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Figure 4
SEM image showing a silicon lens made using deep reactive ion etching. The aluminium etch mask is still present. Underetch and surface roughness is evident. The parameters for this lens are b = 40 µm, h = 10 µm, = 2. |
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Figure 4
SEM image showing a silicon lens made using deep reactive ion etching. The aluminium etch mask is still present. Underetch and surface roughness is evident. The parameters for this lens are b = 40 µm, h = 10 µm, = 2. |