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PTI 250RS

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Specifications

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HYSICAL Dimensions (H x W x D) 33.2 x 8.1 x 14.1 in. (843 x 206 x 358 mm) Weight 72.5 lb (33 kg)

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ERFORMANCE Measurement Uncertainty λ /20 Spherical testing:
(1) Plano testing: λ /10 RMS Repeatability λ /6000 (1 σ ) RMS Precision
(2) (3) λ /500 (1 σ )

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NVIRONMENTAL

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EQUIREMENTS Temperature 15 to 30°C (60 to 85°F) Rate of Temp. Change <1.0°C per 15 min Humidity 10 to 95% relative, noncondensing Vibration Isolation Required for vibration frequencies in the range of 1 Hz to 120 Hz

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OFTWARE

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EATURES Graphics Filled Plot, Oblique Plot, Live Fringe Display, Slope Plot Results PV, RMS, Astigmatism, Coma, Spherical Aberration, Zernike Polynomial Coefficients, # of Points, and numerous other results and plots Other Functions Save and load data and control settings, auto masking (circular & rectangular), surface form removal

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ENERAL

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PECIFICATIONS Instrument Type Full featured small aperture Fizeau interferometer with phase measuring and advanced analysis capability. Applications Inspection of small spherical and flat optics. Quantitatively measure surface figure, transmitted wavefront quality, and radius of curvature. Configuration Downward looking vertical. Contact ZYGO for other configurations Light Source 655 nm laser diode, Class I Test Beam Dia. 25 mm Camera Array 640 x 480 pixels Image Focus ±250 mm manual adjustment Part Alignment Twin spot alignment on integrated LCD screen Part Viewing Live Video Display on computer monitor Computer High-performance PC with hard drive, CD-ROM, floppy drive, FireWire port and 17 in. monitor; printers and other options available. Software ZYGO MetroPro software running under Microsoft

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CCESSORIES Transmission Flat
(4) λ /20 25 mm and 2 inch aperture Transmission Spheres λ /10 25 mm aperture: f/0.58, f/0.7, f/1.0, f/1.5, f/2.4, f/3.3, f/4.8 2 inch aperture: f/0.67, f/0.75, f/0.9, f/1.25, f/1.8, f/3.3, f/6.0 Aperture Converter 25 mm to 6 mm with integrated transmission flat 1 inch to 2 inch with receptacle and tip/tilt adjustment Part Stage/ Fixturing Manual X-Y and Tip-Tilt mount with a self centering element holder. Radius of Curvature Digital encoder with 30mm range, 1
(4) µ m resolution, and digital readout
1 Measurement uncertainty depends upon the accuracy of the transmission element, geometric distortion of the optical and video system used for imaging, and the number of fringes used in the evaluation. The PTI is designed to provide better than λ /20 performance when using 7 or fewer fringes for plano evaluation. 2 Quoted repeatability is for 10 measurements of the same cavity, with 16 averages per data set. The specification represents the 1 σ value. 3 ® Windows XP Professional Power Requirements 100 to 240 VAC, 50/60 Hz
Quoted precision is the average rms of 10 data sets with a reference measurement subtracted. Each data set includes 16 averages and the reference measurement is the pixel-by-pixel average of 10 measurements. 4 Transmission elements are pre-aligned and attach to the instrument with a bayonet mount. Specifications subject to change without prior notice.

Zygo Corporation Laurel Brook Road Middlefield, CT 06455 Phone: 860-347-8506 Email: inquire@zygo.com Website: www.zygo.com SS-0029 7/05© 2005 Zygo Corporation