The design of Fresnel lenses stems from insight that the refraction that makes a lens work takes place at the lens’s surface, not at the bulk of the material.
Fresnel lenses are stepped-surface lenses that offer significant weight and volume advantages compared to their continuous-surface counterparts in certain applications.
FTI manufactures high-quality Fresnel lenses from a variety of polymer materials.
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.
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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. Although Fresnel lenses are imaging lenses, because they are typically of large aperture and because of scattering off of the groove transitions, they are not typically recommended for wide-field imaging applications.
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.
Negative focal length aspheric Fresnel lenses
Off-axis Fresnel lenses
Arrays of prisms (Fresnel prisms)
Rectangular arrays of Fresnel lenses
Determining the right optics for your project should be one of the first conversations you have —not the last.
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.
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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.
101 W. Morningside Drive
Fort Worth, TX 76110
Phone: (817) 926-7474
info@fresneltech.com
Fresnel Technologies, Inc. has specialized in high-precision polymer optics for nearly forty years. Our cutting-edge designs and unique expertise in molding and machining bring you the highest quality optics every time.
In order to best support our customers, we offer guidance and assistance throughout the entire product development process. From design, through prototyping, to production, we enable innovative optical systems.
Stock or custom, we’re your optics partner.
101 W. Morningside Drive
Fort Worth, TX 76110
Phone: (817) 926-7474
info@fresneltech.com
