Narrow Band UVB Light (NB-UVB) Lights

UVB Narrowband Phototherapy Lamp Technology

A UVB narrow band lamp emits light energy.   Narrowband UVB phototherapy (UVB-NB) comprises a subset of the UVB wideband, or broadband, spectrum centered at roughly 311 nm. This is less than 1% of total range of wavelengths from sunlight. Narrow band UVB has been shown to be the optimal part of the UV light spectrum which slows growth of psoriasis lesions.   Since the narrowband wavelength is shorter than broadband, exposure time to narrow band UVB phototherapy treatment lights can be increased. The result is powerful targeted phototherapy treatment.

Another clear advantage of narrowband UVB is that skin is most sensitive to erythemic response, (sun burning) at 297 nm, so narrow band phototherapy nearly eliminates this problem as shown in the chart below.