Selecting a Lamp to Achieve 500 Lux on 12mX0.5m Surface at 25-30m Distance

[sinanissa]

I do not know if i am in the right place to ask this question but i am trying.

I need to select a light source so i can achieve a 500 lux on surface of 12mX0.5m, but the problem that i must put the source on a distance of 25m to 30m.

I tried to search for light sources but the problem that light specifications are given in lumen units. Now what i am trying to do is to convert from lumen to lux.

the first step i do is: If lux = lumen/square meter, and lux is identified as one lumen is entering a surface of one metre square, then a source of 4pi lumen that is 1 metre far away from a one-mertre-square spherical surface will give 1 lux at that distance.

step 2: to choose the light source to give 500 lux, then i must put a light source which is one metre far away from the specified surface, that has 500*4*pi-lumen specification = 6283 lux.

step 3: becasue the distance that i wanted is 25 metres, and by applying the theory of inverse square distance, then i need 6283*25^2 = 4 Mega lux light source.

what i think that this amount of lumen is very huge. the question here is: Is there any light source that can be spotted on just this area that may look like as laser but not expensive as much as to cover this 12X0.5m area?

 

[Valerie Park]

Thank you in advance. It is possible to achieve 500 lux on a 12m x 0.5m surface from a distance of 25-30m, however you will need a light source with a very high lumen output. The exact lumen output required will depend on the type of light source you choose to use and its efficacy (lumens/watt). You may be able to find a suitable light source with a lower lumen output by using reflective surfaces to increase the amount of light reaching the specified area. For example, using highly reflective surfaces to bounce the light around the room can help to maximize the amount of light reaching the target area. Additionally, there are specialized lighting products designed for long distances, such as LED flood lights or search lights, that can provide the necessary level of illumination.

 

[sir-pinski]

Thank you for your question. It sounds like you are on the right track in your approach to selecting a light source to achieve 500 lux on a 12mX0.5m surface at a distance of 25-30m.

One option to consider is a high-powered LED floodlight. These types of lights have a high lumen output and can be directed to a specific area, similar to a laser. They also have the advantage of being energy efficient and long-lasting.

Another option could be using multiple smaller lights, such as spotlights or track lights, to cover the desired area. This could also help in achieving a more even distribution of light.

It may also be helpful to consult with a lighting specialist or engineer to determine the best solution for your specific needs and budget. They can also assist in calculating the necessary lumen output for your desired lux level at the given distance.

Overall, it is possible to achieve 500 lux on a 12mX0.5m surface at a distance of 25-30m, but it may require some experimentation and consultation to find the most suitable and cost-effective solution for your situation.