Type A features Nikon 10× zoom optics with the widest FOV, the longest working distance and the highest NA 0.11. TZ has LED episcopic, diascopic (for higher magnification) and darkfield illuminators. Type 4 comes with LED episcopic and diascopic illuminators, as well as an LED 8-segment ring illuminator with a 50-degree incident angle. Type 4 and TZ have Nikon 15× and 120× zoom optics with higher magnification and a higher NA 0.46. High magnification zooming heads: type 4, TZ
They come with LED episcopic and diascopic illuminators, as well as an LED 8-segment ring illuminator with three incident angles.
Type 1, 2 and 3, have Nikon 15× zoom optics with a long working distance, wide FOV and a high NA 0.35. Standard magnification zooming heads: type 1 - 3
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