Application example

Adapted illuminations for indoor cultures

Here is a concrete application example of the reflector problem. The goal is to transform a random source density of light into a uniform illumination, in the context of indoor culture.
The source is colinear and its support is circular, the target is rectangular and the desired illumination is uniform. According to the notations introduced in the PIR0 configuration schematic, the following examples will be executed with the following parameters:
Latex formula
 

heliospectra

 

    • Theoretical case

Let us first consider the source density is uniform. A first calculation of the reflector shape leads logically to a uniform illumination of the target.

uniformSource

Uniform density source

optimizedResult

Target illumination after resimulation

 

    • Practical cases

In practice, the source density is not uniform. Let us assume that the real source density is gaussian and that we use the same reflector as in the theoretical case. The result would be the following:

Source à densité gaussienne

Gaussian density source

non_optimized_reflector

Target illumination after resimulation

 

In the case of even more disturbed source densities:

density

Very disturbed source density

non_optimized_reflector

Target illumination after resimulation

 

 

 

 

 

 

 

 

 

density2

Very disturbed source density

non_optimized_reflector2

Target illumination after resimulation

 

    • Reflector correction

Source density profile beeing known, we are able to adapt the reflector shape in order to get an effectively uniform culture illumination.

density2

Very disturbed source density

 

optimized_reflector2

Target illumination after resimulation