5 Highly Effective Ways to Increase LED Uniformity
There are many factors that influence the success of your new illumination system. Power and efficiency of the light source, as well as the size of the display, are always top priorities for many customers. However, one area that is often overlooked, yet extremely impactful on end results, is light uniformity. Check out our top five secrets for achieving uniform LED illumination.
- LED selection. Not all LEDs are created equal. Some LEDs are designed to emit light within a small cone, resulting in a bright source of light, while others emit light over a much wider angle. In the latter case, the light spreads more evenly instead of creating a single bright point.
- Secondary lenses. A secondary lens can be designed or sourced and placed over the LED. With this option, the lens can change the distribution of light that is emitted by taking advantage of the gap between the surfaces. When done properly, this creates a more uniform result.
- Indirect lighting. Depending on your project requirements, indirect light may enable more uniformity. For instance, this may include reflecting or refracting the light instead of pointing the LED straight to the observer via reflective surfaces, or with a light pipe or light guide.
- Diffusers. By placing a diffuser between the LED and the observer, you can create a more uniform and homogenous light distribution. While this option may decrease light efficiency, it’s a worthwhile tradeoff for the increased uniformity.
- Light guides. A light guide takes light from an LED and spreads it out uniformly over whatever surface needs to be illuminated. With the right design and technology, a custom light guide can actually conserve the majority of LED efficiency while increasing the uniformity of the display.
As illumination experts, Global Lighting Technologies can help you identify the solution that makes sense for you. Contact us today.