A Survey of Light Emitting Diode (LED) Display Board.

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Curing efficiency of high-intensity light-emitting diode (LED) devices.

We evaluated the curing efficiency of 4 high-intensity light-emitting diode (LED) devices by assessing percentage of residual C=C (%RDB), surface microhardness (SM), depth of cure (DC), percentage of linear shrinkage-strain (%LS), and percentage of wall-to-wall contraction (%WWC). The light-curing units tested were a QTH light, the Elipar TriLight (3M/ESPE), and 4 LED devices - the Allegro (Den...

متن کامل

Multiobjective optimal design of Light Emitting Diode (LED) lightings

In this paper, a Pareto multiobjective optimization is performed to design new luminaires, finding the optimal forward current, number of LEDs and proper heatsink by taking into account the cost, the energy consumption and the impact on the environment (life cycle analysis from cradle to grave). Three commercialized white LEDs have been studied and modelled in terms of optical, electrical, ther...

متن کامل

To an Isolated Light Emitting Diode (led) Target

Steady-state accommodative responses to a standard white LED light were compared to a high contrast reduced Snellen chart with normal room illumination under binocular and monocular viewing conditions. These responses were also compared to a diffuse transilluminator beam. Targets were presented at 2m, 0.5m, and 0.25m test distances, and the accommodative responses were objectively assessed. Dur...

متن کامل

Is light-emitting diode phototherapy (LED-LLLT) really effective?

BACKGROUND Low level light therapy (LLLT) has attracted attention in many clinical fields with a new generation of light-emitting diodes (LEDs) which can irradiate large targets. To pain control, the first main application of LLLT, have been added LED-LLLT in the accelerated healing of wounds, both traumatic and iatrogenic, inflammatory acne and the patient-driven application of skin rejuvenati...

متن کامل

Clinical experience with light-emitting diode (LED) photomodulation.

BACKGROUND Light-emitting diode (LED) photomodulation is a novel nonthermal technology used to modulate cellular activity with light. OBJECTIVE We describe our experience over the last 2 years using 590 nm LED photomodulation within a dermatologic surgery environment. METHODS Practical use of nonthermal light energy and emerging applications in 3,500 treatments delivered to 900 patients is ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Indian Journal of Science and Technology

سال: 2013

ISSN: 0974-6846,0974-5645

DOI: 10.17485/ijst/2014/v7i2.3