The information presented here applies to the LED MicroStars, the Tri-Clusters and 9 LED fixtures.
The Tri-Cluster has three LEDs which put out light in a 70 degree beam (pattern on right).
For a wider dispersement of light, clear silicone rubber sealer can be used to fill the LED cavity of the fixture. This will yield a light disbursement pattern as seen in photo below. The amount of diffusion is determined by the amount of silicon placed in the opening. Place thin layers at a time until desired diffusion is obtained.
If the target of illumination is beyond 8', the Tri-Cluster is recommended, as is.
For illumination of objects closer than 8', the silicone diffusion method may be more appropriate.
For the standard beam coverage, a good rule of thumb is that you will have a circle of light whose diameter is equal to the distance from the LEDs. I.E. 5 feet from the light fixture, you will get the coverage of a 5 foot diameter circle.
In the photo below, #350 and #370 are shown with silicone lenses.
An added feature to the silicone is that dirt and debris can't build up in the LED cavity. This may be an issue if the light is pointed upwards, or in a high humidity location.