Consumers who often use LED display screens will find that LED display screens used in hotel conference rooms will burn their eyes when watching for a long time. In the TV program recording scene, the content of the LED display is switched too fast, and the brightness changes too fast, which will also make the audience feel uncomfortable off-site. And some low-quality indoor LED displays can even cause dry eyes, tearing, and blurred vision. This is that while the indoor LED display brings us clear image quality and brilliant color display, it also brings glare that can cause damage to the eyes.
Outdoor led display case
Outdoor led display case
LED display glare index CGI and standard classification
For the evaluation of uncomfortable glare, countries all over the world have their own methods. The glare index method CGI (CIE Glare Index) recommended by CIE (International Commission of Illumination) is currently a better mathematical expression method, which can evaluate glare more comprehensively and objectively. Its expression is:
In the formula: CGI--CIE glare index.
Ed--the direct vertical illuminance (lx) at the eyes, from a glare source.
Ei-the indirect vertical illuminance (lx) at the eye, from the background.
L--The brightness of the glare light source (cd/㎡).
ω--the size of the glare source (Sr).
P--Guth position index (position factor).
The glare index is an index to predict and evaluate the uncomfortable glare status of the indoor working environment. According to the mechanism of glare formation, the glare of the LED display can be divided into two types: direct glare, which is caused by the high brightness of the LED display and the strong directionality of the LED light source; reflected glare, which is caused by some LED displays The surface of the screen material has a high reflection coefficient, which is caused by the strong reflection of other light sources.
Indoor led display case
Indoor led display case
Vision screen killer one: direct glare
Indoor LED displays are generally used in hotel conference rooms, stadiums, live TV, concerts and other occasions. When the eyes are viewed for a long time in a short distance, the eyes will be stimulated by the direct glare of the LED display, and the pupils of the eyes will shrink. , The eyes will feel obviously uncomfortable, and long-term viewing will cause damage to the eyes.
The direct way to prevent direct glare is to reduce the brightness of the LED display. However, while reducing the brightness of the LED display, it also loses the core advantage of the indoor LED display-grayscale. The game between the two is exactly the game. One of the key thresholds for indoor small-pitch LED display "low brightness and high gray". Shenzhen Lanke Electronics Co., Ltd. has broken through this technical threshold with its deep understanding of indoor LED display applications and the technological advantages accumulated over 16 years of LED packaging.
Through breakthroughs in LED packaging materials and process design, Lanke engineers have developed an LED display packaging product that can greatly reduce glare-Heijing 2121. Different from the traditional indoor point light source LED, Black Crystal 2121 adopts surface light emitting technology. Compared with similar model point light sources, the surface light source has the characteristics of low glare due to its large and uniform light emitting surface, which makes the surface of the light source more irritating to human eyes. Reduce, greatly reduce the glare problem existing in traditional LED point light source products.
At the same time, the surface light source also completely eliminates the granular shape unique to the LED display (this granular shape will form light pollution and cause damage to the viewer's retina), increase the smoothness of the image, and make the image soft, friendly, and friendly, and at the same time Improved the clarity of the LED display image.
Vision screen killer two: reflected glare
In addition to the self-illumination of the glare of the LED display, part of it is caused by the reflection of the strong light in the surrounding environment on the surface of the LED display material. Especially for the LED stage background screen, the reflected glare is particularly serious. For the prevention of this kind of glare, the choice of reflective material is mainly considered. Black Crystal 2121 chooses a black PPA frame with lower reflectivity, and also adopts surface fogging treatment technology, so that the colloidal surface is reduced during the lighting process of the display. Reflectivity, compared with white lamp beads and ordinary black lamp beads, black crystal can reduce the reflected light by 70 percent , and reduce the reflected glare caused by the reflected light of the environment.
While paying attention to the quality of LED products, Lanke Electronics understands the safety and health of LED products. Indoor LED displays using surface-emitting devices are currently eye-protecting products in the LED display industry. Lanke Electronics uses surface light-emitting technology and surface atomization technology to make the light emitted by the LED lamp bead soft, natural and not harmful to the eyes, while reducing the reflection of the LED display screen and greatly improving the glare of the indoor LED display. This phenomenon has achieved the effect of effectively protecting the eyes from harm and completely eliminating point light sources.
In the era of indoor small-pitch display and smart life, LED displays must not only be colorful and have a long service life, but also take into account the safety and comfort of the viewer, and a healthy screen can be closer to consumers.
