CN114563163A - Detection apparatus for leaded light homogeneity - Google Patents
Detection apparatus for leaded light homogeneity Download PDFInfo
- Publication number
- CN114563163A CN114563163A CN202210163007.XA CN202210163007A CN114563163A CN 114563163 A CN114563163 A CN 114563163A CN 202210163007 A CN202210163007 A CN 202210163007A CN 114563163 A CN114563163 A CN 114563163A
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- China
- Prior art keywords
- frame
- detection device
- light guide
- bottom plate
- guide plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
- G01M11/025—Testing optical properties by measuring geometrical properties or aberrations by determining the shape of the object to be tested
Abstract
The invention discloses a detection device for light guide uniformity in the field of optical light guide plate detection, which comprises a bottom plate, wherein a first frame, a second frame and a third frame are respectively arranged on any three edges of the bottom plate, the first frame and the second frame are adjacent and vertical, the third frame is parallel to the first frame, the first frame and the second frame are fixed frames, and the third frame is a movable frame capable of translating along the second frame; the inner walls of the first frame and the second frame are provided with LED light bars, and the detection device further comprises a universal optical module; the detection device can detect optical light guide plates with different sizes, does not need complex matching, and is convenient to use and manage.
Description
Technical Field
The invention relates to the field of optical light guide plate detection, in particular to a detection device for light guide uniformity.
Background
At present, a liquid crystal display occupies most of the market of the display industry, and the liquid crystal display is an electronic display terminal product and mainly comprises a liquid crystal panel, a backlight, a structural member, a circuit control panel and the like. Liquid crystal display is a passive display technology, and a backlight system is required to provide a light source to complete the display. At present, there are two backlight layouts, namely a direct-type backlight layout and a side-type backlight layout, in the side-type backlight, an optical light guide plate needs to be added to realize the turning of light from the horizontal direction to the vertical direction, as shown in fig. 1 in the attached drawings of the specification.
In the side-in type backlight system, the optical light guide plate is generally made of PMMA material, and is etched and printed on a single surface or double surfaces to form a micro prism surface, commonly called a 'mesh point', so that the direction of horizontally transmitted light rays is changed; in the process of turning, the light guide plate may have different light turning capabilities in various regions due to non-uniform distribution of the "dots" or unreasonable prism angles, and finally, the brightness is not uniform on the display surface.
In a special display system, the "brightness uniformity" is generally used as an important index for evaluating the brightness uniformity of each area of the display, for example: the standards of GJB5435-2005 and GJB8187-2015, etc., so the consistency of each region of the light guide plate to the light steering capability is very important in the design development and quality control of the liquid crystal display, and the characteristics of the light guide plate need to be effectively monitored.
The current method which is relatively universal in the display industry is as follows: the manufactured optical light guide plate with the mesh points is arranged in a corresponding product structure, and the brightness value of each area is measured after the optical light guide plate is matched with an optical module, as shown in figures 2, 3 and 4 in the attached drawings of the specification.
However, since the size and the aspect ratio of the liquid crystal display module are large, the optical light guide plates of different products have very different shapes, and the types of the products and modules for matching and detecting are very large, so that the management is complicated.
Therefore, it is urgently needed to provide a detection device for detecting the uniformity of guided light to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a detection device for light guide uniformity, which can detect optical light guide plates with different sizes without complex matching, and is convenient to use and manage.
In order to achieve the above object, the present invention provides a detection apparatus for detecting uniformity of light guiding, including a bottom plate, wherein a first frame, a second frame and a third frame are respectively installed on any three sides of the bottom plate, the first frame and the second frame are adjacent and perpendicular, the third frame and the first frame are parallel to each other, the first frame and the second frame are fixed frames, and the third frame is a movable frame capable of translating along the second frame; the first frame with the LED lamp strip that can select the work area is all installed to the second frame inner wall, detection device still includes general optical module.
Preferably, the second frame is provided with a sliding groove, the third frame is provided with a sliding block, and the sliding block is in sliding fit with the sliding groove.
Preferably, the first frame and the second frame are mounted on the base plate by screws.
Preferably, the bottom plate, the first frame, the second frame and the third frame are all made of aluminum alloy materials.
Preferably, the inner walls of the first frame, the second frame, the third frame and the bottom plate are all coated with diffuse reflection materials.
Preferably, each LED lamp on the LED lamp strip is independently powered.
Preferably, the inner walls of the first frame and the third frame are fixedly provided with positioning plates, and the positioning plates are located below the LED lamp strips.
Preferably, the positioning plate of the first frame is provided with scale marks.
Preferably, the upper surfaces of the first frame and the second frame are flat and coplanar.
