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Materials
SAPPHIRE

· Indices
of Refraction · Mechanical
Properties · Physical/Optical
Properties ·

Optimum Transmission
Range:

Ideal
Applications:

200 nm - 5.0
µm

With PbS, PbSe, and
InSb detectors. Spectral transmittance matches
spectral sensitivity of detectors

Infrared, high
temperature, high pressure, high thermal shock
environments

Scratch
resistant elements used in rain resistance, bar code
scanning
applications

Synthetic sapphire is an
anisotropic crystalline material composed of single crystal
aluminum oxide (Al2O3). Esco works
with only high quality, optical grade sapphire. It is
essentially 100% pure. The various properties of sapphire
are a function of the direction within the crystal with
respect to the optic axis. It has an extremely wide
transmission spectrum (150 nm to 6.0 µm). Its high melting
point, good thermal conductivity and low thermal expansion
provide excellent performance in high temperature
environments. The extreme hardness of sapphire makes it
difficult to polish using standard techniques. High optical
quality finishes on sapphire are not always
possible.

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Esco Products,
Inc.
Tel: 1-800-922-3726 | 1-973-697-3700 | Fax: 1-973-697-3011 |
[email-masked]
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2005 Esco Products
Inc.