| 摘要 |
PURPOSE: To absorb a specific wavelength and minimize the loss of the transmission factor of a visible light, and then obtain the optical filter of effectively protecting an eyes from a laser beam by composing of that a transparent carrier which a specified four kinds of absorbent are dispersed is used. CONSTITUTION: Four absorbents such as an absorbent consisting of panazyl- phthalocyanine sulfonamide, an ultraviolet radiation absorbent having a widely absorbable zone in the region of the ultraviolet radiation, the dialkyl sulfonamide derivative of a solvent orange 60 or 12-H-naphthopelynone, and a tris(palladiethyl aminophenyl) aluminum hexafluoroantimonate, a tris(p-diethyl aminophenyl) aluminum hexafluorarsenate, a tris(p-dibuthyl aminophenyl) aluminum hexafluoroantimonate and a tris(p-dibuthyl aminophenyl) aluminum arsenate are made so as to preferably become an optical density at 3.5, and are dispersed upon a transparent carrier so as to keep the transmission factor of a visible light to be at least at 12%. Thus, an eye-harmful radiation from various lasers is absorbed and then can secure the sufficient field of view. |
