If you have a CO2 laser, then any acrylic, even clear, will work. Since, all Acrylic blocks lasers in the 10,600 nm wave length. However, Acrylic does almost nothing to block to red, blue, green, or any other lasers. Since your laser is wavelength maybe unknown, the safest option would be to use sheet metal, since that will block just about Ultraviolet (UV) resistance is the ability to resist UV rays or sunlight. Artificial plants are normally made from a variety of plastic, silks, fabric, wire and natural wood. These key materials are not automatically resistant to UV light and can fade, discolour and become extremely brittle. Regular plastic eyeglass lenses block most UV light, but adding a UV-blocking dye boosts UV protection to 100% for added safety. Other eyeglass lens materials, including polycarbonate and most high-index plastics, have 100% UV protection built-in, so an extra lens treatment is not required for these lenses. All the glass and acrylic finishes below are available in both a conservation grade and a non-conservation grade. Conservation UV Glazing: This highly recommended option offers Conservation Grade protection against 99% of indoor and outdoor UV light rays. This helps to protect your art from the damaging and fading effects of UV light. Plus, as an archival varnish, Lascaux will protect your paint against UV rays, thanks to its semi-matt, resoluble, and age-resistant finish Lascaux UV Varnish – Matte, 250 ml bottle Liquitex Acrylic Polymer Varnish PPS has proven to be a dependable and effective UV protection material in everything from automotive parts to electrical components. Acrylic. Acrylic is a type of plastic that’s great for outdoor use because it’s resistant to UV radiation from the sun. Acrylic has a high percentage of a chemical called MMA, which absorbs UV radiation. 250nm to 520nm Laser Shielding Material. This is a must for your new laser build! Protect the area around your machine and everyone’s eyes from stray laser radiation reflections. This material is optical grade semi-transparent acrylic material that has been tested with our 405nm and 445nm lasers to show an OD of 3+. This form of UV stabilizer, as the name suggests, absorbs the UV radiation to prevent the initiation of photo oxidation reactions. Once absorbed the heat from the UV rays is dissipated through the polymer chain. Black is an excellent UV absorber so paints, dyes, or elemental carbon black are often added to protect plastic products against UV light. Acrylic provides an excellent way to present products and objects while protecting them from outside forces. In the end, acrylic display boxes will likely be the superior material for display boxes. It can protect collectibles from UV light, and provides even greater optical clarity than glass. Best of all, it will not cause a safety hazard if This important physiologic pathway is a natural UV-protective response to protect the skin against further UV insult after an initial UV exposure. The ability of the skin to tan depends on the function and activity of the cutaneous melanocortin 1 receptor (MC1R) signaling pathway [51,52,53,54,55] (Figure 2). JDqyM.