The image perception is influenced by the distance between the viewer and the screen. As a rule of thumb the ideal viewing distance is 1.5 x the pixel pitch in meters. So in a 12 mm pixel pitch screen it is 18 meters. At this distance the human eye (or brain) no longer sees individual pixels but the whole picture. Of course you can get closer (and certainly further away) watching the screen. Closer to the screen the pixels will become increasingly evident, but the image will long remain acceptable. The viewing angle is generally understood, “how far a viewer to either side of a screen can move, and still see the same brightness”. It is often spoken about “readability” while the viewing angle really only has to do with the brightness.The viewing angles for an LED displays are measured horizontally and vertically, and indicate over what range images on the LED screen are fully visible without the screen displaying a negative image.The LED industry defines viewing angle as the full angle at which brightness is half of the brightness from dead center. More scientifically, if ø (angle theta) is the angle from off center (0°) where the LED’s brightness is half, then 2ø is defined as the full viewing angle.
The image perception is influenced by the distance between the viewer and the screen. As a rule of thumb the ideal viewing distance is 1.5 x the pixel pitch in meters. So in a 12 mm pixel pitch screen it is 18 meters. At this distance the human eye (or brain) no longer sees individual pixels but the whole picture. Of course you can get closer (and certainly further away) watching the screen. Closer to the screen the pixels will become increasingly evident, but the image will long remain acceptable. The viewing angle is generally understood, “how far a viewer to either side of a screen can move, and still see the same brightness”. It is often spoken about “readability” while the viewing angle really only has to do with the brightness.The viewing angles for an LED displays are measured horizontally and vertically, and indicate over what range images on the LED screen are fully visible without the screen displaying a negative image.The LED industry defines viewing angle as the full angle at which brightness is half of the brightness from dead center. More scientifically, if ø (angle theta) is the angle from off center (0°) where the LED’s brightness is half, then 2ø is defined as the full viewing angle.
typical problemwith XR solution
line
Problem withdisplay performance
Differents colors from different angles
image qualityon led display
cost & reliabilityfor led display
- 1. SOLUTION COST
- 2. SET UP CONVENIENCE
- 3. STABILITY & RELIABILITY
The viewing angle of a LED display represents the limit of its optimal picture quality. Sit at a position at a wider angle than that of its viewing angle and you will experience worse picture. If the viewing angle of the LED screen becomes lower, the LEDscreen brightness will be higher, or vice versa. If the contrast ratio between LED screens’ brightness and environmental brightness is higher, the led screens’ showing performance will be more colorful. But a too high brightness will consume a lot of energy and create high heat. For that the led chip’s brightness decreases much faster, and of course, its lifespan will become shorter. The visibility angle of a screen is by convention the angle within which the brightness of a display is equal to the 50% of the frontal luminosityFor example, a LED screen with 5000 NIT frontal luminosity (NIT = millicandels/sq) has a visibility angle equal to the angle by which the brightness is reduced to 2500 NIT. This visibility angle can vary depending on the LED and the technical features of the display. In conclusion, it can be stated that loss of brightness under viewing angle start with radiation characteristics of individual LEDs. In most cases radiation characteristics of LEDs show 50% brightness level at about 60°.
The viewing angle of a LED display represents the limit of its optimal picture quality. Sit at a position at a wider angle than that of its viewing angle and you will experience worse picture. If the viewing angle of the LED screen becomes lower, the LEDscreen brightness will be higher, or vice versa. If the contrast ratio between LED screens’ brightness and environmental brightness is higher, the led screens’ showing performance will be more colorful. But a too high brightness will consume a lot of energy and create high heat. For that the led chip’s brightness decreases much faster, and of course, its lifespan will become shorter. The visibility angle of a screen is by convention the angle within which the brightness of a display is equal to the 50% of the frontal luminosityFor example, a LED screen with 5000 NIT frontal luminosity (NIT = millicandels/sq) has a visibility angle equal to the angle by which the brightness is reduced to 2500 NIT. This visibility angle can vary depending on the LED and the technical features of the display. In conclusion, it can be stated that loss of brightness under viewing angle start with radiation characteristics of individual LEDs. In most cases radiation characteristics of LEDs show 50% brightness level at about 60°.
After COT treatment, the occurrence of yellowing, blistering and delamination caused by extreme temperature will be effectively reduced .
After COT treatment, the occurrence of thickness difference, unevenness and color difference will be effectively reduced.
- 1.NO SHOOTING LINES
- 2. NO BANDING OR NOISE
- 3. PRECISE COLOR DISPLAY CLOSE TO REAL
- 4.SAME COLORS EFFECT FROM ALL ANGLES
Adequate visual refresh rate on display --no shooting lines on camera
Display design led screen
- Low scan, best display effect
- Less than 8 scans recommended
Control system
- Adequate refresh rate in low grayscale ensured in collaboration with ic
- Genlock available to keep video source, display, cameras
synchronised
shooting lines
Reduce the number of scans while designing the display. It is recommended that the number of scans not exceed 16 scans for shooting applications.
Prioritize the reduction of current to reduce brightness, and preset multiple brightness adjustment modes that prioritize the use of current.
Driver IC mode adjustment.
Random scanning.
Rolling black lines
Frame tracking technology to reduce black field waiting time.
Genlock function of the controller to synchronize the LED display with the camera, and fine-tune the phase of Genlock
FRAME MULTIPLICATION to led screen
From the relationship between camera exposure time and LED display frame rate, we can determine the proper combination of shutter angle and frame rate for the most optimal shooting result.
We can support frame multiplication, allowing for expansion of frame rate.
