1550 nM / 635 nM
one of our new Phase-shifting Fizeau Interferometers that operates in two
modes: Infrared or Visible—switch selectable. The instrument features a
fused silica collimator. Two separate lasers are employed – a single mode
diode laser operating at 1550 nM and single mode diode laser operating
at 635 nm. Both sources are dithered to produce speckle-free live
images on the computer monitor. Two cameras are used – one with sensitivity
at 1550 nM; the other is used for the visible. The infrared camera
provides a resolution of 320 x 256 pixels. The visible wavelength camera
provide resolution of 768 x 494 pixels.
The Model 155irVIS utilizes EndoPhazeTM for hysteresis-free phase shifting together with Durango Universal Interferometry Software to allow the operator to achieve highly accurate and repeatable measurements at both infrared and visible wavelengths.
In typical usage of a Dual Wavelength Interferometer, the operator can align the optical system and perform any necessary tip/tilt operations with the interferometer in VISIBLE MODE — greatly simplifying the procedure. Measurement of reflective surfaces can also be measured at 635 nm – providing higher accuracy.
A remote control box permits
adjustment of Zoom and Focus as well as controlling Iris diameter and Illumination
Intensity. This control operates at both 635 nm and 1550 nm wavelengths.
The Model 155irVIS is equipped with a 2.2 GHz All-in-One Computer
for high speed and smaller footprint.