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Optical adhesives provide low-stress, low-movement, and gap filling to 1/4 inch for lens bonding, laminating, and positioning, VCSEL potting, optical mounting, and fiber optic assembly applications. One-part optical epoxies cure in seconds to UV/Visible light and bond well to glass, metal, ceramic, quartz, and plastic substrates. High-tensile-strength, optically clear bonds of 3,000 psi, and shrinkage as low as 0.1% are possible.

  • Rapid UV/Visible light cure
  • Excellent light transmission properties
  • Low stress, shrinkage, and outgassing properties result in low movement
  • One component and no mixing
  • Optically clear formulations
Unit of Measure

Specifications

Brands

 N/A Dymax®

Nominal Viscosity

 N/A 60,000 cP

Uncured Appearance

 N/A Off White Opaque to Charcoal Translucent Gel

Volumetric Shrinkage

 N/A 1.5 %

Low Temperature

 N/A 80 to 85 ºC

Recommended Surfaces

 N/A Liquid Crystal Polymer (LCP) Polyphenylene Sulfide (PPS)

Recommended Substrates

 N/A Aluminum Cellulose Acetate Propionate (CAP) Flame Retardant (FR-4) Glass Polycarbonate (PC) Polyethylene Terephthalate Glycol (PETG) Polyimide (PA) Polymethyl methacrylate (PMMA) Polystyrene (PS) Stainless Steel Styrene-Acrylonitrile (SAN)

Industry Standards

 N/A American Society for Testing and Materials (ASTM) E595

Features

Features

 N/A
  • Fast cure with LED or UV/Visible light
  • Low temperature heat cure (80-85 ºC)
  • Low shrinkage and CTE
  • Single component
  • Cold ship/Cold storage at 1-5 ºC
  • Passes ASTM E595 Outgassing Testing

Additional Information

Additional Information

 N/A Low Shrinkage Optical Positioning Epoxy with LED and Heat-Cure Capability

Dymax® Low-Shrink™ OP-81-LS is a UV/Visible light-curable optical adhesive epoxy with very low shrinkage during cure and is ideal for rapid positioning of optical components. OP-81-LS cures with UV light and includes a low-temperature heat-curing function in applications where shadow areas exist or where heat cure only is preferred. This one-component optical epoxy is recommended for surfaces and substrates including polycarbonate, glass, acrylic and metallic surfaces.

OP-81-LS requires cold storage/cold shipping and should be kept between 1 ºC (34 ºF) and 5 ºC (41 ºF) in the original, unopened container.

Dymax® materials contain no nonreactive solvents and cure upon exposure to light. Their ability to cure in seconds enables faster processing, greater output, and lower processing costs. When cured with Dymax® UV light curing spot lamps, focused beam lamps, flood lamps, or conveyor systems they deliver optimum speed and performance for maximum efficiency. Dymax® lamps offer the optimum balance of UV and visible light for the fastest, deepest cures.