How to Specify Sunglass Lenses for an OEM Order

A useful sunglass lens brief connects the look you want with the configuration a supplier can quote, sample, and document. “Polarized,” “dark grey,” or “premium lenses” leaves several decisions open. Two samples can look similar while differing in construction, transmission, surface treatment, or the evidence available for them.

Use the steps below to prepare one lens specification for each model and configuration. Keep alternatives separate so you can compare quotations and review samples against the same requirements.

1. Start with the finished sunglasses

Record the frame model or drawing revision, lens shape, intended use, and destination market. Include the proposed size and curve where known. Ask the supplier to identify any missing dimensions and confirm that the lens can be edged and fitted to the selected frame.

Describe specialist sporting or protective uses explicitly. A material name or a general sunglasses description does not establish suitability for those uses. Keep the frame specification alongside the lens brief; our custom sunglasses material guide covers the frame-material side of that decision.

2. Copy a lens specification record

Use one record per model, lens configuration, and revision. Mark unknown details as “to confirm.” Keep the supplier’s proposed alternative beside the requested version rather than silently replacing it.

3. Separate UV, tint, and polarization

Give each feature its own line in the brief. UV protection concerns ultraviolet radiation. Polarization addresses reflected glare. Tint and visible-light transmission describe another part of the lens specification. The National Eye Institute explains UV protection and polarized lenses, while the FDA notes that a darker tint does not establish stronger UV protection.

If a quotation says “UV400,” ask what document supports that wording for the selected configuration. Record a stated filter category or visible-light transmission separately. A color swatch, a polarized label, and a report for a different lens answer different questions. Check which evidence actually matches the sample being reviewed.

4. Compare the complete lens construction

PC, nylon/polyamide, and CR-39 are useful starting terms for a material discussion. Compare the proposed lens together with its thickness, curve, surface treatment, processing requirements, and finished frame fit. Ask which specification the supplier used when describing its optical or durability characteristics.

Clarify what “TAC” means in the offer. IPI describes cellulose triacetate film for optical constructions; Japan Eyewear lists finished TAC sheet lenses with separate configuration fields. The label alone does not identify a universal layer structure or every functional property.

For a material comparison, request the actual product data and coating conditions. ZEISS Sunlens’s material guide illustrates why the conditions behind a comparison matter. A supplier’s catalogue describes its own products; confirm the details of the configuration being quoted for your order.

5. Define photochromic comparison conditions

For a photochromic option, record the exact product, material, and color. Ask how its lighter and darker states were measured, including temperature, illumination, and the observation time. For a vehicle-related project, ask for information under the relevant windshield conditions.

Keep polarization as a separate question. The Transitions product availability guide distinguishes products and attaches conditions to indoor, outdoor, vehicle, and polarization descriptions. Use that approach when comparing proposed options. A brief outdoor demonstration does not describe every temperature, lighting condition, or vehicle setting.

6. Name each surface treatment

Replace “premium coating” with the treatments you want evaluated: for example, a hard coating, mirror finish, or anti-reflective treatment. Ask which surface receives each treatment and whether the proposed combination works with the selected lens construction.

ZEISS Sunlens separates appearance and functional coatings and describes treatment choices in relation to the lens. For your own brief, record an appearance reference, any relevant durability evidence, and the agreed sample checks. Keep any anti-fog or other additional treatment as an item to confirm rather than assuming it is included or permanent.

7. Match the evidence to the sample

Record who issued a report, its date, the sample or product identifier, and the method or conditions stated. Check how those identifiers connect to the material, color, coating, and configuration offered. Ask the supplier to explain any difference between the tested sample and the proposed production version.

A specification sheet, a test report, and a sample-review record serve different purposes. Keep their references together and leave unanswered questions visible. Use the eyewear sample approval checklist to record findings and the scope of a decision. Confirm production-release requirements separately for the project.

8. Check the quotation before confirming the brief

• Does each quoted lens match the model, configuration, and revision requested?
• Are color, UV, polarization, and any photochromic requirements recorded separately?
• Are coatings, samples, testing, and other charges included or listed separately?
• Are quantity assumptions, open technical questions, and timing conditions stated?
• Is each proposed alternative clearly identified?

Carry these details into your sunglasses quotation brief. For the wider frame, branding, and production discussion, continue to the sunglasses manufacturer page. A clear lens record gives the next conversation a shared reference, with the remaining decisions easy to identify.