Laser projection VS TV has a disadvantage? Ultra-short fear will back pot

In the past two years, laser TVs and traditional LCD TVs have become a hit in the home display market. With the various advantages of laser light sources, the attention of laser TVs in the market continues to increase, and it can be said that it is a necessary equipment for future audio and video enthusiasts. At this time, I'm afraid that some people will ask, laser TV really has no shortcomings? In fact, laser projectors, which are an important part of laser televisions, have advantages in all aspects compared to traditional home projectors. However, ultra-short-focus technology among these advantages may also become an inadequacy. .
First of all, for the ultra-short-focus technology, the author in this simple science popularization. For projectors, there will be a projection ratio of this data, which is the ratio of the projection distance to the length of the bottom edge of the projected image, usually between 1.5 and 1.9. With the development of projection technology, the projection ratio has gradually decreased, and later short-focus and ultra-short-focus technologies have emerged. In general, the smaller the projector's throw ratio is, the better the effect of short focus is.
When the throw ratio reaches 0.6 or less, we usually call it an ultra-short-focus lens. In theory, non-short-focus normal projectors project a 100-inch screen that requires a distance of more than 3 meters from the projector to the projection surface (wall or curtain). In general short focal models, the projection distance is within 2 meters. For ultra-short-focus models, the shortest distance can now reach 0.5 meters to project a 100-inch large screen. Seeing this, I believe many of my friends will ask, this ultra-short focus technology is obviously a major advantage of laser projection, how do you say it will become a disadvantage? Don't worry, the author will give you an analysis next.
Laser TVs with ultra-short focus have undoubtedly saved a lot of space compared to those of conventional home projectors. The ultra-short focal projector can be placed very close to the curtain or wall, so for a friend with limited home space, worrying about the lack of home space is eliminated. But also can effectively prevent direct exposure of the human eye to light. (The bear children at home need to pay more attention)
Although the advantage of ultra-short focus is obvious, the disadvantages it brings cannot be ignored. The disadvantages of ultra-short focus are mainly reflected in the distortion and brightness of the screen, color unevenness and other aspects. Short focus and picture distortion can be described as a pair of friends. Most of the many ultra-short-focus models tested by the author need to be equipped with professional curtains. If you just look for a curtain, the picture can really be said to be difficult to access. Ah, the picture is very distorted. Of course, this professional curtain price is also quite expensive. If you have installed a laser projector at home for a day and you do not intend to move it during use, it is still difficult for a projecting white to restore the original image.
For brightness and color unevenness, the main impact is the picture quality of the projection screen. The lack of good quality naturally affects the user's visual experience. These two shortcomings are also an urgent problem for future laser TVs. Although these deficiencies still exist, they are still acceptable compared to many advantages of laser television. The author is still more optimistic about the development of laser television in the home display field in the future. These problems will also be resolved with the development of technology.

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