Class / Patent application number | Description | Number of patent applications / Date published |
356455000 | Having a rotating, pendulous, or wedge scanning element | 7 |
20100265512 | OPTO-MECHANICAL OPTICAL PATH RETARDATION MULTIPLIER FOR OPTICAL MEMS APPLICATIONS - An optical Micro Electro-Mechanical System (MEMS) device provides an optical path retardation multiplier. The MEMS device includes a moveable corner cube reflector, a fixed minor and a MEMS actuator. The moveable corner cube reflector is optically coupled to receive an incident beam and reflect the incident beam through 180 degrees towards the fixed mirror. The fixed minor is optically coupled to reflect a reflected beam back towards the moveable corner cube reflector along a reverse path of the incident beam. The MEMS actuator is coupled to the moveable corner cube reflector to cause a displacement of the moveable corner cube reflector to extend an optical path length of the reflected beam. | 10-21-2010 |
20110032531 | Static interferometry system and method - The invention pertains to a static interferometry system comprising two mirrors produced respectively by vertical assemblage (EH) and horizontal assemblage (EV) of a set of parallel plates of constant width, shifted along the optical axis so as to form stairs of variable optical path difference, the said two staircase mirrors (EH, EV) being disposed orthogonally so as to form, by optical superposition, a set of square facets engendering different optical path differences for the incident signal, and a detection device (DET) for detecting the set of optical path differences of the resulting interferogram. The system comprises, furthermore, means of continuous variation (LC) of the optical path difference during the acquisition of data by the detection device (DET), and sampling means (S, ACQL) for sampling the continuous optical path difference acquired while complying with the Nyquist criterion. | 02-10-2011 |
20110157595 | Rotary Interferometer - An angular displacement of an object is measured interferometrically by splitting a laser beam into a reference beam and a measuring beam. The reference beam is directed at a stationary reference retroreflector and then a phase shift detector. The measuring beam is directed at a rotatable reflective surface of the object and then a stationary measuring retroreflector and then back to the rotatable reflective surface and then to the phase shift detector such that the phase shift detector measures an angular displacement of the rotatable reflective surface when the length of the path of the measuring beam changes when the rotatable reflective surface is displaced. | 06-30-2011 |
20120120405 | Interferometer Velocity Control of Beamsplitter and Moving Mirrors - A novel means of provided velocity control of an interferometer wherein one of the moving components includes the beamsplitter element is introduced herein. Using a moving beamsplitter and coupled flexure mounting allows improved velocity control because the low mass of the beamsplitter enables the systems disclosed herein to respond faster than conventional mirror velocity controlled interferometer instruments with a resultant lower velocity error so as to provide a more stable and lower noise spectra from the analytical instrument. The control of the velocity of the beamsplitter and if desired, one or both of the configured mirrors, reduces the time wasted changing velocity at the ends of each scan. The result is an increase in data collection available in any given experiment time frame. Such desirable arrangements of the present invention thus allow scans to be collected at higher rates, which beneficially increase the ability to monitor rapidly changing systems. | 05-17-2012 |
20130120754 | MICRO-SPECTRAL SENSOR - Micro-spectral sensors and methods are presented in which a Fizeau wedge interference filter is disposed between a focal plane array and a visible scene with an increasing wedge filter dimension varying along a scan direction, where the scene is scanned along the FPA to obtain light intensity measurements of a given scene location at different times using different FPA sensor elements through different wedge filter thicknesses, and the measurements correlated to the given scene location are Fourier transform to generate spectral data for the location. | 05-16-2013 |
20130120755 | Recording a spectrally resolved image by reading out several partial arrays in a plurality of interferometer scans - A method for the acquisition (AU) of a spectrally resolved, two-dimensional image by means of Fourier transform (=FT) spectroscopy or Fourier transform infrared (=FTIR) spectroscopy, is characterized in that, during multiple passes (D | 05-16-2013 |
20150103354 | MULTIPLEX TUNABLE FILTER SPECTROMETER - The invention provides spectroscopic systems and spectrometers employing an optical interference filter module having a plurality of bandpass regions. In certain embodiments, the systems include a mechanism for wavelength tuning/scanning and wavelength band decoding based on an angular motion of one or more filters. A spectral processing algorithm separates the multiplexed wavelength-scanned bandpass regions and quantifies the concentrations of the analyzed chemical and/or biological species. The spectroscopic system allows for compact, multi-compound analysis, employing a single-element detector for maximum performance-to-cost ratio. The spectroscopic system also allows for high-sensitivity measurement and robust interference compensation. | 04-16-2015 |