Interferometers TRIZ Cases

See how integrating a laser diode into a TEC-stabilized cell with collimation optics reduces tr

See how a thermo-electrically stabilized laser diode cell integrates collimation, isolation, an

A non-reciprocal transmission structure preserves forward-wave phase while randomizing backward waves to improve interferometer asymmetry.

Forward waves keep phase coherence while reverse waves are randomized and absorbed using circulators, phase shifting, and thermal radiation.

An adjustable interferometric path regulator keeps path length difference constant for precise laser focus distance measurement.

An adjustable optical path regulator keeps interferometer distance measurement stable for precise laser focus despite surface and scan variations.

Beam position feedback and measurement-light angle correction keep processing and sensing beams aligned for accurate keyhole depth measurement.

An adjustable optical path regulator keeps interferometer path difference stable for accurate on-axis laser focus distance measurement.

Adjustable measurement-light alignment corrects chromatic aberration, enabling precise optical interference measurement of laser keyhole depth.

Switching the measurement beam between the keyhole and weld bead detects overlap gaps, corrects penetration depth, and helps prevent melt-through.

Adjustable interferometer path length compensates real-time work-distance variation to keep laser focus accurate and material quality consistent.

By comparing keyhole and weld bead depth with a separate measurement beam, this case detects plate gaps and prevents melt-through during overlap welding.

Independent deflection of a measuring beam and machining beam enables direction-independent seam tracking with about 1 μm positioning accuracy.

Independent deflection optics and coaxial beam coupling enable direction-independent seam tracking with about 1 μm positioning accuracy.

Subtracting and dividing time-separated OCT signals removes interference, enabling accurate vapor capillary depth measurement during beam machining.

A polarization-sensitive lens creates a single-path scanning holography setup that improves stability while reducing twin-image noise and optical complexity.

A polarization-selective lens splits self-mixing interferometric channels to measure two locations while keeping sensor footprint small.

Serial optical imaging modules and segmented reference paths switch imaging fields of view without shifting imaging depth position.

Chromatic splitting creates a non-target comb for internal phase compensation, preserving distance accuracy without temperature stabilization.

Two interferograms and deep learning enable compact on-machine measurement of surface shape and roughness with less complexity and disturbance sensitivity.

Polarized light split by partial apertures enables compact 3D distance measurement on common cameras without dedicated illumination.

Tilting and translating one deflection element adjusts beam incidence for different CGHs, enabling compact shape measurement without custom prisms.

By placing the interferometer near the pupil plane, shear can be adjusted while fringe frequency stays stable for different surface variations.

Optical fiber Fabry-Perot sensing measures mold gap in high-temperature casting and detects flux crystallite formation to improve quality and breakout warning.

Dual-wavelength coherent interferometry enables rapid absolute distance measurement with millimeter-scale precision and fewer LiDAR artifacts.

Periodic current-driven wavelength modulation replaces probe head motion in fiber-optic interferometry for compact, high-resolution distance sensing.

Integrated waveguides, multiplexers, and detectors on a photonic chip enable precise distance sensing with wide angular range in low-weight systems.

Overlapping OCT scan ranges with an optical frequency comb extends continuous surface profiling when distance changes exceed the usual depth range.

Varying the reference-light frequency during OCT scanning reduces B-scan tilt and complex conjugate artifact overlap for clearer anatomical data.

A broadband source and 3 x 3 interferometer improve fiber length measurement noise and enable multiplexed reflector sensing without multiple lasers.

Symmetric ferrule emitter placement compensates etalon tilt path differences, improving LIDAR velocity measurement accuracy.

Polarization-based single-shot phase shifting and an offset reference mirror enable fast 3D microscopy with less alignment effort and vibration sensitivity.

Near-common-path beam separation stabilizes interferometric phase imaging by reducing environmental disturbance and improving 3D topography measurement.

A geometric-phase optical mask generates multiple phase-shifted patterns in one camera shot, reducing vibration sensitivity and camera complexity.

An optical waveguide and dual-detector path reduces light-spot separation and environmental disturbance while enabling nanometer-level displacement resolution.