The choice of the angle of the lens of the LED wall washer

LED wall washer is also called linear LED flood light, etc. It is mainly used for architectural decoration lighting or to outline the outline of large buildings. Its technical parameters are roughly similar to LED floodlights, and they are mainly used for architectural decorative lighting. Today I want to introduce to you the light-emitting angle of the LED wall washer lens and the type of light-emitting surface.

The choice of the light-emitting angle of the LED wall washer lens

1. With a 90° lens, if the lamp is facing the wall, how many meters away from the wall, the diameter of the spot is how many meters. Then when the lamp illuminates the wall vertically, draw a straight line from the lamp to the wall, and this line bisects the illumination angle of the lamp. If the angle between the straight line and the oblique line of the maximum angle of illumination of the lamp is 45°, it forms an isosceles right triangle with the radius of the wall spot, and isosceles refers to the radius of the spot and the distance between the lamp and the wall.
Therefore, with a 90° lens, the radius of the spot is equal to the distance between the lamp and the wall. If a 120° lens is used, the radius of the spot is equal to 1.732 times the distance between the lamp and the wall.

2. For different forms of led wall washer, there will also be different angle options. In-line led wall washer is generally controlled by the cooperation of mold strips and brackets. Generally speaking, the deeper the bracket cup, the greater the angle. Small, mold strips are also divided into light-concentrating mold strips and large-angle mold strips. For example, the 5mm bullet head mold strip must have a smaller angle than the 5mm straw hat head. In addition, the higher the card position of the same mold bar, the smaller the angle.

3. Power-type led wall washer, this is generally determined by the bracket, lens or mold mold, the depth of the bracket cup determines the angle, and the lens and mold mold have various angles for you to choose. Such as 120°, 140° or 160°. SMD LED wall washer, the angle of the SMD LED is quite special, generally the angle is determined by the bracket, the angle of 3528.5050 is different, there are not many places for adjustment, what kind of angle it is The angle can be controlled when dispensing glue.

In short: different angles have different lighting heights. The smaller the angle, the greater the height. If the angle is too small, a beam of light will be formed, and there will be a dark area between the beams. According to the lighting height requirements.

Introduction of lens surface types

Glossy surface: The light transmittance is high, the disadvantage is that the light mixing is not ideal and it is prone to flare, especially the lens with bad material. Generally used for large-power lenses (above 30 degrees) or lamps that require high lighting.

Pearl surface: It has a refraction effect, so the light mixing is relatively good, but part of the light is refracted back and the light transmittance is reduced, and the lighting height will be affected a bit. It is generally used for lamps with high lighting uniformity requirements. It is recommended to use lamps above 24w/m.

Frosted surface: Frosted has an emulsifying effect, the light mixing effect is quite good, the single light transmittance is relatively lower, and the frosted lens is not commonly used.

Plane stripe: The shape is like a wave, that is, a striped double-angle lens

Trapezoidal stripe: Polarized lens, which looks like a ladder, and one layer is higher than one layer, and there are directions.