Still struggling with the Spring Festival? Know how to choose TV size in a minute

For the current families, there are houses ranging from 40 square meters to 400 square meters. The TV display is not limited to the living room. Based on the comprehensive entertainment sense of most Chinese families for TV, the living room will still be the first choice for most people. The width of the living room starts from 1.5 meters to at least 8 meters for luxury villas. Do we need to choose according to the distance between the TV set and the human eye.

Although small size TVs are becoming less and less, some small room users are still using them. In a 40 inch TV, the appropriate viewing distance is about 1.0 meters. After all, the resolution of small size TVs can reach at least 1080P, and they can be seen clearly at close range.

There is a common misconception about large TV sets: the larger the TV set, the more eyesore it is. In fact, blue light emissions, too close viewing distance, and blurred image quality are the real culprits of eye damage. Therefore, TV selection depends not only on the size, but also on the comprehensive performance of the TV.

Of course, no matter how large the size of the TV, there is a reasonable viewing distance. If the screen size is too large and the viewing distance is too short, it is likely that there is not enough visual space to cause picture deformity and to see all the pictures, which may also cause harm to the human eyes. Therefore, the choice of TV size must not be sloppy.

Remember the following formula

Maximum TV size (inches)=viewing distance (cm) ÷ 3.736
Minimum TV size (inches)=viewing distance (cm) ÷ 6.227

Why can it be accurate to three decimal places? We can know why we can draw such a conclusion in the following calculation process.

First, TV size refers to the length of the diagonal of the TV screen, in inches (1 inch=2.54 cm). And at present, most of them LCD TV The standard screen is 16:9 wider than it has become. According to Pythagorean theorem, the length of diagonal is √ 337 (root sign 337). The ratio of screen height to diagonal is 9 ÷√ 337.

Generally speaking, the actual viewing distance is about twice the screen width in the industry. At 3 times, I feel good on the spot. If I watch it less than this distance, I will be tired, while watching it at 5 times away has no impact.

Set the minimum size as A (inch), the maximum size as B (inch), and the viewing distance as L (cm). Now, we can establish such an equation.

2.54A×(9÷√337)×5＝L
2.54B×(9÷√337)×3＝L
We can get:
A=L÷6.226
B=L÷3.736

Therefore, taking the distance between the sofa in the living room of the mainstream family and the TV set as an example, it can be calculated that the size range of the TV set is 48-85 inches. The distance calculated by this formula is the best distance between the human eye and the screen, and within this range is the most comfortable viewing distance for the human eye. 75 inch is the size segment with the largest sales volume at present, because it can fit most mainstream living rooms, so before you buy a TV, you may want to think about where to place the TV, and then see how large the space of the house is suitable for.

This article is an original article. If it is reproduced, please indicate the source: Still struggling with the Spring Festival? Know how to choose TV size in a minute https://tv.zol.com.cn/853/8530487.html