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2. Projectionist - Wikipedia

   en.wikipedia.org/wiki/Projectionist

   Two projectors installed in a changeover configuration. The machine in the background will show the first reel, at the end of which the projectionist will 'change over' to reel 2, which is threaded on the projector in the foreground. If the procedure is performed correctly, the audience will be unaware that it has happened.

3. Movie projector - Wikipedia

   en.wikipedia.org/wiki/Movie_projector

   Simulation of a spinning zoopraxiscope An early projector and seats from a movie theater. The main precursor to the movie projector was the magic lantern.In its most common setup it had a concave mirror behind a light source to help direct as much light as possible through a painted glass picture slide and a lens, out of the lantern onto a screen.

4. Philips DP70 - Wikipedia

   en.wikipedia.org/wiki/Philips_DP70

   The DP70 (DP stands for "Double Projector") was invented and developed by a team headed by Jan-Jacob Kotte of Philips between 1952 and 1954, as part of the Todd-AO system. A core objective of the project was to create a single machine that could project both the Todd-AO 5/70 format and the 4/35 format which was, and was likely to remain, the ...

5. Digital light processing - Wikipedia

   en.wikipedia.org/wiki/Digital_Light_Processing

   A three-chip DLP projector uses a prism to split light from the lamp, and each primary color of light is then routed to its own DMD chip, then recombined and routed out through the lens. Three chip systems are found in higher-end home theater projectors, large venue projectors and DLP Cinema projection systems found in digital movie theaters.

6. RealD 3D - Wikipedia

   en.wikipedia.org/wiki/RealD_3D

   The high-resolution, digital cinema grade video projector alternately projects right-eye frames and left-eye frames, switching between them 144 times per second. [3] The projector is either a Texas Instruments Digital Light Processing device or Sony 's reflective LCOS ( liquid crystal on silicon ).

7. IMAX - Wikipedia

   en.wikipedia.org/wiki/IMAX

   IMAX is a proprietary system of high-resolution cameras, film formats, film projectors, and theaters known for having very large screens with a tall aspect ratio (approximately either 1.43:1 or 1.90:1) and steep stadium seating, with the 1.43:1 ratio format being available only in few selected locations.