that：It is transferred to by focusing position with being adjusted During with the process of presetting bit equidirectional, the threshold value that a size is 2 ~ 3 times of lens focusing gap used is set first, and the threshold value is just Be adjustment focusing position to the stroke size with called presetting bit equidirectional side, will be focused position according to the threshold value afterwards It is transferred to the position with called presetting bit equidirectional.
- 3. the antidote according to claim 1 for focusing on presetting bit, it is characterised in that：Represented using flag bit 1 near To a distant place to presetting bit, represented using flag bit 0 from the presetting bit as far as nearly direction.
- 4. the antidote according to claim 1 for focusing on presetting bit, it is characterised in that：When calling presetting bit, if Put an offset, the offset by 0.2 ~ 0.3 times of calling presetting bit numerical values recited, according to presetting bit and offset and/or Difference will focusing position adjustment to presetting bit position.
- 5. the antidote according to claim 1 for focusing on presetting bit, it is characterised in that：When calling presetting bit, if in advance Set is from closely to a distant place to the direction of current focusing position being judged below, if current location is in nearside, that is, position of focusing Direction adjusts near to far, and it is preset then to directly invoke this with setting direction during presetting bit identical for the focusing direction for position of focusing Position, by focusing position adjustment to presetting bit position；If nearside is transferred in current location in distal side, the position that will first focus, Then judge whether focusing position has reached nearside really again, if it has been reached, presetting bit is called, if do not reached, after Continuous adjustment focusing position to nearside and is judged whether to reach really.
- 6. the antidote according to claim 1 for focusing on presetting bit, it is characterised in that：When calling presetting bit, if From the presetting bit as far as nearly direction, then it is all in distal side to judge current location, if in distal side, directly invokes the presetting bit； If it is not, then existing be transferred to distal side by focusing position, then judge whether to have reached distal side really, if it has been reached, calling Presetting bit, if do not reached, continue adjustment focusing position to distal side and judged whether to reach really.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710984305.4A CN107664805B (en) | 2017-10-20 | 2017-10-20 | Correction method for focusing preset position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710984305.4A CN107664805B (en) | 2017-10-20 | 2017-10-20 | Correction method for focusing preset position |
Publications (2)
| Publication Number | Publication Date |
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| CN107664805A true CN107664805A (en) | 2018-02-06 |
| CN107664805B CN107664805B (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710984305.4A Active CN107664805B (en) | 2017-10-20 | 2017-10-20 | Correction method for focusing preset position |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110753172A (en) * | 2019-10-22 | 2020-02-04 | Oppo广东移动通信有限公司 | Correction method and device, electronic equipment and voice coil motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901704A (en) * | 2014-03-21 | 2014-07-02 | 天津市亚安科技股份有限公司 | Pan-tilt and presetting bit recall control method of pan-tilt |
| CN104079883A (en) * | 2014-07-07 | 2014-10-01 | 山东神戎电子股份有限公司 | Laser night-vision device illuminator presetting bit implementation method based on stepping motor |
| US20150288936A1 (en) * | 2014-04-04 | 2015-10-08 | Samsung Electronics Co., Ltd. | Method and apparatus for controlling focus of projector of portable terminal |
| CN106657790A (en) * | 2016-12-30 | 2017-05-10 | 山东神戎电子股份有限公司 | Laser night-vision device with preset position compensation function and preset position compensation method |
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2017
- 2017-10-20 CN CN201710984305.4A patent/CN107664805B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901704A (en) * | 2014-03-21 | 2014-07-02 | 天津市亚安科技股份有限公司 | Pan-tilt and presetting bit recall control method of pan-tilt |
| US20150288936A1 (en) * | 2014-04-04 | 2015-10-08 | Samsung Electronics Co., Ltd. | Method and apparatus for controlling focus of projector of portable terminal |
| CN104079883A (en) * | 2014-07-07 | 2014-10-01 | 山东神戎电子股份有限公司 | Laser night-vision device illuminator presetting bit implementation method based on stepping motor |
| CN106657790A (en) * | 2016-12-30 | 2017-05-10 | 山东神戎电子股份有限公司 | Laser night-vision device with preset position compensation function and preset position compensation method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110753172A (en) * | 2019-10-22 | 2020-02-04 | Oppo广东移动通信有限公司 | Correction method and device, electronic equipment and voice coil motor |
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| CN107664805B (en) | 2020-10-16 |
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