NSF

Substrate Guided Holographic Diffuser as Efficient Backlighting Solution for LCDs and LED Lighting Application (SGHD)

Luminit developed a novel Substrate-Guided Holographic Diffuser for liquid crystal display (LCD) backlights and for light-emitting diode (LED) lighting that will reduce the power consumption of backlit LCDs, while making them more affordable to consumers. In this project, Luminit is reducing the number of optical components in LCD backlights and making them more efficient and bright with the application of a thin one-component bright LCD backlight that has a controlled output angular distribution. The increased efficiency reduces the power consumption.

Tunable Electro-Optic Laser Scanner(TEOLS)

Luminit is developing a novel rapidly Tunable Electro-Optic Laser Scanner (TEOLS) device. TEOLS is based on unique liquid crystal microphased arraythat consists of a continuous array of transparent indium tin oxideelectrodes deposited on the microprisms, and a flat glass separator coated with electrode, sandwiched with the fast–switching (in micro-sec range) ferroelectric liquid crystal materials. Under an applied voltage, the parallel–aligned fast–switching analog FLC materials undergoes an electro-optic change, functioning as an electrically tunable liquid crystal microphased array with a linear phase ramp that varies with applied voltage. The phase ramp across the microarrays deflects (and thus scans) light; the angle of deflection depends on the voltage applied. The rapid Electro-Optic (EO) beam scanner deflects short pulses of the illuminating laser beam with ~0.5 mrad deflection angle consecutively to each of 2020 angular positions constituting the field of regard over 10 mrad of angular range for the NIST 3D Ladar imager. The reflected pulses from the background and targets are collected by the LADAR imager for each tile illuminated by the laser with an image composed of 2020 tiles. Target range is determined by measuring time of flight of each laser pulse to the target and back to the receiver.

Spectrally Pure Eye-Safe Laser (SPESL)

Luminit is developing SPESL, a method of reducing pollution during processing of fossil fuels, composed of an Er:YAG laser, side pumped by semiconductor lasers in the Er3+ absorption band near 1475 nm, with an intracavity etalon for both linewidth narrowing and tuning within a wavelength band, and with a switchable spectral filter to select the wavelength band itself.