BP810 filters are designed for use in 800-830nm laser diode applications. They are insensitive to “blue shifting” experienced when using line or pattern generating lasers together with wide angle lenses. About 70% of cold therapy lasers used for the regeneration of damaged tissue that are out on the market operate at or near 810nm. Mounting this filter on a camera lens used in bright sunlight will better allow the laser beam to be imaged. However for a majority of 810nm applications, we normally recommend our BN810 filter option.