Similar in construction to Lyot and Solc filters, Kurios filters consist primarily of liquid crystal cells that are sandwiched between polarizing elements. For a complete, Cerna-based Hyperspectral Imaging System, see the CM401, which includes a KURIOS-VB1 tunable filter and a CCD camera.
This technique produces true spectral imaging and can thus show spectral features that would otherwise be impossible to detect. Thorlabs' Kurios tunable filters and CCD cameras are also compatible with our modular Cerna ® microscopy platform that supports customizable microscopy solutions. For example, they can be used in conjunction with a monochrome scientific CCD camera to obtain images with a much higher accuracy for color representation than using a color CCD camera with a Bayer mosaic. With an included controller that provides Trigger In, Trigger Out, and Analog In functionality, these tunable optical bandpass filters are ideal for applications that perform multispectral or hyperspectral imaging, as demonstrated in the image to the right. See the plots in the tables below for details. The switching time varies depending upon the initial and final wavelengths and on the Kurios' bandwidth setting (for -VB1 only). Alternatively, the KURIOS-VB1(/M) has user-selectable bandwidth settings of Narrow, Medium, and Wide.
Kurios ® Liquid Crystal Tunable Bandpass Filters provide a continuously tunable center wavelength (CWL) in the 420 - 730 nm, 430 - 730 nm, or 650 - 1100 nm range. Most Kurios models have a fixed bandwidth for any given center wavelength.
Crystal filter design on line software#
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