So far, the " light engine " has not a very strict and precise definition that many readers do not know in the end what is the light engine . Some people define it as "LED light engine (light engine) is included LED packages ( components ) or LED arrays ( modules ), LED drivers, and other brightness, thermal, mechanical and electrical components of the overall portfolio of the device through a LED lamps matching with conventional connector is connected directly to the branch circuit , the LED lamps designed to not use standard lamp . " this definition looks like it is complete, but often can be confusing , because it also includes" other brightness, thermal, mechanical and electrical components . "
In fact, you can very easily give a definition optical engine : it is all the LED light source and LED drive power combined into one module can be called light engine . It can be a little more popular , the source of all the constant current drive into LED aluminum panel light engine overhauled to become .
Someone called COB LED light engine , is clearly wrong ! Because it is not integrated constant current driver source , there is no "drive" , how can called the " engine" ? .
Species from the power light engine can be divided into DC and AC light engine into two categories. However, the current extensive use of the indoor lamp light engine start , so we pay more attention to AC power light engine .
It is not the LED lamps can also be called light engine it ? Certainly not . Can not be called as the entire automotive engines, automotive powertrain engine , but not equal to cars , plus the shell in order to become car. The need for light engines such products, because all lamps have a variety of looks. Some lamps can even be called art. Take the incandescent lamp , it can be said that it is only the simplest form of light bulbs , at most, plus tiny Christmas lights or candles . But its appearance , but there are a variety of . Crystal Light is especially wide variety of arts and crafts, extremely gorgeous. But the LED must be added the extremely complex constant current source to drive an incandescent equivalent work like ( can be connected to the 220V light ) . If you make the LED light engine , it is also like incandescent lights can be connected to 220V ( of course also need to have its matching radiator ) . One hand, this helps to standardize , it can also greatly ease the housing ( and radiator ) designers to play their best.
A . Benefits of using optical engine
Many people think that the main purpose of promoting the light engine to increase in order to standardize their interchangeability. In fact, this standardization should not only proceed from the light engine , but should be in uniform heat sink and the interface between the light engine start . Take the LED bulb , the need for a unified basically light engine and the radiator size relates specifically to the heat sink screw holes and screw holes the size of the position . Even so specific issues , there are still many difficulties. Because it is the wattage and the heat sink and cooling capacity have a relationship. Therefore, not only from a light engine to promote the benefits of interchangeability to focus .
Light engine can be said to promote the greatest benefits in the following areas .
1 LED lighting manufacturers reduce development costs and shorten the production cycle
Because all LED lamps by optical and electrical specifications developed optical engine manufacturers . Even recommends the corresponding radiator . Lighting manufacturers as long as the light engine mounted to the radiator inside back on. Lighting manufacturers do not even need an experienced optics, electronics engineers , do not need to buy expensive optical and electronic equipment . In other words, you can greatly reduce the LED light engine lamp factory prospective entry limit , but would not compromise the quality of LED lighting products . Of course, this requires the manufacturer of the light engine itself must have a high level of job.
(2) Promotion light engine can greatly accelerate the promotion of LED lamps
Recent years, with the cut-off incandescent , LED lamps will usher in the explosive growth . LED lamp factory mushrooming gush . Although this is an inevitable trend , but it also brings a lot of problems, especially manifested in the quality of LED lamps and various vendors on the good and bad of a price war between the disorder . The emergence of LED light engine can largely solve these problems. Because the quality of light produced by several engine manufacturers decided that the price can not have too much access. This greatly reduces the disorderly competition caused by the friction . Contribute to the rapid development of LED lighting industry .
3 . Improve the overall performance of LED lamps
Such as improving the overall optical efficiency (lm / W), where power efficiency is intended to include the overall light efficiency , including , of course, it is also for the whole lamp shade light transmittance should include ( but this is not by the manufacturer of the optical engine company responsible , but by the production company responsible for the radiator ) . You can also increase the color temperature , color rendering index and other indicators.
4 reduces the cost
At least eliminates the constant current drive source PCB, its production costs.
Currently , the most simple and the most important thing is for the LED bulb light engine . Here we look at the composition of such a light engine .
