IMAX Rolling Loop Cine Projector, 1982

IMAX rolling loop cine projector, manufactured by IMAX Corporation, Ontario, Canada, 1982. Incorporates unique 'rolling loop' film transport mechanism for 70mm film.

This IMAX projector was used at the National Museum of Photography, Film and Television from 1983 to 1997. It used 70 mm film run through the projector horizontally. This technique produces an area that is about 8.3 times as large as the 35 mm format, and about 3.4 times as large as 70 mm film run through the projector vertically. It was often referred to as 1570, 70mm for the film size and 15 for the number of perforations per frame. Film moved through the projector at 1.7 metres per second.

The film was fed into the projector body and around a large ring or rotor; gaps at fixed intervals generated a loop of film that grew as it approached the aperture, it was held there briefly by a vacuum whilst the frame was illuminated. This motion occurred twenty-four times a second and was gentle enough to prevent damage, the perforations serving only to correctly position the frame rather than transport it. This system was called the rolling loop.

Details

Category:
Cinematography
Object Number:
1999-5149
Materials:
metal (unknown), plastic (unidentified) and electronic components
Measurements:
overall (lamphouse removed): 1500 mm x 1340 mm x 1520 mm, 900 kg
type:
projector and cine camera projector

Parts

IMAX Rolling Loop Cine Projector, 1982

IMAX Rolling Loop Cine Projector, 1982

IMAX rolling loop cine projector, manufactured by IMAX Corporation, Ontario, Canada, 1982. Incorporates unique 'rolling loop' film transport mechanism for 70mm film.

More

This IMAX projector was used at the National Museum of Photography, Film and Television from 1983 to 1997. It used 70 mm film run through the projector horizontally. This technique produces an area that is about 8.3 times as large as the 35 mm format, and about 3.4 times as large as 70 mm film run through the projector vertically. It was often referred to as 1570, 70mm for the film size and 15 for the number of perforations per frame. Film moved through the projector at 1.7 metres per second.

The film was fed into the projector body and around a large ring or rotor; gaps at fixed intervals generated a loop of film that grew as it approached the aperture, it was held there briefly by a vacuum whilst the frame was illuminated. This motion occurred twenty-four times a second and was gentle enough to prevent damage, the perforations serving only to correctly position the frame rather than transport it. This system was called the rolling loop.

Measurements:
overall: 1610 mm x 1610 mm x 1540 mm,
Materials:
electronic components , metal (unknown) and plastic (unidentified)
Object Number:
1999-5149/1
type:
projector and cine camera projector
IMAX Lens for Rolling Loop Projector

IMAX Lens for Rolling Loop Projector

Projection lens for IMAX rolling loop projector. f/2.4, 53.8mm lens, serial number 364--0041.

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This lens was used in this IMAX projector at the National Museum of Photography, Film and Television from 1983 to 1997. The projector used 70 mm film run horizontally. This technique produces an area that is about 8.3 times as large as the 35 mm format, and about 3.4 times as large as 70 mm film run through the projector vertically. It was often referred to as 1570, 70mm for the film size and 15 for the number of perforations per frame. Film moved through the projector at 1.7 metres per second.

The film was fed into the projector body and around a large ring or rotor; gaps at fixed intervals generated a loop of film that grew as it approached the aperture, it was held there briefly by a vacuum whilst the frame was illuminated. This motion occurred twenty-four times a second and was gentle enough to prevent damage, the perforations serving only to correctly position the frame rather than transport it. This system was called the rolling loop.

Materials:
metal (unknown) and glass
Object Number:
1999-5149/2
type:
lens
Mirror for IMAX Rolling Loop Cine Projector, 1982

Mirror for IMAX Rolling Loop Cine Projector, 1982

Mirror for IMAX rolling loop cine projector, manufactured by IMAX Corporation, Ontario, Canada, 1982.

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This mirror formed part of the IMAX projector used at the National Museum of Photography, Film and Television from 1983 to 1997. The projecor used 70 mm film run horizontally. This technique produces an area that is about 8.3 times as large as the 35 mm format, and about 3.4 times as large as 70 mm film run through the projector vertically. It was often referred to as 1570, 70mm for the film size and 15 for the number of perforations per frame. Film moved through the projector at 1.7 metres per second.

The film was fed into the projector body and around a large ring or rotor; gaps at fixed intervals generated a loop of film that grew as it approached the aperture, it was held there briefly by a vacuum whilst the frame was illuminated. This motion occurred twenty-four times a second and was gentle enough to prevent damage, the perforations serving only to correctly position the frame rather than transport it. This system was called the rolling loop.

Object Number:
1999-5149/3
type:
mirror
Crate for IMAX Lens for Rolling Loop Projector

Crate for IMAX Lens for Rolling Loop Projector

Crate for projection lens for IMAX rolling loop projector. Labelled 'IMAX CORPORATION' and 'Clydesdale Custom Case Co. Ltd'.

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This crate held a lens used in the IMAX projector used at the National Museum of Photography, Film and Television from 1983 to 1997. The projector used 70 mm film run through horizontally. This technique produces an area that is about 8.3 times as large as the 35 mm format, and about 3.4 times as large as 70 mm film run through the projector vertically. It was often referred to as 1570, 70mm for the film size and 15 for the number of perforations per frame. Film moved through the projector at 1.7 metres per second.

The film was fed into the projector body and around a large ring or rotor; gaps at fixed intervals generated a loop of film that grew as it approached the aperture, it was held there briefly by a vacuum whilst the frame was illuminated. This motion occurred twenty-four times a second and was gentle enough to prevent damage, the perforations serving only to correctly position the frame rather than transport it. This system was called the rolling loop.

Object Number:
1999-5149/4
type:
crate