This study aims to evaluate the effect of LED lighting during incubation of Fayoumi eggs on hatchability and hatch chick performance. The experiment was carried out in three groups with total number of 2100 eggs. Eggs were incubated 24 h of complete darkness (G1); 24 h of complete LED lighting (G2); and 12 h of LED lighting then 12 h of darkness (G3). From the obtained results, there were no ef...

This paper presents the design and develops of voltage acceptability curves for LED lamps. It is done with the mathematical representation of DC bus voltage of LED lamps internal ballast circuit during voltage sags. First, experimental analysis was done to determine the effect of voltage sag of LED lamp. From the findings on the variation of DC bus voltage during voltage sag, a mathematical equ...

The needs for high‐performances display is increased while electronics have been integrated into various materials. Compared to conventional display, micro‐type displays are required with miniaturized and high‐ intensity performances applications, such as AR/VR, smart contact lens. Common light source‐based approach a simple way demonstrate the micro‐display high‐transmittance, resolution color...

We analyze the color performance and system efficiency of three commonly employed liquid crystal display modes with a blue LED-pumped red and green quantum dots (QDs) backlight. Based on the measured QD emission spectra, we can achieve 115% color gamut in CIE 1931 and 140% in CIE 1976 color space, while keeping the same energy efficiency as conventional backlights. Next, we apply multi-objectiv...

Ergophos LLC has developed and tested a new and unique class of illumination devices for mobile LCD displays (including autostereo), microscopy, and medical instruments. The devices are based on semi-planar holograms which deliver laser light with unprecedented accuracy and can be mass produced with conventional technology. The energy efficiency of a laser holographic display panel is a factor ...

A portable instrument for oxygen determination, based on the quenching of phosphorescent octaethylporphyrin by gaseous O(2), has been developed using the fluorimetric paired emitter-detector diode technique (FPEDD). The instrument configuration consists of two light-emitting diodes (LEDs) facing each other, with an interchangeable support containing a phosphorescent membrane in between, in whic...

VR technology has got more and attention in modern society. However, the core of VR, near to eye display technology, is still hard attain people's expectations [1,2]. Micro-LED array great potential due advantage small size, high brightness, resolution, low energy consumption, good monochromaticity compare other technologies. In this paper, we compared with LCD, OLED, LCoS DLP, taking conclusio...