CN203786047U - Prismatic lens detecting device - Google Patents
Prismatic lens detecting device Download PDFInfo
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- CN203786047U CN203786047U CN201420010861.3U CN201420010861U CN203786047U CN 203786047 U CN203786047 U CN 203786047U CN 201420010861 U CN201420010861 U CN 201420010861U CN 203786047 U CN203786047 U CN 203786047U
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- prismatic lens
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- linear light
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- 239000012528 membrane Substances 0.000 abstract description 2
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- 230000000295 complement effect Effects 0.000 description 2
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- 239000004065 semiconductor Substances 0.000 description 2
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- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Abstract
The utility model discloses a prismatic lens detecting device. A prismatic lens is provided with a first surface and a second surface opposite to the first surface, wherein a plurality of prism columns are arranged on the first surface; the prism columns are provided with extending directions; the detecting device comprises a linear light source, a linear image sensor and an image processing unit. The linear light source is used for producing a plurality of light rays and projecting the light rays to the second surface of the prism lens, wherein the light rays are emitted from the first surface to form a detecting bright zone on the first surface; the linear light source is provided with a long shaft which is not vertical to the extending direction of the prism columns. A light sensing area of the linear image sensor is aligned to a luminous zone of the linear light source and used for receiving a detected image obtained from the detecting bright zone. The image processing unit and the linear image sensor are in signal connection, wherein the image processing unit is used for judging whether the detecting bright zone have defects or not according to the detected image. The detecting device disclosed by the utility model can be used for detecting defects on the surface of an optical membrane sheet by utilizing the setting of the linear light source and the linear image sensor.
Description
Technical field
The utility model relates to a kind of pick-up unit of blooming piece, refers to especially to detect the pick-up unit of prismatic lens defect.
Background technology
Blooming piece has been widely used in the every product of daily life now.In addition, blooming piece is also used in the backlight module of liquid crystal display, in order to increase picture brightness uniformity, improve display brightness and to reduce lines optical defect.Therefore,, for the display quality of display, the quality of blooming piece has critical influence power.
In the manufacturing process of blooming piece, blooming piece surface may produce the defects such as scratch, concave point, salient point, foaming or dirty point.When the defective blooming piece of tool is used in display, may cause harmful effect to the display quality of display.Therefore, after blooming piece completes, must first to blooming piece, detect, with the situation of viewing optics membrane surface defect distribution, more accordingly the quality of blooming piece be carried out to classification.
Utility model content
The utility model provides the pick-up unit of blooming piece, and it utilizes the setting of linear light sorurce and linear imaging sensor, can detect the defect on blooming piece surface.
A utility model wherein embodiment provides a kind of prismatic lens pick-up unit, prismatic lens has a first surface and a second surface relative with first surface, wherein on first surface, there are many prism columns, this prism columns has a bearing of trend, and wherein pick-up unit comprises linear light sorurce, linear imaging sensor and graphics processing unit.Linear light sorurce in order to produce many light and by ray cast the second surface to prismatic lens, and penetrated by first surface, to form a detection clear zone on first surface, wherein linear light sorurce has a major axis, and major axis and the bearing of trend out of plumb of prism columns not.The luminous zone of linear light sorurce is aimed in the optical sensing area of linear imaging sensor, and in order to from obtaining a detected image by detecting clear zone.Graphics processing unit is set up signal with this linear imaging sensor and is connected, and wherein graphics processing unit judges according to detected image whether detect clear zone occurs defect.
Further, prismatic lens pick-up unit also comprises a conveying mechanism, and conveying mechanism is in order to be sent to prismatic lens between linear light sorurce and linear imaging sensor.
Further, linear imaging sensor and linear light sorurce coaxially arrange.
Further, the optical sensing area of linear imaging sensor is dropped in the luminous zone of linear light sorurce.
Further, an orientation of prism columns and the formed angle of major axis are between 25 degree to 45 degree.
Further, major axis is parallel with bearing of trend.
The prismatic lens pick-up unit that the utility model embodiment provides, by the Luminance Distribution in analyzing and testing district, can learn whether prismatic lens surface has the defects such as scratch or stain.
