In partnership with: ZYTRONIC OPTICAL FILTERS are used to enhance the readability of all types of  electronic displays by controlling light transmission, reflection and absorption.   The filters can also provide protection of the display from abrasion and damage  from impact thereby extending the life of the display.   Both monolithic and multi-layer composites in glass or polycarbonate or acrylic  are available.   The optical laminations are manufactured by bonding together, under carefully  controlled conditions, two or more glass or plastic materials using proprietary  bonding techniques.   ZYTRONIC produces a wide range of OPTICAL FILTERS   which are designed to meet specific customer requirements for viewability of  display, systems in different environmental conditions.   ZYTRONIC OPTICAL FILTERS can incorporate:   - Anti-reflection coatings to maximize transmission.   - Anti-glare finishes.   - Tinted or neutral density substrates/ interlayers to improve contrast.   - Transparent conductive coatings for static dissipation or electromagnetic  shielding.   - Micro-fine mesh for electromagnetic shielding.   - Circular polarizers to enhance contrast.   - Transparent conductive coatings or wire heating filters for de-misting or de-icing.   - Infra-red coatings to eliminate solar gain.   - Louvered filters for privacy viewing.   - Screen printing.   - Thermally tempered or chemically strengthened glass for enhanced impact  resistance.   Performance Characteristics Spectral Optical transmission, absorption and  reflectivity are determined by the characteristics and color of the composite, open  area of the mesh screen and coatings applied to the composite surface.   Typical transmissions curves are available on request.   Durability OPTICAL FILTERS have been subjected to environmental tests  including temperature and humidity cycling, thermal shock and vibration.   No evidence of discoloration, delamination, shock abrasion or fungal growth has  been observed. For recommended operating and storage temperatures please  contact the Technical Sales Department.   Material Specification Substrates Glass Standard annealed glass is supplied as  per BS EN 572 Parts 1 & 2 (1995). Special optical glasses can also be laminated.   For applications where high impact resistance is required, heat strengthened or  chemical strengthened glass can be supplied.   Acrylic Supplied as per BS EN ISO 7823 Parts 1 & 2.A wide range of colors are  available designed to meet the various types of displays.   Polycarbonate Supplied as per BS EN ISO 11963 (1996).   Surface Finishes Surface finishes are used to improve the durability of the optical  substrates and to control surface reflections.   ZYTRONIC’s optical finishes include clear hard coatings,   diffuse antireflection hard coatings and anti-reflection coatings.   Diffuse Finishes Glass is supplied with a range of diffuse etches, characterized by  gloss level including a high resolution etch.   Typical etches are 75 ± 15 and 90, 120 and 140 ± 10 gloss units.   The gloss is measured using a Novogloss meter or equivalent at 60° angle of  incidence. Polycarbonate is available with a clear hard coat anti-scratch coating  or diffuse coating.   The gloss levels include 90, 60, 40 and 12 ± 10 gloss units respectively. Cast  acrylic can be supplied with a diffuse etch hard coat with gloss levels of 80, 60  and 40 ± 10 gloss units respectively.  Extruded acrylic is supplied with a 140 gloss unit etch. Anti-Reflection Coatings  Glass (I) Robust ZAR anti-reflection coating is specified for external applications  and complies with all the rugged environmental requirements as stipulated in BS  ISO 9211-4 (1996), BS 9022- 2 (1994) E-tables 3 and 5 and BS 2011 (1982)   Section 4.2, 5.2 and 6.2, achieving resistance over 200 abrasion strokes. (II)  Standard anti-reflection coating supplied complies with:   - MIL-C - 675A/B - MIL-C - 48497 - MIL-E – 12397B and MIL-STD-810C  Polycarbonate and Acrylic Standard anti-reflection coatings are available on both  polycarbonate and acrylic.   Transparent Conductive Coatings Indium tin oxide coatings, produced by vacuum  deposition, are available with resistivity's ranging from 5½ to 300½.   The coatings offer high light transmission and good electromagnetic/radio-  frequency shielding and electrostatic   dissipative properties.  Circular Polarizers   A filter combining a linear polarizer with a quarter wave retarding filter results in  the exclusion of the reflected light from the reflective surface.   The linear polarizer maximizes the light output from the display whilst the quarter  wave retarder prevents the reflected light from passing back through the polarizer.   Louvered Privacy Filters A unique micro-louvered filter, where the transmitted  light in excess of a pre-determined angle of incidence nominally 30° or 24° off  axis is   fully occluded offering the user complete privacy and contrast enhancement whilst  viewing the display in highly illuminated environments.   Infra-Red Reflective Filters A filter incorporating an IR reflecting medium,  reflecting more than 50% of the invisible IR, whilst transmitting more than 70% of  the visible light. The IR reflecting medium can be included with various contrast  enhancing substrates or interlayers.   Filter Sizes and Tolerance A wide range of sizes are available please contact the  Technical Sales Department to discuss your specific requirements.  © Iberhermes 2018 Terms and Conditions  /  FAQs