1
Stephen M Schultz, Thomas K Gaylord, Elias N Glytsis, Nile F Hartman: Diffractive grating coupler and method. Georgia Tech Research Corporation, Thomas Kayden Horstemeyer & Risley, September 4, 2001: US06285813 (124 worldwide citation)

The present invention entails a volume grating for use as an optical coupler and method for creating the same which comprises a predetermined surface grating pattern having a decreasing surface grating period along a waveguide light propagation direction in the volume grating with a plurality of sla ...


2
Nile F Hartman: Optical sensing apparatus and method. Georgia Tech Research Corporation, Martin M Novack, July 10, 1990: US04940328 (108 worldwide citation)

Optical devices and techniques are disclosed for sensing properties of an environment with improved stability and lower cost. In a disclosed embodiment, there is provided a substrate having an index of refraction n.sub.s. A waveguide layer is provided and has a surface adjacent the substrate, the wa ...


3
Anthony A Boiarski, Nile F Hartman, Rand C Sherman: Integrated optic system for monitoring blood pressure. Medex, Wood Herron & Evans, March 1, 1988: US04727730 (50 worldwide citation)

Blood gases and the like are monitored by a single probe having multiple dye wells and dyes immobilized in the wells, the dyes being exposed to the blood gases. Optical fibers and waveguides connected to the dye wells permit light to be directed from a light source to the dyes and the light due to a ...


4
Nile F Hartman: Heads-up display system with holographic dispersion correcting. Ford Motor Company, Paul K Godwin Jr, Clifford L Sadler, September 23, 1986: US04613200 (47 worldwide citation)

A simplified heads-up display system for projecting a virtual image of a broad-band display source employs a pair of identically constructed reflective holograms, wherein one of the holograms is in the field of view of the observer to correct dispersion and provide the virtual image of the display s ...


5
Nile F Hartman: Integrated optic interferometric sensor. Georgia Tech Research Corporation, Needle & Rosenberg P C, April 22, 1997: US05623561 (45 worldwide citation)

An improved integrated optic interferometric sensor uses a planar waveguide to offer detection sensitivity equal to the Mach-Zehnder interferometric sensor, while retaining the input coupling and manufacturing ease characteristic of a planar waveguide. Enhanced output signal processing capabilities ...


6
G Frederick Renner, Richard K Thatcher, William G Atterbury, Jeremy M Harris, Nile F Hartman, Robert B McCown: Indicating positions. Battelle Memorial Institute, Philip M Dunson, February 3, 1987: US04641027 (19 worldwide citation)

Typical apparatus as shown in FIGS. 1 and 12 for indicating the relative positions in a given direction between a reference point (24,59) and a test point (29,68) spaced therefrom and movable relative thereto is useful for measurement of the magnitude and direction of static or dynamic torque in a s ...


7
Nile F Hartman, James W Larsen, Carl M Verber: Modular surface inspection method and apparatus using optical fibers. Reynolds Metals Company, Alan T McDonald, November 17, 1992: US05164603 (14 worldwide citation)

An apparatus 10 for inspecting the surface of an object S moving in the direction of travel 23 relative to the apparatus comprises a modular sensing head assembly 11 including a plurality of sensing head modules 12, 13, each of which includes a number of sensing stations 16-21. Each sensing station ...


8
Robert E Schwerzel, Nile F Hartman: Integrated-optic spectrometer and method. Georgia Tech Research Corporation, Thomas Kayden Horstemeyer & Risley, May 1, 2001: US06226083 (12 worldwide citation)

An integrated-optic spectrometer is disclosed for analyzing the composition of light reflected off a sample under analysis. In a simplified embodiment, the spectrometer includes a buffer, located on the top of a substrate, which is etched to create a diffraction grating having grating lines. The dif ...


9
Terri Giversen, Mark Stratton, Nile F Hartman: Optical force sensor for high density planar electrical interconnects. Digital Equipment Corporation, Krishnendu Gupta, Ronald C Hudgens, Arthur W Fisher, May 2, 1995: US05410917 (9 worldwide citation)

The present invention is a method and an apparatus for the precise quantitative measurement of the magnitude of force exerted at the points of contact on a high density electrical interconnect that quantitatively determines the magnitude of the force. The invention includes the steps of establishing ...


10
Nile F Hartman: Transverse integrated optic interferometer. Alfred H Muratori, Wayne E Nacker, April 8, 2003: US06545759 (5 worldwide citation)

An interferometer for detecting a property of an environment includes a source of a beam of light and a first planar waveguide. The first planar waveguide has a first end, an opposite second end and a first interior surface. A first coupler is disposed adjacent the first end so as to be capable of c ...