略語大辞典 [Opt] 24 LSF line-spread function (光学系の)線広がり関数.line-spread function; a measure to determine MTF(modulation transfer function) or OTF(optical transfer function) of a lens; a performance parameter of a thermal imager; ref. MTF(modulation transfer function), SiTF(signal transfer function 丸善「略語大辞典」JLogosID : 11881139