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uEye LE USB 3.1 Gen 1 AF Models with Liquid Lenses

By: IDS Imaging Development Systems, Inc.

Many image processing applications depend on varying working distances. As more and more production lines should no longer only operate profitably for mass production but also in small series, the adaptation to new products and therefore varying working distances must be easy and quick to manage. Cameras equipped with liquid lenses focus in milliseconds on various object distances – for millions of cycles, wear-free and without moving parts. With the modular autofocus (AF) board level cameras from IDS and the liquid lens lenses from Edmund Optics, camera applications with variable object distances can now be implemented more easily.

The Corning Varioptic liquid lenses are based on the principle of electro-wetting, where the surface tension of a liquid is manipulated by an electric field. The resulting possible deformation of a drop of water can be used functionally like an optical lens. Following this principle, the liquid lenses consist of a cell with two non-miscible liquids whose different refractive indices reflect the light at the surface boundary in the same way as a conventional glass lens does. When a voltage of up to 70 V is applied, the ratio of surface tension between the liquids changes, making the radius of the curvature of the spherical surface controllable.

With the uEye LE USB 3.1 Gen 1 AF models, IDS offers cost-efficient board level cameras with S-mount or CS-/C-mount as focusable variants. The liquid lens control is realized via an additional connector board, which is connected to the digital inputs and outputs of the camera board, which also enables the I2C communication with the liquid lens driver. Due to the complete implementation of Varioptic in the uEye software, the focus of the industrial camera can be easily adjusted via the user interface using the uEye programming interface. This modular camera concept allows both the software and the hardware to be easily expanded for various applications.

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