INS-11051 | Lens Stress Tester

The Opti+ INS-11051 Lens Stress Tester is a compact polariscope designed for the visual inspection of internal stress and strain patterns in ophthalmic lenses. By displaying characteristic bright and dark patterns, the instrument helps optical professionals identify areas of tension, distortion, or possible structural weakness that may not be visible under ordinary lighting.

Suitable for transparent and colored lenses, including glass, polycarbonate, acrylic, sun lenses, and crystal lenses, the INS-11051 is a practical quality-control tool for optical laboratories, eyewear workshops, frame assembly areas, and lens-production environments.

Outstanding Features

Internal Lens Stress Inspection

The INS-11051 uses polarized light to reveal bright and dark stress patterns within the lens, helping the operator evaluate its internal condition.

Visual Quality-Control Method

The instrument provides a clear qualitative view of stress distribution, allowing lenses to be inspected during production, mounting, adjustment, or final quality control.

Detects Mounting Stress

The tester can help identify excessive stress created during lens installation, particularly around screws, drill holes, and mounting points in rimless or acrylic lens assemblies.

Helps Reveal Hidden Structural Problems

Stress patterns and small developing cracks that may be difficult to detect with the unaided eye can become more visible through the polarized observation system.

Compatible with Multiple Lens Types

The device can be used with glass, polycarbonate, acrylic, crystal, sunglass, transparent, and colored lenses.

Simple Observation Process

The lens is positioned on the testing area and inspected through the upper observation window, providing a fast and straightforward quality-control procedure.

Useful Throughout Production

The INS-11051 can be used during lens processing, frame assembly, final inspection, and eyewear repair to evaluate whether a lens is under unwanted mechanical stress.

Compact Workstation Design

Its small footprint and lightweight construction allow the tester to be conveniently positioned on optical counters, laboratory benches, and production workstations.

✅ The Opti+ INS-11051 Lens Stress Tester provides fast visual inspection of internal lens stress, helping optical professionals identify distortion, mounting pressure, and potential structural problems before eyewear is delivered.