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Briefs: Photonics/Optics
Curved-focal-plane arrays of back-illuminated silicon-based photodetectors are being developed. The basic idea is to improve the performance of an imaging instrument...
Briefs: Photonics/Optics
ICCD Camera Enables PLIF Technique for Fuel Visualization in Engines
Large-bore, slow-speed, natural gas two-stoke cycle engines used for power generation and gas compression on natural gas pipelines suffer from poor in-cylinder mixing processes caused by ineffective fuel delivery, which can increase emissions and create low engine efficiency...
Briefs: Photonics/Optics
Briefs: Photonics/Optics
Because the hardware interfaces of IR cameras change frequently, this infrared (IR) camera software suite (RTools™) consists of a set of stand-alone, executable modules...
Briefs: Photonics/Optics
Scanning tunneling optical resonance microscopy (STORM) is a method, now undergoing development, for measuring optoelectronic properties of materials and devices on the nanoscale by means of a...
Briefs: Photonics/Optics
The Micro-Arcsecond Metrology (MAM) testbed is a ground-based system of optical and electronic equipment for testing components, systems, and engineering concepts for the Space Interferometer Mission (SIM)...
Articles: Photonics/Optics
No single image sensor will ever satisfy the diverse requirements of all industrial camera applications. The characteristics of higher resolution, faster speed, and a wide dynamic range are, however, increasingly...
Briefs: Photonics/Optics
Six Classes of Diffraction-Based Optoelectronic Instruments
Six classes of diffraction-based optoelectronic instruments have been invented as means for wavelength-based processing of light. One family of anticipated applications lies in scientific instrumentation for studying chemical and physical reactions that affect and/or are affected...
Briefs: Photonics/Optics
PC-based machine vision systems are becoming more powerful as the individual components that comprise them increase in performance. This has allowed for more complex algorithms to be developed...
Briefs: Photonics/Optics
An improved version of an optoelectronic apparatus for measuring distances of the order of tens of feet with an error no larger than a small fraction of an inch (a few millimeters) has...
Briefs: Photonics/Optics
The ability to detect the temperature differences of objects is vitally important to firefighters, who must often open doors that lead to fires and identify the seat and extension...
Briefs: Photonics/Optics
An optical heterodyne interferometer that can be used to measure linear displacements with an error -20 pm has been developed. The remarkable accuracy of this interferometer is achieved...
Briefs: Photonics/Optics
Multi-scale retinex with color restoration (MSRCR) is a method of processing digital image data based on Edwin Land's retinex (retina + cortex) theory of human color vision. An...
Briefs: Photonics/Optics
An instrumentation system that would include an ultraviolet (UV) laser or light-emitting diode, an infrared (IR) laser, and the equivalent of an IR Raman spectrometer has been proposed to...
Briefs: Photonics/Optics
Focal-plane arrays of quantum-well infrared photodetectors (QWIPs) equipped with both light-coupling diffraction gratings and metal side reflectors have been proposed, and prototypes are...
Briefs: Photonics/Optics
Metallized Capillaries as Probes for Raman Spectroscopy
A class of miniature probes has been proposed to supplant the fiber-optic probes used heretofore in some Raman and fluorescence spectroscopic systems. A probe according to the proposal would include a capillary tube coated with metal on its inside to make it reflective. A microlens would be...
Briefs: Photonics/Optics
Next-generation thermal load sensors, or combo sensors, optimize climate control and lighting in "intelligent automobiles," thereby enhancing the comfort and safety of drivers and passengers....
Briefs: Photonics/Optics
According to a proposal, basic x-ray lithography would be extended to incorporate a technique, called "inverse tomography," that would enable the fabrication of microscopic...
Briefs: Photonics/Optics
Learning algorithms for machine vision are essential for many of the applications that require inspection and guidance. These algorithms typically require some type of learning...
Briefs: Photonics/Optics
Photovoltaic arrays of the rainbow type, equipped with light-concentrator and spectral-beam-splitter optics, have been investigated in a continuing effort to develop lightweight, high-efficiency solar...
Briefs: Photonics/Optics
A method for correcting the aim of a beam-waveguide microwave antenna compensates for the beam aberration that occurs during radio tracking of a target that has a component of velocity...
Briefs: Photonics/Optics
Curved mirrors of a proposed type would comprise lightweight sheets or films containing integral, biologically inspired actuators for controlling their surface figures. These mirrors could...
Briefs: Photonics/Optics
Deformable mirrors of a proposed type would be equipped with relatively-large-stroke microscopic piezoelectric actuators that would be used to maintain their reflective surfaces in precise shapes....
Briefs: Photonics/Optics
A class of lightweight, deployable, thin-shell, curved mirrors with built-in precise-shape-control actuators is being developed for high-resolution scientific imaging. This technology incorporates a...
Briefs: Photonics/Optics
Planar two-dimensional arrays of thermopiles intended for use as thermal-imaging detectors are to be fabricated by a process that includes surface micromachining. These thermopile arrays are...
Articles: Photonics/Optics
Many imaging applications in the near-infrared (NIR) region of the spectrum require sensors that see beyond the traditional charge-coupled device (CCD) sensor’s spectral range. A standard uncoated CCD detector...
Briefs: Photonics/Optics
Custom Software for Infrared Camera Image Acquisition and Control
Infrared cameras based on hybrid focal-plane array sensors are unlike consumer video products such as camcorders. They are complicated imaging devices that output very large amounts of digital image data at high speeds, require multiple levels of camera control, and produce imagery...
Briefs: Photonics/Optics
Brushlike arrays of carbon nanotubes embedded in microstrip waveguides provide highly efficient (high-Q) mechanical resonators that will enable ultra-miniature radio-frequency (RF)...
Briefs: Photonics/Optics
Optical-Quality Thin Polymer Membranes
A method of fabricating both curved and flat thin polymer membranes of optical quality has been developed. The method was originally intended to enable the fabrication of lightweight membrane imaging and interferometric optics, possibly with apertures multiple meters wide, for use in scientific instruments...
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