Tools of the trade - Vol 18 - Thorlabs - #749

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Norland Optic Adhesives are clear, one part adhesives that contain no solvents. When exposed to UV light (see previous page), they gel in seconds and full cure in minutes to give a tough resilient bond. Each of the six formulas listed below has been optimized to provide excellent bonding for specific applications.

■ Low Shrinkage/Low Stress

■ Strong Glass to Metal Bonds

■ Recommended UV Curing Intensity >2 mW/cm² @ 365nm

■ 1 Ounce Dispenser Bottle

See page 734 for UV Curing Lamp.

characteristics of this adhesive are its low fluorescence and its excellent

transmission in the UV range. This

adhesive is also suitable for bonding glass to metal. The adhesive cures well in thick sections and has low shrinkage and a slight resiliency to minimize strain.

NOA65 when cured is a very flexible

adhesive and was designed to minimize strain. NOA65 is especially suitable where the adhesive cross section would be relatively thick. NOA65 has enough elasticity to keep strain to a minimum even when dissimilar materials, with different coefficients of expansion, are bonded together. Typical applications would be potting of lenses in metal mounts and bonding plastic to glass. Also suitable as a blocking cement for

temporary mounting on polishing blocks.

NOA68 is a flexible adhesive designed to give improved adhesion to many plastics

such as acrylic, polycarbonate and CAB.

Suggested uses for NOA68 include

bonding compound plastic lenses, laminating polarized film between glass or plastic, mounting lenses in metal or plastic mounts and bonding cover glasses onto plastic optics.

NOA81 is an extremely fast curing

adhesive. NOA81 has similar qualities to the NOA61, yet it can cure 3 to 5 times faster. Not only is it a faster curing adhesive, it is also tougher and stronger. NOA81 is recommended for applications that require extra toughness or speed in curing.

NOA60 is typically used as a mounting

cement for lenses, for the assembly of doublets or prisms, or for mounting components between a sandwich of glass or methacrylate plastic. Because of its

excellent insulating properties, NOA60

can also be used as a protective overcoat

on electrical components. NOA61 is designed to give the best

possible bond to glass surfaces. It meets

Federal Specification MIL-A-3920 for

optical adhesives and is approved for use

on all government contracts specifying

such adhesives. This adhesive has excellent adhesion to metal, fiberglass and glass-filled plastics.

NOA63 can be used for bonding

achromats, prisms and all other precision compound optics. The outstanding

■ Temporary Bonding of Lenses to Metal NBA107 is a single component, UV curing adhesive used to temporarily bond optical ■ Ideal for Polishing Applications

components to metal polishing fixtures. The adhesive cures by exposure to UV light, thus ■ Cure with UV Light, Remove with

Warm Water

eliminating the heat induced strain typical of hot pitch mounting methods. Deblocking, or removal of the optic is accomplished by immersing the optic in warm water (80°C).

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