In order further to understand the utility model, be technology, method and the effect of reaching, refer to following relevant detailed description of the present utility model, graphic, believe feature of the present utility model, when being goed deep into thus and concrete understanding, yet appended graphic and annex only provide with reference to and explanation use, be not used for the utility model to be limited.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of the prismatic lens pick-up unit of the utility model embodiment.
Fig. 2 A shows the linear light sorurce of the utility model embodiment and the relative position schematic diagram that linear imaging sensor detects prismatic lens.
Schematic diagram is looked at the end of Fig. 2 B demonstration Fig. 2 A.
[symbol description]
Prismatic lens pick-up unit 1
Conveying mechanism 10
Delivery wheel 100
Conveying belt 101
Linear light sorurce 11
Luminous zone 110
Linear imaging sensor 12
Graphics processing unit 13
Prismatic lens 2
First surface 2a
Second surface 2b
Prism columns 21
Bearing of trend D1
Orientation Y
Major axis D2
Light L
Refracted ray L1
Chief ray L2
Detect clear zone A
Throughput direction I
Embodiment
Please refer to Fig. 1, show the schematic diagram of the prismatic lens pick-up unit of the utility model embodiment.The prismatic lens pick-up unit 1 of the utility model embodiment can be used to detect prismatic lens 2 and whether has the defects such as scratch, stain or sags and crests.Prismatic lens pick-up unit 1 has conveying mechanism 10, linear light sorurce 11, linear imaging sensor 12 and graphics processing unit 13.
In the utility model embodiment, conveying mechanism 10 is in order to be delivered to product to be tested position to be measured.The product to be tested of the utility model embodiment is blooming piece, and more specifically, product to be tested is prismatic lens 2.In one embodiment, conveying mechanism 10 can comprise delivery wheel 100 and conveying belt 101, and wherein conveying belt 101 is sheathed on delivery wheel 100, and is used for carrying prismatic lens 2.The rotation of delivery wheel 100 can driving conveying belt 101, and prismatic lens 2 is sent to position to be measured.
In the utility model embodiment, prismatic lens 2 has first surface 2a and the second surface 2b relative with first surface 2a, and wherein second surface 2b is incidence surface, and first surface 2a is exiting surface.In the utility model embodiment, first surface 2a has prism structure, and second surface 2b is flat surfaces.
Linear light sorurce 11 and linear imaging sensor 12 are arranged at respectively the opposition side of conveying mechanism 10.In the utility model embodiment, linear light sorurce 11 is arranged at conveying mechanism 10 belows, and linear imaging sensor 12 is arranged at conveying mechanism 10 tops.In other embodiments, linear light unit 11 also can exchange with the position of linear imaging sensor 12.
Linear light sorurce 11 has a luminous zone 110, in order to produce many light L.Specifically, interior a plurality of light emitting diodes (not shown) and the collector lens (not shown) of arranging in luminous zone 110.These light emitting diodes become matrix to arrange, and collector lens further converges in order to the light beam that light emitting diode is produced, and while making these light L project on prismatic lens 2, form a light belt.
Linear imaging sensor 12 can be line style charge coupled sensor (Charge Coupled Device, CCD) or line style complementary metal oxide semiconductor (complementary metal-oxide-semiconductor, CMOS) sensor.Linear imaging sensor 12 arranges over against linear light sorurce 11, and the luminous zone 110 of linear light sorurce 11 is aimed in the optical sensing area of linear imaging sensor 12.In another embodiment, the optical sensing area of linear imaging sensor 12 can be dropped in luminous zone 110.That is to say, the chief ray that linear light sorurce 11 sends can incide optical sensing area.When prismatic lens 2 is not sent between linear imaging sensor 12 and linear light sorurce 11, linear imaging sensor 12 can get the image of luminous zone 110.In another embodiment, linear imaging sensor 12 is coaxial settings with linear light sorurce 10.
When 1 pair of prismatic lens 2 of pick-up unit detects, conveying mechanism 10 transmits prismatic lens 2 towards the throughput direction shown in arrow I, makes prismatic lens 2 by between linear light sorurce 11 and linear imaging sensor 12.During detection, the relevant position of linear light sorurce 11, prismatic lens 2 and linear imaging sensor 12 further illustrates as follows.
