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Topsfield, MA, United States

Grant
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase II | Award Amount: 750.00K | Year: 2015

ABSTRACT:OPTRA is proposing to design, build and test a dual-band infrared scene projector based on digital micromirror device (DMD) technology. DMDs are an ideal spatial modulator for scene projection applications that require high frame rates and fast radiance rise/fall times. DMDs offer further advantages of applicability in the spectral regions from ultraviolet through mid-wave infrared, and are commercially available off-the-shelf items. During the Phase I effort, OPTRA developed an innovative means of using DMDs to generate flickerless grayscale images thereby effectively addressing a common criticism of this scene projection technology. Provisional specifications call for operation in the 3-5m spectral region with future extension into the visible region. The OPTRA scene projector will use innovative OPTRA techniques to eliminate the temporal intensity modulation associated with PWM. The Phase II prototype will offer >6-bits grayscale resolution, 22kHz frame rates, 300W/(cm2sr) pupil radiance and radiance rise and fall times on the order of several microseconds. The scene projector proposed herein will generate dynamic accurate simulations of operational scenes relevant to the testing of a wide array of sensors, with potential extension into next generation sensor test technology.BENEFIT:The scene projector proposed herein will be able to generate dynamic accurate simulations of operational scenes relevant to the testing of a wide array of sensors currently under development, with potential extension into next generation sensor test technology.


Grant
Agency: Department of Homeland Security | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 754.78K | Year: 2015

The widespread use and deployment of laser systems in the public domain has led to the need for laser exposure measurement systems that operate over wide spectral range and provide sufficient dynamic range to measure exposure relative to maximum permissible exposure (MPE) limits and establish normal hazard zones (NHZ). OPTRA, Inc. proposes a solution based on multiple detector arrays, custom CMOS readout integrated circuitry and diffractive optics to directly measure the laser characteristics and evaluate the exposure with respect to MPE limits established by the ANSI Z136.1 standard and determine NHZ.. In the Phase II R&D effort, OPTRA, Inc. will design, develop, build and test a UV through LWIR laser NHZ measurement system.


Grant
Agency: Department of Homeland Security | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 99.85K | Year: 2014

The widespread use and deployment of laser systems has led to the need for laser exposure measurement systems that operate over wide spectral range and provide sufficient dynamic range to measure exposure relative to maximum permissible exposure (MPE) limits and establish normal hazard zones. OPTRA, Inc. proposes a solution based on the complementary combination of CMOS readout integrated circuitry and diffractive optics to directly measure the laser characteristics and evaluate the exposure with respect to MPE limits established by the ANSI Z136.1 standard. In the Phase I R&D effort, OPTRA, Inc. will develop optical and electronics models, perform tradeoff analyses, predict system performance, and perform a laboratory demonstration to establish the feasibility of the proposed approach to meet the DHS requirements.


Grant
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 124.82K | Year: 2015

NASA is interested characterizing the atmospheric concentration of greenhouse gases critical to global warming phenomena, and their fluxes over time. For this reason, NASA has invested in the Total Carbon Column Observing Network (TCCON), which comprises sun trackers with high resolution Fourier Transform Spectrometers. NASA is currently looking to expand their observation network in order to provide more data for their atmospheric research, but this will require a reduction in spectrometer size and cost. OPTRA proposes to address this need through the development of a novel hybrid spectrometer design that leverages the strengths of Michelson and lamellar grating interferometers, while mitigating their individual weaknesses. The end result will be a compact, rugged, low cost spectrometer capable of the same performance as the current TCCON network. This technology will further be extendable to any applications where spectral data is required, but instrument size and cost are at a premium. Examples include methane pipeline monitoring, volcano emission characterization or UAV-based remote sensing.


Grant
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 748.97K | Year: 2014

OPTRA proposes the development of a modular, reconfigurable matched spectral filter (RMSF) spectrometer for the monitoring of greenhouse and volcanic gases. The heart of this spectrometer will be an RMSF core, which can be paired with different fore-optics or detector modules to achieve active point or passive standoff detection of the chemicals of interest. The RMSF core is comprised of a dispersive spectrometer that images the sample spectrum from 3 – 5.5 micron onto a digital micro-mirror device (DMD) such that different columns correspond to different wavebands. By applying masks to this DMD, a matched spectral filter can be applied in hardware. This results in a highly flexible system that can address a wide variety of chemicals by simply updating the DMD masks applied and a wide variety of applications through modular hardware design. Use of the DMD and a single element detector in place of a conventional FPA results in significantly reduced cost and improved performance in terms of image uniformity, pixel operability, and dynamic range. The proposed Phase II effort will produce a prototype RMSF core with one set of fore-optic and detector modules for each of the two detection modalities.

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