In multi-band spectral acquisition, optical imaging, and laser calibration experiments, frequently disassembling and reassembling filters, repeatedly aligning the optical path, easily introduce alignment errors and consume a lot of debugging time. The Sefan Optoelectronics 7MMF3254 manual filter wheel, with a 12-bit large-capacity design, is specifically tailored for 25/25.4mm optical components. It enables smooth manual switching of the optical path and maintains the center of the optical path unchanged, significantly simplifying the setup process of multi-band optical systems.
The 7MMF3254 can simultaneously load 12 Φ25mm/25.4mm filter elements, compatible with thicknesses of 1–4mm lenses, with a light aperture of up to 23mm. In addition to various bandpass, long-wave pass, and narrow-band filters, optical elements such as neutral density attenuators and polarizers can be directly clamped. One wheel disc can carry a complete band scheme, eliminating the need to prepare multiple frames for replacement. The core mechanical structure ensures that the optical path center remains constant during rotation switching, eliminating the need for recalibration of the optical path for each switching position, thereby avoiding data fluctuations caused by alignment deviations, and ensuring the repeatability of experimental data.
The entire machine weighs only 0.3kg, with a compact and sturdy structure. It is equipped with a detachable base and supports two installation methods: it can be directly fixed on the optical platform surface or the base can be removed and the supporting rod can be used to suspend it, suitable for compact optical paths, vertical optical paths, teaching prototypes, and various layouts such as single spectrometers, spectral systems, and imaging optical paths. The wheel disc rotation damping is moderate, the position is clearly defined, the switching feels smooth, and it is not prone to looseness even after long-term use.
It is compatible with a wide range of scientific research and industrial scenarios: university physics and optoelectronics laboratories, used for multi-band screening of fluorescence, Raman, and transmission-reflection spectroscopy; laser optical systems, used for laser wavelength selection and light intensity attenuation; machine vision, semiconductor optical detection, and thin film optical testing; optical teaching experiments, and the development of multi-spectral imaging prototypes. It can be used in conjunction with Sefan monochromators and sample rooms to quickly build a complete spectral testing system.
Based on Sefan Optoelectronics' over 20 years of precise optical machine processing experience, the 7MMF3254 has stable processing accuracy. It uses domestic precision optical machine components to replace imported similar manual filter wheels, ensuring stable component supply and efficient technical support response.
Multi-band experiments no longer require repeatedly disassembling lenses or repeatedly adjusting the optical path. The 7MMF3254 twelve-position filter wheel, with large-capacity loading, zero optical path offset, and flexible dual-mode installation, simplifies the band switching process, making optical experiment debugging more convenient and measurement data more stable.
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