Inventor

HILL HENRY A

US102 patents

⚠️ This page may combine multiple inventors who share the name “HILL HENRY A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HILL HENRY A

ZYGO CORP

Single-pass and multi-pass interferometery systems having a dynamic beam-steering assembly for measuring distance, angle, and dispersion

Interferometry system having a dynamic beam steering assembly for measuring angle and distance

Interferometry system having a dynamic beam steering assembly for measuring angle and distance

Passive zero shear interferometers

Interferometry system having a dynamic beam-steering assembly for measuring angle and distance and employing optical fibers for remote photoelectric detection

Systems and methods for quantifying nonlinearities in interferometry systems

Interferometer having a dynamic beam steering assembly

Systems and methods for quantifying nonlinearities in interferometry systems

Systems and methods for characterizing and correcting cyclic errors in distance measuring and dispersion interferometry

Multi-axis interferometers and methods and systems using multi-axis interferometers

Compensating for effects of variations in gas refractivity in interferometers

Interferometric cyclic error compensation

Multiple degree of freedom interferometer

Interferometer and method for measuring the refractive index and optical path length effects of air

Interferometer and method for measuring the refractive index and optical path length effects of air

Interferometer and method for measuring the refractive index and optical path length effects of air

Apparatus to transform two nonparallel propagating optical beam components into two orthogonally polarized beam components

Superheterodyne interferometer and method for compensating the refractive index of air using electronic frequency multiplication

Apparatus for reducing wavefront errors in output beams of acousto-optic devices

Dynamic interferometer controlling direction of input beam

Cyclic error compensation in interferometry systems

Interferometric stage system

Spatial filtering in interferometry

Cyclic error reduction in average interferometric position measurements

Spatial filtering in interferometry

Method and apparatus for compensation of time-varying optical properties of gas in interferometry

Multi-axis interferometer

Multiple-pass interferometry

Interferometry system and method employing an angular difference in propagation between orthogonally polarized input beam components

Multiple-pass interferometry

Interferometric servo control system for stage metrology

Single-pass and multi-pass interferometry systems having a dynamic beam-steering assembly for measuring distance, angle, and dispersion

Interferometer and method for measuring the refractive index and optical path length effects of air

Interferometer and method for measuring the refractive index and optical path length effects of air

Compensation of turbulent effects of gas in measurement paths of multi-axis interferometers

Cyclic error compensation in interferometry systems

Coating for reflective optical components

Stage alignment in lithography tools

Compensation for geometric effects of beam misalignments in plane mirror interferometers

ZETETIC INST

Multiple layer confocal interference microscopy using wavenumber domain reflectometry and background amplitude reduction and compensation

Multiple layer, multiple track optical disk access by confocal interference microscopy using wavenumber domain reflectometry and background amplitude reduction and compensation

Method and apparatus for confocal interference microscopy with background amplitude reduction and compensation

Differential interferometric scanning near-field confocal microscopy

Catoptric and catadioptric imaging systems

Multiple-source arrays with optical transmission enhanced by resonant cavities

Scanning interferometric near-field confocal microscopy with background amplitude reduction and compensation

Catoptric and catadioptric imaging systems

Control of position and orientation of sub-wavelength aperture array in near-field microscopy

Method and apparatus for discriminating in-focus images from out-of-focus light signals from background and foreground light sources

Apparatus and method for measurement and compensation of atmospheric turbulence effects in wavefront interferometry