What is the projection principle of IMAX?

IMAX is a film projection system, which can show larger and higher resolution films than traditional films.

The core part of the film projector is the intermittent motion mechanism, which changes the continuous rotation into intermittent rotation, and cooperates with the shading plate to make the film stay in the film window stably when the light passes through and image clearly on the screen.

When the light is blocked, pull it down quickly to avoid exposing the traces of film movement. The moving speed of a standard movie is 24 frames per second. In order to reduce the flicker effect, the shutter blocks the light twice per frame, increasing the flicker frequency to 48 times per second.

Mobile phone:

There are no loudspeakers, speakers, etc. Connect to a mobile projector. The functions of each part of the film projector are:

(1) transmission part. The kinetic energy provided by the motor is transmitted to the film conveying parts through gears, sprockets, toothed belts and turbine scroll bars. Three-phase synchronous motor is used in the fixed type; Generally speaking, a single-phase motor is used on the mobile type. Special models usually need interlocking motors to ensure synchronization between devices.

(2) Film conveying part. The rolled film is sent from the film supply tray to the film window to reflect the picture, and the optical vocal cord signal is converted into audio current through the echo part. Then roll up the projected film again.