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Graham Optical Systems offers its HPS series of horizontal Phase Interferometers configured for Plano or Spherical work.   A 1/20 wave bayonet-mount transmission flat is standard equipment. For spherical work, appropriate transmission spheres are required and are available as accessories.  All HPS interferometers also include remote control of  focus, zoom and intensity. Durango Universal Interferometry Software interacts with Graham's EndoPhazeTM system to achieve smooth phase -shifting with no hysteresis.  The software, Image Acquisition Board, and Data Acquisition Board are installed in a 3.02 GHz computer with an Intel Core i3-530 Processor.  A 22-inch TFT wide screen monitor is included.  Durango provides a wide selection of data outputs and colorful graphics and offers a live interferogram on the computer monitor so no separate video monitor is required. The operator can select the features that he wishes to display on the screen from among an assortment of graphics and data reports. Durango permits the QC manager to set the criteria for the pass/fail feature, thus permitting the routine measurement of test pieces by less skilled personnel.  These rugged instruments are equally at home in the QC lab or in the optical fabrication shop. With excellent repeatability and reproducibility, this precision instrument provides the metrology required for all of your plano measurements

SPECIFICATIONS	BENEFITS
2-inch aperture (50.8 mm) 4-inch aperture (101.6 mm ) 6-inch aperture (152.4 mm) 8-inch aperture (203.2 mm)	Select the Model that best suits your purpose
1/20 wave fused silica reference surface	High accuracy
Proprietary Optics for superior performance	Highest contrast and cleanest interferogram of any interferometer available today.  No bull's-eye aliases!
Rugged construction	High mechanical stability
A Turnkey System	User Friendly and ready to go
Horizontal Orientation	Easily accommodates either Plano or Spherical measurements
Two spot alignment	For quick setup on each new part tested
Single Mode Diode Laser source (635 nm)	Dithered for Sharp, speckle-free images
Zoom Optics	Standard
Zoom, Focus, Iris, Intensity	Remote Control Standard
EndoPhazeTM for hysteresis-free phase shifting	For smooth hysteresis-free phase shifting!
CCD Camera 768(H) x 494(V) pixels	High resolution
Durango Universal Interferometry Software*	Windows environment PV and rms in users choice of units High level of repeatability Excellent reproducibility Large choice of graphic displays Dynamic Sections 3-D OPD Plot Reference Subtraction MTF and PSF graphics and plots Zernike Polynomials available for all measurements Seidel Coefficients available Pass/Fail Feature Selection of colorful, printable reports
3.02 GHz computer with INTEL® Core™ i-3 540 processor	For high speed data reduction and phase shift control
22-inch TFT Wide Screen Monitor	For easy viewing
Live interferogram on computer monitor	For quick inspection without extra video monitor
Tip/Tilt plate with bayonet mount for Transmission Flat or Transmission Sphere.	Standard Equipment
Repeatability	1/300 wave ( <2 nm PV )     1/10,000 wave ( <0.1 nm rms)
Reproducibility	Excellent
Data Acquisition time 30 milliseconds (typical)	Fast
Data reduction time  ~3 seconds (typical)	Fast
Footprint Model 2HPS (L x W x H) 12 x 10 x 8.5 in. Footprint Model 4HPS (L x W x H) 20 x 14 x 8.5 in Footprint Model 6HPS (L x W x H) 24 x 20 x 10 in. Footprint Model 8HPS (L x W x H) 30 x 24 x 12 in.	Small footprint
Weight Model 2HPS  40 pounds Weight Model 4HPS  60 pounds Weight Model 6HPS  75 pounds Weight Model 8HPS 100 pounds	Solidly built for high stability
Power 117 V 60 Hz 2 A (or 240 V 50 Hz 2A)	Wired with plug to suit the customer's power source
Manual	Illustrated Operator's Manual
NOW WITH 2-YEAR WARRANTY!	New two-year limited warranty against defective components or workmanship. Extended warranty available.

Graham Optical Systems,  9530 Topanga Canyon Blvd., Chatsworth, California 91311 For Further Information today, call Gordon Graham today at (818) 700-1263  E-mail:  techinfo@grahamoptical.com Copyright © 2011 Graham Optical Systems    All Rights Reserved    EndoPhazeTM is a trademark of Graham Optical Systems  *Durango is a trademark of Diffraction International       This page last updated November 27, 2011