| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve the problem in which: in a lens-interchangeable projector, an interchangeable lens has various angles of view, and projection light is sometimes projected to an unexpected portion due to the multiplier effect with a field angle adjustment (zoom) function; the unexpected projection light is glaring and should be dealt with; and discontinuity of angles of view before and after the interchange of the lens imposes inconvenience to a user.SOLUTION: There is provided a lens-interchangeable projector that can adjust an angle of view, and includes lens type detection means for detecting an attached first lens and lens type storage means for storing a second lens before interchange. When the lens-interchangeable projector has determined that the first lens is different from the second lens, adjusts the zoom of the lens to perform zoom adjustment in a direction to reduce the projection area or a direction to make it closer.</p> |
