Light Throw Distance Calculator

Use the multiplying factor.

Light throw distance calculator.

1 metre 3 2808399 feet. Using a digital light meter digital lux meter or lux meter app light meter app on your phone. Lens layout varies dependent on projector. One lux is equal to one lumen per square meter lux lumens m 2.

In this video learn how to calculate the beam distance of a flashlight. Values can be in feet or meters but both values must match. Finding the true range distance capability of your long range flashlights. This means that for each foot of image width the projector needs to be 2 feet away or d w 2 1 2 0.

So for example the most common projector throw ratio is 2 0. For instance if you wish to know the coverage area spot size of a 10 beam mounted 25 feet off of the deck throw distance just enter these two values and click the calculate spot size to find the diameter of the spot. Use this calculator to determine either the size of the circle of light how far away you should place the light or which degree of lens you should use. Find your screen size and throw distance with the projection calculator classic by following these 2 easy steps.

Measureing lux flashlight beam distance throw range yards meters. Here you can calculate the direct relationship between the beam angle diameter of the light circle and the distance to the illuminated object floor table work surface wall picture. 5 for all values except projector output and screen luminance. Or try the projection calculator pro and get recommended screen sizes throw distances room lighting screen brightness seating and projector placement based on your application.

Typically the more lumens a light fixture provides the brighter it is. Then try and figure how far away from the actor the light needs to be throw distance to create a pool of light that is 8 10 feet in diameter at head height we light faces not feet. The further the light has to travel the more it will be dispersed. The calculator helps you to calculate the exact beam angle.

Put in two of the values and then hit calculate to find the third value. First of all divide your set into overlapping acting areas. This little calculator will work for all lantern manufactures whether it be selecon pacific an etc source 4 profile an robert juliat followspot robe moving light its only trigonometry. The calculation result is from the lens center of projector.

Don t try a 3ft image size with a 5m throw distance the answer will be wrong. Multiplying factor x throw distance diameter of area covered mf x t d. Just enter two known values and click the calculate button to calculate the unknown value you are looking for.