Characteristics of light guide plate classificatio

2022-07-22
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The light guide plate technology is a new high-tech product newly developed in the 21st century. The light guide plate comes from the backlight technology of liquid crystal display. It uses the refraction principle of optics to convert the linear light into a plane light source, so as to achieve the bright and uniform effect of the whole area light source. It is a new trend in the development of advertising industry, decoration industry, picture frame industry, and label industry

in the current stage of lamp lighting, the most popular is the LED lighting series. There is an important accessory in the LED panel lamp called the light guide plate. In the development process of LED panel lamp, the light guide plate has increasingly become an indispensable accessory, and its status and role are also increasing. Now let's see what's special about the light guide plate

characteristics of light guide plate

1. It can be arbitrarily cut into the required size, and can also be spliced for use. The process is simple and easy to make

2. High light conversion rate (more than 30% higher than the traditional board), uniform light, long service life, indoor normal use for more than 8 years, safe and environmental protection, durable and reliable, applicable both inside and outside the house

3. High luminous efficiency and low power consumption under the same area luminous brightness

4. It can be made into special shapes, such as circles, ellipses, arcs, triangles, etc

5. Under the same brightness, thinner products can be used to save costs

6. You can use any light source, point line light source for area light source conversion, including ledccfl (cold cathode lamp), fluorescent lamp, etc

classification of light guide plates

1. Light guide plates are divided into cutting forming and injection forming according to the forming and manufacturing methods. Cutting and forming: finish the finished product by cutting the optical grade PMMA raw plate; Injection molding: optical PMMA particles are injected into the mold at high temperature and high pressure with an injection molding machine for cooling and molding

2. The light guide plate is divided into straight down type and side light input (lamp tube and LED) according to the light input mode. Straight down type: place the illuminant (lamp tube or LED) under the light guide plate. Side entry type: place the light emitting body (lamp tube or LED) on the side of the light guide plate

3. The light guide plate is divided into non printing type and printing type according to the dot manufacturing method. Non printing: the dot is directly formed on the reflecting surface when the light guide plate is formed. It is also divided into chemical engraving, precision mechanical engraving (V-CUT), light lithography (stamper), and internal diffusion. Printing: after the light guide plate completes the shape processing, the dot is printed on the reflecting surface by printing, which is divided into IR and UV

4. The light guide plate is divided into non printing type and printing type according to the dot manufacturing method. Non printing: the dot is directly formed on the reflecting surface when the light guide plate is formed. It is also divided into chemical engraving, precision mechanical engraving (V-CUT), light lithography (stamper), and internal diffusion. Printing: after the light guide plate completes the shape processing, the dot is printed on the reflecting surface by printing, which is divided into IR and UV

working principle of light guide plate

1. Astigmatism principle of light guide plate

light guide plate is to use the injection molding method to press propylene into a plate with smooth surface, and then use high reflectivity and non light absorbing materials on the acrylic plate, and use screen printing to print circular or square diffusion points on the bottom of the plate, so as to diffuse light. When the light reaches the diffusion point, the light will reflect in all directions, and then destroy the reflection conditions and be emitted from the front of the light guide plate. In order to make the light emitting uniformly, we must use all kinds of diffusion points with different density and size (density and size can ensure that the probability of light reflecting in all directions is roughly the same). The purpose of the reflector in the light guide plate is to reflect the light exposed on the bottom back to the light guide plate, so as to improve the utilization rate of light and increase the brightness. At present, although the manufacturing processes of various light guide plates are different, they all use the principle of light reflection and light scattering

2. Design principle of light guide plate

the design principle of light guide plate, which is widely used at present, comes from the notebook LCD we see everyday. It adopts the principle of spectral analysis combined with laser engraving or digital printing technology, and is made under constant temperature, humidity and dust-free environmental conditions. It has the distinctive characteristics of ultra-thin and super bright, uniform light guide, energy conservation and environmental protection, no dark area, simple and fast installation and maintenance. At present, the maximum width of the light guide plate can reach 1500mm, the maximum length can reach 3000mm, and the thinnest thickness is 2mm. The larger the size, in order to ensure brightness, the thickness should be increased accordingly, and the light guide effect is correspondingly poor, and the thickest light guide plate should not exceed 20mm

summary: the above is the characteristics and classification of light guide plates introduced by the editor. I hope it can effectively help you. Please pay attention to more information

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