Modulation pattern calculation device, light control device, modulation pattern calculation method and modulation pattern calculation program

摘要

A modulation pattern calculation apparatus 20 includes an iterative Fourier transform unit 23a, a filtering process unit 23b, and a modulation pattern calculation unit 24. The iterative Fourier transform unit 23a performs a Fourier transform on a waveform function including an intensity spectrum function and a phase spectrum function, performs a replacement of a temporal intensity waveform function based on a desired waveform after the Fourier transform and then performs an inverse Fourier transform, and performs a replacement to constrain the phase spectrum function after the inverse Fourier transform. The filtering process unit 23b performs a filtering process of cutting a part exceeding a cutoff intensity for each wavelength, on the intensity spectrum function in a frequency domain. As a result, a modulation pattern calculation apparatus, a light control apparatus, a modulation pattern calculation method, and a modulation pattern calculation program capable of easily calculating an intensity spectrum to bring a temporal waveform of light close to a desired waveform are realized.