The only orange filter you’ll ever need. Discover how much more detail is “exposed” with this unique filter. This filter has a unique curved design that has renders more ridge detail when taking photographs with the 532nm and 524 nmLaser and other alternate light sources in the UV-550nm range. This Long Pass Filter blocks outside laser/ALS light and passes longer wavelengths emitted from trace evidence samples to capture images with more detail using a suitable camera. Made of polycarbonate.