Page 5 - Shimadzu IRAffinity-1S

Realizing High Performance

Surpassing General-Purpose Instruments in
Sensitivity and Performance

The IRAf nity-1S incorporates a high-throughput optical element and a dynamic alignment mechanism.
These features allow the user to experience a level of performance that surpasses that of
general-purpose instruments.

Highest S/N Ratio in Its Class: 30,000:1

Through the incorporation of a high-energy ceramic light source, a temperature-controlled, high-sensitivity DLATGS detector,
a high-throughput optical element, and the optimization of the electrical system and optical system, the IRAfnity-1S achieves the highest
S/N ratio in its class.

Highly Stable Interferometer Achieved with Dynamic Alignment Mechanism

The state of interference in an FTIR instrument is extremely delicate, and the interferometer must be controlled with high precision. With
the IRAfnity-1S, the moving mirror is run very smoothly and precisely by a €exible joint system (FJS), and the interferometer is optimized
and stabilized by an improved dynamic alignment mechanism. This makes it possible to perform measurement in a stable state with a short
warming-up time.

Dynamic Alignment Mechanism (JPN patent No. 3613171)

The state of interference of the He-Ne laser used for sampling by the interferometer is continuously monitored and compared with the
state under the optimum conditions previously recorded by the system. The difference between these states is calculated by an advanced
digital signal processor, and the inclination of the xed mirror is changed continuously in order to eliminate any difference. This feedback
is even provided during sample measurement. There is also an automatic adjustment for the interferometer that performs this operation.

Power He-Ne laser
ampli er
Interference
conditions DSP
extraction circuit
FJS Moving mirror

Fixed mirror

Ceramic light source

DLATGS detector Beam splitter
Laser detector

IRAf nity-1S
Fourier Transform Infrared Spectrophotometer 5