| 摘要 |
<p>An embodiment of an overhead projector (10) including an outer enclosure including a projection stage; a plurality of hazardous components; and an inner enclosure (30) located inside of the outer enclosure, wherein the inner enclosure meets both fire and electrical enclosure requirements and the inner enclosure encloses all hazardous components. The inner enclosure is a modular electrical and optical assembly located inside of the outer enclosure including a main shell compartment, the hazardous components including a transformer (50) having a core and a primary winding placed inside the main shell compartment a projection lamp (44) electrically coupled to the first winding. The projection lamp has a light source portion and electrical contacts. The projection lamp is optically aligned with respect to the stage.</p> |
