LEDBacklight for Monitor

GRNLED is one of the leading LED light manufacturers which is specialized in producing, designing, supplying, exporting, marketing-led lights. We can do production or design according to customer’s requirements with much more experiences than expected.

Backlitkeyboard

We are a professional led light manufacturer, and supplier in China, Most of the led lights we can provide. We have more than 200 customers around the world

The advantages of back-lit panel lights are relatively simple technology and process. They benefit from semi-automated production lines, which result in lower labor costs. They can achieve sufficient brightness and high light efficiency, up to 135lm/w. They generally do not get yellow, and they are more cost-effective compared to edge-lit panel lights.However, their disadvantage lies in the relatively thicker lamp body, (8-12mm), which may be less sophisticated than edge-lit ultra-thin panel lights. Additionally, the packaging volume and shipping costs may increase. Due to their hollow structure, they have higher transportation requirements compared to edge-lit panel lights.

For common standard led lights, we have stock for raw materials, it is the fastest delivery time, generally available within 2-15 days for different quantities.

Light that directly strikes an object and then reflects in all directions is called “diffuse” light. The amount of light reflection is determined by the angle between the light ray and the surface normal vector. In Physics, Lambert’s cosine law provides an equation for calculating diffuse color.

The diagram to the right labels the pieces needed to calculate diffuse reflection. We need to calculate the angle between the vertex’s normal vector and a vector pointing at the light source from the vertex. This angle is labeled “theta” in the diagram.

600×600 LED panel lights are called 2×2 LED panel lights too. The actual size used in different countries is a little different.

LEDStriplights

It can be shown that the dot product of two vectors is equal to the cosine of the angle between the two vectors divided by the length of the two vectors. In code format, this means that:

LEDBacklight Strip

We have a good supply chain of raw materials at a competitive price. We can provide different solutions for different projects or orders. Cheap price but stable quality.

Our led lights are all middle-high end quality with famous LED chips, and LED drivers like Osram, Philips, and Meanwell. The lifetime is more than 10 years.

A: LED chips of LED-backlit panel light emit light through lens scattering and back cover reflection from the lighting surface of the luminaire. You can see the lighting principle from the picture:

A: Cheap price and uniform low-glare illumination are the top advantages for backlit panels compared with other lighting fixtures.

BacklightLED

Examine the plot of a cosine curve to the right. Notice that when the angle is zero, the cosine of zero is 1.0. As the angle increases, the cosine of the angle curves to zero. When the angle is 90 degrees, the cosine of 90 is 0.0. This is lambert’s cosine law. The cosine values are treated as percentages of color. When the angle is zero, cos(0) is 1.0, and you get 100% color. When the angle is 90 degrees, cos(90) is zero and you get 0% color. When the angle becomes greater than 90 or less than -90 the cosine goes negative. This is an indication that the front side of the triangle is pointing away from the light source. You can’t have a negative percentage of light, so we clamp the cosine of the angle to values between 0.0 and 1.0.

The backlit LED panel lights are without LGP, only including the metal bottom and PS cover, then it will be never yellow changing issues. The standard size includes 600x600mm, 1200x300mm, 300x300mm, 600x300mm, and 1200x600mm which are including EU standard, and USA standard, available to custom LED panel light in size for this backlit version. Widely used for office lighting, commercial lighting., etc.

To perform diffuse lighting calculations each vertex that defines a triangle must have an associated normal vector. The normal vector defines a direction that is projecting out from the front side of the triangle. The normal vector defines how light will reflect off of a surface defined at the vertex. The normal vector may be 90 degrees to the surface of the triangle, or it might be at some other angle to simulate a curved surface.

The example WebGL program above was based on a “point light source”. If you had a different type of light source, such as a sun light source, the shader programs would have to be changed because the definition of your light source would change, but the fundamental math would be the same.

As you experiment with the demonstration program, please make sure you observe the following characteristics of diffuse reflection.

The actual size of American LED panel light: 603x603cmActual size of LED panel lights in Germany: 620x620cmActual size of Korean LED panel: 640x640cmThe actual size of LED panels in other countries: is 595x595cm, because LED panels are used most in other countries, and the Chinese panel lights size is 595x595cm too, so it is also called 600×600 for convenience

Backlitlighting photography

The dot product of two vectors is defined as the sum of the products of their associated terms. 3D vectors are normally stored as arrays, where (v[0], v[1], v[2]) is the values of the vector. Therefore, the dot product of vectors v0 and v1 is:

If both v0 and v1 are normal vectors that have a length of 1, the dot product gives the cosine of the angle without any division.