Fractal Antenna Systems, Inc. (FRACTAL) has announced upcoming issuance of its patent on “flat lens” technology, creating new paths for imaging and control of microwaves, infrared, and visible light, the company said.
The breakthrough is enabled by the firm´s proprietary fractal and metamaterial technology.
For more than two decades, FRACTAL has explored, developed, and invented fractal-based electromagnetic technology, and used close-packed fractal resonators/fractal antennas for electromagnetic waves, with a broad and or multiband advantage.
Fractals have ´self-similar´ structure on a variety of size scales. Close-packing makes this a metamaterial, with fractals producing a unique composite, a ´fractal metamaterial´ that enables wave bending and control in ways previously not attained.
The new lens technology is a spinoff application of the firm´s invisibility cloak research, dating over a decade ago. Here, fractal metamaterials are configured as magnifiers and wave guides, producing super-thin flat lenses, bendable conformal lenses, and even edge-oriented lenses, with broad bandwidths. Conventional optics uses shaped, rigid, thick media, such as glass, with much larger form factors and weight.
A 17th century astronomer, Christiaan Huygens, provided the inspiration for the new lens technology. Huygens looked at waves as a superposition of combined ´wavelets´, like dropping several pebbles in a pond simultaneously to form an overall ripple. In electromagnetic waves, conventional resonators are much too large and/or interact deleteriously with each other when closely spaced, and this prevents using the full advantages of ´Huygens´ Principle´ as a lens.
The new flat lens technology breakthrough was enabled by fractals. Geometrically, the art-like fractals act as the tiny resonators envisioned by Huygens to make the ensemble of wavelets. They allow Huygens´ Principle to be realized in fact, with unprecedented control and shaping of the overall wave, at wide bandwidths, with multiple layers if desired.
Fractal Antenna Systems, Inc. (www.fractenna.com) supplies products and solutions for the world´s most demanding wireless, electromagnetic, and electronic applications. Backed by over five dozen US, and international patents, plus dozens of patents pending, FRACTAL is the recognized pioneer in fractal technology, with extensive research and field experience over 23 years in business. The company is a privately held and headquartered in Bedford, Massachusetts, USA.