Liquid Lens Cx Series Fixed Focal Length Lenses

The TECHSPEC Liquid Lens Cx Series Fixed Focal Length Lenses from Edmund Optics combine a high-resolution optical design with the fast electronic focus of a liquid lens. The lenses’ C-Mount design simplifies integration into machine vision and factory automation applications and their modular 3-piece housing design provides easy access to the integrated liquid lens. Liquid lenses are small cells containing optical-grade liquid that change shape when a voltage is applied. This causes the focal length and working distance of the liquid lens to shift. Conventional fixed focal length lenses must be mechanically adjusted to compensate for objects at different working distances. Integrating a liquid lens into a fixed focal length assembly, however, allows for electronic working distance adjustment without the need for physical, mechanical adjustment. As you can see, the liquid lens allows the system to refocus on boxes at different working distances. This process can be automated in software using autofocus algorithms, providing a quick electronic autofocus solution. Similar to a standard fixed focal length lens, the field of view of the lens increases as the working distance increases, allowing a larger area of the box label to be imaged. As a best practice when using a Liquid Lens Cx Series Fixed Focal Length Lens, the liquid lens should initially be set to zero optical power and the physical focus mechanism should be set to the furthest working distance that will be used. Then, the liquid lens’ optical power can be electronically adjusted for shorter working distances. This technique requires the least amount of optical power from the liquid lens and provides the best performance. The TECHSPEC® Liquid Lens Cx Series Fixed Focal Length Lenses from Edmund Optics are ideal for machine vision and factory automation applications requiring quick autofocus. To learn more about Liquid Lens Cx Series Lenses, go to www.edmundoptics.com/liquidlenscx