CN112872621B - Processing technology for mesh points of light guide plate of desk lamp - Google Patents
Processing technology for mesh points of light guide plate of desk lamp Download PDFInfo
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- CN112872621B CN112872621B CN202110082857.2A CN202110082857A CN112872621B CN 112872621 B CN112872621 B CN 112872621B CN 202110082857 A CN202110082857 A CN 202110082857A CN 112872621 B CN112872621 B CN 112872621B
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- guide plate
- light guide
- dots
- linear motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/073—Shaping the laser spot
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a table lamp light guide plate mesh point processing technology, which comprises the following steps: s1: placing the light guide plate to be dotted on a plane, and determining the number of rows and columns of the dots to be processed; s2: adopting a linear motor type laser machine, setting the energy output of the linear motor type laser machine to be a gradual change type, and adjusting the focal length; s3: processing the mesh points on the light guide plate at intervals and uniformly along the same straight line until all the mesh points in the same row are processed, moving the laser head to the next row, and controlling the size of the mesh points to be 0.15-0.25 mm; s4: repeating the step S3 to process the next row of dots until all the dots are processed, and arranging the dots of the adjacent rows in a staggered manner, wherein the row spacing and the column spacing of the dots are both 0.35-0.45 mm; according to the invention, by optimizing the processing technology of the mesh points of the light guide plate, after the prepared light guide plate is matched with the reflection paper and the anti-dazzle diffusion plate, the national AA-grade requirement can be met, the whole picture is fine and uniform, and the cost of the diffusion film is saved.
Description
Technical Field
The invention relates to the technical field of light guide plate mesh point processing, in particular to a processing technology of a desk lamp light guide plate mesh point.
Background
The light guide plate adopts the light emitting principle that light emitted by the LBM is subjected to diffuse reflection on the surface of a plate, and the transmission path of the light is damaged by changing the size and density of the mesh points, so that the optical uniformity and brightness are improved. The existing light guide plate mesh points still have the following defects: 1. the mesh points can be seen when the diameter of the mesh points is 0.4mm and the distance between the mesh points is 0.6mm, and a diffusion film is required to cover the mesh points; 2. the transverse deviation and the longitudinal deviation of the mesh points cause that the mesh point stripes are visible and can not be covered by a common diffusion film; 3. the matching uniformity of the conventional four-piece suit is more than 3; however, the standard requirement of AA-level illuminance of eye-protection desk lamps is that the illuminance in an area in which one-third sector with a radius distance of 50 cm from the center of circle is cut by the front sector is more than 300LX, the illuminance in an area in one-third sector with a radius distance of 30 cm from the center of circle is more than 500LX, and the uniformity of illuminance in a unit area is less than or equal to 3.
Disclosure of Invention
The invention aims to provide a table lamp light guide plate mesh point processing technology, the table lamp light guide plate mesh point processing technology can meet the national AA-level requirement by optimizing the processing technology of the light guide plate mesh points, matching the prepared light guide plate with reflective paper and an anti-dazzle diffusion plate, and the whole picture is fine and uniform, so that the cost of a diffusion film is saved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a table lamp light guide plate mesh point processing technology comprises the following steps:
s1: placing the light guide plate to be dotted on a plane, and determining the number of rows and columns of the dots to be processed;
s2: adopting a linear motor type laser machine, setting the energy output of the linear motor type laser machine to be a gradual change type, and adjusting the focal length;
s3: processing the mesh points on the light guide plate at intervals and uniformly along the same straight line until all the mesh points in the same row are processed, moving the laser head to the next row, and controlling the size of the mesh points to be 0.15-0.25 mm;
s4: and (5) repeating the step (S3) to process the next row of dots until all the dots are processed, arranging the dots of the adjacent rows in a staggered mode, and enabling the row spacing and the column spacing of the dots to be 0.35-0.45 mm.
Preferably, the energy output of the linear motor type laser machine is changed in an arc tangent function curve or an arc cotangent function curve; the abscissa of the arctangent function curve or the arctangent function curve is the position of the light guide plate, and the ordinate is the output power of the linear motor laser machine.
