Laser Protective Eyewear Available in the JR Macdonald Lab

The table below shows the types of laser protective eyewear filters available in the JRML. The column labeled “series” gives the identification code for the filter. The code will form the first characters of the identification number found on the glasses/goggles. For example, if a pair of safety glasses has the id. number “GGL2-29”, then the type of the filter is “GGL2”. From the table, you can see that this type of filter covers two bands, the UV/visible-blue region, and a broad NIR region.

Identification numbers for laser protective eyewear in the JRML are typically found a) on the temple, b) on the inside of the side shield, c) on top of the frame, as shown in the pictures above. A dual-lens goggle is shown with one fixed filter and one flip-up filter.

When there are multiple entries in the table with the same Series designation, it means that there are different filter types available with similar characteristics. For example, there are two different types of GGL2 filters in the lab, TRI and YAD. The filter type is indicated by the legend entry at the right of the graph in the table.

Filter graphs that include two different color bars indicate that the glasses have dual filters. The orange colored bars represent the filter characteristics of the fixed lens in the glasses, while the blue bars are for a secondary “flip up” lens.

The proper filter to wear in any laser area will be indicated on the warning sign on the area door. The warning sign will state the required optical densities and wavelength bands that are required. Optionally, the sign may include a box on the right-hand side that lists the individual filter types that may be used. This is shown in the example sign below.