Sun Phocus Overview


Sun Phocus Technologies is an Illinois LLC, formed in 2005 to commercialize its proprietary holographic planar concentrator (HPC) technology, called HoloSun™, for electricity-generating solar windows, skylights and curtain walls. Sun Phocus is the first and only company to use the patented HoloSun™ product in the building-integrated photovoltaics (BIPV) market.

Building-integrated photovoltaics (BIPV) are solar power-generating modules incorporated into the exterior surfaces of a building, serving a dual purpose as building material and electricity-generating device. By using HoloSun's transparent film to divert up to 30% of incident solar energy to solar cells, power output is maximized and solar cell area is minimized. The result is a much more aesthetically pleasing and less costly approach to solar glass. HoloSun™ is protected by two US patents.

BIPV products hold enormous promise, but few technologies have yet been able to gain traction in the market. While architects are very eager to incorporate BIPV into their projects, two major challenges are limiting widespread BIPV adoption: high cost relative to conventional building materials and PV systems, and poor architectural aesthetics. Existing concentrators are not able to address both of these concerns simultaneously since they use lenses and/or mirrors to concentrate light. Emerging translucent PV materials are similarly limited by aesthetics and efficiency. These drawbacks severely limit the use of these materials in BIPV façade applications where transparency and seamless integration with other building materials are major concerns.

Sun Phocus brings a dramatically different approach to solar concentration and BIPV implementation. Instead of lenses or mirrors, our product consists of a thin, transparent, and virtually weightless film. This makes our concentrator far more usable in truly building-integrated applications, where transparency is a key architectural requirement. Another distinct advantage of HoloSun™ is its compatibility with a nearly limitless variety of underlying PV configurations and module designs, thus enabling its use across a broad spectrum of products and building applications.