FIG. 3.

The original image and reconstructed image according to the calculated singular vectors of the reflection matrix. (a) The original microscopic image of two microspheres (with 8 μm diameter) put on the cover glass. (b) The pattern displayed on the SLM while scanning at the central point of the image field, functioning as the annular apodized aperture to generate the Bessel-like beam. The high spatial frequency (31 lines/mm) of the outside and inside gratings makes the outside ring difficult to observe by the human eye. (c) and (d) The recovered image of the microsphere targets under the Bessel-like beam illumination without (c) and with (d) the scattering layer placed ∼1 mm above, respectively.