How the shape of a laser’s lens changes the beam and affects the power
Did your laser come with flat lenses, convex lenses, or both? Did you know that depending on the surface of the laser lens, and the distance the lens is from the tissue you are treating, there can be a huge difference in the amount of energy you are putting into the tissue?
Flat vs. Convex Lenses and the impact on power
Light energy flows through a convex lens in a converging manner, meaning it becomes more and more intense as it reaches its focal point. This focal point is where all of the energy that comes out through the lens is concentrated into a pinpoint size space if there is just one diode and into the most focused pattern if there are multiple diodes.
Different lenses treat tissues differently. A convex lens will provide the most energy in one place, making it great for precise applications, like when treating an acupuncture point. While a flat lens with a more diffuse and weaker beam is better when treating skin where the goal is to have minimal penetration.
Why do we need to know this information?
The more we know, the better effects we can have each and every time we use our lasers. and better effects mean better patient care, better outcomes, and better job satisfaction.