In recent years, large-screen TVs have gradually become a hot spot for everyone to buy. The first consideration is to buy large-size TVs. The next is TV brand, performance, function and price. In the past 10 years, our televisions have become larger and larger. So how big is the end?
When we really go to the store to buy, the salesman will often give us a comparison table of TV size and viewing distance, for example:
This comparison table is made by television merchants, and its principle is that when the size of a flat-panel television is too large or too small, it will affect the user's eye pressure. When the size of the television is too large, the user will have a strong sense of visual pressure during viewing. When the size of the television is too small, the user is bound to increase his attention in order to see the screen in the television.
But is the real situation so? When the mainstream TV size in the market is 40 inches, the 40 inches on the comparison table will correspond to a distance of 3.5 to 4.0 meters (this is generally the viewing distance of most living rooms), and when the mainstream TV size in the market is 50 inches, 50 The inch will correspond to a distance of 3.5 to 4.0 meters. This year's mainstream TV size is 55 inches. You can see that the 55-inch above the table corresponds to a distance of 3.5 meters. Therefore, this comparison table is mainly considered for the sale of goods by television vendors.
Take a look at the following figure:
From the perspective of the user seeing the screen, when we watch the laptop screen, the human eye is 0.5 meters away from the screen and maintains the same field of vision. When the distance is expanded to 3 meters, that is, 6 times, how much is the size of the laptop screen? ? The screen width of the 12-inch notebook is 25cm, which will be 150cm after expanding 6 times. This is the width of the 68-inch TV screen!
The 12-inch is the smallest notebook computer. The 14-inch `15-inch notebook is more common. It is 79-85 inches converted into an equivalent field of view. From the perspective of clear content, the 85-inch TV is the most perfect TV. Looking up in the room gives clear information.
So does this size of 65 meters 3 meters away produce visual pressure? After the author's actual test, the author's bedroom hung a 65-inch smart TV, just 3 meters away, watching six months without discomfort, but the brightness of the night TV should be properly dimmed. Why do we see a wall without oppressive feelings and large screens have oppressive feelings? The main reason is that the screen brightness is too high. From this point, laser televisions do have advantages over LCD TVs (laser TVs are more reflective, and LCD TVs are more glare).
Why use a computer screen to compare smart TVs? Because smart TVs are not only used for watching videos, they can also watch Internet content such as web pages in the future (current policy is limited, but openness is a matter of time, remembering that smartphones could not have a WiFi module at first, and now there is no such restriction).
Currently, there are many affordable products on the 65-inch TV market. Once it exceeds 70 inches, the price increases sharply. This is related to the existing production line of the LCD factory. It is recommended that you buy a 65-inch screen with good quality, and on the TV host CPU, Don't worry too much about memory. It's easy to change it in the future (for example, to pick up a new box). Even if the screen and host performance is better, the small screen will soon be eliminated when the big screen comes.
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