CN104677918B - Detector for CCD image sensor of display screen backlight plate - Google Patents
Detector for CCD image sensor of display screen backlight plate Download PDFInfo
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- CN104677918B CN104677918B CN201510108590.4A CN201510108590A CN104677918B CN 104677918 B CN104677918 B CN 104677918B CN 201510108590 A CN201510108590 A CN 201510108590A CN 104677918 B CN104677918 B CN 104677918B
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- ccd
- ccd image
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- light
- image sensor
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Abstract
The invention discloses a detector for a CCD (Charge Coupled Device) image sensor of a display screen backlight plate. The detector comprises a scanning platform, a mobile CCD image sensing device arranged below the scanning platform and a computer display processor, wherein a scanning element is arranged on the scanning platform; the CCD image sensing device comprises a light source, a reflector set composed of a plurality of reflectors, a lens system and a CCD; the light source adopts a white cold light cathode fluorescent tube; the light emitted by the light source penetrates through the scanning platform and is reflected by the scanning element; the reflector set converts the wide rays of light of the white cold light cathode fluorescent tube into narrow light band; the narrow light band enters the lens system and then is illuminated to the CCD; the CCD is connected with the computer display processor through an A/D converter, so that the defects which cannot be detected by common detectors in the display screen can be detected more clearly. The device is high in detection speed, low in manpower, and nondestructive; the detection result is less influenced by the human factor.
Description
Technical field
The present invention relates to detection technique field, more particularly to one kind are applied to the inspection of display backlight plate CCD image sensors
Survey device.
Background technology
Using the method that existing area array cameras and line-scan digital camera add light source, it is difficult to detect the mobile phone or computer display screen lighted
Dust, cut stain and grey point in interior backlight or glass screen.Because existing method is by brightness, the height for focusing on of light source
The impact of the factors such as degree, visual field, is still the bottleneck for being difficult to break through in detection industry so far.Factory still uses conventional methods,
By organizing a collection of testing staff, solved by estimating, it is so prolonged to observe, there is very major injury to the vision of employee, because
This causes the turnover rate of enterprise staff larger, increased labor cost.Simultaneously testing result is also had a significant impact.
The content of the invention
In order to overcome drawbacks described above, the invention provides one kind can solve the problem that above-mentioned situation, accuracy of detection and effect is improved
The display backlight plate CCD image sensor detection means of rate.
The technical scheme that adopted to solve its technical problem of the present invention is：A kind of display backlight plate CCD images are passed
Sensor detection means, including scanning platform, is arranged at below scanning platform moveable CCD image sensings device and computer is aobvious
Show processor, above scanning platform, the CCD image sensings device is by light source, some speculum groups for the scanning element
Into speculum group, lens combination and CCD composition, the light source be candoluminescence cathode fluorescent tube, the light that the light source sends
After reflecting on scanning element through scanning platform, the wide light of candoluminescence cathode fluorescent tube is converted into into narrow light by speculum group
After band enters lens combination, CCD is finally exposed to, the CCD connects Computer display processor by a/d converter.
As a further improvement on the present invention, in a tubular form, its length is 0-450mm to the CCD image sensings device, and
CCD image sensing devices are set in parallel in the setting of scanning platform scanning direction.The CCD image sensings device of tubulose can be lifted to be swept
The width retouched, can scan any scanning element in 0-450mm sizes.
As a further improvement on the present invention, slide rail, the CCD image sensings device is provided with below the scanning platform
It is slidably mounted on slide rail.
As a further improvement on the present invention, be provided with above the scanning platform place and unload scanning element it is automatic on
Blanking device.
As a further improvement on the present invention, the distance between the CCD image sensings device and scanning element are 2-
3mm.The focal height of CCD image sensing devices is reduced, the precision of entire scan detection is improved.
The invention has the beneficial effects as follows：The present invention replaces existing area array cameras and linear array using CCD image sensings device
Camera detects that to backlight in display screen the original detection mode of change, after detected element is relatively fixed, using shifting
Dynamic CCD image sensings device carries out the collection of image, can clearly detect the general detection dress existed in display screen
Put the flaw that cannot be detected, this device detection speed is fast, it is artificial less, fanout free region, testing result is affected by human factors little.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Indicate in figure：1- scanning platforms；2-CCD image sensing devices；3- Computer display processors；4- scanning elements；
5- light sources；6- reflecting mirrors；7- lens combinations；8-CCD；9-AD transducers.
Specific embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, should
Embodiment is only used for the explanation present invention, does not constitute limiting the scope of the present invention.
