projector

noun5

1. •
   An optical device that projects a beam of light, especially one used to project an image (or moving images) onto a screen.
2. •
   That which projects or launches something.
3. •
   Someone who devises or suggests a project; a proposer or planner of something.

   • So far is it from the kenne of these wretched projectors of ours that bescraull their Pamflets every day with new formes of government for our Church. — 1642
4. •
   One who projects, or ascribes his/her own feelings to others.

   • Projectors attempt to get rid of unwanted feelings, only it does not work; they still experience the unwanted feelings […] — 1982
5. •
   An operator that forms a projection.