Interferometers TRIZ Cases

Segments speckle fields into multiple measurement points to compensate for phase decorrelation errors on tilted targets.

A fast displacement module rapidly varies the reference arm path length within an interferometer to enable high-speed axial eye measurements.

Fixed pattern noise corrects wavenumber mapping without additional interferometers, resolving temporal fluctuations.

A polarization-dependent delay element shapes reference light to maximize overlap with object reflections in optical coherence tomography.

Orthogonal polarization interferometry averages phase components to eliminate polarization-induced errors, ensuring accurate EUV lens figure determination.

Multiple cameras capture interference fringes while optical path adjustment shifts phases, reducing measurement errors from environmental disturbances.

A distance measurement technique utilizing coherent detection with finite coherence electromagnetic signals.

A polarization-maintaining light guide connects two spatially spaced interferometer parts in an optical coherence tomography assembly.

Split beam sets and retroreflectors detect linear and rotational movements, resolving the trade-off between measurement versatility and device complexity.

Two-color laser interferometry corrects air refractive index using a synthetic wavelength chain for precise long-range distance measurement.

A light path structure divides coherent light into multiple incident beams for simultaneous multi-point optical coherence tomography detection.

A line-field OCT system calculates a resampling curve to k-linearize interference data from a swept laser source.

An afocal system modifies measurement beam diameter to reduce shear, minimizing non-cyclic non-linear errors in displacement measurements.

Segmented optical beams produce interference patterns that reveal property relationships between target and reference samples.

A composite measurement system combines scalar and vector light fields to enhance nanometer displacement resolution.

A short coherence interferometer uses balanced detection and adaptive phasing to detect axially spaced specimen regions with high sensitivity.

An uncoated single mode fiber tip generates a spherical reference wave in a common path design that cancels systematic errors for sub-nanometer accuracy.

An ophthalmologic apparatus registers anterior eye segment OCT data using front image positional differences.

Frequency multiplexing segments scanning information into multiple channels to recover data at moderate bandwidth, reducing noise while maintaining speed.

Vectorizing the Jones matrix into an expanded coherence matrix enables rapid eigenvalue decomposition for polarization analysis.

Pre-stored calibration lookup tables correct nonlinear wavelength scanning to resolve the trade-off between signal collection efficiency and recalibration time.

A multi-spot holoscopy optical coherence tomography system decouples illumination and detection numerical apertures using a multi-hole diaphragm.

An optical image measurement device adjusts fiber end and detector alignment automatically.

An optical interference measuring apparatus adjusts reference light path length to differentiate normal and folded images.

A universal laser interferometer system measures multiple degrees of freedom geometric errors using a simplified optical path structure.

Resonant scanning mirror modulates optical path length to eliminate mechanical stage noise and polarization changes while maintaining depth resolution.

A Kalman filter merges continuous conventional sensor data with discontinuous atom optic measurements to correct drift and maintain navigation accuracy.

A low-coherence optical measurement device adjusts reference mirror position to maintain image frame alignment.

Frequency-domain analysis of interference signals captures eye geometry changes faster than jitter occurs, overcoming slow measurement speeds.

Rotating measurement beam trajectories between iterations achieves homogeneous point distribution in eye interferometry.

A controller adjusts the reference arm path length to maintain stability, reducing surface aberration impact on signal precision.

Dual laser interferometer uses frequency-modulated tunable light sources coupled into a Fabry-Pérot cavity to compute absolute distance.

A single snap-shot fringe projection system captures phase-shifted interferograms using a cycloidal diffraction waveplate and pixelated phase mask sensor.