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  • 910A Spatial Filters
Nov 2003
Newport CorporationRequest Info
Improved Performance, Stability and Flexibility
IRVINE, Calif., Nov. 21 -- Newport Corp.'s new 910A series spatial filters use a novel optomechanical design that enables more rapid alignment and precise adjustment and delivers greater long-term stability than anything previously available. The modular 910A series offers a selection of nine different focusing objectives and 11 pinhole apertures, which can be easily changed for maximum operational flexibility. The optics are all antireflection coated for use over the 400-nm to 700-nm wavelength range.
   The 910A series spatial filters are versatile laboratory tools ideal for use in any application that requires a visible laser beam free of spatial inhomogeneities. Typical uses include investigations in holography, interferometry, laser-based imaging and metrology in the semiconductor, communications, life science and research markets.

The 910A series features five-axis alignment -- xy translation of the pinhole, plus true gimbaling of the entire assembly. These adjustments are accomplished with high-resolution (100 threads/inch) screws, featuring large-diameter knobs for extremely sensitive and precise adjustment. Translation along the optical axis is also provided via a knurled ring that does not cause rotation of the pinhole, thus maximizing axial stability. Independent locks for each axis of translation and rotation securely hold the adjustment mechanism itself, not just the actuator screws, in order to maintain stable alignment. Moreover, engaging or disengaging each lock has negligible influence on position. These compact spatial filters are supplied with a removable slotted base plate for direct mounting to any surface with a ?-20 on 1 inch, or M6-1.0 on 25 mm, hole pattern. Alternately, they can be post-mounted using either a 8-32 or M4 threaded hole in the unit's lower surface.

For more information, visit:; e-mail: David Rossi,

Newport Corp.
1791 Deere Ave.
Irvine, CA 92606
Phone: 800-222-6440 (in US); or 949-863-3144
Fax: 949-253-1800


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The optical recording of the object wave formed by the resulting interference pattern of two mutually coherent component light beams. In the holographic process, a coherent beam first is split into two component beams, one of which irradiates the object, the second of which irradiates a recording medium. The diffraction or scattering of the first wave by the object forms the object wave that proceeds to and interferes with the second coherent beam, or reference wave at the medium. The resulting...
The study and utilization of interference phenomena, based on the wave properties of light.
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