LEDs emit light when an electric current passes through them. ... As well as a variety of colours, sizes and shapes, LEDs also vary in their viewing angle. This tells you how much the beam of light spreads out. Standard LEDs have a viewing angle of 60° but others have a narrow beam of 30° or less. ... Study Electronics...
www.kpsec.freeuk.com/components/led.htm
accepted for publication 29 March 1999 Double-heterostructure GaAs/GaAlAs light-emitting diodes LEDs have been fabricated with the emitter regions beryllium doped to 2 1019 and 7 1019 cm 3. The 7 1019 cm 3 doped emitters have an internal quantum ... Although in this study we have demonstrated the best results to date,
optoelectronics.eecs.berkeley.edu/ey1999apl7421.pdf
This study has been completed. ... Photomodulation is a process which manipulates or regulates cell activity using light sources without thermal effect. Different studies have investigated the use of non-thermal low dose light emitting diode (LED) array for improving the appearance of photo aging damage.
clinicaltrials.gov/ct2/show/NCT00818311
MATERIALS AND METHODS: An investigational Biolux extraoral light emitting diode phototherapy device was used daily for 21 days postextraction and socket grafting with HA (Osteograf LD300) unilaterally. Bone regeneration of the phototherapy-treated and nontreated side was compared in same-mouth extraction sockets.
bonegrafts.researchtoday.net/archive/4/6/1543.htm
BioInfoBank Library :: Development of visual evoked potentials in neonates. ... We used a signal averager with light emitting diode goggles as the photostimulator to study the development of the visual evoked potentials in 40 normal neonates of between 23 and 42 weeks' gestation. All except two infants of less than 24...
lib.bioinfo.pl/pmid:4091582
BioInfoBank Library :: [A comparative study of the effects of laser and light-emitting diode irradiation on the wound healing and functional activity of wound exudate leukocytes] [Molecular and cellular mechanisms of the low intensity laser radiation effect] [The role of blood plasma porphyrins in the effects of He-Ne-laser ...
lib.bioinfo.pl/pmid:16358796
We used a signal averager with light emitting diode goggles as the photostimulator to study the development of the visual evoked potentials in 40 normal neonates of between 23 and 42 weeks' gestation. All except two infants of less than 24 weeks' gestation had replicable visual evoked potentials.
www.fetalneonatal.com/cgi/content/abstract/60/12/1166
Study Group: Light Emitting Diode Evaluators ... Leading Experts in Light Emitting Diode Evaluators Study Group have not participated in any upcoming seminars. ... Home > Technology, Media & Telecom > Study Groups > Light Emitting Diode Evaluators...
www.glgroup.com/Study-Group/Light-Emitting-Diode-Evalua... www.glgroup.com/Study-Group/Light-Emitting-Diode-Evaluators-4749.html
CiteULike is a free online bibliography manager. Register and you can start organising your references online. ... by: Xue-Yin Jiang, Zhi-Lin Zhang, Wen-Qing Zhu, Shao-Hong Xu ... Journal of Physics D: Applied Physics, Vol. 38, No. 23. (7 December 2005), pp. 4153-4156.
www.citeulike.org/article/402083
The spectra of these devices indicate that the recombination zone is chiefly located near the NPB/TBADN interface, implying that TBADN is capable of electron transport. The inserted DCJTB at TBADN/Alq interface has ... Study of blue organic light emitting diode by inserting a red dye ultra thin layer at the emitting layer...
www.iop.org/EJ/abstract/0022-3727/38/23/002