How is Lor calculated?

LOR is calculated by dividing the total light output of the lighting fixture by the light flux of inside the lamp.

How do you calculate luminaries?

To determine the needed lumens, you will need to multiply your room square footage by your room foot-candle requirement. For example, a 100 square foot living room, which needs 10-20 foot-candles, will need 1,000-2,000 lumens. A 100 square foot dining room, which needs 30-40 foot-candles, will need 3,000-4,000 lumens.

What is upward light output ratio?

The ULR (Upward Light Ratio) value is the percentage of luminaire flux of a luminaire or a lighting installation that is emitted above the horizontal, where all luminaires are considered in their real position in the installation.

What is light output?

Lumens = Light Output. In simple terms, Lumens (denoted by lm) are a measure of the total amount of visible light (to the human eye) from a lamp or light source. The higher the lumen rating the “brighter” the lamp will appear.

How is luminaire spacing calculated?

How to Calculate Luminaire Spacing

1. Measure the length and width of the area to be lit, then multiply the two numbers to calculate the square area.
2. Divide the space’s square area by the number of luminaries to be installed.

What is a light output?

How is LED light output measured?

In LED lighting, lumens measure the brightness of a light. This is different than Watts, which measure the amount of energy in a light. In other words, lumens measure the amount of light your LED light puts out. The higher the lumens, the brighter the light will be.

How are light fixtures calculated?

Multiply width of room x length of room x 1.5 = amount of total minimum wattage needed (assuming an eight foot ceiling). Divide by 60 to get the number of 60-watt equivalent bulbs required. Then, add up the wattage in each bulb in each fixture to figure out how many light fixtures are needed.