Lighting Products and Fixtures Design Sen Lamp by Miwako Tanahashi Sen is a portable lamp that can be displayed and touched like an art object, adding the pleasure of looking to its function as a lighting fixture. sen is composed of two types of linear parts and a fixed ring. By wrapping the central glass bulb with the smaller wire part and the larger part, the sense of depth of light and shadow leaking from the parts is emphasized. The color gradation created by the special method changes depending on the viewing angle and brightness. Since it is cordless and portable, it can be used as a bedside or table lamp, and can also be used outdoors.