Please refer to Fig. 2 A and Fig. 2 B.Fig. 2 A shows linear light sorurce and linear imaging sensor and prismatic lens relative position schematic diagram.Schematic diagram is looked at the end of Fig. 2 B demonstration Fig. 2 A.Need first illustrate, in Fig. 2 A and Fig. 2 B and not shown conveying mechanism 10.Prismatic lens 2 comprises many prism columns arranged side by side 21, and these prism columns 21 of the present embodiment have an orientation Y, and each prism columns 21 has bearing of trend D1.In the utility model embodiment, orientation Y and bearing of trend D1 can be mutually vertical, and the bearing of trend D1 out of plumb of the major axis D2 of linear light sorurce 11 and prism columns 21.In other words, the major axis D2 of linear light sorurce 11 and orientation Y are not parallel.In one embodiment, the angle theta of major axis D2 and orientation Y drops between the scope of 25 degree to 45 degree.In another embodiment, major axis D2 is and bearing of trend D1 almost parallel.
Yet in other embodiments, the bearing of trend D1 of prism columns 21 is not necessarily mutually vertical with orientation Y.Now, the major axis D2 of linear light sorurce 11 can with orientation Y almost parallel.
Please refer to Fig. 2 A, in the time of between prismatic lens 2 is by linear light sorurce 11 and linear image sensing cell 12, linear light sorurce 11 produces light L, is projected to the second surface 2b of prismatic lens 2, and forms and detect clear zone A at first surface 2a.In one embodiment, linear imaging sensor 12 coaxially arranges with linear light sorurce 11, so the trend of linear imaging sensor 12 formed detection clear zone A on prismatic lens 2 and the major axis D2 almost parallel of linear light sorurce 11.That is to say, detect also out of plumb of the trend of clear zone A and the bearing of trend D1 of prism columns 21.
Referring again to Fig. 1, when the prism structure of prismatic lens 2 does not have defect, after these light L reflects by prism structure, can form refracted ray L1 and chief ray (main light) L2 and penetrate.Specifically, light L, by the second surface 2b incident of prismatic lens 2, when reflecting and being penetrated by first surface 2a through prismatic lens 2, forms refracted ray L1 and chief ray L2.Aforementioned linear light sorurce 11 and linear imaging sensor 12 are with respect to the set-up mode of prismatic lens 2, in the time of can making refracted ray L1 by the surperficial outgoing of prismatic lens 2, can't be received by linear imaging sensor 12, and chief ray L2 can be received by linear imaging sensor 12.That is to say, refracted ray L1 can be refracted into outside the optical sensing area of linear imaging sensor 12, cannot be obtained and imaging by linear imaging sensor 12.
For example, when the first surface 2a of prismatic lens 2 has defect: scratch, can be destroyed at the prism structure at place, defect place, cannot be by deviation outside the optical sensing area of linear imaging sensor 12 by the first refractive light L1 of defect place place outgoing.Therefore, refracted ray L1 can be received by linear imaging sensor 12 jointly with chief ray L2, thereby causes the brightness value that linear imaging sensor 12 senses to increase.In like manner, when the first surface 2a of prismatic lens 2 has stain, refracted ray L1 and chief ray L2 all cannot be from the surperficial outgoing by stain covered, and can make the brightness value that linear imaging sensor 12 senses decline.
Graphics processing unit 13 is set up signal with linear imaging sensor 12 and is connected, and wherein linear imaging sensor 12 receives by the light that detects the outgoing of clear zone A institute, and obtains a detected image from detecting clear zone A, is sent to graphics processing unit 13 and analyzes.Graphics processing unit 13 can be a digital signal processor (Digital Signal Processor, DSP), the Luminance Distribution that it can analyzing and testing image, and judge according to the brightness value in detected image whether detect clear zone A occurs defect.
In the present embodiment, graphics processing unit 13 can store a standard value range.When graphics processing unit 13 receives detected image, the brightness value of each pixel in detected image and standard value range can be compared.When pixel brightness value be greater than standard value range upper in limited time graphics processing unit 13 can be differentiated and at this place, has concave point defect and exist, and when pixel brightness value lower than standard value range lower in limited time, graphics processing unit 13 can be differentiated at this place may have particulate to adhere to.
