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Talking about the Visual Distance Calculation of Small Pitch LED Display

Unlike the commonly used electronic products that are viewed at close range, such as mobile phone screens, laptop screens, etc., LED displays are suitable for long-distance viewing. For the same LED screen product, the viewing distance will determine whether the display effect that the viewer sees is clear or not.

The theoretical resolution of the human eye is 20 arc seconds, but due to the distribution of photoreceptor cells and their own defects, the actual resolution of visible light is 1 arc minute, and objects wider than 1 arc minute are blended with the background.

For example, let’s calculate the “point distance limit” that the human eye can see at 1 meter. You can simply understand it as the smallest point diameter or the smallest straight line diameter that your eyes can see at 1 meter ( smaller than the above size, then they will dissolve into the background), or it can also be understood as the minimum distance that can separate two small points (line diameters), if it is smaller than the above distance, then they will dissolve into a point or a straight line.

1 arc minute = 1/60 degree = (2π/360) / 60 = 0.000291 radians Therefore, the minimum point distance that can be seen at 1 meter (approximately equal to the arc length): arc length = arc * radius = 0.000291*1000mm = 0.291 mm Now let’s do the actual calculation. Let’s use a 16:9 high-definition (resolution 1920×1080) flat-panel TV screen to illustrate:

1 meter distance corresponds to 25.237 inches

2 meters distance corresponds to 50 inches

3 meters distance corresponds to 75 inches

4 meters distance corresponds to 100 inches

5 meters distance corresponds to 125 inches

The reverse deduction of the formula is the formula for calculating the best viewing distance in terms of the viewing distance of the LED display.

The best viewing distance is defined as: in the normal direction of the front of the screen, the minimum distance between the two closest adjacent pixel light-emitting points cannot be distinguished. It means that you can watch high-definition images in the visible area greater than the optimal viewing distance. At this time, you will not feel the graininess of the screen, because the resolution limit of your eyes has been reached.

The resolution of the human eye mentioned above is 1 arc minute, which is obtained by testing the black bars on a white paper under very ideal conditions (sunny and bright enough, and no reflection), and it is obtained by people with particularly good eyes. In fact, the average person’s eyes are not that good, and the results will be biased if this experiment is done under dim light, the human eye is highly sensitive to this pattern, which will be 3 to 5 times more sensitive to the white dots on a black background.

In addition, for a point light source in the dark (if the brightness of the point light source is the same, for example, double star observation in astronomy), the resolution of the best person can reach 2 arc minutes, and the resolution of the average person in this case is 3- 5 cents. If the viewer is nearsighted, the resolution of distant objects will be lower.

Therefore, we calculate the ideal situation (according to greater than 1 angular minute), people standing in the area between S1 and S2 can watch all the images without losing information, and the best viewing distance is at the golden section point Sr. Perfect balance between distance and vision.

1 minute of arc＝1/60 degree＝(2π/360)/60＝0.000291 radian; usually take the value of 0.000294 radian, 1/0.000294=3400, get the formu

:

Minimum sight distance S1=3400H; whe

:

Maximum viewing distance S2=3400P; P(mm)——LED pixel pit

;

Optimum viewing distance Sr = 1+0.618(S2 -S1); H(mm)——three-color LED particle spaci

;

From this it can be deduced th

t:

The theoretical resolution of the human eye is 20 arc seconds, but due to the distribution of photoreceptor cells and their own defects, the actual resolution of visible light is 1 arc minute, and objects wider than 1 arc minute are blended with the backgrou

System display funct

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video signal disp

y

All monitoring video signals (compatible with PAL /NTSC /SECAM) connected to the network distributed processor can be displayed on the large screen in real time at the same time. It can realize splicing display, arbitrary size display, arbitrary zoom, roaming, full screen and other display functions, and can realize functions such as group switching, patrol inspection, and pre-plan display of video signa

.

Computer and workstation DVI/RGB signal disp

y

The DVI/RGB signals of all computers and workstations connected to the network distributed processor can automatically adapt to the resolution, and all DVI/RGB signals can be displayed on the large screen at the same time, which can realize real-time and no-delay display. It can realize splicing display, arbitrary size display, arbitrary zoom, roaming and other display functio

.

Graphics display for ultra-high resolution applicati

s

The network distributed processor supports the real-time display of static ultra-high resolution images and real-time dynamic GIS, GPS, SCADA, SIG ultra-high resolution graphic signals in any size up to full screen in the full screen range, and the integration with computer RGB and video signals Overlay display. And regardless of the size of the image on the entire screen, the clarity will not be lo

Mixed display of multiple sign

s

The Soft LED Mesh Curtain large-screen display system can realize flexible signal processing and display functions through LED controllers and network distributed processors, and has the function of mixing and displaying computer RGB signals, video signals and network signals at the same time. All signals can be displayed at any position, zoomed, dragged, spliced, roamed, and overlaid in a window-opening manner, and can be fully dynamic and real-ti

.

