Linear slides are simple linear motion devices composed of a stationary base and a moving carriage. These are slides with a drive mechanism that provide controlled, precise positioning along a linear axis. Linear slides and linear stages use several types of bearings and guide mechanisms. Linear slides and linear stages with plain bearings and sleeve bushings are also available. Selecting linear slides and linear stages requires an analysis of axis configuration and travel specifications.
Linear variable spectral filter changes wavelength along the length of the filter. When the filters are used with a slit on the entrance side, broadening the slit leads to a wider transmission curve and a reduction of the maximum transmittance. It transforms the incident spectral distribution into a spatial distribution. It converts spectral information from incoming light into a spatial distribution recorded by the detector array.