Initial work of whole glass flat panel type vacuum fluorescent light source

2002 ◽  
Author(s):  
G.Y. Liu ◽  
S.H. Xia ◽  
Y.J. Lu ◽  
S.F. Chen ◽  
H.Y. Li ◽  
...  
Keyword(s):  
Light Source ◽  
Fluorescent Light ◽  
Flat Panel ◽  
Panel Type ◽  
Initial Work

scholarly journals Optimal Color Lighting for Scanning Images of Flat Panel Display using Simplex Search

2018 ◽  
Vol 4 (11) ◽  
pp. 133
Author(s):  
HyungTae Kim ◽  
EungJoo Ha ◽  
KyungChan Jin ◽  
ByungWook Kim
Keyword(s):  
Image Quality ◽  
Light Source ◽  
Light Emitting Diode ◽  
Optical Filters ◽  
Flat Panel Display ◽  
Flat Panel ◽  
Light Emitting ◽  
Simplex Search ◽  
Inspection Systems ◽  
Color Control

A system for inspecting flat panel displays (FPDs) acquires scanning images using multiline charge-coupled device (CCD) cameras and industrial machine vision. Optical filters are currently installed in front of these inspection systems to obtain high-quality images. However, the combination of optical filters required is determined manually and by using empirical methods; this is referred to as passive color control. In this study, active color control is proposed for inspecting FPDs. This inspection scheme requires the scanning of images, which is achieved using a mixed color light source and a mixing algorithm. The light source utilizes high-power light emitting diodes (LEDs) of multiple colors and a communication port to dim their level. Mixed light illuminates an active-matrix organic light-emitting diode (AMOLED) panel after passing through a beam expander and after being shaped into a line beam. The image quality is then evaluated using the Tenenbaum gradient after intensity calibration of the scanning images. The dimming levels are determined using the simplex search method which maximizes the image quality. The color of the light was varied after every scan of an AMOLED panel, and the variation was iterated until the image quality approached a local maximization. The number of scans performed was less than 225, while the number of dimming level combinations was 20484. The proposed method can reduce manual tasks in setting-up inspection machines, and hence is useful for the inspection machines in FPD processes.

scholarly journals INFLUENCE OF LIGHT SOURCE ON THE GROWTH OF ALFALFA CULTIVARS

1973 ◽  
Vol 53 (2) ◽  
pp. 291-294 ◽  
Author(s):  
D. H. HEINRICHS
Keyword(s):  
Protein Content ◽  
Light Source ◽  
Germ Plasm ◽  
Red Light ◽  
Fluorescent Light ◽  
Medicago Falcata ◽  
Definite Trend ◽  
Growth Room ◽  
Yellow Orange ◽  
Genetic Makeup

Alfalfa produced more herbage and more roots in a growth room when the fluorescent portion of an incandescent-fluorescent light source consisted of half gro-lux, high in blue-green-red light and half cool-white, high in blue-green-yellow-orange light than when it consisted of either alone. Protein content and degree of flowering were not affected by light source variations. Alfalfa cultivars, ranging in genetic makeup from Medicago falcata to M. media and M. sativa types, responded similarly to variations in light source. There was a definite trend for cultivars to produce less herbage and fewer roots as the proportion of M. falcata germ plasm in them increased. M. falcata flowered later than M. sativa in the growth room.

Tuning characteristics of fluorescent light source by dye-doped liquid crystal filled hollow fiber

2017 ◽  
Vol 66 (15) ◽  
pp. 154205
Author(s):  
L Yue-Lan ◽  
Yin Xiang-Bao ◽  
Yang Yue ◽  
Liu Yong-Jun ◽  
Yuan Li-Bo
Keyword(s):  
Liquid Crystal ◽  
Light Source ◽  
Hollow Fiber ◽  
Fluorescent Light

Selective Tension Apparatus Development of Vibration Membrane for Stereo Speaker Production

2014 ◽  
Vol 597 ◽  
pp. 458-463
Author(s):  
Uk Su Kim ◽  
Yoon Jun Jung ◽  
Ba Wi Jeong ◽  
Min Su Kim ◽  
Gil Surp Yang ◽  
...  
Keyword(s):  
Mass Production ◽  
Computer Aided Engineering ◽  
Point Location ◽  
Flat Panel ◽  
Computer Aided ◽  
Panel Type ◽  
3D Tv ◽  
Simulation Results ◽  
Optimized Conditions

In recent years, interest is growing about stereoscopic to the dissemination and development of 3D-TV. However, according to the development of image is also very important to the development of real sound. So recently interest is growing about the stereo sound. It is limited to typical speakers for implementing to stereo speakers. So, recently, has improved sound using flat panel sound. In this study, analyzed apparatus and selected optimum points through the design and CAE (Computer aided engineering) for production of selective tension apparatus of vibration membrane for the flat panel type speaker production. Many tension points offer variety sound environments but it action adverse element in mass production. In this study analyzed through the CAE by designing in tension point location and tension frame for stereo speaker production. CAE was analyzed the optimized conditions using ansys program. The results variously changed parts of affected tension by tension point location or according to the quantity clamped. We selected to optimized tension point and tension frame based on the simulation results. This study is intended to suitable for mass production in the stereo speaker production.

scholarly journals Use of a Fluorescent Light Source as an Adjunct to Traditional Methods to Detect Composite Resin Dental Restorations

2018 ◽  
Vol 7 (2) ◽  
pp. 79-84
Author(s):  
Dean Kolbinson ◽  
Brendon Reynaud ◽  
Andrew Doig ◽  
Eric Tuttosi ◽  
Alan Heinrichs ◽  
...  
Keyword(s):  
Light Source ◽  
Composite Resin ◽  
Fluorescent Light ◽  
Traditional Methods ◽  
Dental Restorations
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