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. 2023 Dec 21;21(1):132–141. doi: 10.1038/s41592-023-02098-1

Extended Data Fig. 9. Field uniformity compared among three objectives.

Extended Data Fig. 9

(a) Images of a fluorescent slide at 1 mm depth using the Cousa, the Thorlabs 10x/0.5NA, and the Nikon 16x/0.8NA objectives with the laser beam scanning ±5° at the back aperture. The brightness of each image was normalized to the peak brightness, individually. Scan angles of ±5° correspond to a ~ 3 mm-wide field-of-view for the Cousa and Thorlabs 10x objectives, and a ~ 1.8 mm-wide field-of-view for the Nikon 16x objective. (b) The profiles of normalized brightness along the colored, dashed lines in (a). Note that the Cousa and the Thorlabs 10x/0.5NA have similar field uniformity, despite the Cousa being >12 mm further from the focal plane. The field brightness drops off rapidly from the center for the Nikon 16x/0.8NA objective.