CN209089102U - A kind of device for using polarizing film control brightness of image - Google Patents
A kind of device for using polarizing film control brightness of image Download PDFInfo
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- CN209089102U CN209089102U CN201822109895.9U CN201822109895U CN209089102U CN 209089102 U CN209089102 U CN 209089102U CN 201822109895 U CN201822109895 U CN 201822109895U CN 209089102 U CN209089102 U CN 209089102U
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- analyzer
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- polarizer
- rotary table
- electronically controlled
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- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 description 5
- 238000005286 illumination Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The utility model discloses a kind of devices for using polarizing film control brightness of image.The polarizer is fixed in front of camera, and analyzer is arranged between the polarizer and camera, and analyzer is installed on electronically controlled rotary table, drives analyzer to rotate around center by electronically controlled rotary table；Electronically controlled rotary table connects controllor for step-by-step motor, and the polarizer, analyzer and camera are sequentially arranged with optical axis, and the position of the polarizer, analyzer and camera on optical axis is fixed；Electronically controlled rotary table is built-in with stepper motor, and stepper motor output shaft connects analyzer center, and stepper motor operation drives analyzer to rotate around center.The utility model can be used to combine the brightness of polarizing film control image, simple and effective.
Description
Technical field
The utility model relates to the control devices of camera acquisition brightness of image, and in particular to one kind is for using polarizing film control
The device of drawing image brightness.
Background technique
In image acquisition process, the variation of light environment easily leads to brightness of image deficiency or brightness is excessively high, and the later period is given to scheme
As processing brings difficulty.
For the illumination in control the visual field, (Shen Yang Menglin magneto-optic dual control color changing eye protector for welder Chinese patent CN2143974
Please number: 932026249, applying date: 1993.01.30) disclose a kind of automatic " blend-stop " goggles for electric welding with magnetic and optical controls, by right
Electromagnetic wave and arclight before electric arc generation are handled, to control the luminous flux of goggles.Chinese patent CN2676873
(Chen Biao electronics automatic color-changing electric welding protective mask application number: 2003201214217 applyings date: 2003.12.31) discloses one
Kind electronics automatic color-changing electric welding protective mask is arranged the voltage signal detection unit connecting with its output end in electric welding pusher side, adopts
The output voltage of electric welding machine is used to change the control signal changed as liquid crystal lens translucency.
These patents do not adapt to accurately control in image imaging system based on experiencing the control of field luminance with human eye
The needs of intensity of illumination.
Utility model content
In order to solve the problems, such as accurately to control intensity of illumination present in background technique, the utility model provides one kind and adopts
With the device of polarizing film control camera acquired image brightness, is adjusted the angle using polarizing film and realize the bright of camera acquisition image
Degree control.
The utility model institute using technical solution includes:
Device includes controllor for step-by-step motor, the polarizer, analyzer, electronically controlled rotary table and camera；The polarizer is fixed on phase
In front of machine, analyzer is arranged between the polarizer and camera, and analyzer is installed on electronically controlled rotary table, is driven by electronically controlled rotary table
Analyzer is rotated around center；Electronically controlled rotary table connects controllor for step-by-step motor.The polarizer, analyzer and camera are same
Optical axis is sequentially arranged, and the position of the polarizer, analyzer and camera on optical axis is fixed.
The electronically controlled rotary table is built-in with stepper motor, and stepper motor output shaft connects analyzer center, stepper motor
Operation drives analyzer to rotate around center.
The stepper motor connects controllor for step-by-step motor, and computer issues control signal via controllor for step-by-step motor control
The rotation of stepper motor processed.
The polarizer, analyzer are linear polarizer.
It further include computer, controllor for step-by-step motor and camera are all connected to computer.
The camera uses Mars 2000-50gc type USB camera.
The beneficial effects of the utility model are:
The utility model, can be very well using the brightness of Brewster's angle (Brewster angle, the angle of polarization) adjustment image
The brightness of image is controlled, it is simple and effective.
Detailed description of the invention
Fig. 1 is schematic device.
Fig. 2 is the utility model light path principle schematic diagram.
In figure: 1, controllor for step-by-step motor, 2, the polarizer, 3, analyzer, 4, electronically controlled rotary table, 5, camera, 6, computer.
