Optical Adhesives

1. Adhesive for Optical Path Link-up

[Characteristics] Precision refraction index of 1.46-1.57±0.005 (Na-D) provides controllability. Ultraviolet curing makes alignment easy. Very little adhesion loss due to heat or moisture, providing high durability.

2. Adhesives for Array Assemblies

[Characteristics] Excellent durability Just right viscosity makes it easy to use Easy to polish Heat resistance to over 200°C (AT3925M).

3. High Precision Adhesives

[Characteristics] Minimal position changes due to curing time and temperature change allowing for even submicron adhesion. AT9290F is transparent upon curing

4. High/Low Refractive Index Adhesives

• Precision refraction index of 1.42-1.46±0.005 (Na-D) as the low RI and 1.57-1.70±0.005 (Na-D) as the high RI provides controllability.
• Ultraviolet curing makes alignment easy.

*This series of adhesives includes new chemicals and necessary documents may be required by the importer. Please check the chemical import laws in your country.

5. Sealant for Optical Parts

[Characteristics] Minimal internal stress develops during hardening and the heat cycle. Low moisture absorption even at high temperatures.

6. Optical Waveguide Formation Resin

[Characteristics]

• Superior optical transparency

	Main Ingredient	Range of Refractive Index Adjustment	Characteristics
Core/Cladding set*1	Epoxy Type	Core: nD = 1.52±0.005 Cladding: nD = 1.50±0.005	Viscosity = 2,200cP Tg = 222°C Δn = 1.3%(@830nm) Viscosity = 2,900cP Tg = 198°C

*1:Content product is "Non-medical use, deleterious substance" (Please refer to MSDS for handling.)

Others

In addition to the above, we offer UV or heat stiffening adhesives made-to-order to match the special needs of our customers. Please feel free to ask to NTT-AT.
Just click "FAQ" for answers to Frequently Asks Questions about optical adhesives.

Commissioned Development

Developing materials with a purpose
(Examples: Optical adhesives for bonding optical parts, Optical adhesives for heatproof ONU, sealants for optical parts, hot-melt adhesive for reinforcing optical fiber connections, and adhesive designed for AURORA optical parts assembly.)

Technological Investigation, Consultant

Purposeful investigation into adhesive materials and technology, including troubleshooting help, to find solutions and applications for problems related to adhesive technology.
(Adhesives for Polyimide/Liquid Crystal Polymer and molding/coating resin for optical parts)

Evaluation Testing

Optical properties (refractive index, optical transmittance, and optical absorptance rate, etc.)
Electrical properties (permittivity and resistivity) and mechanical properties (bonding strength and viscoelasticity, etc.)
Heat properties (coefficient of thermal expansion and thermogravimetric analysis, etc.) and viscosity, density, and curing shrinkage rates, etc.

Durability Testing

Various environmental tests (longevity and durability tests on materials, model parts, and individual parts)

Dispenser for Optical and Electric Parts

We will provide technological consultation to help in the selection of the optimal dispensers for applying each kind of adhesive materials.