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. Author manuscript; available in PMC: 2010 Jul 13.
Published in final edited form as: Lab Chip. 2010 Apr 19;10(11):1417–1428. doi: 10.1039/c000453g

Fig. 1.

Fig. 1

(a) A lensfree holographic on-chip microscope that weighs ~ 46 grams is shown. It utilizes an LED source (at 591 nm) with an aperture of ~50–100 µm in front of the source. The LED and the sensor are powered through USB connection from the side. This lensless holographic microscope operates with a unit fringe magnification to claim the entire active area of the sensor as its imaging field of view (~24 mm2). For different designs refer to Supplementary Fig. 1. (b) Schematics of the incoherent lensfree holographic microscope shown in (a). Drawing not to scale. Typical values: z1~2–5cm, z2<1–2mm, D~50–100 µm.