Two off-axis concave spherical mirrors cancel total off-axis astigmatism across 190 nm to 5.5 microns, enabling precise infrared measurements.
K-means clustering and L1 norm algorithms separate overlapping interference signals in the frequency domain to improve depth profile resolution.
A portable detection device uses a mobile electronic device to analyze spectral data from plasma generated by a sample.
Replacing expensive multi-channel-plate detectors with solid-state sensors reduces system noise and cost while maintaining nanosecond precision.
A processor controls a light source device to emit low-intensity illumination in a specific wavelength band matching ambient conditions.
Photonic time-stretch system encodes unique spectral patterns onto laser pulses for ultrafast image reconstruction.
Nonlinear converter transforms optical signals into spectral data for rapid identification using sparse principal component analysis.
Hybrid calibration method corrects linear array sensor responses using dark and light measurements, maintaining accuracy without full-length strips.
A dual-channel VUV reflectometer uses a stable silicon reference above 250 nm to calibrate measurements below that threshold.
Fourier transform analysis of optical signals determines etching endpoints without specific element requirements.
Penalized Reference Matching with Stimulated Raman Scattering detects lipid subtypes via spectral similarity quantification.
Optimizes neural network training for library-based critical dimension metrology using principal component analysis and dynamic neuron adjustment.
A compact spectrometer uses an absorption element with a varying chemical composition to map radiation wavelengths spatially.
Pre-calibration compensates for temperature drift and component wear in organic photodiode spectroscopic devices.
Nano-optic filter arrays compensate for resolution loss from reduced slit-detector distance, enabling accurate health monitoring.
Alternating scan directions correct direction-dependent errors, improving measurement precision and data reliability.
Silicon carbide flame detectors identify premixed and diffusion flames using distinct ultraviolet and thermal emission signatures.
Spatial channel segmentation enables simultaneous multispectral imaging without sequential filter movement, resolving measurement speed bottlenecks.
A cloud-based circadian health system estimates spectral data for mobile devices lacking sensors.
A dielectric multilayer coating reflects excitation light and transmits fluorescence signals through a substrate.
Parallel readout of avalanche photodiode arrays reduces dead time and noise, enabling high-speed single-photon detection without sacrificing signal quality.
Integrated computational element core compensates for lens aberrations and systematic throughput errors, maintaining prediction accuracy without re-calibration.
Multi-layer filter segments visible light bands to resolve the trade-off between measurement precision and device complexity.
Surface mapping technology creates digital models of bulk material storage containers to determine load locations and volumes.
A nonlinear calibration function estimates light beam intensity in the measurement spectral band, reducing uncertainty from reference beam estimation errors.
A compact spectrometer system integrates a processing device with a remote server to analyze spectral data from consumer appliances.
Dual-band thermal imaging system captures spectral data to reconstruct fused images, resolving labor-intensive inspection bottlenecks.
A spectral filter integrates reflective layers and cavities on a semiconductor chip to reduce device size.
Binning spectral measurements into discrete intervals resolves the contradiction between limited training data volume and prediction accuracy.
Laser induced breakdown spectroscopy removes surface contaminants from thermal barrier coatings for subsequent stress measurement.
A freeform concave grating imaging spectrometer design utilizes a single optical element with variable line spacing to enhance spectral dispersion and resolving power.
A spectral estimation system generates image signatures by calculating detection and residual components from spectral data.
A method determines custom spectral power distributions by optimizing evaluation functions against specific constraints.
A filter array uses asymmetric reflective layers to stabilize transmission spectra across varying light incidence angles.
An image processing apparatus estimates spectral transmittance using an estimation operator to analyze noise effects in the wavelength axis.
Computing a conversion matrix from spectral data simulates various light sources, eliminating hardware complexity while enhancing diagnostic accuracy.
Metasurface structures route spectral bands to dedicated conversion elements, preserving light energy lost in traditional Bayer filtering.
A quasi-deterministic single-photon source reshapes broadband pulses via heralded frequency conversion to generate output photons with deterministic frequencies.
A photodiode array detector sets different charge accumulation times for light receiving elements within each unit to optimize signal detection.
Tilting the adjustable multi-passband filter resolves complexity trade-offs in hyperspectral imaging systems.
Iterative spectrum combination of separated natural and white hair reflectance data resolves measurement precision issues in mixed hair samples.
A movable pixelated filter array shifts into the optical path to enable spectral filtering or high transmittance modes.
A hyperspectral imaging system captures spatial and spectral data across a broad wavelength range to measure semiconductor wafers.
Tilted mirrors eliminate central obscuration while beam splitters route spectral bands through modular relay optics to correct aberrations.
A lens meter displays dynamic guide marks to direct user adjustments during optical measurement.
Segmented calibration elements simulate specific skin characteristics to associate illumination intensities with blood material concentrations.
Aliased arrayed waveguide grating filters resolve wavelength discrimination across continuous ranges, eliminating the need for discrete sine filters.
Replacing expensive modulation analyzers, this method uses spectral power mapping to measure I/Q skew accurately for complex formats.
A liquid crystal cell uses electrodes as Joule heaters to regulate material temperature through applied current.