According to the technical scheme, the optical light guide plate to be detected is placed into the detection device next to the first frame and the second frame, then the third frame slides to the other side next to the optical light guide plate along the second frame, the working area of the LED lamp strip is selected, the lighting area of the LED lamp strip is enabled to be exactly equal to the side length of the optical light guide plate next to the first frame, then the massive general optical module is placed above the detection device, the optical light guide plate to be detected is covered, and the state of the product module is simulated. The size of the optical light guide plate is obtained according to the size of a designed liquid crystal display screen, and by using the detection device, the optical light guide plates with different sizes can be detected, complex matching is not needed, and the detection device is convenient to use and manage.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of an optical plate for implementing light turning;
FIG. 2 is a schematic view of an optical light guide plate and an LED light bar of a conventional inspection apparatus;
FIG. 3 is a schematic view of FIG. 2 with the optical module installed;
FIG. 4 is a schematic diagram illustrating the detection of light guiding uniformity of the optical light guide plate;
FIG. 5 is a schematic view of the assembly structure of the inspection device and an optical light guide plate to be inspected according to the present invention;
FIG. 6 is a schematic view of the assembly structure of the inspection device and another optical light guide plate to be inspected according to the present invention.
Description of the reference numerals
The LED light guide plate comprises a base plate 1, a first frame 2, a second frame 3, a third frame 4, an LED light bar 5, a sliding groove 6, a sliding block 7, a positioning plate 8, a scale mark 9 and an optical light guide plate 10.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation. The inner side of the invention is the side close to the optical light guide plate to be detected.
As shown in fig. 5 and 6, the present invention provides a detection apparatus for detecting uniformity of light guiding, the detection apparatus includes a bottom plate 1, a first frame 2, a second frame 3 and a third frame 4 are respectively installed on any three sides of the bottom plate 1, the first frame 2 and the second frame 3 are adjacent and perpendicular, the third frame 4 and the first frame 2 are parallel to each other, the first frame 2 and the second frame 3 are fixed frames, and the third frame 4 is a movable frame capable of translating along the second frame 3; LED lamp strip 5 that can select work area is all installed to 3 inner walls of first frame 2 and second frame, and detection device still includes general optical module.
When detecting, at first will wait to examine optical light guide plate 10 and put into detection device near first frame 2 and second frame 3, then slide third frame 4 to near the other one side of optical light guide plate 10 along second frame 3, select the work area of LED lamp strip 5, the interval of lighting that makes LED lamp strip 5 equals approximately exactly that optical light guide plate 10 is near the length of side of first frame 2, then place massive general optical module in detection device top, cover and wait to detect optical light guide plate 10, simulate product module state. The size of the optical light guide plate 10 is obtained according to the size of the designed liquid crystal display screen, and by using the detection device, the optical light guide plates 10 with different sizes can be detected without complex matching, so that the detection device is convenient to use and manage.
In the present embodiment, the second frame 3 is provided with the sliding groove 6, the third frame 4 is provided with the sliding block 7, and the sliding block 7 is in sliding fit with the sliding groove 6 to restrain the third frame 4 from sliding only along the second frame 3.
In the present embodiment, the first frame 2 and the second frame 3 are attached to the chassis 1 by screws, and the first frame 2 and the second frame 3 are prevented from moving and being unable to be brought into close contact with the optical light guide plate 10.
In the present embodiment, the bottom plate 1, the first frame 2, the second frame 3, and the third frame 4 are all made of aluminum alloy, and the aluminum alloy is light in weight and corrosion resistant.
In this embodiment, the inner walls of the first frame 2, the second frame 3, the third frame 4 and the bottom plate 1 are all coated with the diffuse reflection material, so as to prevent the structure other than the optical light guide plate 10 from reflecting the light of the LED light bar 5 to the general optical module.
In the embodiment, each LED lamp on the LED lamp strip 5 is independently powered, preferably by using 3V direct current, and the LED lamps are selected according to the size of the optical light guide plate 10 to be detected to be powered on when in use.
In this embodiment, the locating plate 8 is fixedly mounted on the inner walls of the first frame 2 and the third frame 4, and can be mounted by screws or integrally formed, the locating plate 8 is located below the LED light bar 5, and when the first frame 2 and the third frame 4 are tightly attached to the optical light guide plate 10 to be detected, the locating plate 8 is used for clamping the optical light guide plate 10 to be detected, so that the distance between the LED light bar 5 and the optical light guide plate 10 to be detected is conveniently kept.
In the embodiment, the scale marks 9 are arranged on the positioning plate 8 of the first frame 2, the scale selection is performed according to the real installation space of the optical light guide plate 10 to be detected before the device is used, the working interval of the LED light bar 5 is selected, and the simulated state is ensured to be infinitely close to the real product state.
