United States of America as Represented by the Administrator of Nasa

Nicolas Gorius

Shahid Aslam

Gerard T Quilligan

John R Kolasinski

Daniel P Glavin

Dat Tran

Peter Chen

Perry A Gerakines

Conor Nixon

Theodor Kostiuk

Tilak Hewagama

Todd C Purser

The present invention relates to a compact, lightweight, cost-efficient ultraviolet-visible-far infrared (UV-VIS-IR) telescope system, covering the 300 nm to 2500 nm (0.3 μm to 2.5 μm) spectral range, based on a fast focal-ratio, reflective optics design, and an optical coupling interface appropriate for COTS spectrometers, commensurate with about 1U-2U CubeSat payload volume.

Carbon nano-tube polymer composite mirrors for CubeSat telescope

A methane alert station for detecting methane gas in an environment. The methane alert station comprises a casing, at least one window opening formed in the casing, a infrared transmitting window disposed in the at least one window opening, an infrared light source disposed adjacent to the infrared transmitting window, a hyperbolic mirror disposed in the casing coaxially with a central axis, a Winston cone disposed coaxially with the central axis and spaced from the hyperbolic mirror along the central axis, and a filter-detector arranged coaxially with the central axis and so that the Winston cone is disposed between the hyperbolic mirror and the filter-detector. The infrared light source is configured to emit an outgoing infrared light from the casing. The filter-detector is configured to measure a methane gas concentration in the environment by measuring an absorption of infrared radiation of the methane gas at specific wavelength bandwidths.

System, apparatus and methods for detecting methane leak

An apparatus for measuring vapor partial pressures of water and carbon dioxide includes a pair of infrared (IR) sources and a pair of quad filter detectors are placed opposite to one another such that the vapor partial pressures of water (HO) and carbon dioxide (CO) is measured and quantified in a short pathlength gas cell.

Compact non-dispersive infrared gas analyzer

An apparatus include one or more DACs and a resistor divider are configured to generate a variable bias voltage Vwith respect to a CM voltage V. The CM voltage Vis applied to a cathode of one or more thermopiles or a negative input of one or more amplifiers to prevent saturation and over range of one or more low voltage readout amplifiers and one or more ADCs.

Thermopile bias method for low voltage infrared readout integrated circuits

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Washington, DC, United States of America

Nicolas Gorius