Lamp assembly with filter producing variable proportions of ultraviolet and infrared radiation

摘要

A lamp assembly comprises an elongate lamp 1 which emits both ultraviolet and infrared radiation. The lamp is disposed within a reflective housing which serves to direct radiation from the lamp towards a moving substrate which is to be dried occurred. An infrared radiation filter is provided in the form of a quartz tube containing flowing water. The housing is provided with two reflector elements which can be pivoted about respective axes so as to enable the relative proportions of ultraviolet and infrared components in the radiation which emerges from the lamp assembly to be adjusted.