In the ultraviolet, visible, near-infrared, and even mid-infrared spectroscopy testing systems, the stability, repeatability and consistency of the filter switching, as well as the optical path consistency, directly determine the credibility of the spectral data and the reproducibility of the experiments. Manual changing of filters, repeated exposure to light, and human-induced disturbances are among the main sources of errors in spectroscopy experiments. The Sefan Optoelectronics 7IFW6 series of electric filter wheel is specifically designed for precise spectroscopy systems, featuring a six-position standardized optical path switching structure to achieve an automated, highly stable, and zero-offset multi-band filtering switching solution, fully meeting the requirements of scientific research experiments and industrial optical detection integration.
The equipment is equipped with a six-position structure, including one vacant light-pass position, and can be equipped with a Φ18mm standard filter. The light-pass aperture is sufficient, and it is compatible with various optical filtering elements such as long-wave pass, short-wave pass, narrow band, and attenuator. The 7IFW6 standard version covers a wide spectral range of 185–1600nm, which can meet the needs of most ultraviolet-visible-near-infrared spectroscopy testing scenarios, and is suitable for fluorescence spectroscopy, Raman testing, photoelectric response calibration, material transmittance and reflectance detection, and other mainstream experiments.
The product supports both electric control and manual dual-mode switching, balancing the requirements for automated processes and on-site rapid debugging. The precise stepping drive structure combined with an accurate zero-reset positioning mechanism ensures that the optical path center remains constant and without offset during each gear change, eliminating the need for secondary optical path calibration, significantly reducing system debugging costs, and effectively improving the repeatability and stability of experimental data. It can seamlessly connect with Sefan monochromators, spectrometers, sample chambers, and other complete optical systems, and is suitable for various scenarios such as laboratory setup, equipment integration, and automated testing lines.
The structure is compact, installation is universal, operation is low-vibration and low-noise, and long-term continuous operation has no drift in accuracy. As a mature domestic optical switching unit, the 7IFW6 filter wheel achieves a perfect replacement of imported products with high cost-effectiveness, high adaptability, and high stability, becoming the standard core component of multi-band spectroscopy systems.