OPTICAL PROPERTY COMPARISON The superior optical properties of cast ADC makes it the logical choice over other optical plastics for all types of scanner exit windows, imager windows and lenses. The following table compares the important optical properties of ADC, polycarbonate and polymethylmethacrylate: DOWNLOAD OPTICAL PROPERTY COMPARISON FABRICATION COMPARISON Scanner exit windows, imager windows and lenses are easily fabricated from ADC optical cast sheet without expensive or complex tooling. Windows and lenses are free of residual stress and polarization which is a common problem often found in molded parts due to molding process variations. ADC is scratch resistant and chemical resistant and does not require hardcoating. These fabrication advantages makes ADC the ideal choice for original equipment manufacturers. The following table summarizes the main fabrication advantages: DOWNLOAD FABRICATION & PROCESS METHODS COMPARISON CHART BAR CODE SCANNER EXIT WINDOWS & IMAGER WINDOWS SCANNER EXIT & IMAGER WINDOWS Laser Scanner Exit & Imager Windows Optical Polymers International is the world’s leading supplier of bar code laser scanner exit and imager windows to original equipment manufacturers and system integrators for the automatic data collection industry. We have developed a series of proprietary ADC formulations which meet or exceed all industry exit window standards and specifications for optical performance and physical properties. Our engineers will be happy to discuss your application and furnish samples for design evaluation and testing. Replacement Scanner Exit Windows Optical Polymers International is also the leading supplier of replacement bar code laser scanner exit windows and display windows for the repair and remarketing industry. Send us a sample of your exit or display window and we will quickly prepare a sample for your evaluation and testing along with a quotation. Vapor Deposition OPl's coatings are applied to exit windows and filters by vapor deposition and are extremely durable. These coatings provide state-of-the -art performance to maximize transmission and resolution by maintaining a sharp, crisp image. Antireflection Broad Band Antireflection coatings provide a superior solution to unwanted surface reflection from windows and filters. These coatings increase brightness and minimize transmission loss of the display information. Our coatings comply with Mil-C-14806 and Mil-M-13508. Typical spectral reflectance from a single coated surface is: 0.5% from 425nm-700nm. Conductive OPI offers a wide range of transparent vapor deposited conductive coatings for EMI-RFI shielding as well as antistatic purposes. Conductivities range from 10 ohms to 100 ohms per square while maintaining high light transmission. MANUFACTURING CAPABILITIES Precision Laser Cutting Exit windows are precision cut to size by state of the art computer controlled laser cutting systems to guarantee precision fit. Typical tolerances of laser cut windows are ± 0.005". Machining Secondary machining operations are available as needed to fabricate windows or filters that require beveled edges, counterbores, countersinks, steps or any other 3 dimensional feature. Silk-Screening Legends, symbols, masks and borders can be provided by front or rear surface screen printing on the window or filter. Any ink color or color combination is available. Optical Polymers can generate your artwork if needed. Mounting Adhesives Exit windows and display filters are often installed with pressure-sensitive adhesive tapes and foam gaskets. We maintain a large inventory of various tapes and foam gasket materials and can provide parts with the adhesive tape applied, ready for installation. All adhesives and foams are cut to exact size by computer controlled laser systems which maintain tolerances of ± 0.005". MATERIAL SPECIFICATIONS ADC cast optical sheet for exit window applications is available in the following colors and thickness. DOWNLOAD MATERIAL SPECIFICATIONS FLAMMABILITY ADC exit windows and display filters have been approved by UL and meet the following classification: UL94HB....Horizontal Burn Rating. SPECTRAL TRANSMISSION DOWNLOAD SPECTRAL TRANSMISSION CHARTS
Optical Polymers International is the world's leading supplier of imager and bar code scanner exit windows. Imager and Laser exit windows are manufactured from the highest quality Allyl Diglycol Carbonate, (ADC), CR-39® cast sheet. ADC cast sheet is a thermosetting transparent optical polymer, which has a unique combination of properties and advantages over other plastics for all imager and bar code scanner exit window applications. Seen above is the R&D lab. See all outstanding properties and features listed at left.
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