Ophthalmic Lens Polishing — Flawless Mineral Glass, at Production Pace
Most lenses today are plastic. Mineral glass is the exception — and the premium end: sun lenses for the most demanding eyewear brands, and specialty prescription lenses chosen for their scratch resistance and optical clarity.
CERITOP and LUCERIS are cerium oxide polishing powders for mineral glass lenses: low defectivity without giving up throughput.
What Mineral Lens Polishing Demands
Cosmetic Standards Are Absolute
On a premium sun lens, a fine scratch or a trace of haze means a rejected part. Defectivity is the first cost driver, before powder price.
Throughput Cannot Slip
Sun lenses are a volume business. A powder that polishes clean but slowly moves the problem from the quality department to the production plan.
Slurry That Holds Through the Shift
Settling, drifting concentration, loaded pads: when the suspension changes, the result changes. Consistent suspension behaviour keeps the first and the last lens of the batch alike.
CERITOP and LUCERIS for Ophthalmic Lenses
Two ranges, one objective: the best compromise between low defectivity and productivity.
CERITOP – Throughput and cost per lens lead the specification
LUCERIS – Defectivity targets are tightest: premium sun and specialty Rx
| Grade | Typical Application | D50 laser | Key strenghts |
|---|---|---|---|
| CERITOP 41 | Optical and ophthalmic lens surface finishing, standard polishing wheels, manual polishing stations, synthetic or felt structural polishing pads | 1.0 – 1.5 µm | A versatile grade for optical lens surface polishing |
| CERITOP 42 | Polishing wheels, glass moulds | available on request | Ultra-fine for cavity uniformity, No grain-boundary etching |
| CERITOP 51 | Microscopes, photographic lenses | available on request | One-stop-shop for optical lens surface polishing |
| LUCERIS 71 | High-precision optics, electronics | 0.7 µm | Ultra high purity cerium oxide for the most demanding and precise applications. Lower removal rate, built for precision and very low defectivity. |
Go deeper
On a glass lens, a scratch is a strength defect
What US impact-resistance rules say about polished surfaces, and how to evaluate a compound on cost per good lens. 19 public sources.
Also useful: Glass mould polishing
Run Your Own Evaluation
Request a sample and contact us to get our TDS and MSDS. Tell us your glass type, machines and current reject causes — we’ll help you design the trial and debrief the results.