Luminus Devices, Inc.

Massachusetts Institute of Technology

Bank of America Corporation

Technion Research & Development Foundation Ltd

Chiyan Luo

Alexei A Erchak

Elefterios Lidorikis

Eleftrios Lidorikis

John Dimitris Joannopoulos

Steven G Johnson

Marin Soljacic

Yoel Fink

Mihai Ibanescu

Mordechai Segev

Yonathan Epelbaum

Michael Ebert

Peter J Williams

Vincent Ronsil

Edward Mok

Karen L Chang

Light-emitting devices, and related components, systems and methods are disclosed.

Large emission area light-emitting devices

A system includes a memory and a processor communicatively coupled to the memory. The memory stores a correlation index that is based at least in part on a portfolio of index options, a plurality of stock options, and a plurality of deltas computed using a plurality of constant flat implied volatilities. The processor determines a value of the correlation index by selecting a plurality of strike prices for each of the index and stock options, computing a constant flat implied volatility for an index and a plurality of stocks on a first date, and computing the plurality of deltas using the plurality of constant flat implied volatilities.

System for providing a correlation index

Light emitting devices

Light-emitting devices

Light-emitting devices, and related components, systems and methods are disclosed. In some embodiments, the light-emitting devices include a multi-layer stack of materials. The stack of materials includes a light-generating region and a first layer supported by the light-generating region. The surface of the first layer is configured so that light generated by the light-generating region can emerge from the light-emitting device via the surface of the first layer. The surface has a dielectric function that varies spatially according to a nonperiodic pattern.

Light-emitting devices including a nonperiodic pattern

A periodic electromagnetic medium is disclosed that includes a surface that provides an interface with an ambient medium and a periodic structure that provides negative refraction within the medium of an incident electromagnetic field incident on the surface. In various embodiments the incident electromagnetic field is within a range of frequencies, the medium may include dielectric or metallic material, and has either a positive or negative effective index.

Photonic crystal exhibiting negative refraction without requiring a negative effective index

Light-emitting devices, and related components, systems and methods are disclosed. In some embodiments, the devices (e.g., light-emitting diodes) comprise a multi-layer stack of materials including a light generating region and a first layer supported by the light generating region. The surface of the first layer may have a dielectric function that varies spatially according to a pattern. The pattern may be configured so that light that emerges from the device via the surface of the first layer is more collimated than a Lambertian distribution of light.

Light-emitting devices with high light collimation

Light-emitting devices, and related components, systems and methods are disclosed. The light-emitting device can include a multi-layer stack of materials including a light-generating region and a first layer supported by the light-generating region. A surface of the first layer can be configured so that light generated by the light-generating region can emerge from the light-emitting device via the surface of the first layer. The surface of the first layer can have a dielectric function that varies spatially according to a pattern that has an ideal lattice constant and a detuning parameter with a value greater than zero.

Light emitting device with patterned surfaces

Light emitting devices with improved extraction efficiency

Growing community of inventors

Woodside, NY, United States of America

Chiyan Luo