In the early days of your LED re-lamp project, you’ll need to determine whether you’ll be using a Type A, B, or C replacement. The differences in each stem from whether a ballast or driver is being used and how the LED is connected to the power source. How that power gets to your lamp depends on the type of fixtures and ballasts you already have in place.
The lumen’s limits: why old measures of light output don’t always work for LEDs, and what to do about it
Quantifying quality: on measuring good light after the CRI
On the “rebound effect” in energy efficient lighting or why LEDs aren't like other energy efficiency
The brightness you see versus the brightness you read about: on light levels, LEDs, and the shortcomings of the lumen
The industry uses a measure called the "lumen" to measure light volume across light sources. Based on our installations, we believe the better quality the light, the "brighter" a lumen appears. Here we'll explore why we think the lumen fails to indicate brightness properly where LEDs are concerned and what we do about it.
From floor plan to lights on—LEDs in new construction
The LED "dark shadow" problem: a solution for retail and gallery environments
A challenge we often face when replacing halogen lights with LEDs is that “soft shadows” become “dark shadows”. Increased contrast between the lit and unlit sides of a rack, garment, or piece of furniture are a potentially nasty by-product of a directional LED retrofit. Here’s where the issue comes from and how we address it.