| 摘要 |
PURPOSE:To achieve the regulation of the optical axis without adjustment by putting together two triangular prisms in symmetry with a specified relationship set for interior angles and fraction factor so as to form a multilayer interference filter on a joined surface. CONSTITUTION:A prism block array 4, a lens array 5 and an optical fiber array 6 are arranged sequentially on the plane. The prism block array 4 has prism blocks 7a, 7b and 7c of the same shape arranged in a row. The individual prism blocks are each composed of two prisms of the same shape stuck together and an interference filter 12 is formed on the boundary surface thereof. It is so arranged to meet a specified relationship betwen two interior angles of the prism, the refraction factor of material of the prism and the refraction factor of the surrounding medium. |
