Abstract: A scanning imaging method includes splitting an optical beam into a reference beam and a scanning beam, generating an interference map, and processing the interference map to produce a reconstructed image of a sample. Generating the interference map includes, for each of a plurality of sections of the sample, generating a respective interference-map element of the interference map by: (i) illuminating the section with the scanning beam to generate a plurality of scattered beams, each scattered beam corresponding to a respective spatial frequency of the scanning beam, (ii) attenuating the reference beam, (iii) generating a plurality of interference signals at least in part by interferometrically combining the plurality of scattered beams and the attenuated reference beam while modulating a phase difference between the reference beam and the plurality of scattered beams, and (iv) detecting the plurality of interference signals to yield the respective interference-map element.

Abstract: A hanger bar for a recessed lighting fixture mounting is disclosed. The hanger bar includes a rail portion having a wall that is in a first plane. The hanger bar further includes a first end portion disposed at a first end of the rail portion and a second end portion disposed at a second end of the rail portion. Each of the first end portion and the second end portion includes a first tab extending from the rail portion in a second plane that is substantially perpendicular to the first plane. Each of the first end portion and the second end portion further includes a second tab extending from the rail portion and a notch that is substantially below the first tab. The second tab extends beyond the first tab, and the notch is partially bounded by an edge of the second tab.