Blacklight Blue Lamps (BLB) ,black and bule lamp

These lampseffciently emit near ultraviolet rays at 315nm-400nm which have strong photochemical fluorescent effects.
They are special deep blue filter glass which absorbs visible rays and transmits near ultraviolet rays and two types of phosphor are used with radiation peak at 352 nm and 368 nm, respectively.
They are used for tests, insections, examinations, and investigations in various fields, as well as for stage illumination in theaters and nightclubs, advertisements and sign boards.