Archive

Once you have your laser hazard wavelength(s) and Optical Density (OD) requirements at each wavelength defined, you can refer to our Application Guides and Product Matrix reference material to help you narrow down your choice. In addition, if you have a part number from a...

Yes. Typically one requires compliance to one of the following standards; EN 122154 - Screens for Laser Working Places (usually for facility windows in rooms or doors), EN 60825 - Safety of Laser Products (usually for OEM equipment windows or viewing ports), or EN 207...

Yes. Our sheet products allow the user to comply with the requirements of ANSI Z136.1 and its relevant sub documents. We will provide a certification of compliance to our standard specifications (or your custom specifications) along with full lot traceability allowing you to label and...

Film for laser protection is no longer in mainstream use. It was made from soft vinyl materials combined with additives which are no longer regulatory compliant. The very thin film carried reasonable optical density but, had unacceptably low burn trough times. If one has a...

Cell cast acrylic and polished optical glass are the two best optical filter materials. Acrylic is a polymer which allow for easy fabrication, small to large sizes, great laser protection, formulation at any thickness from 1mm to 6+mm, and reasonable laser damage thresholds combined with...

Optically cast acrylic has excellent clarity and lower Abbe number (consistent refractive index throughout the visible region when it is manufactured as described above. Polycabonate sheet is a thermoplastic material and is extruded as described above.  It is very, soft and so PSI only provides...

At PSI we manufacture our acrylic sheet using cell casting. This means we start with a liquid monomer, add our dyestuffs and other additives, pour between molds assembled from optical quality glass sheet and oven cure over up to two days. The result is outstanding...

Huge question. The answer is NOT “I need X OD at Y wavelength because this is what it says on my glasses.” Every facility/company should have a designated Laser Safety Officer (LSO) who ideally calculates the nominal hazard zone (NHZ) for their Class 3b and 4...

When one wants to know what a product looks like we often think of color – it’s green or it’s blue, for example. Visible light transmission, defined differently by dozens of standards, is a measure of how much visible light is coming through, aka transmitting,...

Transmission with respect to laser protection is a measure of how much energy is passing through a sheet at a specific wavelength. Optical Density is simply a logarithmic scale of that transmission. OD = -logT(at a given wavelength) Examples: OD =0 T=100% OD=1  T=10% OD=2  T=1% OD=3  T=0.1% OD=4  T=0.01% OD=5  T=0.001% So, it...