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Device and method for carrying out parallel processing of scattering net points of light guide plates through femtosecond lasers

A femtosecond laser and light guide plate technology, which is applied in metal processing equipment, laser welding equipment, manufacturing tools, etc., can solve the problems of low processing efficiency and achieve the effect of improving efficiency, improving precision, and maintaining stable processing quality and smoothness

Active Publication Date: 2017-05-31
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest disadvantage of femtosecond laser micromachining is low processing efficiency. In order to improve the processing efficiency during femtosecond micromachining, the method of multi-beam parallel processing is adopted. Parallel processing can greatly improve processing efficiency, so it is widely used in femtosecond laser micromachining. Processing field

Method used

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  • Device and method for carrying out parallel processing of scattering net points of light guide plates through femtosecond lasers
  • Device and method for carrying out parallel processing of scattering net points of light guide plates through femtosecond lasers
  • Device and method for carrying out parallel processing of scattering net points of light guide plates through femtosecond lasers

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Effect test

Embodiment 1

[0043] Such as Figure 1-Figure 7 As shown, a femtosecond laser parallel processing device for scattering dots of a light guide plate includes a light guide plate, a light guide plate transmission positioning device, a light guide plate processing center device, a heat exhaust and dust removal device, a femtosecond laser holographic parallel processing system and a control center. The light guide plate transmission and positioning device, the light guide plate processing center device, the heat removal and dust removal device and the control center are arranged on the frame 2; the light guide plate transmission and positioning device includes a light guide plate transmission mechanism, an adsorption device and a grating positioning sensor 23, The light guide plate transmission mechanism is used to transmit the light guide plate for scattering dot processing, the light guide plate transmission mechanism is driven by a transmission servo motor 29, the upper part of the light guid...

Embodiment 2

[0059] A method for parallel processing of scattering dots of a light guide plate by a femtosecond laser, comprising the following steps:

[0060] Step 1 Place the light guide plate on the adsorption device of the conveyor belt, and the accurate positioning of the light guide plate on the conveyor belt is realized by the adsorption device;

[0061] Step 2. The light guide plate transmission mechanism transports the light guide plate to the position of the grating positioning sensor through the conveyor belt, and the transmission servo motor stops rotating;

[0062] Step 3. The light guide plate processing center device starts to work, and the femtosecond laser holographic parallel processing system splits and focuses the beam of the laser head; The bar feeding device realizes the feeding of the laser head, thereby completing the processing of the scattering dots of the light guide plate;

[0063] Step 4 During the processing, the heat exhaust and dust removal device works at ...

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Abstract

The invention discloses a device and method for carrying out parallel processing of scattering net points of light guide plates through femtosecond lasers. The device comprises a light guide plate transmitting and locating device, a light guide plate processing center device, a heat removal and dust removal device, a femtosecond laser holography parallel processing system and a control center. The light guide plate transmitting and locating device comprises a light guide plate transmitting mechanism, an adsorption device and a grating locating sensor. The light guide plate processing center device comprises a complete machine bridge, a supporting plate and ball screw feed devices in the direction X and the direction Y. The femtosecond laser parallel processing system is a beam splitting and conduction device used for emitting a laser beam through a femtosecond laser device and comprises the femtosecond laser device, light path transmitting and controlling equipment, a spatial light modulator (SLM) and a microscope and monitor system. According to the device and method, the liquid crystal spatial light modulator (LCSLM) is utilized for locating a computer generated hologram (CGH), parallel processing of multiple light beams can be achieved at a time, the processing speed can be effectively increased, the processing efficiency is remarkable, the processing time is shortened, and the processing cost is greatly reduced.

Description

technical field [0001] The invention relates to the field of high-end laser manufacturing equipment and advanced processing technology, in particular to a device and method for parallel processing of scattering dots of a light guide plate by a femtosecond laser. Background technique [0002] Liquid crystal display (LCD) has become the mainstream of flat panel display. As a green lighting method, LED backlight is gradually becoming the standard configuration of LCD. It is very important to convert the light source into uniform light output on the surface and to design and manufacture the light guide plate quickly and efficiently. [0003] Performance parameters such as brightness and uniformity of the backlight module directly affect the image quality of a liquid crystal display (LCD). Liquid crystal displays have more and more stringent requirements in terms of brightness and chromaticity, so the requirements for backlight modules are also getting higher and higher. Light-...

Claims

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Application Information

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IPC IPC(8): B23K26/0622B23K26/70B23K26/067
CPCB23K26/0624B23K26/067B23K26/702
Inventor 孙树峰王津王晓王玉玲杨勇杨发展姜京亮王德祥庄梅孙术慧孙术彬王萍萍
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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