ML-18-30 Manually Focus-Tunable Liquid Lens
ML-18-30 is a liquid-lens core component for controlling beam divergence in illumination systems. An annular pressing element (lens shaper/ring) applied to the membrane continuously changes curvature from flat to strongly convex. A rotary drive and the inclined displacement of a helical structure on the outer lens surface produce axial deformation. ML-18-30 suits LED illumination with variable spot sizes. Combined with secondary optics such as TIR lenses or reflectors, it maintains excellent spot quality and efficiency across a wide illumination-angle range. Low-dispersion material avoids chromatic effects on spot quality. Compared with axially moving fixed-focus lenses, the tunable condenser avoids annular intensity nonuniformity from spherical aberration and reduced efficiency at long distances. ML-18-30 especially suits professional illumination such as microscopy. Only the bare core is supplied; housing designs and drive-mechanism solutions for integration are available on request.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Outer Diameter | 30mm |
| Clear Aperture Dimension | 18mm |
| Thickness | 5.5mm |
| Weight | 3.5g |
| Focal Adjustment Range [525 nm] | ∞-+35 mm （525 nm） |
| Optical Power Range | 0-28dpt |
| Refractive Index [486.1 nm] | 1.387 |
| Refractive Index [589.3 nm] | 1.382 |
| Refractive Index [656.3 nm] | 1.380 |
| Abbe Number V | V=63 |
| Lens Type | Plano-Convex to Plano |
| Container Material | Polycarbonate (coatings available on request) |
| Transmittance | 91% |
| Polarization | Hold |
| Storage Temperature | -40-+85 °C |
| Operating Temperature | -20-+65 °C |
Key Features
Datasheet
Supplier Information
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