| 摘要 |
PROBLEM TO BE SOLVED: To provide a projector having two built-in optical components or more capable of moving forwards and backwards on an optical path while suppressing light quantity loss at a lighting device.SOLUTION: As a result that a cut filter 31 and a diaphragm 32 can be disposed on an optical path in an overlapping manner by sliding movement thereof utilizing a common supporting shaft, a sliding mechanism 33 functioning as a mechanism for moving the cut filter 31 and the diaphragm 32 can be reduced in size by the common supporting shaft and the cut filter 31 and the diaphragm 32 can further be moved forwards and backwards on the optical path in a space saving manner. Hereby, light quantity loss at a lighting device 20 can be suppressed even when a projection state can be variously changed over by enabling the cut filter 31 and the diaphragm 32 to move forwards and backwards on the optical path as two optical components. |
