IMAX projection system

In order to greatly improve the resolution of the image, IMAX film is shot with a special 65 mm negative and its special camera, and then developed into 70 mm film. The image size of traditional 70mm film is 48.5mm× 22. 1mm, while the image size of IMAX film is 69.6mm× 48.5mm, that is, the format of "15/70"-each frame of film. Therefore, the photosensitive area of IMAX film per frame is 10 times that of ordinary 35mm film and 3 times that of traditional 70mm film. This determines that the image projected on the "giant screen" is clearer and brighter than ordinary movies. The copy of this film is so heavy that it needs special lifting equipment or the strength of many people to move it when it is shown. Because the size of IMAX film is much larger than that of ordinary film, the film feeding speed of IMAX film is also three times that of ordinary film, and one frame is shown every 6 milliseconds. The film length shown once every1.7m, and every minute102.6m.. Therefore, the length of a two-hour IMAX movie is 12. 48632 . 6868686866 1

Because the traditional 70mm film is unstable after being magnified more than 500 times (that is, full screen), IMAX specially adopts the "rolling ring" technology for film projection, adds a compressed air device to speed up the film transmission, and places a cylindrical lens at the front end of the projector to keep a vacuum state during the projection. The IMAX projector is fixed with screws, and the projector is fixed in a completely horizontal state by four screws and gears. IMAX projection system also offsets slight jitter during projection by adding cam control arm, and its shutter length is about 20% longer than that of traditional equipment. The light bulb of the projector is amazing. The light emitted by the IMAX projector with the maximum power (15 kW) can be seen even on the moon. Therefore, IMAX projection system is expensive, and its weight exceeds 1.8 tons.

IMAX projectors have the highest precision and the strongest power, reaching an unprecedented advanced level. The key to its reliable and stable operation lies in the unique "rolling L00P" film feeding technology. This technique is to make the film run horizontally like a wave. In the process of screening, each frame is firmly attached to the back of the lens through a vacuum device, so that the stability of the picture greatly exceeds any conventional standard, and the image is crystal clear. IMAX projector 15kW light box is so powerful that naked eyes can see the light spot it emits on the moon.

An important factor of IMAX experience is its sound. IMAX six-channel super sound system includes subwoofer channel. Sonics sound source equalization speaker system specially designed for IMAX cinema means that the volume and sound quality of every place in the cinema are exactly the same, and the audience can enjoy the same quality sound effect no matter where they sit. There are thousands of holes on the screen in order to make the sound spread unimpeded. At the same time, the seat design with large slope gives every audience an unobstructed view.