Abstract:
A spectroscopic measuring apparatus with monitoring capability includes a first optical path that extends from a measuring object through an optical system and a slit of a slit-mirror block to a spectroscope main body and a second optical path that extends from the measuring object through the optical system and a mirror face of the slit-mirror block to a two-dimensional photographing unit. The slit and spectroscope main body are integrated into a spectroscopic unit.
Abstract:
An objective lens assembly suitable for use in helmet-mounted applications. The objective lens assembly comprises two prisms that collectively are configured, oriented and bonded relative to each other to separate and allow simultaneous imaging of two separate spectral bands (such as VNIR and LWIR bands) received from the same object scene via a common window such that the object scene may be viewed from the same perspective without the effects of parallax.
Abstract:
An instrument for measuring and analyzing surface plasmon resonance on a sensor surface has a polarized light source optically connected to the sensor surface by a plurality of optical elements, including in one embodiment an optical telescope that transfers light from a rotatable reflecting surface to the sensor surface. Selective positioning of a cylindrical lens into a first position within the path of light transforms collimated light to a rectangular wedge that is incident upon the sensor surface at numerous angles. In another embodiment, the light source is operated as a laser to excite fluorescence on the sensor surface and the fluorescence is selectively directed to a detector by appropriate optical elements positioned in specific configurations.
Abstract:
Embodiments of the invention are directed to integrated resonance detectors and arrays of integrated resonance detectors and to methods for making and using the integrated resonance detectors and arrays. Integrated resonance detectors comprise a substrate, a conducting mirror layer, an active layer, and a patterned conducting layer. Electromagnetic radiation is detected by transducing a specific resonance-induced field enhancement in the active layer to a detection current that is proportional to the incident irradiance.
Abstract:
This application describes designs, implementations, and techniques for controlling propagation mode or modes of light in a common optical path, which may include one or more waveguides, to sense a sample.
Abstract:
An optical analysis system for measuring compositions of a sample includes a light source radiating a first light. A modulator disposed in a ray path of the light modulates the light to a desired frequency. A spectral element filters the light for a spectral range of interest of the sample. An optical filter receives a first light beam split from the light reflecting from the sample and optically filters data carried by the first light beam into at least one orthogonal component of the first light beam. A first detector measures a property of the orthogonal component. A second detector receives a second light beam split from the light reflecting from the sample for comparison of the property of the orthogonal component to the second light beam. An accelerometer senses when to acquire data from the sample.
Abstract:
A device (100) for variable deflection of light is described, encompassing a micromechanical mirror arrangement (14) having a plurality of light-reflecting mirror actuators (18, 20, 22, 24, 26), and a control unit (32) with which the mirror actuators (18, 20, 22, 24, 26) are controllable into different reflection positions in order to vary the light deflection. The device (100) has a back-reflection structure (60), systematically adapted to the mirror arrangement (14), for reflecting back onto another portion of the mirror actuators (18, 20, 22, 24, 26), in targeted fashion, the light reflected onto the back-reflection structure (60) from one portion of the mirror actuators (18, 20, 22, 24, 26).
Abstract:
An apparatus is disclosed wherein laser radiation illuminates a sample using all reflective optics and wherein in-elastically scattered light from the sample is collected using the identical elements. The apparatus obviates the problem of contaminating the laser radiation with unwanted spectra from transmissive optics while providing very high rejection of the laser radiation with respect to the in-elastically scattered light. In addition, the apparatus can collect and launch light with high numerical aperture and large field of view.
Abstract:
The present disclosure provides for a system and method for assessing chronic exposure of a biological sample, such as a bodily fluid, to an analyte of interest. A biological sample may be illuminated to thereby generate a one or more pluralities of interacted photons. These interacted photons may be detected to thereby generate one or more spectroscopic data sets representative of a biological sample. Spectroscopic data sets generated may be compared to at least one reference data set. Each reference data set may be associated with a known exposure to a known analyte. The present disclosure contemplates that the system and method disclosed herein may be used to analyze exposure of biological samples to at least one analyte over time. Data sets may be obtained at various time intervals to assess changes in a molecular composition as a result of chronic exposure to an analyte.
Abstract:
Various systems and methods for performing optical analysis downhole with an interferogram (a light beam having frequency components with a time variation that identifies those frequency components. The interferogram is produced by introducing an interferometer into the light path, with the two arms of the interferometer having a propagation time difference that varies as a function of time. Before or after the interferometer, the light encounters a material to be analyzed, such as a fluid sample from the formation, a borehole fluid sample, a core sample, or a portion of the borehole wall. The spectral characteristics of the material are imprinted on the light beam and can be readily analyzed by processing electronics that perform a Fourier Transform to obtain the spectrum or that enable a comparison with one or more templates. An interferometer designed to perform well in the hostile environments downhole is expected to enable laboratory-quality measurements.