Flanged Plano-Convex Glass Illumination Lenses
A flanged plano-convex glass lens is a plano-convex lens with a stepped flange around its flat back - sized to drop directly into a reflector or housing bore, on existing tooling.

Key facts
| Form | Plano-convex with a stepped flange (constant-thickness rim) around the flat face |
|---|---|
| Surfaces | Convex front; flat flanged back - clear on most sizes, frosted confirmed on selected sizes |
| Size range | Existing tooling data spans ~15-108 mm outer diameter; 68 geometries currently supplier-reconfirmed and published in the catalog |
| Supply mode | Existing tooling - Made to order |


FAQ
What is a flanged lens?
A flanged (stepped) plano-convex lens has a flat rim of constant thickness around the convex optical surface, so it seats directly into a reflector or housing bore without a separate holder.
What sizes exist?
Existing tooling spans roughly 15 mm to 108 mm outer diameter. 68 confirmed geometries are published in the catalog, expanding in batches as more sizes are supplier-reconfirmed.
Is the focal length value exact?
No. The focal length shown for each catalog row is a reference value from the tooling data, not a guaranteed or measured specification. Confirm against your own optical requirement before committing to volume.
How is a flanged lens mounted?
The flange seats against a matching bore or reflector lip, typically held by the fixture housing or a retaining ring. Exact mounting hardware is application-specific.
Can a flanged lens be textured or frosted?
Yes on selected sizes - four geometries in the current catalog have a confirmed clear/frosted pair. Most sizes are clear only unless noted.
What if my size isn't in the catalog?
Tell us the OD, height and mounting need through the custom RFQ - we can check supplier tooling data or quote a new tool.
Tell us what you are sourcing.
A product name, a specification or an application is a starting point.