CN106773103B - A kind of zoom lens focal plane position fast determination method - Google Patents
A kind of zoom lens focal plane position fast determination method Download PDFInfo
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- CN106773103B CN106773103B CN201611047388.6A CN201611047388A CN106773103B CN 106773103 B CN106773103 B CN 106773103B CN 201611047388 A CN201611047388 A CN 201611047388A CN 106773103 B CN106773103 B CN 106773103B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/62—Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
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- Optics & Photonics (AREA)
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Abstract
The present invention proposes a kind of zoom lens focal plane position fast determination method, first has to determine lens focusing direction, and focusing position is placed on distalmost end, as debugging starting point；By camera lens zoom to maximum field of view, imaging sensor front-rear position is adjusted, shows that target source clearly；After big view field image is clear, then by camera lens zoom to minimum visual field, adjustment focusing position makes image clearly under small field of view state；Then again by zoom lens zoom to maximum field of view, if each visual field target source shows clear, imaging sensor front-rear position adjustment completion during zoom；Otherwise repeat the above process, until zoom whole process in each visual field target source show it is clear.Method provided by the invention is suitable for the VISIBLE LIGHT SYSTEM of institute's some need adjustment imaging surface position and the ray machine adjustment of infrared system, is widely used, practical, is able to achieve the quick determination of imaging surface position, guarantees assembling quality, working efficiency significantly improves.
Description
Technical field
The present invention relates to ray machine mounting technology field, specially a kind of zoom lens focal plane position fast determination method.
Background technique
In TV ray machine adjustment field, in adjustment ccd image sensor, often by the sense of ccd image sensor
Smooth surface is adjusted on the focal plane of continuous magnification lens, and continuous magnification lens guarantee the focal plane position in zooming procedure in design
Set it is constant, but focal plane can with focusing change in location and be moved forward and backward, different distance object to be imaged.
When only target position, focusing position, ccd sensor position three are adjusted to specific relationship, mirror just can guarantee
Image clearly is always maintained at when zoom when head is to the image objects of different distance.If ccd image sensor position is not right, or
Adjust ccd image sensor position when focusing position it is not right, will lead to camera lens when zooming image can not be always maintained at clearly,
Actual use mid-focal length, which needs to install additional control circuit board synchronous zoom when changing, makes image clearly, keeps system more complicated and influences
Resolution of lens, or even the focal length section distance object having can not all focus clearly always, seriously affect using effect.Existing debugging
Method is fairly simple, is all that focusing position and ccd image sensor position are constantly moved forward and backward trial, needs adjustment repeatedly, consume
Duration, and different surely reach design requirement.
Summary of the invention
In order to solve the problems existing in the prior art, the present invention proposes a kind of zoom lens focal plane position quickly determination side
Method is widely used suitable for the VISIBLE LIGHT SYSTEM of institute's some need adjustment imaging surface position and the ray machine adjustment of infrared system, real
It is strong with property, it is able to achieve the quick determination of imaging surface position, guarantees assembling quality, working efficiency significantly improves.
The technical solution of the present invention is as follows:
A kind of zoom lens focal plane position fast determination method, it is characterised in that: the following steps are included:
Step 1: assembling zoom lens and imaging sensor, and by after assembling zoom lens and imaging sensor be placed on
Before parallel light tube with target source；
Step 2: adjusting the relative position of zoom lens and parallel light tube, keep zoom lens optical axis and parallel light tube optical axis flat
Row, and target source is imaged, imaging is shown over the display by imaging sensor；
Step 3: determining the focusing direction of zoom lens；Zoom lens is focused to distal end, and target source is imaged；
Step 4: zoom lens zoom to maximum field of view obscuring if target source is shown, adjusts imaging sensor front and back
Position shows that target source clearly；
Step 5: by zoom lens zoom to minimum visual field, being obscured if target source is shown, zoom lens is proximally adjusted
Coke shows that target source clearly；
Step 6: by zoom lens zoom to maximum field of view, if during zoom each visual field target source show it is clear,
Then imaging sensor front-rear position adjustment is completed；Otherwise step 4 and step 5 are repeated, until each visual field target in zoom whole process
Source shows clear.
Further preferred embodiment, a kind of zoom lens focal plane position fast determination method, it is characterised in that: figure
As sensor includes Visible-light CCD, CMOS, infrared refrigeration and non-refrigeration type imaging sensor.
Further preferred embodiment, a kind of zoom lens focal plane position fast determination method, it is characterised in that: become
Zoom lens include visible light, infrared, ultraviolet zoom camera lens.
Beneficial effect
Zoom lens focal plane position fast determination method provided by the invention is suitable for institute's some need and adjusts imaging surface
The VISIBLE LIGHT SYSTEM of position and the ray machine adjustment of infrared system, are widely used, practical, are able to achieve the quick of imaging surface position
It determines, guarantee assembling quality, working efficiency significantly improves.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is apparatus structure schematic diagram used in the embodiment of the present invention；
Fig. 2 is Visible Light Camera structure chart in the embodiment of the present invention；
Cross shown over the display is as image when Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) are different visual fields.
Wherein: 1, the parallel light tube with cross target source；2, adjusting bracket；3, zoom lens；4, ccd image sensor；
5, display；6, focusing motor；7, zoom motor.
Specific embodiment
The embodiment of the present invention is described below in detail, the embodiment is exemplary, it is intended to it is used to explain the present invention, and
It is not considered as limiting the invention.
