Research of micro-prism distribution on the bottom surface of the small-size integrated light guide plate

Xu, Peng; Huang, Yué; Su, Zhijie; Zhang, Xu‐Lin; Luo, Tongzheng; Peng, Weiwen

doi:10.1364/oe.23.004887

Cited by 30 publications

(11 citation statements)

References 7 publications

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“…Based on the research on sub-wavelength optical design and application accumulated by our research group [10][11][12][13][14][15][16][17][18][19], this paper proposes a method based on a simple periodic binary sub-wavelength structure [12,13] to design a terahertz broadband filter. A silicon-based terahertz wideband filter with a center frequency of 4.07 THz was designed.…”

Section: Introductionmentioning

confidence: 99%

Terahertz Wideband Filter Based on Sub-Wavelength Binary Simple Periodic Structure

et al. 2019

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In this paper, a silicon-based terahertz wideband filter was designed using rigorous couple wave theory to achieve high diffraction efficiency and wideband filtering performance. The optimal parameters, such as filter period, duty ratio, and groove depth, are given. The design value and tolerance analysis were carried out to obtain the allowable deviation range of each structural parameter of the filter. The device was fabricated and tested for performance. The experimental results were consistent with the design results, proving the feasibility of the design method and can be applied in terahertz, communication, imaging, and other fields.

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Section: Introductionmentioning

confidence: 99%

Terahertz Wideband Filter Based on Sub-Wavelength Binary Simple Periodic Structure

et al. 2019

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“…Surfaces with micro/nano features on polymer components have been widely used in optical displays, microfluidic chips, cell and tissue cultures, and other roles [1,2,3,4]. For example, a distribution expression of microprism was designed on the bottom surface of an integrated light guide plate (ILGP).…”

Section: Introductionmentioning

confidence: 99%

Efficient and Precise Micro-Injection Molding of Micro-Structured Polymer Parts Using Micro-Machined Mold Core by WEDM

Liao

Zhou

et al. 2019

Polymers

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In this paper, micro-structured polymer parts were efficiently and accurately fabricated by micro-injection molding using a micro-structured mold core machined by wire electrical discharge machining (WEDM). The objective was to realize low-cost mass production and manufacturing of micro-structured polymer products. The regular micro-structured mold core was manufactured by precise WEDM. The micro-structured polymer workpieces were rapidly fabricated by micro-injection molding and the effects of the micro-injection molding process parameters on replication rate and surface roughness of micro-structured polymers were systematically investigated and analyzed. It is shown that the micro-structured polymer can be rapidly and precisely fabricated by the proposed method. The experimental results show the minimum size machining error of the micro-structured mold core and the maximum replication rate of micro-formed polymer were 0.394% and 99.12%, respectively. Meanwhile, the optimal micro-injection molding parameters, namely, jet temperature, melt temperature, injection velocity, holding pressure and holding time were 195 °C, 210 °C, 40 mm/min, 7 Mpa and 5 s, respectively. The surface roughness Ra at the groove bottom and top of the micro-structured polymer workpieces achieved minimum values of 0.805 µm and 0.972 µm, respectively.

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“…LEDs are point light sources, so the traditional design must be converted to a surface source by using an LGP. Traditional architectures typically include light guides, reflector films, dot patterns, and optical films [22][23][24][25]. A light guide plate is mainly made from solid materials such as polycarbonate (PC) and polymethyl methacrylate (PMMA).…”

Section: Hollow Light Guide Architecture Involving Mini-leds With Asymentioning

confidence: 99%

Hollow Light Guide Module Involving Mini Light-Emitting Diodes for Asymmetric Luminous Planar Illuminators

Chen

et al. 2019

Energies

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Light-emitting diodes (LEDs) have numerous advantages. However, LEDs only offer a point light source. Therefore, transforming LEDs into planar light sources is a new objective in general lighting applications. Solid light guides have strong uniformity but are marred by their material absorption characteristics and weight. Hollow light guides constitute a solution to the weight problem but exhibit poor uniformity and necessitate sacrificing efficiency to enhance uniformity. To resolve the uniformity, weight, and efficiency problems simultaneously, we propose a hollow light guide architecture involving mini-LEDs with asymmetric luminous intensity. To develop this guide module, we first optimized the aspect ratio of the cavity and then modulated the light path by using varied angles of the reflection surface on the end wall of the module. We then designed a beveled reflection surface near the mini-LEDs to further enhance uniformity. An archetype of the proposed architecture for planar light source modules had a width and depth of 51.5 and 9.95 mm, respectively. Experimental results revealed a total efficiency of 83.9% and uniformity of 92.3%. The module weight was determined to be 215 g, which was 40% lighter than that of similarly sized solid light guide modules.

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Research of micro-prism distribution on the bottom surface of the small-size integrated light guide plate

Cited by 30 publications

References 7 publications

Terahertz Wideband Filter Based on Sub-Wavelength Binary Simple Periodic Structure

Terahertz Wideband Filter Based on Sub-Wavelength Binary Simple Periodic Structure

Efficient and Precise Micro-Injection Molding of Micro-Structured Polymer Parts Using Micro-Machined Mold Core by WEDM

Hollow Light Guide Module Involving Mini Light-Emitting Diodes for Asymmetric Luminous Planar Illuminators

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