Rockwell Laser Industries
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Laser Eyewear Frequently Asked Questions


What is the lead time for my order?

Most orders for Polymer products are shipped within 72 hours after receipt and LGT® glass filters within 5-7 working days. If an item is not in stock, you will receive an order acknowledgement with the expected ship date. The lead time for custom orders will be quoted on an individual basis.

What is the warranty on Honeywell laser eyewear?

Honeywell laser eyewear has a lifetime frame guarantee. If a frame breaks or malfunctions, it will be replaced at no charge. Honeywell warranties all products to be free from defects in materials and/or workmanship for one year from date of purchase.

How does laser eyewear work?

Sperian uses two types of lenses to properly attenuate laser exposures. Absorbtive technology literally absorbs the wavelength of the laser radiation while allowing the non-laser wavelengths to pass through the lenses. Sperian has two different absorptive technology platforms, dyes infused into polymeric filters or mineral glass (LGT®) and Dielectric (CLT®) technology, which reflects laser radiation.

Warning: Laser eyewear is only designed to provide protection against the wavelengths listed on the lens. Using the eyewear for any other wavelength can cause serious injury including blindness.

Where is the eyewear made?"

All Honeywell laser eyewear is manufactured in their ISO certified, state-of-the-art facility in Smithfield, Rhode Island.

What is optical density or O.D.?"

Optical density, or O.D. as is it is commonly known, refers to the attenuation factor of the filter to the base 10. Therefore, a filter with an OD of 2 attenuates the laser by a factor of 10 to the 2nd or 100, an OD of 3 attenuates the laser beam by a factor of 1,000, an OD of 4 by a factor of 10,000.

What about femtosecond eyewear?"

Some filters may exhibit saturated absorption when exposed to femtosecond laser pulses and may not afford adequate laser eyewear protection for those laser types. Please contact an RLI representative by email, or by calling (800) 94-LASER, to be sure the eyewear you choose is correct.


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