The integration formula to calculate the transmittance of the wedge filter at the given area is derived via that of the uniform area of the same. film structure. The expanding of the pass band, the pass band reduction and the overlap of the pass band of adjoining areas are further analyzed.
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程实平,张凤山,严义埙.多光谱带通渐变滤光片透射率特性分析[J].红外与毫米波学报,1993,12(5):]. CHENG SHIPING, ZHANG FENGSHAN, YAN YIXUN. ANALYSIS OF TRANSMITTANCE OF MULTI-SPECTRAL BAND-PASS FILTER[J]. J. Infrared Millim. Waves,1993,12(5).]