| 摘要 |
PROBLEM TO BE SOLVED: To make the easiness of manufacturing consistent with securing the positioning accuracy of an imaging device when an eccentric optical prism is applied as an imaging device such as that of an electronic camera, etc. SOLUTION: An optical prism 100 provided with three optical planes 12-14, wherein incident light from a subject made incident on an incident plane 14 suitable for incidence is internally reflected two or more times to be refracted in the optical path and is made to exit outside from a light-emitting surface 12, and forms an image of the object on an image-forming plane 21 arranged outside, and wherein at least either the incident plane 14 or the light-emitting surface 12 consists of an optical plane having a transmitting action and an internal plane reflecting action, is arranged to be used by being coupled with a mirror frame 30 formed to adapt itself to the prism, and projecting parts 90L, 90R for fitting this optical prism 100 in the mirror frame 30 are formed on the side faces 60L, 60R in the directions intersectional to the incident plane 14 and the light-emitting surface 12 respectively. |
