How are light loss factors used in lighting design?
The lighting designer must provide a system that will take into account these conditions so that despite them the lighting system will provide proper quantity of light over time. These conditions are captured as metrics called the light loss factors. Metrics are used to perform how something behaves.
What are the non recoverable factors of light loss?
Some light loss factors are called “non-recoverable” because preventative maintenance generally does not affect the extent of the light loss. These include ballast factor, ambient fixture temperature, supply voltage variation, optical factor and fixture surface depreciation.
How to calculate the light loss factor ( LLF )?
Once all light loss factors are determined, multiply one against the next (A x B x C …) until a final Light Loss Factor (LLF) results that can be used in lighting design calculations.
What do you do when the F Lock Light is off?
When the F LOCK light is off, the alternate commands are enabled. You can choose the mode that you prefer to work in, or you can switch the F LOCK key on and off to access the commands that you use most frequently. The F1 through F12 FUNCTION keys have special alternate commands.
The lighting designer must provide a system that will take into account these conditions so that despite them the lighting system will provide proper quantity of light over time. These conditions are captured as metrics called the light loss factors. Metrics are used to perform how something behaves.
What’s the best way to correct insufficient light?
To correct insufficient light: Replace bulbs on a regular schedule. Old bulbs give less light than new ones so replace them before they burn out. Follow manufacturers’ instructions Clean light fixtures regularly. Dirt on light fixtures reduces the amount of light given off.
Some light loss factors are called “non-recoverable” because preventative maintenance generally does not affect the extent of the light loss. These include ballast factor, ambient fixture temperature, supply voltage variation, optical factor and fixture surface depreciation.
What causes a light fixture to lose light?
As a fixture ages, its surfaces begin deteriorate. Blemishes absorb light instead of reflecting it; shielding materials may begin to discolor due to constant exposure to heat. This light loss factor is difficult to predict.
