| 摘要 |
A projector that can project a picture up and down on a screen free from the trapezium deformation, and allows the projection lens to be exchanged with other projection lens by an easy operation from outside of the front panel, without necessitating dismounting of any of the internal structure of projection apparatus. Projection lens shifts its standing up and down in accordance with revolving of a revolving knob disposed on the upper part of the projection apparatus. For the exchange of projection lens, a projection lens can be unscrewed and detached from the outer cylindrical section 9-2 of lens holding member 9 by turning the inner barrel 8 from outside the cabinet at the front. <IMAGE> |
