发明授权
US5508853A Optical filter 失效
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Optical filter
摘要:
An optical filter for absorption of electromagnetic radiation of wavelength 532.times.10.sup.-9 m with excellent photostability properties is provided by a polymeric host material such as polycarbonate incorporating the absorbing compound 5, 10, 15, 20 tetrakis (4-methoxyphenyl)-21H,23H porphine palladium (II).
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