|
|
|
Frame Test |
|
The frame, body, housing or headgear components are
tested by installing "test" lenses that are strong
enough to allow high mass and high velocity tests to be
conducted. These components must have the integrity to
comply with the tests regardless of the actual lens that
will be in the model. The high velocity and high mass
test methods are carried over from the 1989 Standard,
but in the high velocity test, no failures are allowed.
Spectacle frames intended to house prescription lenses
shall meet the same criteria. Lateral coverage
requirements have been increased to provide expanded
rearward protection which primarily affects spectacles. |
|
|
|
Frame Marking |
|
All spectacle frames and temples, goggle bodies or
housings, faceshield headgear and welding helmet
components shall carry a permanent and legible mark or
logo identifying the manufacturer. In addition, they are
to be marked "Z87". Spectacle frames intended to hold
prescription lenses are to be marked "Z87-2", and shall
meet the requirements of Z80.5- 1997. For those products
classified as having non-removable lenses, the product
need carry only one marking. For spectacles, the Z87
(basic impact level) or Z87+ (high impact level) mark
may be placed on the frame or temple. For goggles,
faceshields or welding helmets, the Z87 or Z87+ mark may
be applied to any component including the lens. |
|
|
|
Lens Test |
|
Personal eye protectors are classified, based on
performance, as either basic or high impact models. They
are to be tested as complete products as they will be
offered to the user, and there is no distinction made
based on whether the product has removable or
nonremovable lenses. Basic impact models shall be
capable of passing the 1 inch drop ball test and high
impact models shall comply with high mass and high
velocity impact criteria. The basic vs. high level
impact requirements now fully apply to prescription
spectacles. The penetration test continues to apply to
plano plastic lenses, for all protectors, whether they
are of the basic impact or high impact type. |
|
|
|
Lens Marking |
|
Removable lenses must be marked in a permanent and
legible manner. All lenses must bear a mark or logo
identifying the manufacturer. For spectacles with
removable lenses, basic impact lenses require no
additional mark related to Z87, but high impact lenses
require a "+" mark indicating the elevated impact
performance. For all other product categories,
non-removable lenses, windows or filters require the
manufacturer's mark or logo. The product need carry only
one marking. Basic impact lenses shall be marked with
"Z87" and high impact lenses shall be marked "Z87+".
special purpose lenses and photochromic lenses continue
to carry "S" and "V" markings respectively |
|
|
|
Optical Requirements |
|
Optical requirements for plano spectacles are specified
in the areas of refractive power, prismatic power and
definition. Haze for lens components shall not exceed
3%. Transmittance requirements are specified for clear,
tinted and shaded filter lenses and windows. |
|
|
|
|
|
Dr David Benkle and Staff Provide Quality Eye
Care and Personalized Service You Can Trust