Preferably, the mesh point size is controlled to be 0.2 +/-0.02 mm; the line spacing and the column spacing of the dots are both 0.4 mm.
Preferably, the linear motor type laser of step S2 focuses with a short focal length lens, and deviates the focus center upward by 0.5 mm.
Preferably, the linear motor laser of step S2 emits a spot with a low-energy control laser tube.
Preferably, the energy output of the linear motor type laser machine is 14% -24% of rated power.
Preferably, the cutting speed of the linear motor type laser machine is 3.5 m/s.
Preferably, the proportion of the whole light-emitting picture of the light guide plate is 90% -100% -90%.
After the technical scheme is adopted, the invention has the following beneficial effects:
1. the invention relates to a processing technology of a table lamp light guide plate mesh point, which adopts a linear motor type laser dotting machine and uses a low-energy control laser tube to emit light spots to be small enough; then, linear motors are adopted to control medium-speed cutting, the cutting speed is 3.5m/s, the mesh points are in a water drop shape and are not easy to cover when the cutting speed is too high, and the production efficiency is too low when the cutting speed is too low; in addition, the focusing is carried out by using a short-focus lens, the focusing center is deviated upwards by 0.5mm, and the size of the dot can be controlled to be 0.2 +/-0.02 mm.
2. The invention relates to a table lamp light guide plate mesh point processing technology, which is characterized in that the existing mesh point lines are too obvious, and local malposition is not centered according to the conventional overall malposition, namely the front malposition is centered and the back malposition is deviated.
3. The invention relates to a processing technology of table lamp light guide plate mesh points, which adopts a gradual change type curve transition, so that the proportion of the whole picture of the light emitted by a light guide plate is 90-100-90%, and the whole uniformity is less than or equal to 3 by matching with an anti-dazzle diffusion plate.
Drawings
FIG. 1 is a block flow diagram of the present invention;
FIG. 2 is a schematic view of the distribution of the dots on the light guide plate according to the present invention;
fig. 3 is a graph showing a gradual change in energy output of the linear motor laser of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
Referring to fig. 1 to 3, a table lamp light guide plate mesh point processing process includes the following steps:
s1: placing the light guide plate to be dotted on a plane, and determining the number of rows and columns of the dots to be processed;
s2: adopting a linear motor type laser machine, adopting a short-focus lens for focusing, setting the energy output of the linear motor type laser machine as a gradual change type energy output which is changed in an arc tangent function curve, adjusting the focal length, and deviating the focusing center by 0.5mm upwards;
s3: adopting a linear motor type laser dotting machine, controlling a laser tube to emit light spots by using low energy with the rated power of 14% -24% so as to enable the light spots to be small enough, and enabling the linear motor type laser dotting machine to process mesh points on a light guide plate at intervals and uniformly along the same straight line, wherein the cutting speed of a linear motor is 3.5m/s, moving a laser head to the next row until all the mesh points in the same row are processed, the size of the mesh points is controlled to be 0.2 +/-0.02 mm, and the reason for controlling medium-speed cutting by adopting the linear motor is as follows: if the light spot cutting speed is too high, the mesh points are in a water drop shape and are not easy to cover, and if the light spot cutting speed is too low, the production efficiency is too low;
s4: repeating the step S3 to process the next row of dots until all the dots are processed, arranging the dots in the adjacent rows in a staggered manner, wherein the row spacing and the column spacing of the dots are both 0.4mm, and finally, the prepared dots are changed in a gradual change manner of an arc tangent function curve from the beginning to the end in the same row; the whole brightness proportion of the light emitted by the light guide plate is 90-100-90%, the surface light emitting angle of the lamp is 120 degrees, the middle brightness is high under the condition that the whole light emitting surface is uniform, and the surface illumination can be improved to the maximum extent.
