CIRCADIAN PHASE ESTIMATION, MODELING AND CONTROL

Circadian rhythm is the biological process critical to the well-being of living organisms, from plants to insects and mammals. The circadian rhythms oscillate with a period of approximately 24 hours due to the 24-hour light-darkness pattern of the solar day. Some physiological processes, such as alertness regulation and hormone production, are related with circadian rhythm. Circadian disruption, as experienced by night shift workers, travelers across multiple time zones, submariners or miners, can lead to lower productivity, sleep disorder, and more serious health problems.

NARROW SPECTRAL LINE-WIDTH EMISSION PHOSPHORS WITH BROAD BAND EXCITATION EDGE UP TO AND INCLUDING THE BLUE WAVELENGTH REGION

Rensselaer researchers have developed a new class of phosphors that have narrow spectral linewidths suitable for high-efficiency, white light LED fabrication for lighting and display applications. These phosphors can be efficiently excited by near UV and blue LEDs such as in 400 nm LEDs and can provide emission in green, yellow, amber and red wavelengths. Commercial phosphor-converted white LEDs lack narrow-emitting red phosphors that are effectively excited by blue or near ultraviolet LEDs.

Sensory Lighting System and Method for Characterizing an Illumination Space

Rensselaer researchers have developed a smart, efficient, aesthetically pleasing, solid-state lighting system for homes and commercial spaces. Over 35% of the energy consumed by illumination can be saved by using advanced lighting control systems; however, these systems require frequent calibration and programming to adjust to interior redesign of the space and personal lighting needs. This technoloby involves LED fixtures that encode illumination with a time modulated data signal and incorporates a sparse network of low pixel light sensors distributed throughout the system.

LIGHT EMITTING DIODES AND A METHOD OF PACKAGING THE SAME

Rensselaer researchers have developed programmable directed mesoscopic self-assembly and energy-assisted placement processes suitable for high speed, high accuracy, and low-defect rate LED system packaging operations. Current LED packaging technology is handled one semiconductor device element at a time, and is limited to a speed of about 10K units per hour. New technology is needed to package these devices, as well as associated control devices, into integrated lighting systems at much higher speeds, up to 10K units per minute.

METHOD AND APPARATUS FOR AN ACOUSTIC-ELECTRIC CHANNEL MOUNTING

This technology overcomes several serious difficulties related to aligning and attaching transducers on opposite sides of a barrier like a submarine hull or the like, when the vessel is in a body of water, or other barriers where one or both sides of the barrier may be in a hostile environment, such as under high pressure, high temperature or nuclear conditions, or a liquid environment. This technology utilizes mounting members with threaded bolt holes at their periphery.

Flux-Switching Linear Permanent Magnet Machine with Yokeless Translator

Rensselaer researchers have designed a convenient and inexpensive linear permanent magnet machine solution for transportation, conveyance, and other applications. When designed for short-strokes, the machine is very robust and rugged, and exhibits excellent performance characteristics such as very high thrust density, low ripples, and normal forces. Traditionally, linear PM machines had the armature windings in the translator and the PMs in the stator or vice-versa. This novel design allows both the field and armature excitations in the same part of the machine.

Ultrasonic High Temperature and Pressure Housing for Piezoelectric-Acoustic Channels

This technology relates to ultrasonic transducer arrangement for transmitting and receiving ultrasonic data and power to and from a barrier. Many transducer designs suffer from uneven pressure between critical surfaces, which results in warped components and degraded performance. This technology provides a transducer design that avoids these issues and provides improved performance in high temperature andor high pressure environments.

Full Spectrum Solid State White Light Source, Method for Manufacturing and Applications

This technology relates to a full spectrum broad wavelength emission white light source fabricated using a graded composition optically clear substrate that enables high efficiency, high flux, narrow or wide spectral width, large area, low cost LEDs with peak emission wavelength in the range of visible wavelength range from 400-750 nm.