Importance

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Abstract

Provided is an image-obtaining device including: an illumination-light generating unit that modulates an intensity of light emitted from a light source, and generates illumination light beams having mutually linearly independent patterns and including modulated illumination light and unmodulated illumination light; an illumination optical system that irradiates different positions on a sample with the illumination light beams generated; a light-detecting unit that detects combined signal light resulting from combining signal light beams generated at irradiation positions irradiated with the illumination light beams, and outputs a combined signal; and a demodulation unit that separates, from the combined signal output, a modulated local signal by using a time integral of a product of a demodulation signal corresponding to the modulated illumination light beam and the combined signal, and separates an unmodulated local signal by subtracting a sum of the modulated local signals from a time integral of the combined signal.

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First Claim