Design of the Diffuse Reflector Cup with Microstructure and the Research on the Optical Performance

2013 ◽  
Vol 372 ◽  
pp. 41-44
Author(s):  
Shi Bao Li ◽  
Da Ming Wu ◽  
Xiu Ting Zheng ◽  
Ying Liu ◽  
Yan Liu
Keyword(s):  
Refractive Index ◽  
Injection Molding ◽  
High Efficiency ◽  
High Refractive Index ◽  
Early Research ◽  
Light Energy ◽  
Energy Utilization ◽  
Optical Performance ◽  
Diffuse Reflector

The reflective properties and illumination uniformity of the polymer can be improved effectively with microstructure on the surface and scattering particles with high refractive index inside. The paper is based on the early research of the author. The reflector cup is processed by injection molding using the polymer of high reflective properties, which can achieve high efficiency of the light energy utilization and the uniform emergent ray.

scholarly journals Research and Design of Wind and Solar Complementary Electric Sightseeing Boat

2020 ◽  
Vol 145 ◽  
pp. 02056
Author(s):  
Haomin Zhang ◽  
Xingang Xu
Keyword(s):  
Power Generation ◽  
Fossil Fuels ◽  
High Efficiency ◽  
Rapid Development ◽  
Light Energy ◽  
Energy Utilization ◽  
Utilization Efficiency ◽  
Lake Area ◽  
Domestic Water ◽  
Hull Design

To solve the problem of rapid development of domestic water tourism and water pollution in scenic waters, windsurfing technology and solar photovoltaic technology are applied to small and medium-sized sightseeing cruise ships. While optimizing the hull design and component coordination, the application of automatic control technology further improves the utilization efficiency of wind and light energy, and achieves the adaptation of the sail angle of attack and the efficient coupling of the two energies. The ship mainly uses the natural resources of solar energy and wind energy. It will not burn fossil fuels during the ship’s travel, thus reducing the emission of toxic and harmful substances, which has positive significance for environmental protection. In short, the solar wind-assisted power generation ship studied in this project has remarkable features such as zero emission, high degree of intelligence, significant wind-assisted effect, high efficiency of light energy utilization, and low hull space occupation. Compared with the ordinary lake area cruise ship, the energy-saving and emission reduction effect of the power generation ship is very obvious[1].

Investigation of thermal and optical performance of a phase change material–filled double-glazing unit

2017 ◽  
Vol 42 (2) ◽  
pp. 99-119 ◽  
Author(s):  
Changyu Liu ◽  
Yangyang Wu ◽  
Dong Li ◽  
Tengfei Ma ◽  
Ahmed Kadhim Hussein ◽  
...  
Keyword(s):  
Refractive Index ◽  
Phase Change ◽  
Phase Change Material ◽  
Extinction Coefficient ◽  
Time Lag ◽  
Energy Utilization ◽  
Optical Parameters ◽  
Optical Performance ◽  
Solar Absorptance ◽  
Change Material

Phase change material applied in the glazing structure can improve its thermal performance, which has effect on its optical performance. A model to determine thermal and optical performance of a phase change material–filled double-glazing unit was developed, and the effect of optical parameters of phase change material was numerically investigated. The results show that the effect of the refractive index of phase change material on temperature time lag, temperature decrement factor, solar transmittance, solar absorptance, and reflectance of a phase change material–filled double-glazing unit is weak when the refractive index of phase change material is lower than 1.95; however, the effect of the extinction coefficient of phase change material is violent. The liquid phase change material with large extinction coefficient is not recommended from the viewpoint of light utilization, but the large extinction coefficient of solid phase change material is accepted from the viewpoint of energy utilization.

