Projection Devices, Continued
Replacing a
To remove and replace a bulb in an opaque projector, use the following
bulb
tables:
Overhead
projectors
Overhead projectors project light through a transparent visual onto a mirror
that reflects that image to a screen. Use an overhead projector for teaching,
briefing, and as a draftsman’s aid in enlarging or transferring an image to
another surface. Major advantages of the overhead projector are portability,
being able to write directly on the visuals during projection, and using the
projector in dim classrooms. Limitations include a distracting blower motor
noise, the visuals must be transparent to project, and the projector requires
close placement to the screen.
Continued on next page
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