Sunday, November 17, 2013

Porcelain LED Decorative Light

Previously, the porcelain combined with examples of LED lights, mostly as a lampshade or with a ceramic base. And this design, the direct use of ceramics as a light carrier, see it glow, like a kind of feeling of light-emitting structures.

Friday, November 15, 2013

Seven Styles Lighting Make a Warm Winter

Black lighting gives a simple atmospheric feeling, so full of mystery bedroom bedside. In this bedroom space, can be particularly drowsiness.

Wednesday, November 13, 2013

LED Material Summary

The following is the relevant material properties and content.

Raw materialPhysical Properties
luminophorSubstrateProduction methodLight colorEmission wavelengthMaximum external quantum efficiencyVisual sensitivity efficiencyAxial luminosity 05mm bulbs
GaP (Zn, O) Ga0.65Al0.35As Ga0.65Al0.3 5As GaAs0.6P0.4 GaAs0.45P0.55(N) GaAs0.35P0.65(N) GaP GaAs GaAlAs GaAs GaP GaP Liquid phase epitaxy Liquid phase epitaxy (SH) Liquid phase epitaxy (DH) Vapor phase epitaxy+diffusion Vapor phase epitaxy+diffusion Vapor phase epitaxy+diffusion Red Red Red Red Red Red / orange 700 660 660 660 650 630 2 7 21 0.15 0.5 0.65 1 2.1 12 0.07 0.35 1.2 30 500 500020 100 300
GaAs0.25P0.75(N) GaAs0.15P0.85(N) GaAs0.1P0.9(N) GaP GaP GaP Vapor phase epitaxy+diffusion Vapor phase epitaxy+diffusion Vapor phase epitaxy+diffusion Amber Yellow Yellow 610 590 583 0.6 0.25 0.2 2 1.1 1.1 300 200 200
GaP(N) GaP(N) GaP GaP GaP GaP Liquid phase epitaxy Liquid phase epitaxy Liquid phase epitaxy Yellow Yellow / Green Pure Green 570 560 555 0.7 0.3 0.2 4.3 1.6 1.36 400 250 200
GaN SiC ZnSe* ZnS a-Al2O3 SiC ZnSe ZnS Liquid phase epitaxy (MIS) Liquid phase epitaxy Liquid phase epitaxy+diffusion MOCVD (MIS) Blue Blue Blue Blue 430 480 480 460 0.1 0.04 0.03 0.01 0.14 0.04 --- 10(10mA) 12 2(2mA) 2(10mA)

Monday, November 11, 2013

Share Israeli Designer’s Work

Tel Aviv, Israel design brand aqua creations recent Milan Design Week in 2011 released their latest lighting design: "molecules" (numerator), "tokonoma" (niches) and "rotini" (thread).

Friday, November 8, 2013

Nine Advantages of LED Strip

1. Pure colors: LED flexible strip or LED bulb adopt high brightness SMD LED as light-emitting element, hence, have the advantages of LED light-emitting element which is pure light color, soft, no glare. Either as decorative purposes, and can cater to lighting purposes.

2. Flexibility: LED strip light with very soft FPC as the substrate, can be bent without breaking, easy to shape, suitable for a variety of advertising and styling.

3. Small heat: LED Flexible Strip light-emitting element is a LED, the single LED power is low, typically 0.04 ~ 0.08W, so heat is not high, can be used as decorative lighting for aquarium without generating a lot of heat caused by rising water temperatures, affecting fish growth.

Wednesday, November 6, 2013

Eight Living Room Ceiling Decoration Design

Ceiling is very important for modern living room decoration. The following share 8 decoration effects of living room ceiling.

Monday, November 4, 2013

Five LED Driver Chip Debugging Techniques

1.      High temperature of chip
This is mainly for high-voltage of the built-in power modulator driver IC. If the current consumption of the IC is 2mA, 300V voltage is applied above the chip, the chip's power consumption is 0.6 W. It will certainly cause the high temperature above the chip. The maximum current of the driver chip is from drive power consumption of the MOS tube. So think about better heat sink.

2.      Power tube high temperature
Power consumption of the power tube is divided into two parts which are switching loss and conduction loss. Note that most of the occasion especially LED electric drive applications, switching damage is much larger than the conduction loss. So try to reduce the frequency, however, you need to know that when the frequency is reduced, in order to obtain the same load capacity, the peak current is bound to large or inductance becomes large, which are likely to cause the inductor into saturation region. If the inductor saturation current is large enough, you can consider the CCM (continuous current mode) to change into DCM (discontinuous current mode), so you need to add a load capacitance.

Thursday, October 31, 2013

How Many Types of Light Emitting Diode

1.      According to the LED light color.
1.1   According to the LED light color, can devided into red, orange, green, blue, white , etc. And some light-emitting diodes include two or three color chips.
1.2   According to the light emitting diode at the doped or non-doped scattering agent, colored or colorless, the various colors of light-emitting diodes can be divided into colored, transparent, colorless and transparent, colored scattering and colorless scattering four types. Scattering of light-emitting diodes is use for indicator.
In general, LED display screen is use red, green, and blue. As common lighting is used white LED.

Tuesday, October 29, 2013

LED Street Lights Avoid Lightning Solutions

Study found several effective ways to prevent LED street lamp damage from lighting.

1.      External lightning protection combined with internal lightning protection
Now the general LED lights exterior are the conductor material which is equivalent to a lightning rod, the design must be installed deflectors and ground network, these systems constitute the external lightning protection system. The system can prevent LED street lights from fire and cause personal safety incidents due to direct lightning. Internal lightning protection system refers to the internal street through the ground, set the voltage protection, and protection of equipment. The system prevents lightning overvoltages and other forms of invasion, destruction caused by the power, which is the external lightning protection system can’t be guaranteed. Between the two are mutually reinforcing and complementary. Internal lightning protection systems in many devices such as housing, access to protected areas and cable, metal pipes, etc. must be connected to the external lightning protection system or set overvoltage protection, and equipotential bonding.


Sunday, October 27, 2013

LED Will Replace Incandescent

In order to reduce carbon dioxide and other greenhouse gas emissions, address global warming, many countries set off a wave of out inefficient incandescent light.

EU 2007 launched a energy saving lamps use plans, the office and street lighting facilities, household or other forms of incandescent lamps made ​​more stringent energy efficiency requirements, target in the phasing out of incandescent in private households previously 2009. Its Member States have adopted a related move, such as the UK announced in 2011 to phase out incandescent; Irish Government has set out a timetable for incandescent lamps; Belgium, Portugal, Switzerland, France has done a similar declaration.
U.S. will phased out the use of incandescent light bulbs from December 2007. Federal standards will be conducted in two stages, the first stage is from 2012 to 2014, banned 100 watts lamps, covering all commonly used lamps, up to about 25-30% energy savings objective. After 2020, the U.S. Department of Energy and other departments will take more mandatory measures. In April 2007, Canada announced in 2012 before phasing out inefficient incandescent light bulbs.