Micro-pitch LED large-screen splicing display system is guided by theories of system engineering, information engineering, and automation control, and integrates the most outstanding international high-definition digital display technology, splicing technology, multi-screen image processing technology, and network technology. Make the whole system a large-screen display system with high brightness, high resolution, high definition, high intelligent control and advanced operation. It can be well connected and integrated with user monitoring system, command and dispatch system, network information system, etc. to form a set of interactive information display and management platform with complete functions and advanced technology.

CategoriesElectrical/Electronic by

LED displays not only offer vibrant visuals and dynamic content but also come with a range of environmental benefits that make them a sustainable choice for businesses and organizations. In this article, we’ll explore some of the key environmental benefits of LED displays.

Energy Efficiency:

LED displays are highly energy-efficient compared to traditional display technologies such as incandescent bulbs or fluorescent tubes. LED technology consumes significantly less power to produce the same level of brightness, resulting in lower energy consumption and reduced electricity bills. By using less energy, LED displays help to lower greenhouse gas emissions and reduce the carbon footprint associated with powering digital signage systems.

Longevity and Durability:

LED displays have a longer lifespan and greater durability compared to traditional display technologies. LED modules can last for tens of thousands of hours of operation, reducing the frequency of replacements and minimizing electronic waste. Additionally, LED displays are resistant to damage from shocks, vibrations, and temperature fluctuations, resulting in fewer repairs and replacements over time. By extending the lifespan of display systems, LED technology helps to reduce the environmental impact associated with manufacturing, transportation, and disposal of electronic devices.

Mercury-Free:

Unlike some traditional display technologies such as fluorescent tubes, LED displays do not contain hazardous materials such as mercury. Mercury is a toxic substance that can have harmful effects on human health and the environment if not handled properly. By eliminating mercury from the manufacturing process, LED displays help to reduce the risk of environmental contamination and protect the health and safety of workers and consumers.

Low Heat Emission:

LED displays produce minimal heat compared to traditional display technologies such as incandescent bulbs or fluorescent tubes. This low heat emission not only helps to reduce energy consumption but also minimizes the need for additional cooling systems or air conditioning in indoor environments. By reducing the demand for cooling, LED displays contribute to energy savings and lower carbon emissions associated with air conditioning and HVAC systems.

Recyclability:

LED displays are composed of recyclable materials such as glass, plastic, and metal, making them easier to recycle at the end of their lifespan. Many manufacturers offer recycling programs or take-back initiatives to responsibly dispose of old or obsolete LED displays and recover valuable materials for reuse. By promoting recycling and responsible disposal practices, led display design display manufacturers help to reduce the amount of electronic waste sent to landfills and conserve valuable natural resources.

Adaptability to Renewable Energy:

LED displays can be powered by renewable energy sources such as solar or wind power, further reducing their environmental impact and carbon footprint. By harnessing clean and sustainable energy sources, businesses and organizations can minimize their reliance on fossil fuels and reduce their contribution to climate change. Additionally, the low energy requirements of LED displays make them well-suited for integration with off-grid or remote power systems, enabling their deployment in environmentally sensitive areas or locations with limited access to the grid.

In conclusion, LED displays offer a range of environmental benefits, including energy efficiency, longevity, mercury-free operation, low heat emission, recyclability, and adaptability to renewable energy sources. By choosing LED displays for their digital signage and visual communication needs, businesses and organizations can minimize their environmental impact, reduce energy consumption, and contribute to a more sustainable future.

CategoriesElectrical/Electronic by

Significance of integrated design of glass curtain wall LED display and lighting lighting

With the development of economy and technology, people have higher and higher aesthetic requirements for environmental art design. They not only hope to enjoy the city scenery during the day, but also enjoy the scenery at night. Urban lighting has become an indispensable part of environmental art design. design elements.

Through good light conversion and building lighting display, the combination of glass curtain wall LED display and lighting lighting can enhance the inner emotion of the building, bring people a visual impact, and make the building more ornamental. The editor of this article will explain to you the significance of the integrated design of glass curtain wall LED display and lighting.

For urban buildings, the glass curtain wall is a form of expression of the building’s outer structure. Looking around, we can easily find the glass curtain wall. The glass curtain wall enriches the connotation of urban architecture and expands people’s horizons.

Glass curtain wall LED display and lighting are important components of urban building lighting. The glass curtain wall LED display is a kind of led wall screen display indoor (source website) (source website) display with high permeability installed on the glass curtain wall. It does not affect the lighting and viewing sight of the building during the day, but also has a transparent display effect and can be played on the glass. Commercial advertisement or city publicity information. Lighting is an indispensable part of building lighting. The dots of dots make the night view of the building’s facade more beautiful, reflecting the prosperity of the entire city.

The glass curtain wall LED display and lighting complement each other. By allocating resources and making full use of the relationship between light and shadow, the building has a stronger visual impact and integrates gorgeous brilliance into modern buildings. Basically, the infinite extension of commercial display life has been completed. Appropriate lighting design can eliminate many defects caused by poor construction in the original building while ensuring the integrity of the external space, thus meeting the key requirements of the LED curtain wall.