PRISM, IMAGING DEVICE AND LIGHTING DEVICE WITH THE SAME, AND METHOD OF PRODUCING PRISM

摘要

A prism (30) has a prism body (31) formed in a polygonal column shape. At least one of ridges (35) of the prism body (31) is formed as a flat surface (37). Surfaces (32, 33) of the prism body (31) are adjacent to each other with the ridge (35) formed as the flat surface (37) in between them, and the connection section (38) between at least one of the surfaces (32, 33) and the flat surface (37) is rounded.