In spectral detection, photonic calibration, and multi-band imaging experiments, multi-level spectral stray light interference, repeated disassembly and reassembly of filters, and secondary alignment of the optical path often consume a significant amount of experimental time and even directly affect the accuracy of the data. The Sefan Optoelectronics 7IFW6 series of electric filter wheel is specifically designed for spectral systems. As the core component for filtering the optical path and switching bands, it provides a stable and automatically controllable pure optical path solution for research laboratories and industrial optical testing.
7IFW6 Filter Wheel
The 7IFW6 series features a six-level precision structure design. The first level is an empty position, and the second to sixth levels are suitable for Φ18mm, 2mm thick filters with a light transmittance aperture of 17mm. It efficiently eliminates multi-level spectra and enhances the purity of monochromatic light. The product line is divided into three models, covering different spectral ranges: 7IFW6 covers 185–1600nm, 7IFW6A extends to 185–2800nm, and 7IFW6B can reach 185–5000nm, ranging from ultraviolet, visible light to mid-to-long infrared, meeting diverse spectral testing needs. The equipment is pre-installed with a long-wave pass filter and reserved empty positions. Users can add narrowband, bandpass, and other customized filters as needed, flexibly expanding experimental capabilities.
The product supports both electric automatic and handwheel manual dual modes. When used with Sefan monochromators and spectrometers, the software can achieve automatic filter wheel rotation, featuring an automatic zeroing and positioning function. The spectral scanning process requires no manual intervention, adapting to automated testing processes; without the electrical control scenario, users can directly rotate the handwheel to manually switch gears, making the debugging and prototype setup more convenient. The precise stepping transmission structure ensures stable repeated positioning over the long term, and multiple switches will not cause optical path deviation. It eliminates the need for re-adjusting the optical path after each filter change, significantly reducing ineffective experimental time and ensuring data repeatability, facilitating high-quality paper experiments and stable output in industrial testing.
It is widely compatible with various optical application scenarios: in university research directions, it can be used for IPCE/QE photovoltaic response testing, fluorescence and Raman spectrum acquisition, and photodetector calibration, suppressing stray light interference and restoring the true spectral signal; in industrial testing fields, it is suitable for photovoltaic cell efficiency testing, semiconductor wafer optical detection, optical material transmittance detection, and gas online monitoring; in multi-spectral imaging systems, it can quickly switch different band filters to accurately extract target signals.
As a domestic precision optical equipment, Sefan Optoelectronics has been deeply engaged in the research and development of optical instruments for over twenty years. The 7IFW6 series achieves reliable domestic substitution, with performance benchmarking against international similar products. The hardware and supporting software are all independently developed, and the after-sales response and customized debugging are more efficient. The equipment has a compact structure, is compatible with optical platform integration installation, and can seamlessly connect to existing spectral systems, with low renovation thresholds.
Complex optical path adjustments should not be an obstacle to research and quality inspection. The Sefan 7IFW6 series filter wheel, with its six-level flexible configuration, wide spectral coverage, dual-mode controllability, and high-stability filtering capabilities, upholds the bottom line of spectral purity. Choosing 7IFW6 ensures stable and controllable band switching and true and reliable spectral data for cutting-edge scientific exploration and industrial quality inspection, laying a solid foundation for the optical path.
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