1. Impact Tests

All Edge Eyewear glasses are tested by independent laboratories that are accredited to test for ANSI Z87.1+2010.

A. High Mass Impact Section 6.2.2

Spectacle frames and lenses shall be capable of resisting a 500 gm (17.6 oz.) spike that is dropped from a height of 127 cm (50 inches).

B. High Velocity Impact Section 6.2.3

Spectacle frames and lenses shall be capable of resisting impact from a 6.35 mm (.25 inch) diameter steel ball traveling at a velocity of 45.72 m/s (150 ft/s).

C. Penetration Test Section 6.2.4

Lenses shall be capable of resisting penetration by a weighted needle with a total weight of 44.2 gm (1.56 oz.) dropped from a height of 127 cm (50 inches).

D. Ballistic Tests

Edge eyewear ballistics test

MCEPS GL-PD 10-12 Formerly: MIL-PRF31013 3.5.1.1

Simulates a shotgun blast from 33 feet

150 ft/s (102 MPH): AN51 Z87.1+ 2010

660 ft/s (450 MPH): Ballistic MIL-PRF31013 3.5.1.1

What Constitutes a Failure in impact Tests?

Section 6.2.1 – When each type of test is conducted as indicated in Sections 6.2.2, 6.2.3 and 6.2.4 a complete device shall fail if any of the following occurs:

•           Piece fully detached from the inner surface

•           Fracture

•           Penetration of the rear surface

•           Lens not retained

•           For the high-velocity test, the unaided eye observes any piece adhering to the contact paste, or observes contact paste on the projectile or complete device.

2. Optical Tests

A. Luminous Transmission — Section 5.1.2         

Luminous Transmission

A test that measures the fraction (percentage) of light passing through a medium (polycarbonate lens).

Requirements:

Clear: Must have a minimum of 85% VLT (Section 5.1.2)

Tinted: Must have a minimum of 8% and a maximum of 85% VLT (Section 7.1.2 – Table 10)

B. Refractive Power Section 5.1.4 – Figure ES

All Edge Eyewear Glasses Are Compliant With Ansi Z8711+ 2010

A test that measures the ability of a lens to focus light rays. (Measured in diopters)

What constitutes failure?

Refraction of light ± .06 Diopters

C. Resolving Power Section 5.1.4 – Table 1

A test that measures the ability of a lens to form separate distinct images of two objects close together when visually inspected. (Focus)

What constitutes Failure? Distinguishing less than 20 Lines

D. Prismatic Power Section 5.1.4 – Table 2

A test that measures the angular deviation of a ray of light after passing through a lens. (Measured in diopters)

What constitutes Failure?

0.5 Diopters or more deviation

E. Astigmatism – Section 5.1.4 Table 1       

This test looks for a condition of the lens in which there is a difference in refractive power due to curvature. (Flat spots)

What constitutes Failure?

0.06 Diopters or more difference

Additional Tests

Required Markings – Section 5.4 Table A

Coverage – Section 5.2.5 Annex D – Rule of 10′s