Micro Lenses Types and Characteristics

We achieve concentricity to 0.002mm and surface finishes down to 1.5nm RMS using single-point diamond turning. Micro-lens performance depends on surface curvature accuracy, center thickness consistency, refractive index stability, alignment precision, and replication fidelity across arrays. Even micron-level deviations can shift focal distance, reduce coupling efficiency, introduce asymmetry, and degrade sensor performance. Precision must hold across production volume.

We produce spherical, aspheric, diffractive, Fresnel, and freeform surfaces for diverse optical applications. Glass micro-lenses offer minimal thermal expansion, long-term dimensional stability, and resistance to creep. Polymer micro-lenses enable high-volume production, lightweight integration, complex array geometry, and integrated mounting features. However, polymer introduces higher thermal expansion, shrink variation, residual molding stress, creep over time, and tool wear sensitivity. Curvature accuracy must account for material behavior.

Our lenses serve medical devices, VR/AR displays, automotive systems, lighting, and defense applications. Injection molding requires shrink modeling, controlled packing pressure, and balanced cooling. If shrink behavior is not accurately compensated, radius of curvature shifts, focal length drifts, and array alignment changes. Micro-lens systems often rely on tight focal tolerances. Production must reflect real molding behavior — not theoretical geometry.

Yes, we provide complete optical and mechanical design services from concept through manufacturing. Molding can introduce molecular orientation, stress gradients, and birefringence. In micro-lenses, this may cause refractive index variation, distortion under load, and polarization sensitivity. Stress control is part of optical design.

We are ISO 13485-2016 certified for medical device quality management and maintain ISO processes. Micro-lenses are often used in arrays. Array performance requires consistent feature replication, uniform curvature, and minimal lot-to-lot variation. Tool wear can cause gradual curvature drift, edge softening, and array non-uniformity. Tool maintenance strategy directly affects optical stability.

Lead times vary by complexity and volume; contact us for specific project timelines and delivery schedules. Micro-lenses may operate under temperature cycling, elevated local heat, vibration, and UV exposure. Polymer curvature may shift slightly with temperature, relax under sustained stress, and change geometry over long durations. Even small changes can affect coupling or focus. Validation must include lifecycle conditions.

Polymer may not be appropriate when extreme dimensional stability is required, operating temperatures are high, creep cannot be tolerated, or focal tolerance leaves minimal margin. Glass or hybrid systems may provide greater long-term stability in certain applications. Material selection must reflect system constraints.

Micro-lens programs often pass early validation. Challenges may appear during ramp due to resin lot variation, parameter drift, tooling wear, and cycle time adjustments. If the optical design is overly sensitive to small curvature shifts, yield decreases. Robust micro-lens production requires realistic process margins.

Rather than asking 'Can you mold micro lenses?', experienced teams ask: How stable is curvature over tool life? How is focal length verified at production scale? How sensitive is performance to shrink variation? What is the creep behavior under operating conditions? How wide is the molding process window? These questions determine scalability.