Optical characteristics on practical verification for pico-laser-engraved glass light guide plate with concave microstructures

Teng, Tun-Chien; Chang, Tien-Li; Tsai, Hsin Chun

doi:10.1007/s00170-021-08179-9

Cited by 1 publication

(2 citation statements)

References 28 publications

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“…This effect became more pronounced at the highest laser power of 8 W, where the elliptical shape was prominently can be seen. Numerous observations of micro-dots with elliptical shape were also has been reported in previous study [35][36][37].…”

Section: Effect Of Laser Power To the Formation Of Micro-dotssupporting

confidence: 71%

“…It has more straight-forward steps and has low-cost production [29]. However, some researchers preferred using ultrafast lasers, such as femtosecond, picosecond and nanosecond UV lasers for engraving microstructure patterns on material surface [30,31]. These types of lasers are well-known for their high precision and accuracy, as well as ability to produce highly intricate and complex design.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of Polymer Light Guide Plate (LGP) using Direct CO2 Laser Structuring

Norfazilasari Yasman,

Raja Murfiqah Raja Mohamad Fouzy,

Mohd Zairulnizam Mohd Zawawi

2024

ARAM

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Light guide plates (LGPs) are an integral component that help distribute illumination from the light source in a variety of applications. Therefore, the design and quality of the microstructure pattern in LGPs play a significant role in achieving high luminous efficiency and light uniformity. This study investigates the relationship between laser power and laser scanning speed to the formation of micro-dots by using CO2 direct laser structuring on PMMA. Furthermore, the effect of different micro-dots pitch to the luminance was also evaluated using the luminance meter. Our finding shows that increase of laser power and decrease of laser scanning speed resulted in larger micro-dots diameter and deeper micro-dots. The results also showed that the smaller the pitch, the higher the luminance reading. Overall, the low-cost CO2 direct laser structuring demonstrated in the study able to produce consistent micro-dots pattern diameter and height which is suitable for fabrication of LGPs in the mass production.

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Section: Effect Of Laser Power To the Formation Of Micro-dotssupporting

confidence: 71%