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X-Ray Shielding Information
X-Ray Shielding Information

Aura Lens Products, Inc. is first and foremost a manufacturer of eye protection products. We are the only supplier of X-ray shielding glass lenses that meets the ANSI Z80-1979 standards.

Our lenses meet or exceed the standards for optical clarity, visible light transmission, and power and prism correction. Our lenses have been hardened to meet the 5/8" drop ball test. We are able to fabricate the leaded glass in plano power (non-prescription), as well as single vision and multifocal prescriptions.

Leaded glass has long been used as an effective shield against radiation of many types. Our lenses are Schott SF-6 leaded glass, the industry standard radiation shielding glass.

X- Ray Energy Pb Equivalency @ 2.5 mm CT % Absorption of X-rays
65 Kva
.78 mm
100%
80 Kva
.80 mm
100%
110 Kva
.80 mm
100%
150 Kva
.78 mm
100%
180 Kva
.76 mm
98%
200 Kva
.74 mm
98%
250 Kva
.75 mm
95%
300 Kva
.77 mm
92%
Gamma Ray Energy Pb Equivalency @ 2.5 mm
Co60 1.25mV
1.10 mm
Cs137 0.662mV
1.02 mm

Notes on X-ray Protective Lenses:

Due to the high index of refraction of this glass (1.806), this material is subject to chromatic aberration that some wearers cannot tolerate. This material is very dense due to the amount of lead oxide (70%) that the glass contains.

Even though the lenses have been hardened, they will still scratch easily. Treat your X-ray protective eyewear as you would treat your personal glasses. To clean, use a clean, soft cloth or tissue and mild detergent. Do not use an acid-based or vinegar-based detergent. Acid-based cleaners will cause a chemical breakdown of the polished surface resulting in what appears to be a colored stain on the polished surfaces, essentially ruining the surface.

Date of last update:10/7/2008