US Patent 7926967 Headlight devices and methods

A lighting device includes a head assembly, a battery pack, and a light housing. The light housing includes at least one light source and a diffuser lens. The diffuser lens is pivotably coupled to the light housing. The diffuser lens is configured to pivot between a first position in which the diffuser lens diffuses light emitted by the at least one light source and a second position in which a substantial amount of the light emitted by the at least one light source is not diffused by the diffuser lens.