No bangding,precise color
Adequate grayscale on display — colors more precisely controlledDisplay designCustomized color gamut covered by the RGB lamp beadsDisplays uncoupled designed(screen design and IC selection)White to black couplingBlack to white couplingCross-board coupling
Control system:Increase in display grayscale ensured in collaboration with ICCapability of calibrating the screen2.1 The brightness calibration of the screen from 0 to 255 conforms to the EOTF curve;2.2 Calibrate the color accuracy of the screen to ensure δe<4
1. Accurately capture the original color gamut ofthe display.
2. Automatic adjustment according to the colorgamut requirements of the input source.
1. 22bit+ achieves the highest 6bit grayscalepromotion and the smallest 0.002nits precisecontrol and compensation.
2.Precise Grayscale, use a colormeter to collectthe original grayscale performance of eachcolor, and make corrections andcompensations.
Effet comparaison (before left) and after (right)
Same effect fromdifferent angles
Requirements of xR for LED Display
Small enough RGB chip spacing required
Display design
1.Choose smaller size LED chips
2.The mesh cover of LED is speciallyControl system:Quick adjustment of RGB ratio in case of aproblem to ensure normal color display of some cameras
REAL CASE for xr
the solution for xR
Suitable for shooting and application
of small scenes
1G bandwidth solution at 8K resolutionSuitable for shooting and applications in
large-scale scenes such as studios
Higher requirements of xR for LED screens
8K HDR
HFR 120Hz/144Hz/240Hz
10bit/12
bitPrecise Color
Ultra low latency
1. Programming and Intuitive Operation Worldwide
The programming of classical LED Mesh and LED Mesh Curtain can be done using a smartphone, tablet PC or other remote device. The media facade can easily be live controlled from anywhere.
2. Easy installation and Retrofitting
LED Mesh outdoor facade has a simple assembly concept. Though our specially designed clip-technology systems, the LED-profiles and the universal connector system are very easy to install. And, if necessary, they can quickly and smoothly be replaced on location by our team or any Mesh trained person.
3. Brillant Quality
Both the full video-based media facade systems feature an infinite number of colors, a high brightness, resolution and refresh rate for an incredible and creative result on the facade. For both Classical LED Mesh and LED metallic Mesh curtains.
4. Night and Daytime Use
To ensure a 24-hour operation anywhere in the world our Classical LED Mesh and metallic LED Mesh curtain façade are available with a maximum brightness > 11000 nit (cd / m²). At dusk or at night the system can continuously be dimmed, automatically or manually.
5. Homogeneous Appearance
Even though LED Mesh curtains are composed of stainless steel on which are attached LED strips, that make it a massive structure, they have the advantage of having a homogeneous appearance. The LED strips are attached to the reverse side of the wire mesh maintaining the homogenous look of the façade at all times. The Metallic LED Mesh panel is regular. The inconspicuous cabling of each profile is not visible from the outside and with the high transparency of the mesh, the translucent look of the facade is maintained from both inside and outside.The shape and size of the media screen does not have to be the same size as the mesh facade. Since the LED strips are attached to the reverse side of the Mesh wire, they are hidden by it, therefore it becomes invisible. LED Mesh curtain wire are a design piece on their own. Therefore, even when the LED are off, the Mesh becomes an object of decoration and not a simple screen.
6. Individual Service
At every phase of your project our engineering team will give you comprehensive support. We will guide you safely every step of the way from concept to implementation. Street Co’ analyses the project and spot data, designs the module, creates video content, install the module and offers a two year guarantee on any product.
1. Easy Front Maintenance
Through an intuitive and easy-to-use maintenance system the LED Video Wall can be serviced from the front of the display. The LED modules can be removed quickly and efficiently for convenient maintenance.
2. Super fine HD pixel pitch
All available screen sizes have full high definition resolution and a standard 16:9 aspect ratio. This fine pixel pitch, combined with the advantage of no unsightly edges, makes these displays the best in high-end presentation video walls.
3. Adjustable Backlight
The Fine Pitch LED Presentation Video Wall is bright enough for all ambient lighting conditions, but the screen can be adjusted manually to suit user preferences. If your conference or meeting room is quite dark then you can reduce the backlight brightness to improve overall readability.
4. Optional floor stand
If you don’t have the desired wall space, an optional floor stand can be included to mount the LED video wall if the product allows it.
1. Easy install and maintenance
Flexible LED displays have a simple installation concept, which is to clip the modules together. Though our specially designed clip technology, LED profiles and universal connector system are very easy to install. And if necessary, they can be quickly and easily replaced on site by our staff or any other trained person.
2. Brillant Quality
Flexible LED displays offers an infinite number of colors, brightness ranging from 800 to 1000nits, excellent resolution and high refresh rate for an incredible and creative result on different application media.
3. Individual Service
At every phase of your project our engineering team will give you comprehensive support. We will guide you safely every step of the way from concept to implementation. Street co’ analyses the project and spot data, designs the module, creates video content, install the module and offers a two year guarantee on any product.
4. Customizable
Flexible LED screen is a product that allows you to express your imagination. Indeed, you can give your screen any shape and size you want : cylindrical, square, circular, curved, etc. These screens will help you beautify your structures and attract your customers.
1. Modular design
Based on the most proper pixel pitch, standard modules can be assembled into display in diverse sizes.
2. Easy installation and maintenance
Easily fix the module in the structure very fast; customized installation is also available.
3. Beautiful appearance design
Transparent LED modular design and simple structure make it more clear and transparent
4. Performances stables
D’innombrables et stricts tests avant que les produits ne quittent l’usine et jouissent d’une bonne réputation auprès des clients.
5. Planéité complète
La structure précise en aluminium assure la parfaite planéité du module.
6. Rentabilité
L’assemblage et l’installation faciles permettent d’économiser beaucoup de coûts de main-d’œuvre.
