Advantages and disadvantages of ultra-short focus projector

Advantages and disadvantages of ultra-short focus projectors;

Advantages: The projector has its own optimal projection distance, and the projection 100 inch large screen needs about three meters. The ultra-short focus projector can project a giant screen of 80-65,438+000 inches in the range of tens of centimeters or several centimeters, and you can enjoy the giant screen viewing experience in a narrow space.

Disadvantages: In terms of price, short-focus projectors are generally more expensive than telephoto projectors, because the more optical lenses a short-focus projector needs, the more complicated the technology is. If the technology is not mature, the projected image is easy to be deformed and irregular. Therefore, short-focus projectors have very high technical requirements and are expensive.

meaning

Ultra-short focus projectors are not limited by room size and placement distance, that is, ultra-short focus projectors can maximize the screen size in a narrow room. The projection mode seen in the cinema belongs to telephoto projector, and it takes a long distance to project the big screen.

Ultra-short focus laser projectors mostly use laser as light source, which has the advantages of high brightness and long service life. Compared with light bulb projection, the service life of laser projector before wear is much longer than that of light bulb, usually at least 20000 hours, while light bulb is 2000-5000 hours.