How is the size of the TV calculated? And what's the relationship between this size and viewing distance? How do they calculate between the two? A reasonable viewing distance has a great effect on protecting the eyes. What is the size and viewing distance of a 70-inch LCD TV? Do not worry, then follow Xiaobian together to understand it.
How to calculate the size of a 70-inch LCD TV?
TV screen size measurement units use inches, one inch equals 2.54 cm. Screen size criteria are determined by the length of the diagonal. We usually refer to a 42-inch TV as referring to the 42-inch diagonal of the TV screen, which is approximately 106.68 cm. This figure is a diagonal size, not the height of the TV set or the length of the TV set, etc. It is not the area of ​​the TV set. TV screens are all rectangular, but some televisions have different aspect ratios, some are 4:3, some are 16:10. But does not affect the diagonal size.
70 inch LCD TV size method:
So the easiest way is to measure the diagonal of the screen. Since this is the most intuitive and easiest way to measure a panel in a panel factory, it is used in the market. Actually, the unit in inches is not in line with our country's current laws. China is a metric country. Obviously, commodities cannot be measured in units of English. So, you can see that the displays of televisions or computers marked in shopping malls, or other dimensions, are It is in cm, or both, but it must not be only in English
After speaking about the calculation of dimensions, we talk about the relationship between TV size and viewing distance. TVs of different sizes have different viewing distances. A large viewing distance will damage the eyesight of the eyes, and the viewing distance is too long to experience a clear picture. Here I simply list out a table for your reference.
The distance between the viewing distance and the distance between the TV and the TV refers to the distance between the pixels of the LCD screen. It is proportional to the screen size and inversely proportional to the screen resolution. The screen with high resolution and low dot pitch has more details on the screen. good performance. If you look at the distance too close and the screen is too large, the screen will be obviously meshed, and the flicker will seriously affect the screen effect. Therefore, it is hoped that TVs that are watched in close quarters will not only use small-screen TVs, but also pay attention to the style with the smallest dot pitch. On this aspect, LCD TVs have obvious advantages.
The viewing distance and the brightness of the TV The brightness parameters of the LCD TV vary greatly, ranging from 300-1000nit. Higher two degrees will produce a harsh feeling, even burning eyes, too low brightness Eyes must be highly concentrated, very easy to fatigue, long-term use of low-brightness products more likely to suffer from myopia. The intensity of light in communication will decrease with distance. Generally, the energy of television is mainly spread in the range of up and down, 160 degrees, and so on. The theory requires that the light intensity transmitted to the human eye is between 85 and 110 nit. This is to ensure visual health. An ideal value. The viewing distance is usually about two-hundredths of the brightness of the TV screen.
How to calculate the size of a 70-inch LCD TV?
TV screen size measurement units use inches, one inch equals 2.54 cm. Screen size criteria are determined by the length of the diagonal. We usually refer to a 42-inch TV as referring to the 42-inch diagonal of the TV screen, which is approximately 106.68 cm. This figure is a diagonal size, not the height of the TV set or the length of the TV set, etc. It is not the area of ​​the TV set. TV screens are all rectangular, but some televisions have different aspect ratios, some are 4:3, some are 16:10. But does not affect the diagonal size.
70 inch LCD TV size method:
So the easiest way is to measure the diagonal of the screen. Since this is the most intuitive and easiest way to measure a panel in a panel factory, it is used in the market. Actually, the unit in inches is not in line with our country's current laws. China is a metric country. Obviously, commodities cannot be measured in units of English. So, you can see that the displays of televisions or computers marked in shopping malls, or other dimensions, are It is in cm, or both, but it must not be only in English
After speaking about the calculation of dimensions, we talk about the relationship between TV size and viewing distance. TVs of different sizes have different viewing distances. A large viewing distance will damage the eyesight of the eyes, and the viewing distance is too long to experience a clear picture. Here I simply list out a table for your reference.
The distance between the viewing distance and the distance between the TV and the TV refers to the distance between the pixels of the LCD screen. It is proportional to the screen size and inversely proportional to the screen resolution. The screen with high resolution and low dot pitch has more details on the screen. good performance. If you look at the distance too close and the screen is too large, the screen will be obviously meshed, and the flicker will seriously affect the screen effect. Therefore, it is hoped that TVs that are watched in close quarters will not only use small-screen TVs, but also pay attention to the style with the smallest dot pitch. On this aspect, LCD TVs have obvious advantages.
The viewing distance and the brightness of the TV The brightness parameters of the LCD TV vary greatly, ranging from 300-1000nit. Higher two degrees will produce a harsh feeling, even burning eyes, too low brightness Eyes must be highly concentrated, very easy to fatigue, long-term use of low-brightness products more likely to suffer from myopia. The intensity of light in communication will decrease with distance. Generally, the energy of television is mainly spread in the range of up and down, 160 degrees, and so on. The theory requires that the light intensity transmitted to the human eye is between 85 and 110 nit. This is to ensure visual health. An ideal value. The viewing distance is usually about two-hundredths of the brightness of the TV screen.
The mirror wire are used for car recorder and car backing radar.
What does our product include?
| 1 | JST wire harness |
| FH-----0.5mm ZH-----1.5mm | |
| SH-----1.0mm PH-----2.0mm | |
| GH-----1.25mm VH-----3.96mm | |
| EH/XH-----2.5/2.54mm | |
| 2 | Molex wire harness |
| PicoBlade-----1.25mm PicoClasp-----1.0mm | |
| PiciLock------1.0/1.5mm Minifit Jr-----4.2mm | |
| MicoBlade-----2.0mm MicoClasp-----2.0mm | |
| MicoLock-----1.25/2.0mm | |
| 3 | IDC flat ribbon cable |
| Contact material----Copper alloy | |
| Test voltage------500V AC | |
| Current rating-----1A | |
| Cable Technical Data: | |
| Contact Material----Tin plated copper | |
| Isolationswiderstand-->1000MΩ | |
| Insulation Resistance-->1000MΩ | |
| Temperature range----- -40℃.....105℃ | |
| UL Typ---------UL2651,28AWG |
Mirror Wire,Turn Signal Mirror Harness,Mirror Wire Harness,10 Pin Connector Wire Harness
Dongguan YAC Electric Co,. LTD. , https://www.yacentercns.com