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Electrically focus- and manually focus-tuneable lenses

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Edmund Optics (EO), a provider of optical components, has introduced two liquid-filled lenses from Optotune of Switzerland – the electrically focus-tuneable lens and the manually focus-tuneable lens.

Electrically focus-tuneable lenses provide a single-lens solution for focus and zoom objectives. When the user applies a voltage to each compact, plano-convex lens, the lens changes effective focal length.

Each lens is filled with a proprietary optical liquid, and the change in voltage alters the pressure profile of the liquid, resulting in a change in radius of curvature. This electrical manipulation of the radius allows for a focal range of +15 to +100mm and, along with an aperture of 10mm, provides an impressive variety of applications and can replace multiple elements in an optical system.

These robust lenses are available in high refractive index or low dispersion options for research and for OEM integration. Cover glasses are available with either a visible or NIR coating.

The manually focus-tuneable lenses use a rotating outer ring to manipulate their focus length and change the shape of the lens from convex to concave. Using proprietary liquid-filled lens technology, they offer a wide focal tuning range of -40mm to infinity to +40mm.

With a large aperture diameter of 20mm, manually focus-tuneable lenses are ideal for education and research applications and they are perfectly suited for lighting systems, where the option to adjust the focal length allows for expanded control of the light source. These durable lenses are available in high refractive or low dispersion options. Cover glasses are available with a visible coating.

The lenses provide continuous focusability over a specific focal range, permitting the user to custom-tune the lenses for optimum performance. With a wide variety of materials and coating options, electrically focus- and manually focus-tuneable lenses offer the focal adaptability and versatility that makes them perfect for numerous research and OEM applications.

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