Fig. 1 shows a kind of a kind of embodiment of display backlight plate CCD image sensor detection means of the invention, one
Display backlight plate CCD image sensor detection means is planted, including scanning platform 1, is arranged at below scanning platform 1 movably
CCD image sensings device 2 and Computer display processor 3, the scanning element 4 are located above scanning platform 1, the CCD shadows
Speculum group, lens combination 7 and the CCD8 being made up of light source 5, some reflecting mirrors 6 as sensing device 2 is constituted, the light source 5
For candoluminescence cathode fluorescent tube, after the light transmission scanning platform 1 that the light source 5 sends is reflected on scanning element 4, by reflecting mirror
The wide light of candoluminescence cathode fluorescent tube is converted into narrow light belt into after lens combination 7 by group, finally exposes to CCD8, described
CCD8 connects Computer display processor 10 by a/d converter 9.The lower section of the scanning platform 1 is provided with slide rail, the CCD shadows
As sensing device 2 is slidably mounted on slide rail.It is provided with above the scanning platform 1 and places and unload the automatic of scanning element 4
Handling equipment.In a tubular form, its length is 0-450mm to the CCD image sensings device 2, and CCD image sensings device 2 is parallel
It is arranged at the setting of 1 scanning direction of scanning platform.The distance between the CCD image sensings device 2 and scanning element 4 are 2-3mm.
The operating process of the present embodiment：Light source 5 is irradiated to the light of scanning element 4 and is formed after reflection to be gone up in X direction
Light belt, then after one group of mirror reflection, after being focused on by the optical lenses in lens combination 7, enter back into spectroscope, pass through
Tri- colour light bands of RGB that prism and redgreenblue colour filter in lens combination 7 is obtained are exposed on CCD8 respectively, CCD8
Rgb light band signal is changed into into analog electronic signal, this signal is changed into digital electronic signal by A/D changers again, into meter
Calculation machine video-stream processor 3 carries out display processing.
Claims (5)
1. a kind of display backlight plate CCD image sensor detection means, it is characterised in that：Including scanning platform (1), it is arranged at
Moveable CCD image sensing devices (2) and Computer display processor (3) below scanning platform, scanning element (4) are located at and sweep
Retouch above platform (1), speculum group that CCD image sensings device (2) are made up of light source (5), some reflecting mirrors (6), thoroughly
Mirror system (7) and CCD (8) composition, described light source (5) be candoluminescence cathode fluorescent tube, the light transmission that light source (5) send
After scanning platform (1) is reflected on scanning element (4), the wide light of candoluminescence cathode fluorescent tube is converted into by speculum group narrow
After light belt enters lens combination (7), CCD (8) is finally exposed to, described CCD (8) connect computer by a/d converter (9) and show
Show processor (3).
2. display backlight plate CCD image sensor detection means according to claim 1, it is characterised in that：The CCD
In a tubular form, its length is 0-450mm to image sensing device (2), and CCD image sensing devices (2) is set in parallel in scanning platform
(1) scanning direction is arranged.
3. display backlight plate CCD image sensor detection means according to claim 1, it is characterised in that：It is described to sweep
Retouch and below platform (1), be provided with slide rail, CCD image sensings device (2) are slidably mounted on slide rail.
4. display backlight plate CCD image sensor detection means according to claim 1, it is characterised in that：It is described to sweep
Retouch and above platform (1), be provided with the automatic loading and unloading device placed and unload scanning element (4).
5. display backlight plate CCD image sensor detection means according to claim 1, it is characterised in that：The CCD
The distance between image sensing device (2) and scanning element (4) are 2-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510108590.4A CN104677918B (en) | 2015-03-13 | 2015-03-13 | Detector for CCD image sensor of display screen backlight plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510108590.4A CN104677918B (en) | 2015-03-13 | 2015-03-13 | Detector for CCD image sensor of display screen backlight plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104677918A CN104677918A (en) | 2015-06-03 |
| CN104677918B true CN104677918B (en) | 2017-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510108590.4A Active CN104677918B (en) | 2015-03-13 | 2015-03-13 | Detector for CCD image sensor of display screen backlight plate |
Country Status (1)
| Country | Link |
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| CN (1) | CN104677918B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1026589A (en) * | 1996-07-09 | 1998-01-27 | Nikon Corp | Inspection apparatus for foreign body |
| EP2288902B1 (en) * | 2008-06-05 | 2013-05-22 | Bohle AG | Apparatus for determining the element coverage on a glass surface using fluorescence |
| CN103743748A (en) * | 2013-12-31 | 2014-04-23 | 江苏大学 | Rapid and low-cost machine vision online detection system |
| CN204142641U (en) * | 2014-08-06 | 2015-02-04 | 天津福莱迪科技发展有限公司 | A kind of Mobile phone screen automatic detection device |
| CN204479491U (en) * | 2015-03-13 | 2015-07-15 | 昆山艾尔发计量科技有限公司 | Display backlight plate CCD image sensor pick-up unit |
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2015
- 2015-03-13 CN CN201510108590.4A patent/CN104677918B/en active Active
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| Publication number | Publication date |
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| CN104677918A (en) | 2015-06-03 |
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