The equipment that zoom lens focal plane position fast determination method provided in this embodiment is wherein used has: a band ten
The parallel light tube of word target source, an adjustment bracket, a Zoom camera and its display equipment.Zoom lens focal plane position
The structural schematic diagram of the device that fast determination method uses as shown in Figure 1, Zoom lens structure and its to cross target source not
With imaging under focal length as shown in Fig. 2 and Fig. 3 (a), Fig. 3 (b), Fig. 3 (c), zoom lens focal plane position fast determination method tool
Steps are as follows for body:
1, prepare a parallel light tube 1 with cross target source first, zoom lens 3 and ccd image sensor 4 are assembled
In adjusting bracket 2 before being placed on parallel light tube 1 afterwards, as shown in Figure 1.
2, the relative position that zoom lens 3 and parallel light tube 1 are adjusted by adjusting bracket 2 makes fixation in adjusting bracket 2
Zoom lens optical axis is parallel with parallel light tube optical axis and cross target source is imaged, and will be formed by ccd image sensor 4
On display 5 as display.
3, as shown in Fig. 2, the focusing motor 6 to zoom lens 3 is powered, camera lens distance focusing direction is determined, by camera lens tune
Burnt position is placed on distalmost end, is imaged as debugging starting point, and to cross target source, image would generally fog unclear at this time.
4, as shown in Fig. 2, the zoom motor 7 to zoom lens 3 is powered, make zoom lens zoom to maximum field of view, adjustment
4 front-rear position of ccd image sensor enables the cross target on display 5 clearly to show, as shown in Fig. 3 (a).
5, it after big view field image is clear, is powered to zoom motor 7, zoom is to minimum visual field, if cross target picture becomes at this time
It is fuzzy, then it is powered to focusing motor 6, adjustment focusing position keeps cross image again clear, as shown in Fig. 3 (c).
6, zoom is to maximum field of view again, if each visual field cross imaging is clear always during zoom, ccd image is passed
The adjustment of 4 front-rear position of sensor is completed, otherwise repeatedly 4,5 step, until each view of the whole process of the zoom as shown in Fig. 3 (a) and Fig. 3 (c)
Field can be to cross target source blur-free imaging.
Can be seen that the applicable camera lens of the present invention from above-mentioned principle includes the various zoom mirrors such as visible light, infrared, ultraviolet
Head, imaging sensor include Visible-light CCD, CMOS, infrared refrigeration and the various imaging sensors of non-refrigeration type, do not refer to CCD mono- singly
Kind imaging sensor.
Zoom lens focal plane position fast determination method provided by the invention is suitable for institute's some need and adjusts imaging surface
The VISIBLE LIGHT SYSTEM of position and the ray machine adjustment of infrared system, are widely used, practical, are able to achieve the quick of imaging surface position
It determines, guarantee assembling quality, working efficiency significantly improves.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (3)
1. a kind of zoom lens focal plane position fast determination method, it is characterised in that: the following steps are included:
Step 1: assembling zoom lens and imaging sensor, and by after assembling zoom lens and imaging sensor be placed on band mesh
Before the parallel light tube in mark source；
Step 2: the relative position of zoom lens and parallel light tube is adjusted, keeps zoom lens optical axis parallel with parallel light tube optical axis,
And target source is imaged, imaging is shown over the display by imaging sensor；
Step 3: determining the focusing direction of zoom lens；Zoom lens is focused to distal end, and target source is imaged；
Step 4: by zoom lens zoom to maximum field of view, is obscured if target source is shown, adjust imaging sensor front-rear position,
Show that target source clearly；
Step 5: by zoom lens zoom to minimum visual field, being obscured if target source is shown, zoom lens is proximally focused, is made
Target source is shown clearly；
Step 6: zoom lens zoom to maximum field of view if each visual field target source shows clear during zoom, is schemed
As the adjustment of sensor front-rear position is completed；Otherwise step 4 and step 5 are repeated, until each visual field target source is aobvious in zoom whole process
It is clear to show.
2. a kind of zoom lens focal plane position fast determination method according to claim 1, it is characterised in that: image sensing
Device includes Visible-light CCD, CMOS, infrared refrigeration and non-refrigeration type imaging sensor.
3. a kind of zoom lens focal plane position fast determination method according to claim 1, it is characterised in that: zoom lens
Including visible light, infrared, ultraviolet zoom camera lens.
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| CN201611047388.6A CN106773103B (en) | 2016-11-25 | 2016-11-25 | A kind of zoom lens focal plane position fast determination method |
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| CN201611047388.6A CN106773103B (en) | 2016-11-25 | 2016-11-25 | A kind of zoom lens focal plane position fast determination method |
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| CN107707822B (en) * | 2017-09-30 | 2024-03-05 | 苏州凌创电子***有限公司 | Online camera module active focusing equipment and method |
| CN108200424B (en) * | 2017-11-17 | 2020-06-19 | 天津津航技术物理研究所 | Debugging method and system for aligning visual axes of multiple TDI CCD detectors |
| CN110763343A (en) * | 2019-10-30 | 2020-02-07 | 济南和普威视光电技术有限公司 | Refrigeration thermal imager |
| CN115150540B (en) * | 2021-03-30 | 2023-10-24 | 华为技术有限公司 | Shooting method, terminal device and computer readable storage medium |
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| CN104316293A (en) * | 2014-10-17 | 2015-01-28 | 西安应用光学研究所 | Device and method for determining parallelism of continuous zooming television optical axis |
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| CN102445329B (en) * | 2011-09-29 | 2014-03-05 | 中国航空工业集团公司洛阳电光设备研究所 | Rapid determining method for optical axis of continuous zoom lens |
| CN106125246A (en) * | 2016-07-19 | 2016-11-16 | 湖北三江航天红峰控制有限公司 | A kind of from the method seeking laser focal plane |
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