LED panel light
Led panel lights are becoming the most popular led lights in the interior lighting design while the Led lighting technology is developing.
Components of the LED panel light:
1. LED Panel Light Body Frame
LED panel light body frame is used for covering the edge of the light. The frame provides the inner protection and thermal conductivity. Aluminium is the common material used for the frame. The advantages of the aluminium are the good heat dissipation and sleek outlook.
Nowadays, the PVC is the new material which is introduced into the market. Compared with aluminium, PVC made-up frame is more excellent on security and poorer on heat conductivity.
2. LED Panel Light Light Source.
LED 2835 is widely applied in LED panel light because of the advantages of high luminous output and lower cost.
Different quality of LED chipset and efficacy plays a big part in brightness, power consumption and lighting quality.
3. LED Panel Light Guide Plate
Light guide plate is the important component for LED panel light. Low quality LED panel lights will have non-uniformity of light and dark spots while it is operating. Understanding the types of plastic and refractive index is key to having a better LED panel light.
4. LED Panel Light Diffuser
LED panel light diffuser directly affects the light output. Panel light diffuser is made from PMMA or PC. PMMA-made diffuser is high on efficacy---92%. PC-made diffuser is excellent on oxidation resistance. PMMA is considerably used currently in the market.
5. Reflective Plate Reflector
It is applied to improve light efficacy to achieve the high brightness. It is made from translucent nanoscale material, its reflective rate could reach 92%.
6. LED Panel Light Power Supply
Nowadays, LED panel light with LED driver system is commonly acknowledged in the market. The drivers could regulate the voltage and current from the main power supply to light up the lights. The use of high quality driver directly affects the lifespan of the LED panel light.
7. Installation Accessories
Suspension wire, mounting bracket, screws,etc. are also used in LED panel light installation.
A great LED panel light should be equipped with all the good quality components, such like the body frame, LED chips, diffuser, reflector, drivers and also the accessories. Thereafter, it all goes into understanding the standard assembling and manufacturing process of the LED panel light.
Article by Mr Luo Tianhan (Temasek Poly Year 3 Clean Technology student, 2017)
ANALOG VS DIGITAL LED STRIP
There are two basic kinds of LED strips, Analog and Digital. They are controlled differently.
ANALOG LED STRIP
Analog strips come in mono (one color) or RGB (full color spectrum). They can be cut into small segments. The segments are marked by metal contact pads and sometimes have a scissors icon screen printed right on them
For each segment the LEDs are wired in series, which means the operating voltages are added up, giving the higher voltage needed. All the segments are wired in parallel, so they get all get the same amount of voltage all the way down the strip, but the current draw adds up depending on the length of the strip.
All the LEDs on the strip will act as one, they are non-addressable. One way to tell by sight is that they do not have any driver chips that you can see on the strip (that would be digital!)
DIGITAL LED STRIP
Digital strips come with RGB LEDs and have a driver chip on the strip that control the LEDs individually. These are also called individually addressable or just addressable.
They also come in segmented, where they can be cut down to bite-size lengths. These strips take 5 volts, so they can run straight off a microcontroller. They will power up when attached to 3.3 volts, just not as bright.
Addressable LED strips are usually controlled using micro controller to program cool patterns and make them reactive to sensors and switches. Most of the work is in the software. In addition, Digital strips get their information from one data-in pin or two data-in and clock-in pins, dependent of what strip is used. The datasheet for the pinout diagram, voltage ratings and other useful information varies according to the type and the brand.
Article by Ms Jesslyn (Temasek Poly Year 3 Electronics student, 2017)
Maintaining colour consistency in LED lightings and light source has always been a challenge. It seems strange that we cannot maintain consistent lighting color tone for a machine made hardware.
After producing the LED chipsets, they are stored or group together in different bin. Each bin can be sorted by different methods, one being how close they are of the same colour tone.
With the variable nature of the colour produced by white light LEDs, one commonly used metric for expressing the extent of the colour difference within a batch (or bin) or LEDs is the number of SDCM (MacAdam) ellipses steps in the CIE colour space that the LEDs fall into.
In this situation as a manufacturer and LED Lighting OEM specialist, we can minimise inconsistent LED lighting colour tone by relying on SDCM (Standard deviation colour matching) or MacAdam Ellipse when selecting the LED chipset to be used in our lighting products.
