In experimental scenarios such as spectral scanning imaging, large-sized sample detection, optical surface scanning, and optical material characterization, ordinary stacked three-dimensional displacement stages often have limited travel ranges, resulting in verticality deviations and large cumulative errors during assembly and debugging, making it difficult to balance a wide movement range with micrometer-level positioning accuracy. The Sevan Optoelectronics 7-SWHT three-axis electro-mechanical displacement stage, with grating scales for full closed-loop feedback on all three axes, features an X/Y dual-axis travel of 850mm, and a Z-axis lifting travel of 200mm. It integrates large-scale movement and precise positioning, providing an integrated motion solution for automated scanning and detection of large-area samples. Beijing Sevan Optoelectronics... 。
The most remarkable feature of 7‑SWHT is its large and hollow integrated frame structure. The X and Y axes adopt a gantry frame layout, with an effective movement range of 850mm for the X-axis and 850mm for the Y-axis, and a vertical travel of 200mm for the Z-axis. The spacious hollow area can accommodate optical components such as light sources, detectors, and lenses for through-hole arrangement, making it highly suitable for transmission-type scanning imaging systems. It avoids the pain point of traditional stacked tabletops blocking the light path. The equipment is factory-finished with complete machine calibration, strictly correcting the verticality of the X/Y axes, and the movement process is smooth and stable. It eliminates the debugging workload for users to manually assemble multiple single-axis displacement tables, allowing the equipment to be put into use immediately after unpacking. Beijing Saifang Light... 。
All three axes are equipped with grating scale closed-loop feedback. The grating resolution can reach 1μm, and the positioning accuracy can reach 5μm. It is driven by servo motors, eliminating the risk of skipping steps in open-loop stepping. Whether for long-distance rapid movement or small-step precision scanning, the actual position can be read in real time, error correction can be completed, ensuring the consistency of positioning after multiple reciprocating scans, and effectively improving the data reliability of imaging, spectral mapping scans. The rated load of the entire machine is 10kg, capable of safely supporting sample platforms, fixtures, and small optical components, meeting the load requirements of research-grade equipment. Beijing Saifan Light... 。
The servo drive system takes into account both speed and smooth operation, supporting various motion modes such as single-axis independent movement, three-axis linkage, point positioning, reciprocating scanning, and sequence programming. It is compatible with the Sefan 7SC series motion controller and can be connected to user-developed software for secondary development, making it easy to build an automated testing process. The cables are equipped with a cable guide for protection, and during long-term reciprocating motion, the cables are less prone to wear, making it suitable for long-term continuous scanning operations. The base is reserved with standard installation holes, allowing for direct fixation on the optical platform and quick integration into the existing optical machine system. Beijing Sefan Optics... 。
Wide compatibility for various scientific and industrial scenarios: The material laboratory is used for large-area spectral mapping scanning of films and plates; the optical imaging system conducts two-dimensional scanning imaging of samples; large-area battery sheet scanning tests in the photovoltaic industry; the machine vision inspection platform; integration of various prototype equipment to achieve automatic three-dimensional spatial addressing of samples.
Facing the challenge of detecting large-sized samples, 7-SWHT breaks through the limitations of small travel displacement stages, with a frame-type large travel, three-axis full closed-loop, and hollow light-transmitting structure, balancing the motion range and positioning accuracy, providing a high-performance and cost-effective three-dimensional motion core unit for domestic photoelectric testing systems.
Link Microblog
