| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical element and interferometer where optical axis adjustment is not required, the influence of a vibration is reduced, and miniaturization can be achieved. <P>SOLUTION: An optical element 20 is constituted by sticking respective surfaces with vertex angles in first to fourth triangular prisms 21, 22, 23, 24. The both joint surfaces 21a, 22b of the first and second triangular prisms, the both joint surfaces 22a, 23b of the second and third triangular prisms, the both joint surfaces 23a, 24b of the third and fourth triangular prisms, and the both joint surfaces 24a, 21b of the fourth and first triangular prisms are respectively joined via optical thin films. Each one of the respective optical thin films has a characteristic to transmit or reflect incident light in accordance with the polarization state. The optical element 20 divides an optical path at a first position P1 in the optical thin film and combines the optical paths at a second position P2 in the optical thin film. <P>COPYRIGHT: (C)2012,JPO&INPIT |
