Solatube International Inc., Vista, Calif., offers its proprietary Optiview diffuser as an option on its Brighten Up™ Series residential tubular skylights. By deflecting the sky’s image – whether blue on clear days or gray on cloudier days – the diffuser creates an overhead window effect that helps connect the building’s occupant with the outside environment. The diffuser, featuring a high-performance frensel lens material, brings the color and the light of the sky into the interior.