Specific embodiment
The utility model is further described in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, the device of the utility model specific implementation includes controllor for step-by-step motor 1, the polarizer 2, analyzer
3, electronically controlled rotary table 4, camera 5 and computer 6；The polarizer 2 is fixed on 5 front of camera, and analyzer 3 is arranged in the polarizer 2 and camera 5
Between, and analyzer 3 is installed on electronically controlled rotary table 4, drives analyzer 3 to rotate around center by electronically controlled rotary table 4；Automatically controlled rotation
Turntable 4 is built-in with stepper motor, and stepper motor output shaft connects 3 center of analyzer, and stepper motor operation drives analyzer 3 around certainly
The rotation of body center.
As shown in Figure 1, electronically controlled rotary table 4 connects controllor for step-by-step motor 1, controllor for step-by-step motor 1 and camera 5 are all connected with
To computer 6, stepper motor connects controllor for step-by-step motor 1, and computer 6 issues control signal and controls via controllor for step-by-step motor 1
The rotation of stepper motor, and camera image is acquired simultaneously.
The polarizer 2, analyzer 3 are linear polarizer, and the polarizer 2, analyzer 3 and camera 5 are sequentially arranged with optical axis, are polarized
The position of device 2, analyzer 3 and camera 5 on optical axis is fixed.As shown in Fig. 2, extraneous available light successively penetrates 2 He of the polarizer
Camera 5 is incident on after analyzer 3.Linearly polarized light A1, linearly polarized light A1 warp are specifically obtained after the polarizer 2 from the light that the external world comes
Analyzer 3 obtains linearly polarized light A2, and linearly polarized light A2 enters the imaging of camera 5.In imaging, difference adjustment analyzer 3 can be formed not
Same Brewster's angle θ, the brightness of image that Brewster's angle θ can bring camera 5 different, by adjusting the different polarizers 2 and inspection
Brewster's angle θ between inclined device 3 is arranged and then is realized brightness of image adjustment.
Above-mentioned specific embodiment is used to illustrate the utility model, rather than limits the utility model,
In the spirit and scope of protection of the claims of the utility model, to any modifications and changes that the utility model is made, all fall
Enter the protection scope of the utility model.
Claims (5)
1. it is a kind of for using polarizing film control brightness of image device, it is characterised in that: including controllor for step-by-step motor (1),
The polarizer (2), analyzer (3), electronically controlled rotary table (4) and camera (5)；The polarizer (2) is fixed in front of camera (5), analyzer
(3) it is arranged between the polarizer (2) and camera (5), and analyzer (3) is installed on electronically controlled rotary table (4), by electronically controlled rotary table
(4) analyzer (3) are driven to rotate around center；Electronically controlled rotary table (4) connects controllor for step-by-step motor (1)；The polarizer (2),
Analyzer (3) and camera (5) are sequentially arranged with optical axis, and the position of the polarizer (2), analyzer (3) and camera (5) on optical axis is solid
It is fixed.
2. a kind of device for using polarizing film control brightness of image according to claim 1, it is characterised in that: described
Electronically controlled rotary table (4) be built-in with stepper motor, stepper motor output shaft connects analyzer (3) center, and stepper motor runs band
Dynamic analyzer (3) are rotated around center.
3. a kind of device for using polarizing film control brightness of image according to claim 2, it is characterised in that: described
Stepper motor connect controllor for step-by-step motor (1), by controllor for step-by-step motor (1) control stepper motor rotation.
4. a kind of device for using polarizing film control brightness of image according to claim 1, it is characterised in that: described
The polarizer (2), analyzer (3) be linear polarizer.
5. a kind of device for using polarizing film control brightness of image according to claim 1, it is characterised in that: also wrap
It includes computer (6), controllor for step-by-step motor (1) and camera (5) are all connected to computer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822109895.9U CN209089102U (en) | 2018-12-14 | 2018-12-14 | A kind of device for using polarizing film control brightness of image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822109895.9U CN209089102U (en) | 2018-12-14 | 2018-12-14 | A kind of device for using polarizing film control brightness of image |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209089102U true CN209089102U (en) | 2019-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822109895.9U Active CN209089102U (en) | 2018-12-14 | 2018-12-14 | A kind of device for using polarizing film control brightness of image |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209089102U (en) |
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2018
- 2018-12-14 CN CN201822109895.9U patent/CN209089102U/en active Active
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