If the chromaticity coordinates of a set of LEDs all fall within 1 SDCM (or a “1-step MacAdam ellipse”), most people would fail to see any difference in colour. If the colour variation is such that the variation in chromaticity extends to a zone that is twice as big (2 SDCM or a 2-step MacAdam ellipse), you will start to see some colour difference. A 2-step MacAdam ellipse is better than a 3-step zone, and so on.
Through our extensive research and trials on different optical lens, we'd like to share the different lighting effects shown above.
By adopting the right lens type, we can alter a typical mass market LED lighting to fit all environment and scenario. This will allow museums and mid-high end retailers to purchase the same lighting in bulk and adjust the lighting accordingly to fit your display.
Inevitably, this may reduce maintenance cost since workers can easily be trained to work with 1 type of LED lighting. The facility owners can also keep a simpler ranger of replacement components, thus saving on holding costs.
No matter how good is the interior decor, things will be different without the right lighting.
Do contact us if you wish to learn more about how different lighting effects can be affordably achieved through appreciating the available hardware in the lighting industry. Glad to share our experiences in our past public and private establishment projects.
Some LED Track lights that we sell has rotatable lens. This allow one to easily change the beam angle and flare size to suit different display with the same LED track lighting.
Combine with our 0 - 100% dimming capability embedded within the LED Track light; you would have gotten the most perfect lighting in different senarios with the same tracklight.
This makes it efficient and hassle free in selecting what LED track lights to buy.
LED lighting has become the preferred choice of lighting for any environment. The rapid development of LED lighting technology and great reduction in prices has often made it the first consideration for any projects.
The question we are working hard is always how to integrated and apply LED lighting suitably in each and every different environment. Today, we touch on the importance of optics in any LED lighting luminaire.
Based on our experience, Asian countries (JAPAN, KOREA, TAIWAN, CHINA) mostly focus on LED light source and in the semi conductor production. It is the European countries that focus on the optics. Through the following, we can alter any light source easily;
1. Different thickness of the optic
2. Having lens within lens (Multiple layer of optics)
3. Convex or Concave fundamental
4. The polarising effects from lens
5. Shape of the optics
Surely it cannot be one size fits all if the end user is particular how the light source will have an impact on the items displayed. All the above changes the intensity and direction of lights. This will cause differing types of light entering our eyes giving a different perception to how things look.
Do contact us to find out more and to have a first hand factory tour for a demonstration on how optics affect the lighting on objects. We'll be glad to share more then!
OLED is increasing heard and advertised as the latest innovation for our flat television. It sounds similar to the LED lighting we always buy for our homes. So are they the same or not?
Using the popular flat screen TV as an example, we have the following;
1. LEDs lighting devices are generally a solid state semiconductor or object where people can see and touch. (We all probably imagine a diode to be a solid state item.)
2. OLEDs are organic compounds that generally human eye is unable to detect unless put under a chemically treated film. (Recall your chemistry lesson in secondary school where you mix elements to derive SALT e.g. copper sulphate etc...)
LED is just an abbreviation for 'light emitting diode'. It does not refer to the state matter (Solid, liquid or gas) in the above comparison, though we generally take it to be a solid object.
The power of OLED;
Refer to our blogpost on 31/10/14 where it can be applied on the cabin of an airplane that mimics the night sky outside.
OLED being organic compound is so thin (Thin as a plastic film, since it is sandwich between) that it can eliminate a hugh problem when it comes to creating space for your lights. Current LED strips are about 2-3mm in height. OLED is definitely less than 1mm.
OLED lights up when electricity is pass through it similar to LEDs. In relation to TVs, OLED is the display itself while LED acts as a lighting instrument for our LCD screen.
The above points are based on personal research to enhance our LED lights manufacturing expertise and should not be relied upon solely as definitive. We stand to be corrected and would love to bring the discussion forward with whoever is interested.
Having a problem with spoilt LEDs, LEDs turning yellow or having inconsistent LED light colours within months?
Through working with Nichia Corporation (World no.1 LED chipset manufacturer) from Japan, we came across one of their publication discussing the issue above. The article focuses on lumens maintenance and colour maintenance
In summary and simplicity, some reasons mentioned are;
1. LEDs have plastic components that contain Benzene ring that degrade with photon energy - That makes the white portion of LED packages turn yellow.
2. Heat from the LEDs in operation.
1. Use thermoset composite and inorganic materials for better reflectivity and stronger structural stability.
The Nichia white paper / article has been uploaded with permission at the following link;