Photopolymerizable glass with high refractive index species: Optical performance and emerging implementations

2009 ◽  
Vol 18 (1) ◽  
pp. 21-24 ◽  
Author(s):  
O. Martínez-Matos ◽  
J. A. Rodrigo ◽  
M. L. Calvo ◽  
V. Hevia-Martín ◽  
P. Cheben
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Optical Performance ◽  
Index Species

scholarly journals High-efficiency subwavelength diffractive element patterned in a high-refractive-index material for 633??nm

1998 ◽  
Vol 23 (7) ◽  
pp. 552 ◽  
Author(s):  
Simion Astilean ◽  
Philippe Lalanne ◽  
Pierre Chavel ◽  
Edmond Cambril ◽  
Huguette Launois
Keyword(s):  
Refractive Index ◽  
High Efficiency ◽  
High Refractive Index ◽  
Diffractive Element ◽  
Refractive Index Material

scholarly journals All-dielectric metasurfaces for polarization manipulation: principles and emerging applications

Nanophotonics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 3755-3780 ◽  
Author(s):  
Yueqiang Hu ◽  
Xudong Wang ◽  
Xuhao Luo ◽  
Xiangnian Ou ◽  
Ling Li ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Efficiency ◽  
High Refractive Index ◽  
Data Encryption ◽  
Optical Systems ◽  
Ohmic Loss ◽  
Imaging Data ◽  
New Paradigm ◽  
High Efficient ◽  
Low Efficiency

AbstractMetasurfaces, composed of specifically designed subwavelength units in a two-dimensional plane, offer a new paradigm to design ultracompact optical elements that show great potentials for miniaturizing optical systems. In the past few decades, metasurfaces have drawn broad interests in multidisciplinary communities owing to their capability of manipulating various parameters of the light wave with plentiful functionalities. Among them, pixelated polarization manipulation in the subwavelength scale is a distinguished ability of metasurfaces compared to traditional optical components. However, the inherent ohmic loss of plasmonic-type metasurfaces severely hinders their broad applications due to the low efficiency. Therefore, metasurfaces composed of high-refractive-index all-dielectric antennas have been proposed to achieve high-efficiency devices. Moreover, anisotropic dielectric nanostructures have been shown to support large refractive index contrast between orthogonal polarizations of light and thus provide an ideal platform for polarization manipulation. Herein, we present a review of recent progress on all-dielectric metasurfaces for polarization manipulation, including principles and emerging applications. We believe that high efficient all-dielectric metasurfaces with the unprecedented capability of the polarization control can be widely applied in areas of polarization detection and imaging, data encryption, display, optical communication and quantum optics to realize ultracompact and miniaturized optical systems.

scholarly journals Bright single photon emitters with enhanced quantum efficiency in a two-dimensional semiconductor coupled with dielectric nano-antennas

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Luca Sortino ◽  
Panaiot G. Zotev ◽  
Catherine L. Phillips ◽  
Alistair J. Brash ◽  
Javier Cambiasso ◽  
...  
Keyword(s):  
Refractive Index ◽  
Quantum Efficiency ◽  
Gallium Phosphide ◽  
High Efficiency ◽  
Single Photon ◽  
High Refractive Index ◽  
Coherence Time ◽  
Saturation Pulse ◽  
Single Photon Emitters ◽  
Nano Antennas

AbstractSingle photon emitters in atomically-thin semiconductors can be deterministically positioned using strain induced by underlying nano-structures. Here, we couple monolayer WSe2 to high-refractive-index gallium phosphide dielectric nano-antennas providing both optical enhancement and monolayer deformation. For single photon emitters formed on such nano-antennas, we find very low (femto-Joule) saturation pulse energies and up to 104 times brighter photoluminescence than in WSe2 placed on low-refractive-index SiO2 pillars. We show that the key to these observations is the increase on average by a factor of 5 of the quantum efficiency of the emitters coupled to the nano-antennas. This further allows us to gain new insights into their photoluminescence dynamics, revealing the roles of the dark exciton reservoir and Auger processes. We also find that the coherence time of such emitters is limited by intrinsic dephasing processes. Our work establishes dielectric nano-antennas as a platform for high-efficiency quantum light generation in monolayer semiconductors.

30‐2: High Refractive Index Glass Wafers for Augmented Reality: Boundary Conditions for an Excellent Optical Performance

2021 ◽  
Vol 52 (1) ◽  
pp. 383-385
Author(s):  
Frederik Bachhuber ◽  
Ruediger Sprengard ◽  
Jens Ulrich Thomas ◽  
Thorsten Damm ◽  
Stefan Weidlich ◽  
...  
Keyword(s):  
Refractive Index ◽  
Augmented Reality ◽  
Boundary Conditions ◽  
High Refractive Index ◽  
Optical Performance
Sign in / Sign up

Export Citation Format

Share Document