Removal of Transparent Plastic Film Specular Reflection Based on Multi-Light Sources

2012 ◽  
Author(s):  
Chengjie Wang ◽  
Sei-ichiro Kamata
Keyword(s):  
Specular Reflection ◽  
Light Sources ◽  
Plastic Film ◽  
Transparent Plastic

P-57: A Transparent Plastic Film having Excellent Optical Properties and High Heat Resistance for Flexible Display Substrates

2006 ◽  
Vol 37 (1) ◽  
pp. 418 ◽  
Author(s):  
Yoshiaki Watanabe ◽  
Ken-ichi Makita ◽  
Yasuyoshi Fujii ◽  
Hisanori Okada ◽  
Naoto Obara ◽  
...  
Keyword(s):  
Optical Properties ◽  
Heat Resistance ◽  
High Heat ◽  
Plastic Film ◽  
High Heat Resistance ◽  
Flexible Display ◽  
Transparent Plastic

scholarly journals Shading and periods of acclimatization of micropropagated banana plantlets cv. Grande Naine

2009 ◽  
Vol 66 (3) ◽  
pp. 331-337 ◽  
Author(s):  
Ciro Scaranari ◽  
Paulo Ademar Martins Leal ◽  
Paulo Mazzafera
Keyword(s):  
Light Condition ◽  
Physiological Parameters ◽  
Field Conditions ◽  
Plastic Film ◽  
Air Humidity ◽  
Transparent Plastic ◽  
Light Water ◽  
Relative Air Humidity ◽  
Shade Cloth

Banana plantlets obtained by micropropagation need to be submitted to a period of acclimatization since they do not use light, water, and nutrients in an efficient way. The acclimatization must be carried out under greenhouse conditions where temperature, light, and air humidity are adequate for a gradual hardening of the plantlets. In this study, the development of banana plantlets was evaluated during acclimatization under a full light condition including covered surfaces with red shade cloth (70%, 50%, and 30% shade) and black shade cloth (50% shade), both under a transparent plastic film of 100 µm. Temperature, relative air humidity, irrigation, and nutrition conditions were also controlled. Physical and physiological parameters were recorded at various stages in the greenhouses after three, six, and nine weeks and also after seven weeks of transplanting to field conditions. Treatments were hierarchically graded according to their statistic classification. Combined results indicated superior outcomes of plantlets maintained under black 50% shade cloth for nine weeks, both in the summer and winter seasons. Similar results, but in a shorter time, were obtained with plantlets cultivated under red 70% shade cloth, for six weeks in the summer.

Estimation of Position and Intensity of Multi-Light Sources Based on Specular Sphere

2018 ◽  
Vol 22 (4) ◽  
pp. 491-497
Author(s):  
Chao Xu ◽  
◽  
Hua Li ◽  
Cheng Han
Keyword(s):  
Mixed Reality ◽  
Specular Reflection ◽  
Multiple Point ◽  
Light Sources ◽  
Ambient Light ◽  
Sphere Surface ◽  
Illumination Estimation ◽  
Illumination Model ◽  
Novel Method ◽  
Point Light

Illumination estimation is an important research content in mixed reality technology. This paper presents a novel method for locating multiple point light sources and estimating their intensities from the images of a pair of reference spheres. In our approach, no prior knowledge of the location of the sphere is necessary, and the center of the sphere can be uniquely identified with the known radius. The sphere surface is assumed to have both Lambertian and specular properties instead of being a pure Lambertian or specular surface, which guarantees a higher accuracy than the existing approaches. The position estimations of multiple light sources are based on the fact that the specular reflection is highly dependent on highlights. One sphere is utilized to determine the directions of the light sources, and two spheres are used to locate the positions. The images of reference spheres are sampled and partitioned with multiple light sources in different positions. An illumination model is used to calculate the intensities of the ambient light and multiple light sources. Experiments on both simulation and synthetic images show that this method is feasible and accurate for estimating the positions and intensities of the multiple light sources.

Transparent Plastic Microplasma Flexible Light Sources

2006 ◽  
Author(s):  
Meng Lu ◽  
Sung-jin Park ◽  
Brian Cunningham ◽  
J. Eden
Keyword(s):  
Light Sources ◽  
Transparent Plastic

scholarly journals Screening of Nanocellulose from Different Biomass Resources and Its Integration for Hydrophobic Transparent Nanopaper

Molecules ◽  
2020 ◽  
Vol 25 (1) ◽  
pp. 227 ◽  
Author(s):  
Yanran Qi ◽  
Hao Zhang ◽  
Dandan Xu ◽  
Zaixin He ◽  
Xiya Pan ◽  
...  
Keyword(s):  
Environmental Pollution ◽  
Food Packaging ◽  
Electronic Device ◽  
Light Transmittance ◽  
Plastic Film ◽  
Biomass Waste ◽  
Transparent Plastic ◽  
Water Contact ◽  
Amorpha Fruticosa ◽  
Biomass Resources

Petroleum-based plastics, such as PP, PE, PVC, etc., have become an important source of environmental pollution due to their hard degradation, posing a serious threat to the human health. Isolating nanocellulose from abundant biomass waste resources and further integrating the nanocellulose into hydrophobic transparent film (i.e., nanopaper), to replace the traditional nondegradable plastic film, is of great significance for solving the problem of environmental pollution and achieving sustainable development of society. This study respectively extracted nanocellulose from the branches of Amorpha fruticosa Linn., wheat straw, and poplar residues via combined mechanical treatments of grinding and high-pressure homogenization. Among them, the nanocellulose derived from the Amorpha fruticosa has a finer structure, with diameter of about 10 nm and an aspect ratio of more than 500. With the nanocellulose as building block, we constructed hydrophilic nanopaper with high light transmittance (up to 90%) and high mechanical strength (tensile strength up to 110 MPa). After further hybridization by incorporating nano-silica into the nanopaper, followed by hydrophobic treatment, we built hydrophobic nanopaper with transmittance over 82% and a water contact angle of about 102° that could potentially replace transparent plastic film and has wide applications in food packaging, agricultural film, electronic device, and other fields.

Sign in / Sign up

Export Citation Format

Share Document