As a basic concept, Uchiyama tries to create the ideal light distribution and the elimination of uncomfortable glare by controlling of light, through thorough understanding of light source characteristics.
He believes that the verification process for lighting effect in particular is essential to pursue high-quality lighting. By preparing for the fixture's full scale mock-ups with actual light source, he examines the intensity and color of light, the shadows casting on the objects, as well as the fixture's aesthetic appearance. Such strict design process leads to the creation of simple and functional form, and it finally gives his products a minimalistic beauty of Japanese tradition.
Uchiyama's lighting fixtures, which are created through an accurate calculation of light, are the proof of his design philosophy. He has won the iF Award in Germany and the Good Design Award in Japan for designs created by his unique talent.