High Precision Adhesives
High Precision Adhesives

NTT-AT provides detailed solutions that meet customers' needs for various types of optical adhesive.

Features

We recommend adhesives which can easy to fix optical components  with sub-micron accuracy.

  • Shrinkage rate during curing is very low (less than 0.5 %).
  • Thermal expansion coefficient is small (less than 20ppm/°C).
  • Using ultraviolet ray curing makes alignment easy.



http://www.ntt-at.com/product/adhesive_hp/image/High_Precision_01.jpgRelation between shrinkage during curing and thermal expansion coefficient

Excellent Durability

No peeling after 200 cycles in the heat cycle test (simplified test)

Low shrinkage rate

Shrinkage rate during curing is 0.5% (AT3862P)

Thermal expansion coefficient is small

CTE is less than 20ppm/°C
 

High Precision Adhesives Inquiry

Specifications

Model#
[Main ingredient]
Curing
conditions
[irradiation level &time]
Curing
Shrinkage Rate
(%)
Viscosity
(mPa・s)
Glass
transition
temperature Tg
(°C)
Thermal
Expansion
Coefficient
(ppm/°C)
Bending adhesionstrength
 (kgf/cm2)
Initial period 121℃100%
after10h
AT3862P
[Epoxy]
100mW/cm2 2min 0.5 180,000 195 20 >210 >114
AT3916P
[Epoxy]
100mW/cm2
2min
0.9 36,000 233 18 >220 >128
*These products are transported at normal temperature. However, please store in a frozen state.

Cases

[Usage Examples] Fixation of a micro-ball lens

High Precision Adhesives/Photograph image High Precision Adhesives /Temperature Properties of LD Module
Photograph image Temperature Properties of LD Module


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