• 4D Technology Corporation

    3280 E Hemisphere Loop Suite 146
    Tucson, AZ 85706
    United States
    520-294-5600
    520-294-5601
    Visit Company Website
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    More Info on 4D Technology Corporation

    4D Technology is a leader in innovative metrology products for measuring surface quality and surface defects on precision surfaces, as well as the surface and wavefront quality of optics. 4D’s patented Dynamic Interferometry®technology enables 4D’s laser interferometry products to measure in difficult environments, where vibration, air turbulence or rapid motion have traditionally prevented accurate measurement. 
    4D Technology is a subsidiary of Onto Innovation.  For more information visit www.4dtechnology.com.

    Products

    PolarCam™ polarization cameras capture a snapshot of multiple polarized images from each video frame, enabling a range of image enhancement techniques and polarimetric measurements...
    The NanoCam Sq measures surface roughness despite vibration and turbulence. Applications include surface roughness of small and large coated/uncoated optics, on-machine surface...
    Easy to-position, fiber-coupled and fully motorized, the compact and lightweight PhaseCam is ideal for on-machine metrology, remote mounting, in measurement towers or pressure...
    The compact AccuFiz offers an unmatched combination of performance, quality and value, for high accuracy shape and transmitted wavefront quality measurements of optical surfaces...

    Videos

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    Sponsored
    While at SPIE Optics + Photonics 2022, Erik Novak, vice president and general manager of 4D Technology, an Onto Innovation business, discusses the company’s PhaseCam 6110 dynamic...

    Articles

    (Image credit: 4D Technology)
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    The 1-Mpixel AccuFiz SWIR Fizeau interferometer operates around the 1500 nm wavelength.
    (Image credit: 4D Technology)
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    The AccuFiz Duo dynamic interferometer combines patented AccuFiz D short coherence capabilities with long coherence capabilities into a single system.
    FIGURE 1. Dynamic interferometry methods and configurations are shown.
    Producing NASA’s James Webb Space Telescope’s sophisticated optical system required new technology and methods to ensure its components can perform as designed—and it presented...
    4 D Technology
    The PhaseCam 6110 interferometer features a new 4 Mpixel camera, with 0.0005 wv repeatability and 0.01 wv RMS precision.
    4d Technology Phasecam 6110
    The PhaseCam 6110 laser interferometer features a lightweight, compact design to improve positioning, speed alignment, and lower installation costs.
    (Photo 88380469 © ibreakstock | Dreamstime.com)
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    Interferometry products developer 4D Technology has appointed Erik Novak, Ph.D., as its general manager.
    FIGURE 1. An optical profiler mounted on a robot provides roughness metrology for large or highly curved optics.
    A robot-mounted dynamic optical profiler provides automated roughness measurements for large and complex optics.
    A transparent dome mounted for measurement with a short coherence laser interferometer.
    Combining a short coherence source with an adjustable path-match mechanism makes it possible to isolate and measure the front and back surfaces of transparent components as thin...
    FIGURE 1. In a Fizeau interferometer, the reflected beam from the reference surface and the reflection from the test surface combine and both reverse their direction, passing through the same optics on their way to the camera.
    Digital-, discrete-, and continuous-zoom configurations can optimize testing of large and small optics with modern interferometers; however, each method has tradeoffs that users...
    (Courtesy of Blackmore)
    FIGURE 1. Four Blackmore lidar sensors are mounted atop a BMW X5 test vehicle on the road.
    The overlap is large between automotive lidar and familiar names in the photonics industry.

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    Additional content from 4D Technology Corporation

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    The PolarCam snapshot micropolarizer camera simultaneously captures four polarization states in each video frame.
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    The Vertical Digital Radius Slide (VDRS) allows precise radius of curvature (ROC) measurement of concave or convex optics.
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    The FlexCam is a compact, high-resolution 3D metrology system for in situ roll-to-roll measurement of flexible electronics.
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    The digital radius slides provide accurate axial positioning for measuring the radius of curvature of concave or convex optics.
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    The AccuFiz interferometer is designed for surface shape and transmitted wavefront quality measurements at midspatial frequencies.
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    The NanoCam Sq dynamic profiler uses dynamic interferometry via a high-speed optical sensor.
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    The extended precision package for the PhaseCam 6000 more than doubles the laser interferometer’s precision in measuring the surfaces of optics.
    (Courtesy of John Hill/Large Binocular Telescope Observatory)
    FIGURE 1. Measurement of large optics, such as this 8 m primary mirror for the Large Binocular Telescope Observatory (see http://lbtwww.arcetri.astro.it/) require metrology systems that can function despite vibration, turbulence, and other challenges.
    Meter-scale optical elements present a set of unique challenges, not just in fabrication but also to ensure conformance to specification. Dynamic interferometry offers speed and...
    Tucson, AZ--4D Technology is introducing of its latest Fizeau instrument, the FizCam 2000.
    FIGURE 1. The James Webb Space Telescope, for which the main contractor is Northrop Grumman Space Technology (Redondo Beach, CA), will have an 18-segment primary mirror with overall diameter of 6.5 m. This construction reflects the trend in segmentation of primary mirrors for terrestrial and space-based telescopes.
    Multiple-wavelength interferometry can provide a fast, high-quality alternative to contact profiling and scanning techniques.