Lighting Products and Fixtures Design Linear Refraction Desk and Ambiance light by Ray Teng Pai Linear Refraction is a desk and ambient light created for a design hotel in Lishui, China. The lamp joins a linear LED tube to a crystal glass base sourced from Pujiang. The base holds a colored inner layer that refracts white light into many hues, recalling a rainbow. Two modes of use are offered. Placed horizontally, the lamp serves as an adjustable reading light. Set upright, the light glows within the crystal base to create a colorful atmosphere. A touch control switches and dims the light, and the last setting is remembered.