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 2024-08-09 20:52:52

Lenticularlens

CACI’s laser communications technology is aboard NASA’s Psyche spacecraft, a first-of-its-kind deep space and optical communications (DSOC) technology demonstration mission to the Psyche asteroid.

Download the brochure to learn more about the development of our Fresnel lenses, lens specifications, and details on how to order the lens you need.

Our multi-disciplinary teams, located in California, Florida, and New Jersey, design and build the most mature optical communications technologies right here in the United States. For more than two decades, we have developed advanced capabilities that meet and exceed U.S. government requirements – and are ready to deploy in support of deep space exploration and space operations from a variety of orbits, including low earth (LEO), medium earth (MEO), highly elliptical (HEO), and geostationary (GEO).

Fresnel Effect

Fresnel Technologies, Inc. specializes in the design and manufacturing of molded plastic Fresnel lenses, molded polymer optics in general, and infrared-transmitting optical materials. We offer design assistance, diamond machining, prototyping, tooling, and production. Stock or custom, we’re your optics partner.

CACI’s laser sensing technology enables near-term airborne and space light detection and ranging (LiDAR) applications mainly for intelligence, surveillance, and reconnaissance (ISR) missions, where there is an increased need for wide-area surveillance and long-range object identification.

Fresnel screen

CACI’s optical technologies enable highly secure communications in RF-challenged, restricted, or denied environments. Optical carrier frequencies can transmit more data with lower SWaP than comparable RF systems. Our optical technology has deployed onboard missions such as NASA’s integrated laser communications relay demonstration (LCRD) Low Earth Orbit User Modem and Amplifier Terminal (ILLUMA-T) now operating on the International Space Station.

Regardless of the satellite manufacturer, CACI is often the secret ingredient to the most successful optical communications missions. We bring a rare synergy of research and development coupled with our valuable intellectual property to meet ever-increasing mission demands.

Whether it’s for land, air, or space, our people continually develop new applications for a range of missions – from tactical operations to national intelligence needs.

CACI produces advanced photonics-based communications, sensing, and processing technologies for space, air, land, and maritime environments. These include optical modems and terminals; high-power sources for free-space optical (FSO) communication and remote sensing; and space exploration systems.

Fresnel Technologies makes a variety of stock Fresnel and related optical components to meet your needs. We can also design and construct custom Fresnel lenses and polymer optics as requested. Our Fresnel items fall into a number of categories, but they are all made from polymer materials. Generally, our engineers design these components with thicknesses under 1/4" (6 mm) with a stepped surface.

Fresnel light

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Today's modern computer-controlled machining methods can be used to cut the surface of each cone precisely to bring all paraxial rays into focus at exactly the same point, avoiding spherical aberration. Better still, newer optical manufacturing methods can be used to cut each refracting surface in the correct aspheric contour (rather than as a conical approximation to this contour), thus avoiding even the width of the groove (typically 0.1 to 1 mm) as a limit to the sharpness of the focus. Even though each groove or facet brings light precisely to a focus, the breaking up the wavefront by the discontinuous surface of a Fresnel lens degrades the visible image quality. Except in certain situations, Fresnel lenses are usually not recommended for imaging applications in the visible light region of the spectrum.

Opticallens

CACI’s CrossBeam was the first Space Development Agency (SDA)-compliant terminal to successfully complete optical communication terminal (OCT) interoperability testing - establishing a consistent data communication link with the reference modem.

CACI’s optical communication, sensing, and processing solutions are the U.S. government’s preferred choice for secure communications across several orbits and missions.

Read Linda Braun’s latest commentary, “Lighting the Future: How CACI is Revolutionizing Optical and Photonic Solutions,” to learn more about our advancements in optical communications for our defense, intelligence, and other national security customers.

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fresnel lens中文

Our team of optical experts can help you bring your project to life with custom or off-the-shelf designs. We’re here to help you find the right solution.

Fresnellens

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The highly contested space environment demands secure, reliable, and resilient communications. CACI’s low-risk optical communication, sensing, and processing technology enables the success of some of our nation’s most critical missions from the battlefield to deep space.

Our technologies increase efficiency through tradeoffs between range and bandwidth and enable low probability of intercept (LPI) and low probability of detection (LPD) with reduced size, weight, and power (SWaP) and inherent immunity to radio frequency (RF) interference and jamming.

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