Projector

Projector may refer to:

Image projector, a device that projects an image on a surface
- Video projector, a device that projects a video signal from computer, home theater system etc.
- Movie projector, a device that projects moving pictures from a filmstrip
- Slide projector, a device that projects a still image with a transparent base
- Overhead projector, a device that projects a transparent image
- Opaque projector, a predecessor to the overhead projector
- Magic lantern (projector), a historic projection device
- Camera obscura, the historic ancestor to projection devices
- Enlarger, a device used to produce photographic prints from negatives
Ceiling projector, a device used to measure the height of clouds
Projection (linear algebra), a linear transformation of a vector space
Projector (album), an album by Dark Tranquillity
A type of mortar (weapon)
A version control system used in the Macintosh Programmer's Workshop
As a synonym for promoter, e.g. in the phrase "railway projectors"
Projector (patent) is an archaic term in US patent law meaning original inventor to reduce an invention to practice.

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