What are beam angle and intensity?
Street light’s beam angle and intensity are two characteristics of light sources that affect how they illuminate a scene. Beam angle is the measure of how wide or narrow the light beam is, expressed in degrees. Intensity is the measure of how bright or dim the light source is, expressed in 60 W lumens or candelas. Beam angle and intensity are related, as a narrower beam angle usually produces a higher intensity, and vice versa.
Why do beam angle and intensity matter?
The beam angle and intensity of led street light sources are important for creating the desired quality and quantity of light in a lighting scenario. Quality is determined by how the light shapes, contrasts, and colors the objects and space, while quantity refers to how much light is available and how it is distributed. Adjusting the beam angle and intensity can be used to focus attention on a specific area or object, create depth and dimension, enhance textures and details, create mood and atmosphere, balance natural and artificial light, or save energy and reduce glare.
How to choose the appropriate beam angle?
When selecting the right beam angle for your led street lighting scenario, there are several factors to consider, such as the size, shape, and distance of the target area, the type and number of light sources, and the desired effect. Generally speaking, narrow beam angles (less than 30 degrees) are best for accent lighting, while medium beam angles (between 30 and 60 degrees) are ideal for task lighting. For ambient lighting, a wide beam angle (more than 60 degrees) is recommended to fill a room with general light or create a soft glow.
How to choose the appropriate intensity?
When choosing the appropriate intensity for a lighting scenario, several factors should be taken into consideration, such as the purpose, location, and time of the scenario, the color and reflectance of surfaces, and the personal preference of users. Generally speaking, outdoor lighting such as security, safety, or landscape lighting should be set to a high intensity (over 1000 lumens). Indoor lighting in living rooms, dining rooms, or bedrooms should have a medium intensity (between 300 and 1000 lumens), while accent lighting like candles, lamps, or fairy lights should have a low intensity (less than 300 lumens).
How to adjust the beam angle and intensity?
Adjusting the beam angle and intensity of your light sources can be done in different ways, depending on the type and design of the light sources. For example, lenses, reflectors, or diffusers can be used to modify the shape and direction of the light beam. Additionally, dimmers, switches, or sensors can be employed to control the brightness and duration of the light source. Furthermore, filters, gels, or color temperature settings can be used to change the hue and tone of the light source. By utilizing these methods, you can fine-tune your lighting design and obtain the ideal beam angle and intensity for your lighting scenario.