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. Author manuscript; available in PMC: 2016 May 11.
Published in final edited form as: Adv Opt Photonics. 2015 Jun 30;7(2):276–378. doi: 10.1364/AOP.7.000276

Figure 1.

Figure 1

Abbe’s theory of image formation explains how diffracted light from the specimen is collected by an objective lens. Light diffracted at a larger angle than the acceptance angle (θ) of the objective is lost and, thus, so is the spatial information associated with it.