The light guide plate prepared by the method adopts ten-point uniformity test, and the test point positions and results are shown in the following table;
the above table shows that the light guide plate prepared by optimizing the processing technology of the light guide plate mesh points can meet the national AA-level requirement by matching with the reflection paper and the anti-dazzle diffusion plate, the whole picture is fine and uniform, and the cost of the diffusion film is saved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A table lamp light guide plate mesh point processing technology is characterized by comprising the following steps:
s1: placing the light guide plate to be dotted on a plane, and determining the number of rows and columns of the dots to be processed;
s2: adopting a linear motor type laser machine, setting the energy output of the linear motor type laser machine to be a gradual change type, and adjusting the focal length;
s3: processing the mesh points on the light guide plate at intervals and uniformly along the same straight line until all the mesh points in the same row are processed, moving the laser head to the next row, and controlling the size of the mesh points to be 0.15-0.25 mm;
s4: repeating the step S3 to process the next row of dots until all the dots are processed, and arranging the dots of the adjacent rows in a staggered manner, wherein the row spacing and the column spacing of the dots are both 0.35-0.45 mm;
the energy output of the linear motor type laser machine is changed in an arc tangent function curve or an arc cotangent function curve; the abscissa of the arc tangent function curve or the arc cotangent function curve is the position of the light guide plate, and the ordinate is the output power of the linear motor type laser machine;
the linear motor type laser machine of the step S2 adopts a short-focal-length lens for focusing, and the focusing center is deviated by 0.5mm upwards;
the cutting speed of a linear motor of the linear motor type laser machine is 3.5 m/s;
the whole brightness ratio of the light emitted by the light guide plate is 90-100-90%.
2. The table lamp light guide plate mesh point processing technology of claim 1, wherein: the size of the mesh point is controlled to be 0.2 +/-0.02 mm; the line spacing and the column spacing of the dots are both 0.4 mm.
3. The table lamp light guide plate mesh point processing technology of claim 1, wherein: and S2, adopting a linear motor type laser dotting machine, and using a low-energy control laser tube to emit light spots.
4. The table lamp light guide plate mesh point processing technology of claim 3, wherein: the energy output of the linear motor type laser machine is 14% -24% of rated power.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110082857.2A CN112872621B (en) | 2021-01-21 | 2021-01-21 | Processing technology for mesh points of light guide plate of desk lamp |
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| CN202110082857.2A CN112872621B (en) | 2021-01-21 | 2021-01-21 | Processing technology for mesh points of light guide plate of desk lamp |
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| CN112872621A CN112872621A (en) | 2021-06-01 |
| CN112872621B true CN112872621B (en) | 2022-09-13 |
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| CN114346456A (en) * | 2022-01-26 | 2022-04-15 | 扬昕科技(苏州)有限公司 | Processing method and processing equipment for light guide plate mold core |
| CN114939728B (en) * | 2022-05-23 | 2024-05-10 | 合肥泰沃达智能装备有限公司 | Light guide plate processingequipment based on rotary platform |
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| CN2705802Y (en) * | 2004-05-13 | 2005-06-22 | 尹作海 | Laser etching light guide plate |
| CN101034183A (en) * | 2007-03-30 | 2007-09-12 | 苏州苏大维格数码光学有限公司 | Manufacturing method of light guiding board/ light guiding film mould core |
| KR20140121927A (en) * | 2013-04-05 | 2014-10-17 | 신영일 | Appraratus for manufacturing pattern on a light guide plate |
| CN103920992A (en) * | 2014-04-18 | 2014-07-16 | 苏州东山精密制造股份有限公司 | Light beam control device and laser processing system |
| CN108445577A (en) * | 2018-03-15 | 2018-08-24 | 合肥泰沃达智能装备有限公司 | A kind of uniform light extraction light guide plate and preparation method thereof |
| CN108544109A (en) * | 2018-04-11 | 2018-09-18 | 合肥泰沃达智能装备有限公司 | A kind of laser processing light guide plate protrusion site method |
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Denomination of invention: A Processing Technology for the Dot Point of Table Lamp Light Guide Plate Effective date of registration: 20230423 Granted publication date: 20220913 Pledgee: Bank of China Limited Xiamen hi tech Park sub branch Pledgor: Xiamen Zhaosong Photoelectric Technology Co.,Ltd. Registration number: Y2023980038786 |
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