Window Material Sources

This document lists some various Anti-Reflective Coating manufacturers that have either been used by Opticon or approved for use by Opticon in the United States.

Suggested Window Properties: Property Description

• Material: Clear cell-cast acrylic. • Spectral Transmission: 85% minimum at 400 - 700 nm. • Thickness: 0.059 ± 0.005 • Wavefront Distortion (transmission): 0.2 wavelengths peak-to-valley maximum over any 0.08 in. diameter within the clear aperture. • Clear Aperture: To extend to within 0.04 in. of the edges all around. • Surface Quality: 60-20 scratch/dig minimum

Window Coatings

• Anti-reflection (A.R.) coatings: Apply these type coatings to achieve the maximum depth of field decoding range and to improve the possible pitch range of acceptable window angles and positions. A.R. coatings also have very poor abrasion and scratch resistance; making only single-side AR coating most practical (the AR coated side of the window typically faces the interior of the imager module). • Anti-scratch coatings: Apply Polysiloxane type coatings to plastic surfaces to improve the surface resistance to both scratch and abrasion.

The table below lists some exit window manufacturers and anti-reflection coaters: Company Name Offers Notes Evaporated Coatings, Inc. 2365 Maryland Road Willow Grove, PA 19090 (215) 659-3080 Anti-reflection coater Acrylic window supplier Anti-reflection coater

Cat-i Glass / Elgin Precision Glass P.O. Box 208 865 Commerce Dr South Elgin, IL 60177 (847) 931-8986 Cutting, silk-screening & Coatings for a variety of front surface mirrors, AR coatings, IR Blockers and more. Glass fabrication services and glass coatings only:

Fosta-Tek Optics, Inc. 320 Hamilton Street Leominster, MA 01453 (978) 534-6511 Cell-caster, hard coater, laser cutter CR39 exit window manufacturer

Optical Polymers Int. (OPI) 110 West Main Street Milford, CT 06460 (203) 882-9093 CR-39 cell-caster, coater, laser cutter CR39 exit window manufacturer

Polyone (Polycast™) 70 Carlisle Place Stamford, CT 06902 (800) 243-9002 Acrylic cell-caster, hard coater, laser cutter Acrylic exit window manufacturer

TSP 2009 Glen Parkway Batavia, OH 45103 (800) 277-9778 Acrylic cell-caster, coater, laser cutter Acrylic exit window manufacturer

EMF Corporation 239 Cherry Street Ithaca, NY 14850 800.456.7070 AR520 AR Coating AR520 is an AR coating designed specifically for plastic substrates.