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

Ultra-Precision Polygon Scanners

		UPP-190 DESCRIPTION CAD DRAWINGS

FEATURES AND ADVANTAGES Optimum runout characteristics Universal air-bearing Excellent rigidity Large mirror facet surface area (190mm × 12mm) Up to 50 facets 4-pole brushless DC motor Optimum alignment of optical and rotational axes Long operation life

	home optical modulators resonant choppers rotating choppers q switches pockels cells a-o modulators e-o modulators beam deflectors shutters and filters shutter/chopper filter selectors tunable filters laser safety shutters interlock shutters modulating systems locked to ext. clock master/slave mode a-o systems e-o systems scanners and deflectors resonant scanners polygon scanners beam deflectors acousto-optical peizo scanners scanning systems locked to ext. clock master/slave mode x,y raster mode a-o systems other products radiometers photo diode amplifiers o/e and e/o converters fiber optic multiplexers fiber optic video links laser vibrometers lock-in amplifiers contact us

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 50   Width across  [mm]   190   Mirror height  [mm]   12   Dividing error  [arc.sec]     less than +/-5     Rel. pyramidal error      [arc.sec]      less than +/-4      Mirror facet flatness  [at A=633nm]   A/10   Mirror facet roughness Ra  [nm]     (80 um cutoff) Ra<6   Reflectivity (A=500nm)  [%]     (depending on protective layer) >90   Reflection variation  [%]   <1   Bearing   Air bearing    Universal ball joint air-    bearing type EK-100   Feed pressure  [bar]   4 - 6   Air consumption  [I/min]   app. 10   Stiffness  [N/um]     app. 75     Drive Unit   Motor type    4-pole brushless    DC-motor   Ceiling speed  [min.-1]   8,500   Balancing  [mm/s]     (precision balancing) <0.03   Complete Unit   Rel. scanning variance  [arc.sec.]     less than +/-10