Compact fluorescent often has a warm up time. While it may immediately come on at a decent level, it does take up to 10 minutes to come to full brightness. Luckily if you turn it off and on again, it does light right back up.
One of the current challenges in the LED industry is transformer compatibility for low-voltage LEDs. MR16 LEDs are at the forefront of the issue, but not an issue with the LED MR16s themselves. The issue exists with the transformers.
As seen in the figure 1 below, white light falls along the Planckian Locus (or black body locus) on the Chromaticity Diagram. This means that depending on where the white light falls along the black body locus, the light can be bluer or yellower than another white light.
With traditional lamp sources like halogen, fluorescent and metal halide, a selection of lamps (usually somewhere around 100 samples) are burned continuously at a given voltage and position. When 50% of these lamps have ceased to function, then this determines the lamp life for that particular lamp.
Proper aiming and adjusting of the accent lighting at a museum or retail store is key to creating an exciting and dynamic environment. Keeping that focus is just as important. With halogen lighting, the lamps need to be replaced several times a year.
Why doesn't Solais provide LM-80 results on their lamps? That's because LM-80 refers to the LED itself, outside of its environment.
The most common mistake in lighting terms associated with the quantity of light is between the intensity of a light source and its total output. The total output of a light source is described in "lumens".
LED sources are a new solution for virtually all lighting needs and have the potential to change the way we live and consume energy. The largest limitation currently slowing the adoption of LED lighting is simply that it is new and not well understood.
We recently evaluated the Solais LED LR38 (21W, 1000 lumens) against a PAR38 halogen (90W, 130V, 1310 lumens) for a high-profile client. The client had some initial concerns due to the apparent large difference in lumens between the two products, but this was simply because they did not have a proper understanding of the importance behind the 130V rating.
LED lighting has numerous characteristics that make it unique from conventional incandescent and fluorescent light sources. Understanding these characteristics and the technical capabilities of the technology will help one understand the true potential of LED lighting.