Lens Specifications in the Catalog
The catalog has four lens fields besides polarized. Each one holds only what a source states, with a citation. This site doesn't test lenses.
The fields
| Field | What it holds | Example |
|---|---|---|
vlt_percent |
Visible light transmission, in % | 12 |
lens_category |
Filter category (0-4) | "3" |
lens_material |
Lens material name as the maker prints it | "Plutonite" |
uv_claim |
The maker's UV statement, quoted | "100% UV protection up to 400nm" |
Light transmission
VLT is the share of visible light that passes through the lens. A lower number means a darker lens. The catalog stores it only when the maker states it. The Oakley Holbrook (Low Bridge Fit) with Prizm Sapphire Polarized lists 12% (Oakley). The Latitude Collection with Prizm Grey lists 17% (Oakley). Because VLT depends on the lens, the same frame can have different values.
Lens category
The category is a filter class from 0 to 4. The catalog copies it as the maker states it. Several Oakley pages state category 3, for example the Frogskins with Prizm Black Polarized (Oakley). When a page is silent or two readings disagree, the field stays empty.
Lens material
Makers often use trademarked names, and the catalog keeps them as printed. Examples are Oakley's "Plutonite" on the Holbrook XL (Oakley) and Maui Jim's "MauiPure" (Maui Jim) and "SuperThin Glass" (Maui Jim). The catalog doesn't translate these names into generic materials.
UV statements
The uv_claim field quotes the maker's wording exactly, because the wording varies. Oakley pages in the catalog use both "100% UV protection up to 400nm" (Oakley) and "filtering 100% of all UVA, UVB up to 400nm" (Oakley). No UV claim was found on the Maui Jim variant pages in the catalog, so uv_claim is null for them. A null value means the claim wasn't found. It does not mean the lens lacks UV filtering.
Claims, not tests
Each value is a claim by the maker or a retailer, recorded with its source and status. This site hasn't measured any of them, and they aren't health or safety advice. For eye-protection questions, rely on the maker's own documentation or a qualified professional.