FIGURE 2- - available via license: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Content may be subject to copyright.
Construction of continuous surface to satisfy the TIR condition for spreading light from an incident point. FIGURE 3-Relationship of small change of Δx, Δy and that of Δr, Δθ.
Source publication
We propose wedge type light guide plate (LGP) adopting twin inclined cylindrical surfaces (TICS) at the incident part of a LGP. It has higher optical efficiency than conventional wedge type LGP. In dimension of LGP which the thickness of incident part is 1.5 mm and that of luminance part is 0.7 mm, the optical efficiency of wedge type LGP adopting...
Context in source publication
Context 1
... angle θ is different from normal angle which is defined by the horizontal axis. It becomes the cylindrical coordinate by adding z-axis to two-dimensional polar coordinates. As shown in Fig. 3, we considered a small displacement from P to Q. Infinitesimal displacements Δx, Δy are expressed by Δr, Δθ ...
Similar publications
The development of LEDs is growing very fast, frequently producing highly efficient and powerful light sources. This encourages optical designers to frequently change the design of secondary optical systems to be suited for newly developed light sources. One of the most critical differences between the current developed LEDs is their luminous inten...
span lang="EN-GB">Ca<sub>3</sub>Sc<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>:Ce<sup>3+</sup> phosphors with one stage and tiny dimension were effectively produced utilizing the gel-combustion technique at a lower heat (1100◦C) than the traditional solid-status reaction technique (around 1500◦C). The phosphors' crystal phase and microstructure, as wel...
In this work, we investigated the luminous and melanopic efficiency of the radiation (LER/MER) performances of phosphor-converted LEDs (PC LEDs) with tunable spectral characteristics, namely peak wavelength, full width at half maximum (FWHM), and emission intensity. We constructed theoretical PC LED spectra based on the characteristics extracted fr...
With the advancement in technology of efficient and high-quality lighting, white light-emitting diodes (WLEDs) are gradually gaining ground with their ever-increasing high efficiency, energy density excitation, high device stability, and high output power. In this review, various technological approaches that are used to produce white light are pre...
This study systematically investigates the optical performance of N-polar deep-ultraviolet light-emitting diodes (DUV LEDs) in consideration of different quantum structures in the active region, with a highlight on various thicknesses of quantum barrier (QB), quantum well (QW), and the electron-blocking layer (EBL). The results show that the intern...
