Interferometers TRIZ Cases

A measurement system uses transmissive and reflective diffraction gratings to acquire in-plane distortion data.

A compact spatial phase shifting interferometer design reduces component count and size while maintaining a common optical path for signal and reference beams.

Self-calibrating redundant interferometers correct installation errors without auxiliary sensors, simplifying the calibration process.

A linear position sensor assembly uses a high permeability magnetic shield to enclose field sensors and minimize electromagnetic noise.

A Sagnac interferometer routes orthogonal polarization signals to a single detector for optical noise cancellation.

A wavelength-variable light source adjusts coherent length to separate interference fringes for precise shape computation.

Depolarizing means vary polarization state above scanning frequency to eliminate density stripes caused by fiber birefringence.

Diffraction grating filters multi-scattered signals to achieve tenfold depth increase in thick scattering media.

A normalization method adjusts retinal nerve fiber layer thickness measurements from off-centered time domain optical coherence tomography scans.

A galvanometer-based optical path adjustment unit switches light beams between anterior and posterior eye segment imaging modules.

Quadrature detection splits reference signals into phase-shifted components to generate evenly spaced triggers within each period.

A heterodyne fiber interferometer displacement measuring system uses a specially processed fiber ferrule and plano-convex lens to eliminate spot separation.

Merging branching and coherence portions into a single waveguide stabilizes measurement precision by eliminating manufacturing variances in branch ratios.

Galvanometer and wobble mirrors shift the beam along the path, resolving circular scanning inefficiencies that limit ambient detection.

Dynamic polarization switching enables simultaneous multi-depth imaging using one interferometer, eliminating the complexity and cost of multiple detectors.

An optical imaging apparatus uses frequency domain measurement to detect light scatter at multiple locations along a device under test.

A common path interferometer uses parallel optical branch paths and a three-way coupler to compute distance from detected light intensities.

Asymmetric detection aperture excludes reflected light to maintain focus accuracy on thin samples near reflective surfaces.

Entangled photon interference measures relative separations without prior knowledge, enabling femtosecond clock synchronization.

A single-chip optical coherence tomography engine integrates a digital Fourier-transform spectrometer with an optical phased array scanner.

A polarization control unit adjusts measuring beam orientation using reflected light to stabilize imaging systems.

Dual diffraction gratings cancel optical path length changes from surface tilt, enabling high-speed and stable height direction measurement.

Merging spatially separated beams via polarizing optics eliminates thermal drift and nonlinearity, ensuring high-precision displacement measurements.

Optical comb measures laser wavelengths to enable wide-range interferometric displacement measurement without expensive high-stability lasers.

Segmented pupil illumination resolves Height Process Dependency errors by combining multi-angle interference data to improve measurement reliability.

A wavelength-tunable light source determines output wavelengths via multiple drive parameters to enable continuous linear sweeping.

Extreme birefringence in the polarizing fiber maintains polarization stability despite movement, preventing signal degradation and image artifacts.

Segmenting illumination across spectral bands increases angular subtense and sensitivity while maintaining safe irradiance levels.