In sum, the prismatic lens pick-up unit of the utility model embodiment can detect prismatic lens surface and whether have defect, and can roughly determine the kind of defect, and further improved process conditioned disjunction environment.Specifically, coaxial linear light sorurce and the linear imaging sensor of prismatic lens pick-up unit utilization of the utility model embodiment detects prismatic lens, and avoid making the major axis of linear light sorurce and the bearing of trend of prism columns vertical.So, can make linear imaging sensor not receive the light being reflected by prism columns as far as possible.While having the defects such as scratch or concave point to exist when prismatic lens surface, prism columns cannot refracted ray, and light is directly received by linear imaging sensor.Therefore,, in the detected image that linear imaging sensor obtains, the brightness meeting at place, defect place is higher than the brightness in other regions.
Although the utility model discloses as above with preferred embodiment; yet it is not in order to limit the utility model, and any those of ordinary skill in the art, within not departing from spirit and scope of the present utility model; the equivalence of doing to change with retouching is replaced, and is still in scope of patent protection of the present utility model.
Claims (6)
1. a prismatic lens pick-up unit, described prismatic lens has a first surface and a second surface relative with described first surface, has many prism columns on wherein said first surface, and described prism columns has a bearing of trend, it is characterized in that, described pick-up unit comprises:
One linear light sorurce, in order to produce many light and the described second surface to described prismatic lens by described ray cast, and penetrated by described first surface, to form a detection clear zone on described first surface, wherein said linear light sorurce has a major axis, and described major axis is not vertical with the bearing of trend of described prism columns;
One linear imaging sensor, the luminous zone of described linear light sorurce is aimed in the optical sensing area of described linear imaging sensor, and in order to obtain a detected image from described detection clear zone; And
One graphics processing unit, described graphics processing unit is set up signal with described linear imaging sensor and is connected, and wherein said graphics processing unit judges according to described detected image whether described detection clear zone occurs defect.
2. prismatic lens pick-up unit according to claim 1, is characterized in that, described prismatic lens pick-up unit also comprises a conveying mechanism, and described conveying mechanism is in order to be sent to described prismatic lens between described linear light sorurce and described linear imaging sensor.
3. prismatic lens pick-up unit according to claim 1, is characterized in that, described linear imaging sensor and described linear light sorurce coaxially arrange.
4. prismatic lens pick-up unit according to claim 1, is characterized in that, the optical sensing area of described linear imaging sensor is dropped in the luminous zone of described linear light sorurce.
5. prismatic lens pick-up unit according to claim 1, is characterized in that, an orientation of described prism columns and the formed angle of described major axis are between 25 degree to 45 degree.
6. prismatic lens pick-up unit according to claim 1, is characterized in that, described major axis is parallel with described bearing of trend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420010861.3U CN203786047U (en) | 2014-01-08 | 2014-01-08 | Prismatic lens detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420010861.3U CN203786047U (en) | 2014-01-08 | 2014-01-08 | Prismatic lens detecting device |
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| Publication Number | Publication Date |
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| CN203786047U true CN203786047U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420010861.3U Expired - Lifetime CN203786047U (en) | 2014-01-08 | 2014-01-08 | Prismatic lens detecting device |
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| CN (1) | CN203786047U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767468A (en) * | 2016-12-29 | 2017-05-31 | 贵州虹轴轴承有限公司 | A kind of bearing ring outer wall accuracy detecting device |
| CN106839978A (en) * | 2016-12-29 | 2017-06-13 | 贵州虹轴轴承有限公司 | A kind of bearing ring outer wall precision measurement and detection device |
-
2014
- 2014-01-08 CN CN201420010861.3U patent/CN203786047U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767468A (en) * | 2016-12-29 | 2017-05-31 | 贵州虹轴轴承有限公司 | A kind of bearing ring outer wall accuracy detecting device |
| CN106839978A (en) * | 2016-12-29 | 2017-06-13 | 贵州虹轴轴承有限公司 | A kind of bearing ring outer wall precision measurement and detection device |
| CN106767468B (en) * | 2016-12-29 | 2019-03-01 | 贵州虹轴轴承有限公司 | A kind of bearing ring outer wall accuracy detecting device |
| CN106839978B (en) * | 2016-12-29 | 2019-04-19 | 贵州虹轴轴承有限公司 | A kind of bearing ring outer wall precision measurement and detection device |
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Granted publication date: 20140820 |
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| CX01 | Expiry of patent term |