Front projection composite cinematography

Claim 2

A unit for use in the system of composite photography known as front projection, comprising a self-contained structure supporting a projection system for projecting a separately photographed scene onto a screen as a background picture, a semimirror whereby the projected picture is reflected onto the screen, said mirror being positioned at an angle to the optical axis of projection onto the screen, and a camera setup for photographing a combined scene including said background picture directly through the semimirror along the optical axis of the reflected projection beam; said projection system comprising a light source, a condenser system, a holder for a slide or motion picture film fixedly mounted for movement with the condenser system, and a focusing lens, said light source and condenser system being mounted in separate housings, which housings are separately adjustable so as to enable their positions to be varied relative to each other and to the other parts of the projection system.

Claim 3

A unit as claimed in claim 1, wherein the film holder is movable transversely to the optical axis of the projection system in the vertical and/or horizontal directions.

Claim 4

A unit as claimed in claim 2, further comprising separate, reversible, variable speed electric motors to move the film holder in the horizontal and vertical directions.

Claim 5

A unit as claimed in claim 1, wherein the structure comprises a wheeled carriage.

Claim 6

A unit as claimed in claim 4, wherein the light source and condenser system with the film holder are adjustably mounted on a first structure on said carriage, and focusing lens and semimirror are adjustably mounted on a second structure on said carriage, and said camera is adjustably mounted on a third structure on said carriage.

Claim 7

A unit as claimed in claim 1, further comprising means mounting the semimirror for adjustment relative to said projection system.

Claim 8

A unit fOr use in the system of composite photography known as front projection, comprising a self-contained structure supporting a projection system for projecting a separately photographed scene onto a screen as a background picture, a semimirror whereby the projected picture is reflected onto the screen, said mirror being positioned at an angle to the optical axis of projection onto the screen, and a camera set up for photographing a combined scene including said background picture directly through the semimirror along the optical axis of the reflected projection beam; said projection system comprising a light source, a condenser system, a holder for a slide or motion picture film, and a focusing lens, said light source and condenser system being mounted in separate housings, which housings are separately adjustable so as to enable their positions to be varied relative to each other and to the other parts of the projection system, wherein the housings for the light source and the condenser system are additionally movable in unison relative to the remaining parts of the projection system.

Claim 9

A unit fOr use in the system of composite photography known as front projection, comprising a self-contained structure supporting a projection system for projecting a separately photographed scene onto a screen as a background picture, a semimirror whereby the projected picture is reflected onto the screen, said mirror being positioned at an angle to the optical axis of projection onto the screen, and a camera set up for photographing a combined scene including said background picture directly through the semimirror along the optical axis of the reflected projection beam; said projection system comprising a light source, a condenser system, a holder for a slide or motion picture film, and a focusing lens, said light source and condenser system being mounted in separate housings, which housings are separately adjustable so as to enable their positions to be varied relative to each other and to the other parts of the projection system, wherein the housings for the light source and the condenser system are additionally movable in unison relative to the remaining parts of the projection system.

Claim 10

A unit as claimed in claim 7, wherein the housings are mounted on a rotatable lead screw, said lead screw being mounted on a slide mounted on a second rotatable lead screw so as to provide for both coarse and fine adjustments for the positioning of said housings.

Claim 11

A unit as claimed in claim 8, wherein each unit is independently adjustable in position on the first lead screw.

Claim 12

A unit for use in the system of composite photography known as front projection, comprising a self-contained structure supporting a projection system for projecting a separately photographed scene onto a screen as a background picture, a semimirror whereby the projected picture is reflected onto the screen, said mirror being positioned at an angle to the optical axis of projection onto the screen, and a camera setup for photographing a combined scene including said background picture directly through the semimirror along the optical axis of the reflected projection beam; said projection system comprising a light source, a condenser system, a holder for a slide or motion picture film, and a focusing lens, said light source and condenser system being mounted in separate housings, which housings are separately adjustable so as to enable their positions to be varied relative to each other and to the other parts of the projection system, wherein the focusing lens is a wide angle lens and is mounted for lateral adjustment relative to the other parts of said projection system.

Claim 13

A unit for use in the system of composite photography known as front projection, comprising a self-contained structure supporting a projection system for projecting a separately photographed scene onto a screen as a background picture, a semimirror whereby the projected picture is reflected onto the screen, said mirror being positioned at an angle to the optical axis of projection onto the screen, and a camera setup for photographing a combined scene including said background picture directly through the semimirror along the optical axis of the reflected projection beam; said projection system comprising a light source, a condenser system, a holder for a slide or motion picture film, and a focusing lens, said light source and condenser system being mounted in separate housings, which housings are separately adjustable so as to enable their positions to be varied relative to each other and to the other parts of the projection system, wherein the focusing lens is a wide angle lens and is mounted for lateral adjustment relative to the other parts of said projection system.

Claim 14

A unit for use in the system of composite photography known as front projection, comprising a self-contained structure supporting a projection system for projecting a separately photographed scene onto a screen as a background picture, a semimirror whereby the projected picture is reflected onto the screen, said mirror being positioned at an angle to the optical axis of projection onto the screen, and a camera set up for photographing a combined scene including said background picture directly through the semimirror along the optical axis of the reflected projection beam; said projection system comprising a light source, a condenser system, a holder for a slide or motion picture film, and a focusing lens, said light source and condenser system being mounted in separate housings, which housings are separately adjustable so as to enable their positions to be varied relative to each other and to the other parts of the projection system, wherein the camera is mounted for lateral angular and tilting adjustments relative to said projection system.

Claim 15

A unit for use in the system of composite photography known as front projection, comprising a self-contained structure supporting a projection system for projecting a separately photographed scene onto a screen as a background picture, a semimirror whereby the projected picture is reflected onto the screen, said mirror being positioned at an angle to the optical axis of projection onto the screen, and a camera set up for photographing a combined scene including said background picture directly through the semimirror along the optical axis of the reflected projection beam; said projection system comprising a light source, a condenser system, a holder for a slide or motion picture film, and a focusing lens, said light source and condenser system being mounted in separate housings, which housings are separately adjustable so as to enable their positions to be varied relative to each other and to the other parts of the projection system, wherein the camera is mounted for lateral angular and tilting adjustments relative to said projection system.