In the embodiment, the upper surfaces of the first frame 2 and the second frame 3 are flat and coplanar, so that the placed general optical module can be parallel to the optical light guide plate 10 to be detected.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (9)
1. The detection device for the uniformity of light guiding is characterized by comprising a bottom plate (1), wherein a first frame (2), a second frame (3) and a third frame (4) are respectively arranged on any three edges of the bottom plate (1), the first frame (2) and the second frame (3) are adjacent and perpendicular to each other, the third frame (4) is parallel to the first frame (2), the first frame (2) and the second frame (3) are fixed frames, and the third frame (4) is a movable frame capable of moving horizontally along the second frame (3); the LED lamp strip (5) capable of selecting a working area is installed on the inner walls of the first frame (2) and the second frame (3), and the detection device further comprises a general optical module.
2. The detection device according to claim 1, wherein the second frame (3) is provided with a sliding slot (6), and the third frame (4) is provided with a sliding block (7), wherein the sliding block (7) is in sliding fit with the sliding slot (6).
3. The detection device according to claim 1, characterized in that the first frame (2) and the second frame (3) are mounted on the base plate (1) by means of screws.
4. The detection device according to claim 1, wherein the bottom plate (1), the first frame (2), the second frame (3) and the third frame (4) are made of aluminum alloy.
5. The detecting device for detecting the rotation of a motor rotor according to claim 1, wherein the inner walls of the first border, the second border, the third border and the bottom plate are coated with diffuse reflection materials.
6. The detection device according to claim 1, wherein each LED light on the LED light bar (5) is individually powered.
7. The detection device according to claim 1, wherein a positioning plate (8) is fixedly mounted on the inner wall of each of the first frame (2) and the third frame (4), and the positioning plate (8) is located below the LED light bar (5).
8. The detection device according to claim 7, wherein the positioning plate (8) of the first frame (2) is provided with graduation marks (9).
9. The detection device according to claim 1, characterized in that the upper surfaces of the first frame (2) and the second frame (3) are flat and coplanar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210163007.XA CN114563163A (en) | 2022-02-22 | 2022-02-22 | Detection apparatus for leaded light homogeneity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210163007.XA CN114563163A (en) | 2022-02-22 | 2022-02-22 | Detection apparatus for leaded light homogeneity |
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| Publication Number | Publication Date |
|---|---|
| CN114563163A true CN114563163A (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210163007.XA Pending CN114563163A (en) | 2022-02-22 | 2022-02-22 | Detection apparatus for leaded light homogeneity |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202329991U (en) * | 2011-11-18 | 2012-07-11 | 四川长虹光电有限公司 | Light guide plate parameter test tooling |
| CN203365111U (en) * | 2013-08-12 | 2013-12-25 | 京东方科技集团股份有限公司 | Test fixture of backlight module |
| CN103676248A (en) * | 2013-12-31 | 2014-03-26 | 京东方科技集团股份有限公司 | Backlight module material reliability test fixture |
| CN205049315U (en) * | 2015-07-03 | 2016-02-24 | 东莞市彤光电子科技有限公司 | Light guide plate detection device |
| CN205642803U (en) * | 2016-04-21 | 2016-10-12 | 安徽凯盛众普新光源有限公司 | Movable light guide plate checkout stand |
| CN209432405U (en) * | 2019-01-07 | 2019-09-24 | 苏州天禄光科技股份有限公司 | A kind of light guide plate optic test jig |
| CN214066475U (en) * | 2021-02-19 | 2021-08-27 | 盐城维旺科技有限公司 | Light guide plate test fixture |
-
2022
- 2022-02-22 CN CN202210163007.XA patent/CN114563163A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202329991U (en) * | 2011-11-18 | 2012-07-11 | 四川长虹光电有限公司 | Light guide plate parameter test tooling |
| CN203365111U (en) * | 2013-08-12 | 2013-12-25 | 京东方科技集团股份有限公司 | Test fixture of backlight module |
| CN103676248A (en) * | 2013-12-31 | 2014-03-26 | 京东方科技集团股份有限公司 | Backlight module material reliability test fixture |
| CN205049315U (en) * | 2015-07-03 | 2016-02-24 | 东莞市彤光电子科技有限公司 | Light guide plate detection device |
| CN205642803U (en) * | 2016-04-21 | 2016-10-12 | 安徽凯盛众普新光源有限公司 | Movable light guide plate checkout stand |
| CN209432405U (en) * | 2019-01-07 | 2019-09-24 | 苏州天禄光科技股份有限公司 | A kind of light guide plate optic test jig |
| CN214066475U (en) * | 2021-02-19 | 2021-08-27 | 盐城维旺科技有限公司 | Light guide plate test fixture |
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