scholarly journals Light Guide Collector Prototype: Laboratory Testing

2017 ◽  
Vol 19 (2) ◽  
pp. 124
Author(s):  
Jitka - Mohelnikova ◽  
Stanislav Darula ◽  
Ayodeji Omishore ◽  
Petr Mohelnik ◽  
Denis Micek
Keyword(s):  
Laboratory Testing ◽  
Laboratory Experiments ◽  
Light Guide ◽  
Light Transmission ◽  
Transmission Efficiency ◽  
Guide System

The article reviews the potential of light guide system equipped by a concentrator device capturing daylight applicable for illumination of building interiors and presents results of experiments on performance of its prototype. The main goal is focused on the comparison of traditional solutions and newly developed prototype of the light guide system and presents examination of its light transmission efficiency based on the laboratory experiments.

Comparison of Two Coating Material Reflections of Hollow Light Guide Tube

2014 ◽  
Vol 1041 ◽  
pp. 412-415
Author(s):  
Lenka Janečková ◽  
Stanislav Darula ◽  
Daniela Bošová
Keyword(s):  
Light Guide ◽  
Light Transmission ◽  
Transmission Efficiency ◽  
Luminous Flux ◽  
Coating Material ◽  
Guide Tube ◽  
Coating Materials ◽  
Two Samples ◽  
Transmission Measurements ◽  
Light Guides

This paper discusses tube transmission efficiency of two straight hollow light guides. Two samples with diameter of 530 mm and length 1170 mm were investigated under the artificial sky in the laboratory at ICA SAS in Bratislava. The entering luminous flux was calculated from measured illuminance in the point located on the top of light guide. Below the bottom of the light guide was located a set of measuring points on the special construction in the shape of a cross. In these points, one by one, the elementary illuminances were measured and the luminous fluxes leaving the light guide were calculated. Paper presents methodology for laboratory light transmission measurements and discusses effects of two various coating materials on light transmission efficiency of hollow light guides.

12.4: The Design of Front Light Guide System Based on R‐LCD

2019 ◽  
Vol 50 (S1) ◽  
pp. 115-118
Author(s):  
Fei Liang ◽  
Xiuyun Chen ◽  
Lingyu Sun ◽  
Jingjun Du ◽  
Peng Zhong ◽  
...  
Keyword(s):  
Light Guide ◽  
Guide System

P‐94: The Design of Front Light Guide System Based on R‐LCD

2019 ◽  
Vol 50 (1) ◽  
pp. 1591-1594
Author(s):  
Fei Liang ◽  
Xiuyun Chen ◽  
Lingyu Sun ◽  
Jingjun Du ◽  
Peng Zhong ◽  
...  
Keyword(s):  
Light Guide ◽  
Guide System

scholarly journals Investigation of Light Transmission Efficiency in ITER Hard X-Ray Monitor

2021 ◽  
Vol 16 (0) ◽  
pp. 1302106-1302106
Author(s):  
Shin KAJITA ◽  
Santosh P. PANDYA ◽  
Richard O'CONNOR ◽  
Robin BARNSLEY ◽  
Huxford ROGER
Keyword(s):  
Light Transmission ◽  
Transmission Efficiency ◽  
X Ray

Solid Fiber Inside Capillary and Modified Fusion-Spliced Fiber Optic Microneedle Devices

2020 ◽  
Author(s):  
Jason N. Mehta ◽  
Christopher G. Rylander
Keyword(s):  
Fiber Optic ◽  
Light Transmission ◽  
Laser Energy ◽  
Transmission Efficiency ◽  
Brain Parenchyma ◽  
Phase Iii ◽  
Integrating Sphere ◽  
Convection Enhanced Delivery ◽  
Phase Iii Clinical Trials ◽  
The Brain

Abstract Clinical treatment of Glioblastoma Multiforme (GBM) is generally ineffective in increasing patient survival. Convection-enhanced delivery (CED) is an alternative, investigative therapy in which a small caliber catheter is placed directly into the brain parenchyma. However, standard CED drug delivery techniques are unable to reach the entirety of the brain tumor, attributing to the failure of Phase III clinical trials. Fiber optic microneedle devices (FMDs), capable of simultaneous fluid and laser energy delivery, have shown potential to increase the drug dispersal volume when compared to fluid only devices. Previously described FMDs have had low laser transmission efficiency. In this work, we present two FMD manufacturing methods, a solid fiber inside capillary (SFIC) FMD and a modified fusion spliced (FS) FMD. Transmission efficiency of the two proposed FMDs were measured using a 1064 nm laser and an integrating sphere detector with air, deionized water, and black ink inside of the bore of the FMDs. The transmission efficiency of the FS FMD was between 45 and 127% larger than that of previously reported FS FMDs. Additionally, the transmission efficiency of the SFIC was significantly higher than the FS FMD (p ≤ 0.04 for all groups). However, the SFIC FMDs suffered catastrophic fracture failure at bend radii smaller than the manufacture specification, likely due to scribing of the capillary during the FMD fabrication process. Modifying FS FMDs appears to be the preferred fabrication method providing improved light transmission efficiency and mechanical strength on par with the capillary manufacturer’s specifications.

Optical Analysis for Designing a Planar Solar Concentrator Based on Light Guide System

2012 ◽  
Vol 36 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Jong-Ho Han ◽  
Jong-Sun Kim ◽  
Chul-Jin Hwang ◽  
Kyung-Hwan Yoon ◽  
Jeong-Jin Kang
Keyword(s):  
Light Guide ◽  
Solar Concentrator ◽  
Optical Analysis ◽  
Guide System
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