Licensing
An advanced sheet-form diffuser which provides a very broad angular spread and improves color mixing while preserving the optical transmittance of an optically clear material. The diffuser features a perpendicular grid of deep and narrow channels which reflect off-axis light with high efficiency using total internal reflection (TIR). It finds particular utility in LED luminaires and high-performance skylights.
High-visibility retroreflective sheeting that flashes in variable brightness in the light of the approaching vehicle. The sheeting features a lenticular lens texture that exposes alternating strips of retroreflective and non-retroreflective areas as the observation angle changes. It can be designed to display different areas with flashing, flip or animation effects and uses no electricity to operate. It is particularly suitable for road signs and safety marking where high night-time visibility is critical.
Planar-type light guides that concentrate and collimate light. The light guides employ lens arrays that shape the light beam according to a prescribed angular pattern. In illumination applications, the collimating light guides can be designed to redistribute light from a light source, such as an LED strip, and emit a uniform directional beam from the broad surface of the light guide. In light harvesting applications, the light guide can be designed to collect light from its broad-area surface and concentrate it on an edge or any prescribed location of the light guide. Such light guides are ideal for making flat illumination panels or backlights with enhanced brightness as well as efficient radiation collectors with ultra-thin form factors.
An advanced light coupling technology that allows for injecting light from stock high-brightness LEDs into film-thickness light guiding sheets. In turn, this allows for using the conventional, low-cost edge-lit technology for making large-area, flexible lighting panels without the high cost associated with OLEDs.
A new type of solar concentrator which uses an array of nested reflective rings to collect and focus sunlight on the rear of the collector with high optical efficiency. The nested ring design requires no secondary optics for its basic operation and ensures that all of the collected energy reaches the receiver with no wasted energy.
A new type of linear solar concentrator which employs an array of self-supporting slat reflectors instead of the continuous-surface parabolic mirror which normally requires an additional sophisticated support structure. The slat reflectors are arranged to focus the sunlight on the back of the collector and not in front of the mirror.