Flat Top distribution by means of 1 array - aµs microoptics

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Flat Top distribution by means of 1 array

 This optical scheme allows for single MLA of either positive or negative microlenses
Wavelength..........................
λ
Lens pitch.............................
PA
Array A focal length...............
fA
Lens FL focal length..............
fL
Flat Top size........................
DFT
Fresnel Number....................
FN
FN < 10  
- severe diffraction effects
10 < FN < 50
- diffraction effects
50 < FN < 100
- acceptable
FN > 100
- 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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