ELECTRO-OPTICAL PRODUCTS CORPORATION
	88-65 76th Avenue • Glendale, NY 11385, USA • Tel: 718-997-8100 • Fax: 718-997-8102 • www.eopc.com

High-Speed Polygon Scanners

		HSP-50 DESCRIPTION CAD DRAWINGS

FEATURES AND ADVANTAGES High rotating speeds (up to 40,000 rmp) Long service life Easy operation Up to 25 facets Asycroneous motor (standard) High precision hybride ceramic ball bearings

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EOPC offers a wide range of standard and custom polygon scanners that are used in the laser industry for printing and marking, scanning, inspection and measurement, and image projection. The rotating polygon mirror deflects a beam along a line and in the process transforms the beam from a static source of light into a moving light source (for example, in laser illumination devices and laser printers). In the reverse case, a static sensor can be used to scan along a line (for example, an infrared camera). Many applications perform both optical detection and deflection at the same time (for example, surface testing devices, barcode readers, 3D scanners, etc.).

Our high quality polygon wheels can be manufactured from brass, nickel, and copper, however, the majority are manufactured from aluminum. Generally, aluminum polygons are used in barcode readers. Brass polygons are often employed in the printing and display industry. Nickel polygons, which reduce light scattering, are typically used in metrological applications. Copper polygons offer exceptional heat resistance (up to 40kW) and are frequently used for CO₂ laser applications. In addition, surface coatings are applied according to the customer's specifications. Fused silica (SiO₂) is usually coated to aluminum polygons, but quartz, gold, and other reflection-enchanced coatings are available. EOPC's polygon scanners can be designed for use in various optical spectrums, including the visible and infrared regions.

Polygon Mirror   Number of mirror facets   (selectable)     up to 25   Width across  [mm]   50   Mirror height  [mm]   14   Dividing error  [arc.sec]     less than +/-10     Rel. pyramidal error  [arc.sec]     less than +/-10      Mirror facet flatness  [at A=633nm]   A/4   Mirror facet roughness Ra  [nm]     (80 um cutoff) Ra<6   Reflectivity (A=500nm)  [%]     (depending on protective layer) >90   Reflection variation  [%]   <1   Bearing   Mechanical bearing   Drive Unit   Motor type   Asynchroneous    motor   Ceiling speed  [min.-1]   40,000   Balancing  [mm/s]     (precision balancing) <0.05   Complete Unit   Rel. scanning variance  [arc.sec.]     less than +/-20