Methods, systems and processes for providing efficient, accurate and exact image reconstruction using portable and easy to use C-arm scanning devices and rotating gantries, and the like. The invention can provide exact convolution-based filtered back projection (FBP) image reconstruction by combining a curved scan of the object and a line scan of the object. The curved scan can be done before or after the line scan. The curved scan can be less than or greater than a full circle about an object b...

Apparatus, methods system and devices for using alternated duty cycle control to achieve soft-switching for at least one switch of the two half-bridge switches. When soft-switching can be only achieved for one switch, alternated duty cycle control alternates the soft-switching between the two switches so that each switch is soft-switched during half of the time and hard-switched during the other half, keeping equal power losses distribution between the switches. When alternated duty cycle contro...

Closed air space devices and methods of use for full body bio hazard type suits that eliminates condensation and fogging from forming on the face masks and the window visors of the suit. The devices and methods have a sealed closed air space that can be formed from flexible see-through plastic in a cone shape that can be sealed between the mask and the visor. The closed air space can be pre-sealed to the visor/outer wall of the suit and have a second end fitted with an elastic type band that all...

Structures, devices, systems and methods of using fringe field switching mode liquid crystal display (LCD) in which the electrodes have a trapezoidal structure. The disclosed fringe field switching mode LCD includes common electrodes and pixel electrodes arranged on a back substrate to produce a fringe field. Each electrode is comprised of alternating sections of main bone and trapezoidal electrode.

Methods, systems, apparatus and devices for the lens design of an HMPD with eye-tracking capabilities. The integration uses a low-level optical configuration in order to achieve a compact, comfortable, easy-to-use system. The optical system is further designed and optimized for sharing of the optical path between the HMD and the Eye-Tracker with minimal performance loss for both tasks.

A motor including a mounting shaft having a hollow channel and a bearing attached to each end, a cylindrical hub having a hollow core for the mounting shaft, and plural rows of plural Molded Magnetic Flux Channels with a hollow core and a channel forming a U-shaped recess and mounted the surface of the hub, each row corresponding to a motor phase. Each magnetic flux channel forms two pole pieces divided by the channel. The motor also includes plural phase windings, one passing through each row o...

Systems, devices and methods of generating both a precision electrical timing signal as well as a precision optical timing signal. A novel, modified opto-electronic loop oscillator is used to drive a harmonic mode-locked laser. A novel opto-electronic loop has a larger "Q" factor by increasing the electrical loop oscillating frequency .omega..sub.0 by using a beat note created by the selection of two optical longitudinal modes from the mode-locked laser. The beat note is detected and divided dow...

Methods, systems and apparatus for using nanoparticle seeded short-wavelength discharge generator sources discharge sources, for use with X-ray, XUV and EUV light emissions. Applications can include EUV lithography. Additional embodiments can use the generator sources for Hollow Cathode Plasma Discharge (HCPD) lamps, and dense plasma focus (DPF) devices and other sources. Target streams of gases such as Xe and nanoparticles such as tin, copper, or lithium can be heated with laser type sources to...

Systems, methods, apparatus and devices for head mounted stereoscopic 3-D display devices using the tunable focus liquid crystal micro-lens array eye to produce eye accommodation information. A liquid crystal display panel displays stereoscopic images and uses tunable liquid crystal micro-lens array to change the diopter of the display pixels to provide eye accommodation information. The head mounted display device includes a planar display screen, planar tunable liquid crystal micro-lens array ...

A multi-domain in-plane-switching liquid crystal display with small color shift, wide viewing angle and fast response. The structure of the multi-domain in-plane switching liquid crystal displays comprises plural chevron-shaped common electrodes and chevron-shaped pixel electrodes, arranged alternatingly to form a multi-domain liquid crystal distributions. In an embodiment the structure includes a polarizer and an analyzer and the liquid crystal material is homogenously aligned. In another embod...