dontech overview 2018 - militram.com · © 2015 dontech inc. this document contains dontech...

© 2015 Dontech Inc.

www.dontech.comThis Document Contains Dontech Confidential Information1

Dontech Inc.700 Airport Blvd.Doylestown, Pennsylvania 18902 USA

Tel: (215) 348‐5010Fax: (215) 348‐9959www.dontech.com

ISO 9001:2008 Certified

Innovating Optical Solutions

Dontech Overview 2018


www.dontech.comThis Document Contains Dontech Confidential Information

Dontech Incorporateddesigns and manufactures optical filters, coatings and components to

enhance the optical and environmental performance of

electronic displays and precision optics.



Founded ‐ 1971 and privately held Facilities‐ Vertically integrated; cleanrooms (Class 10K, ESD protected); 25 custom Class 1K stations

Staff ‐ 85 personnel, Technically weighted Quality ‐ ISO Certified, AS9100 Certified

Dontech Stats



Military Electronics

● REQUIRMENTS

EMI/RFI Attenuation

Environmental

Optical performance

● APPLICATIONS

Handhelds

Tanks

Laptops



Avionics

REQUIREMENTS

EMI/RFI Attenuation

Environmental

Optical Performance

● APPLICATIONS

Cockpit Displays

Coverglass

Precision Optics



Medical Instrumentation REQUIREMENTS

EMI attenuation

Withstand wipe down

Impact

Contrast

APPLICATIONS

Patient monitoring

Diagnostic testing

Emergency treatment



Industrial Electronics/Test & Measurement

REQUIREMENTS

Impact and scratch resistance

Contrast Enhancement

Extended Operating Temperature

APPLICATIONS

Industrial Process Monitoring and Control

Mobile and Stationary Test Equipment

User Interface Solutions such as POS and Mobile Computing

Telecommunications Equipment

GPS and Navigational Equipment

Industrial Vehicle Control



Optical Filters - Product Features

• EMI/RFI shielding ‐ Conductive Grids and Coatings• Contrast and Environmental Enhancements• Bezel and Mounting Frame Assemblies, Environmental and Conductive Tapes and Gaskets

• Passive and Active LCD Enhancements• Low and High Temperature Compensation• NVIS Compatible Filtering



Contrast Enhancements

AR coatings‐ normal through 60 AOI. <0.1% photopicreflection for 0‐15deg

AR or AR/AG films‐ antiglare gloss levels from 10 to 80 at 60 per ASTM D2457, 2nd surface reflections removed

Polarizers‐ >99.9% polarizing efficiency‐ integration into glass or plastic and shielded filters, linear, circular or elliptical

Dielectric Coatings‐ Short Wave Pass Filters (Hot Mirrors), Long Wave Pass Filters (Cold Mirrors), Beamsplitters, Transparent Conductive Oxides, High Reflector Coatings (HR)



Display Display ““WashWash--outout””



UncoatedUncoated VAR-0.5VAR-0.5 VAR-0.25VAR-0.25

Picture of first surface reflections from a fluorescent light with grid on different coatings ranging from a hard coating with no antireflective properties to a high performance specular antireflective coating.

Picture of first surface reflections from a fluorescent Picture of first surface reflections from a fluorescent light with grid on different coatings ranging from a hard light with grid on different coatings ranging from a hard coating with no antireflective properties to a high coating with no antireflective properties to a high performance performance specularspecular antireflective coating.antireflective coating.

Anti-Reflection Coating Comparison



92 glossno Antiglare92 glossno Antiglare

71 gloss Antiglare71 gloss Antiglare

30 gloss Antiglare30 gloss Antiglare

1 glossAntiglare1 glossAntiglare

Picture of first surface reflections from a fluorescent light with grid on different antiglare coatings ranging from a hard coatingwith no antiglare properties to a very diffuse finish.

Picture of first surface reflections from a fluorescent Picture of first surface reflections from a fluorescent light with with grid on different antiglare coatings ranging from a hard coatinggrid on different antiglare coatings ranging from a hard coatingwith no antiglare properties to a very diffuse finish.with no antiglare properties to a very diffuse finish.

Anti-glare Coatings

AG coatings work to make the unwanted images unfocused to the eye, thereby reducing their interference with viewing of the intended image contained in the display.



