Focal distance and numeric aperture

The focus or working distance is 6.5 mm. In other words, you can 'look' 6.5 mm 'into' the substrate - if required. Thus formats other than flat planar glass slides can be inserted and focused. Even with this enormous focal distance the numerical aperture (NA) of the special huge lens (0.6) is still high in order to cover a reasonable field of the emitted light providing the high sensitivity required for microarray detection.

Independent of this the maximum height of the 'carrier' on the table should not exceed 15 mm for sample loading.

Detection principle

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