| 摘要 |
<p>A light source device containing: a discharge lamp; an elliptical mirror that reflects light radiated from the discharge lamp; a box-shaped casing that houses the discharge lamp and the elliptical mirror, and is provided with a light-emitting emission aperture on the front surface panel; and an amount-of-light adjustment unit that includes a throttle mechanism for controlling the amount of light, a shutter mechanism for controlling the emittance and the blocking of the light which passes through the throttle mechanism, and an approximately box-shaped case member for supporting the shutter mechanism and the throttle mechanism. The light source device is characterized in that: one side-surface panel of the casing includes an attachment opening into which the amount-of-light adjustment unit can be inserted; the case member includes, at the far end in the insertion direction of the amount-of-light adjustment unit, a cover that can cover the attachment opening; and the amount-of-light adjustment unit, when inserted into the casing from the attachment opening, can be attached to the one side-surface panel of the casing such that the cover covers the attachment opening.</p> |
