35 mm movie projector in operation
Projection screen in a movie theater
Simulation of a spinning zoopraxiscope
Home theater projection screen displaying a high-definition television image
An early projector and seats from a movie theater
An overhead projector projecting onto a pull-down screen
1910's 35mm hand-cranked tinplate toy movie projector manufactured by Leonhard Müller in Nuremberg, Germany.
Inflatable movie screen
35 mm Kinoton FP30ST movie projector, with parts labeled. (Click thumbnail for larger text.)
Mechanical sequence when image is shown twice and then advanced. 
Outer sprockets rotate continuously while the frame advance sprockets are controlled by the mechanism shown – a Geneva drive.
Imaging lens Diastar of an Askania 35 mm movie projector (focal length: 400 mm)
Christie AW3 platter, BIG SKY Industries console, and Century SA projector
nonrewind in Royal – Malmö, Sweden
A diagram of the VistaVision format
A photo of a 35 mm film print featuring all four audio formats (or "quad track")- from left to right: SDDS (blue area to the left of the sprocket holes), Dolby Digital (grey area between the sprocket holes labelled with the Dolby "Double-D" logo in the middle), analog optical sound (the two white lines to the right of the sprocket holes), and the Datasat time code (the dashed line to the far right.)
Simulated wide screen image with 1.96 to 1 ratio as it would be seen in a camera viewfinder or on a theater screen
Simulated anamorphed image with 1.33 to 1 ratio (4:3) as it would appear on a frame of film

A movie projector is an opto-mechanical device for displaying motion picture film by projecting it onto a screen.

- Movie projector

Different markets exist for screens targeted for use with digital projectors, movie projectors, overhead projectors and slide projectors, although the basic idea for each of them is very much the same: front projection screens work on diffusely reflecting the light projected on to them, whereas back-projection screens work by diffusely transmitting the light through them.

- Projection screen
35 mm movie projector in operation

2 related topics

Alpha

Modern cinema auditorium in Madrid, Spain

Movie theater

Building that contains auditoria for viewing films (also called movies) for entertainment.

Building that contains auditoria for viewing films (also called movies) for entertainment.

Modern cinema auditorium in Madrid, Spain
Rodgers Theatre in Poplar Bluff in Missouri. This Art Deco-style theater opened in 1949.
The view from the projectionist's booth at Ultimate Palace Cinema in Oxford. The projector is displaying the 1997 Universal Pictures logo.
A cinema auditorium in Australia
The Fox Theater in Atlanta has an old-fashioned neon sign.
Kay Theater in Rockdale, Texas
The Berlin Wintergarten theatre was the site of the Skladanowsky brothers's first film presentation from 1 to 31 November 1895
L'Idéal Cinéma at Aniche, France, opened 23 November 1905, closed 1977, demolished in 1995
A small still-active Kino Juha movie theatre in Nurmijärvi, Finland, opened in 1958
Regent Theatre in Hokitika, New Zealand
Cinema Odeon auditorium in Florence
Interior of Hoyts cinemas auditorium in Perth, Australia, with stadium seating with cup holders, acoustic wall hangings and wall-mounted speakers.
Interior of a 1950s-style fine arts movie theater auditorium. A low pitch viewing floor is used.
Tennispalatsi, one of the major Finnkino multiplex movie theatre places, in Helsinki, Finland
A typical raked (sloped) floor for a movie auditorium, which gives all viewers a clear view of the screen.
Example of a Multiplex layout
A drive-in with a 33-metre (108-foot) wide inflatable movie screen in the centre of Brussels
A giant inflatable movie screen used at a temporary outdoor movie theater (open air cinema)
1967 Bedford mobile cinema
A typical multiplex (AMC Promenade 16 in Woodland Hills, Los Angeles)
Non-movie-theater screening: movie in a culture club in Germany
35 mm movie projector
Broadcast center
Admission prices board, Cinema Museum (London)
Seating indicator
Box office of a 1950s style fine arts movie theater.
A theatre-goer enjoys a show
Some movie theaters in Finland sell alcohol to take along to the movie itself in select showings. Such showings are always adults-only, regardless of the rating of the movie.
These ratings are from the revised Taiwan motion picture rating system which took effect in October 2015.
Admission ticket for the premier of the movie A Viszkis
A bag of popcorn from the Plaza Theater in Atlanta, Georgia.
Hallway of MPX Grande, a defunct movie theater in Pasaraya Blok M, Jakarta.

The film is projected with a movie projector onto a large projection screen at the front of the auditorium while the dialogue, sounds, and music are played through a number of wall-mounted speakers.

Projected image from a video projector in a home cinema.

Video projector

About home and business projectors; for video projectors used in movie theaters, see digital cinema.

About home and business projectors; for video projectors used in movie theaters, see digital cinema.

Projected image from a video projector in a home cinema.
A Zenith Electronics 1200 CRT Projector based home theater, ca. 2006.

A video projector is an image projector that receives a video signal and projects the corresponding image on a projection screen using a lens system.

Video projectors are used for many applications such as conference room presentations, classroom training, home cinema, movie theaters and concerts, having mostly replaced overhead, slide and conventional film projectors.