EMI/RFI Shielding – Conductive Optical Grids

•Woven Mesh• 24 to 255 opening per inch mesh, 0.001” to 0.004” wire diameter

• Dontech owned plating lines including silver, copper and corrosion resistant matte blackening

• Patterned mesh• Customizable to any mesh count or pattern, 0.0005” line width

• Enhancements• Low diffuse reflection treatment to further improve contrast

• Orientation and pitch optimized to eliminate moirégeneration

• Custom conductivities



• Conductively coated glass or films

• ITO <1 to 250 ohms/sq

• Dielectrically enhanced/index matched to air, substrates or optical bonding adhesives

• Bus bar materials

• Metals including silver, copper, nickel, gold, chrome

• Chemistries/ methods including ceramic frit, epoxy, polyester, acrylic, vacuum deposited

EMI/RFI Shielding – Conductive Coatings



EMI/RFI Shielding EMI/RFI Shielding –– Conductive CoatingsConductive Coatings&

EMI/RFI Shielding – Conductive Optical Grids

15



Low and High Temperature Applications

Transparent heaters– Extend operating temperature (below ‐40C) – Standard power densities from 0.1 to 5.0 W/in2 at coating resistances of <1 to 250 ohms/sq

– Substrates:

• Glass (BK7, borosilicate, strengthened, and others)

• Plastic (acrylic, polycarbonate, PET, TAC)

– ThermaKlear FlexTM heaters

– Addition of thermistors and wire lead attachments

Heat Shield TM heat reflectors (solar and IR reflecting coatings)



Transparent Heater



Precision Optics

Capabilities/ Design Requirements

•Substrate configurations including prisms, windows, mirrors or lenses •Materials including optical glasses and crystalline substrates such as BK7, fused silica, zinc sulfide and sapphire.•Laser compatible EMI/RFI shielding•Laser compatible transparent heaters•Transparent conductive coatings - dielectrically enhanced for bonding or as antireflection coating



Product Categories/Design Inputs• EMI/RFI Attenuation• Environmental

• Operating and storage ranges of ‐40C to 71 C, ‐65 C to 85 C• Temp dwells at 85 C (20 hrs) and ‐55 C (92 hrs, display on)• Humidity and other tests per MIL‐STD‐810

• Durability• Scratch and abrasion resistance• Chemical resistance• Shock & Vibration• Impact Resistance

• Improved sunlight readability and contrast• Contrast improvements• Optical bonding



Thick Film Coating, Lamination and Optical Bonding

Thin Film Coating

Machining and Finishing

Value added integration – IMO‐BondTM

Automated and semi‐automated processing

Processing Capabilities



Custom coatings and construction to design inputs and customer specifications

Substrates include glass (soda lime, aluminoborosilicate, BK7, filter), polycarbonate, acrylic, polyethylene terephthalate (PET), triacetate (TAC), allyl diglycol carbonate (ADC), crystalline substrates (ZnS, sapphire)

Specialty materials and capabilities include chemical strengthened‐GorillaTM, DragontrailTM‐ and heat strengthened or tempered glass, UL rated fire resistant polycarbonates, color matched polycarbonates and acrylics

Optical bonding adhesives are custom formulated for specific surface chemistries and environmental requirements of the application.

Hardcoated, AR, AG and conductively coated materials in roll form, slit to specified width and length, with or without PSA

Thick Film Coating, Lamination and Optical Bonding



Thick Film, Lamination and Optical Bonding



Electron Beam, Thermal Resistance, CVD and DC Magnetron SputteringDeposition

Ion Beam Assisted Deposition Optical Monitor Residual Gas Analyzer High Temperature (> 250°C) or Cold Processing (< 120°C) Dielectric Coatings: Short Wave Pass Filters (Hot Mirrors), Long Wave Pass

Filters (Cold Mirrors), Beam splitters, Transparent Conductive Coatings: Conductive Transparent Oxides (ITO),

Metallic and Heat Reflecting Coatings (HR) Antireflective: Visible and Near IR, Capabilities <0.1% Photopic, Neutral

Color Coatings for Visible, Near Infra‐red and UV Expanded array of hydrophobic and oleophobic coatings

Thin Film Coating



Thin and Thick Film Coating Systems



Quality Structure

Dontech is an AS9100D and ISO 9001:2015 Certified Company.

•AS9100D ‐ Quality Management Systems ‐Requirements for Aviation, Space, and Defense Organizations

•ISO‐9001:2015 ‐ Quality management systems —Requirements



www.dontech.comTel: (215) 348-5010Fax: (215) 348-9959

dontech overview 2018 - militram.com · © 2015 dontech inc. this document contains dontech...

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