Marine Grade Optical Lens

Optical clarity,
engineered.

Custom optics in silicone · acrylic · urethane · and other optical-grade clear polymers
≥98%Transmission
1.41–1.55Refractive Index
-60 to 220°COperating Range
IP68Sealing Grade
From the Shop Floor

Cast, cured, and cut to tolerance.

Every lens leaves the mould as a raw casting. CNC finishing brings it to spec. Model your own geometry and see it take shape before you request a quote.

Silicone & Urethane

Flexible optics,
engineered to bend.

Not every application allows for rigid glass or acrylic. OptiSil flexible optics are cast in high refractive index silicone and urethane elastomers — engineered to bend, compress, and conform without sacrificing optical clarity. Available in custom durometers, geometries, and index formulations to match your specification.

High Refractive
Index
Flexible,
Not Brittle
Silicone &
Urethane
Custom Molded
to Spec
Gloved hand holding a demoulded silicone microlens array panel, straight off the tool
From the Mixing Room

Poured, degassed, and cured.

Flexible silicone and urethane begin as a liquid resin, mixed and poured into precision molds, then cured to final hardness. The same care that goes into rigid optics carries through every flexible formulation we cast.

Silicone lens beads magnifying printed text, demonstrating optical clarity
Custom Engineering

No catalogue.
Every lens is custom-engineered.

There are no stock products. Every OptiSil lens is made from your specifications — geometry, refractive index, wavelength range, environmental rating. Submit your requirements and receive a full engineering proposal within 5 working days.

Request a Custom Quote →