公开(公告)号：US11971300B1

公开(公告)日：2024-04-30

申请号：US17038864

申请日：2020-09-30

Applicant: United States of America as represented by the Administrator of NASA

Inventor： Shahid Aslam ,  Tilak Hewagama ,  Nicolas Gorius ,  Peter C. Chen ,  Theodor Kostiuk ,  John R. Kolasinski

IPC: G01J3/02 ,  B64G1/10 ,  B64G1/66 ,  G02B17/06 ,  G02B23/02

CPC classification number: G01J3/021 ,  B64G1/10 ,  B64G1/66 ,  G02B17/0615 ,  G02B23/02

Abstract: 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.

公开(公告)号：US10184839B1

公开(公告)日：2019-01-22

申请号：US15691109

申请日：2017-08-30

Applicant: The United States of America as represented by the Administrator of NASA

Inventor： Ari D. Brown ,  Emily M. Barrentine ,  Shahid Aslam

IPC: G01J5/20 ,  C23C14/08 ,  C23C14/58 ,  C23C14/34 ,  C23C14/00 ,  C23C14/16 ,  C23C14/35

Abstract: The present invention relates to uncooled microbolometers which can be integrated in future thermal instruments engaged in land imaging on future observatories. The present invention includes: (1) developing and characterizing a microstructured VOx thin film, and, (2) fabricating an uncooled microbolometer array over the 8-14 micron spectral band.

公开(公告)号：US11774355B1

公开(公告)日：2023-10-03

申请号：US17161814

申请日：2021-01-29

Applicant: United States of America as represented by the Administrator of NASA

Inventor： Shahid Aslam ,  Gerard Quilligan ,  Nicolas Gorius ,  Conor Nixon

IPC: G01N21/3504 ,  G08B21/14 ,  G01J3/42

CPC classification number: G01N21/3504 ,  G01J3/42 ,  G08B21/14 ,  G01J2003/421

Abstract: 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.

公开(公告)号：US11522552B1

公开(公告)日：2022-12-06

申请号：US17373989

申请日：2021-07-13

Applicant: United States of America as represented by the Administrator of NASA

Inventor： Gerard T. Quilligan ,  Shahid Aslam ,  Terry A. Hurford

IPC: H03M1/06

Abstract: An analog digital converter that does not require a dedicated reference voltage, can digitize a rail-rail input signal and provide house-keeping functions to a ROIC or other IC. The RHADR system may operate without support from a main electronics board, which would only have to supply a power supply voltage to, and read the outputs from, the chip. This is achieved with (1) a Pivoting Successive Approximation Register ADC (PSAR ADC) and (2) radiation hard by design (RHBD) techniques.

公开(公告)号：US11293809B1

公开(公告)日：2022-04-05

申请号：US16543208

申请日：2019-08-16

Applicant: UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA

Inventor： Gerard Quilligan ,  Shahid Aslam ,  Nicolas Gorius ,  Daniel Glavin ,  John Kolasinski ,  Dat Tran

IPC: G01K7/02 ,  H03F3/45 ,  H03F3/68 ,  H03M1/08

Abstract: An apparatus include one or more DACs and a resistor divider are configured to generate a variable bias voltage VBIAS with respect to a CM voltage VCM. The CM voltage VCM is 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.

公开(公告)号：US10746594B1

公开(公告)日：2020-08-18

申请号：US16532062

申请日：2019-08-05

Applicant: UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA

Inventor： Gerard Quilligan ,  Shahid Aslam ,  Nicolas Gorius ,  Daniel Glavin ,  John Kolasinski ,  Dat Tran

IPC: G01J1/42 ,  G01J5/12 ,  G01K7/02 ,  G01J1/30 ,  H03M1/18 ,  G01J1/20 ,  G01J1/16

Abstract: An apparatus include one or more DACs and a resistor divider are configured to generate a variable bias voltage VBIAS with respect to a CM voltage VCM. The CM voltage VCM is 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.