| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens unit capable of reducing an optical axis deviation occurring when an optical system is moved.SOLUTION: The lens unit includes a prism 105 for separation to first imaging light and second imaging light and an inflection optical system 101 and an inflection optical system 102 which form an image of light from an object. The prism 105 includes an incident surface on which the light from the object is made incident, a first emission surface which is a surface parallel to the incident surface and from which the light after passing through the prism is emitted, and a second emission surface which is one surface including a long side of a rectangle of the surfaces perpendicular to the incident surface and from which the light reflected in the prism is emitted. The inflection optical system 101 is attached to form an image of the first imaging light emitted from the first emission surface, the inflection optical system 102 is attached to form an image of the second imaging light emitted from the second emission surface, and the inflection optical system 101 or the inflection optical system 102 is attached to be movable along the surface to which the inflection optical system 101 or the inflection optical system 102 is attached in the longitudinal direction of the surface. |
