Flat Top distribution by means of 2 arrays - aµs microoptics

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Flat Top distribution by means of 2 arrays

 This optical scheme allows for 2 positive MLAs or single monolithic 2-array system of  positive or negative or both positive and negative microlenses
Wavelength..........................
λ
Lens pitch.............................
PA
A2 focal length......................
fA2
Lens FL focal length..............
fL
Flat Top size........................
DFT
Fresnel Number....................
FN


FN < 1  
- severe diffraction effects
1 < FN < 5
- diffraction effects
5 < FN < 20
- acceptable
FN > 20
- excellent
A rather long focal array, if its fabrication is technologically not appropriate, can be replaced by a monolithic 2-side array of positive or negative (or combination of both) microlenses.
© [aµs] 2013
Last update 04.12.2017
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