Abstract:
A spectrophotometer optics system is provided. The spectrophotometer optics system includes an optical sensing array and an optical waveguide including an input side and an output side. The input side of the optical waveguide receives input light and the optical sensing array is located at the output side of optical waveguide. The optical waveguide is configured to carry light to be analyzed by total internal reflection to the output side of the optical waveguide and to direct the light to be analyzed toward the optical sensing array. The spectrophotometer optics system includes an optical dispersive element configured to separate the light to be analyzed into separate wavelength components, and the optical dispersive element is supported by the optical waveguide.
Abstract:
Spectroscopy apparatuses oriented to the critical angle of the sample are described that detecting the spectral characteristics of a sample wherein the apparatus consists of an electromagnetic radiation source adapted to excite a sample with electromagnetic radiation introduced to the sample at a location at an angle of incidence at or near a critical angle of the sample; a transmitting crystal in communication with the electromagnetic radiation source and the sample, the transmitting crystal having a high refractive index adapted to reflect the electromagnetic radiation internally; a reflector adapted to introduce the electromagnetic radiation to the sample at or near an angle of incidence near the critical angle between the transmitting crystal and sample; and a detector for detecting the electromagnetic radiation from the sample. Also, provided herein are methods, systems, and kits incorporating the peri-critical reflection spectroscopy apparatus.
Abstract:
A light meter (200) for detecting two or more different wavelengths of light and methods for determining whether a light source configured to emit light at two or more dominant wavelengths is working properly. The inventive light meter (200) includes a housing (201), two or more receiving means (202, 204), for example, LEDs for receiving light energy emitted by an external light source wherein each receiving LED (202, 204) is configured to receive light energy of a desired wavelength, and display means, for example LED bar displays (206) for providing a visual indication of the existence and intensity of one or more wavelengths of light energy received by the receiving means.
Abstract:
The present invention relates to a semiconductor processing system that employs infrared-based thermopile detector for process control, by analyzing a material of interest, based on absorption of infrared light at a characteristic wavelength by such material. Specifically, an infrared light beam is transmitted through a linear transmission path from an infrared light source through a sampling region containing material of interest into the thermopile detector. The linear transmission path reduces the risk of signal loss during transmission of the infrared light. The transmission path of the infrared light may comprise a highly smooth and reflective inner surface for minimizing such signal loss during transmission.
Abstract:
The present invention relates to a semiconductor processing system that employs infrared-based thermopile detector for process control, by analyzing a material of interest, based on absorption of infrared light at a characteristic wavelength by such material. Specifically, an infrared light beam is transmitted through a linear transmission path from an infrared light source through a sampling region containing material of interest into the thermopile detector. The linear transmission path reduces the risk of signal loss during transmission of the infrared light. The transmission path of the infrared light may comprise a highly smooth and reflective inner surface for minimizing such signal loss during transmission.
Abstract:
A spectrally tunable optical detector and methods of manufacture therefore are provided. In one illustrative embodiment, the tunable optical detector includes a tunable bandpass filter, a detector and readout electronics, each supported by a different substrate. The substrates are secured relative to one another to form the spectrally tunable optical detector.
Abstract:
The invention relates to a sensor for determining a substance concentration based on optical absorption or emission characteristics. Said sensor comprises a light source (1), a measuring chamber (3) for the medium to be determined, a filter device (5) and a measuring cell device (7). Light transmitted through the medium to be determined is filtered through the filter device (5) and analyzed in the measuring device (7).The filter device consists of a checkered matrix comprising band pass filters having two different transmission wavelengths. The temperature difference between neighbouring measuring cells is determined directly using thermocouples located in the measuring cell device (7). The thermovoltage generated thereby correlates with the substance concentration to be measured.