Wide-angle ITER-prototype tangential infrared and visible viewing system for DIII-D

Demonstration of ITER Operational Scenarios on DIII - D

The DIII-D program has recently initiated an effort to provide suitably scaled experimental evaluations of four primary ITER operational scenarios. New and unique features of this work are that the plasmas incorporate essential features of the ITER scenarios and anticipated operating characteristics; e.g., the plasma cross-section, aspect ratio and value of I/aB of the DIII-D discharges match t...

Real-Time Warps for Improved Wide-Angle Viewing

Providing wide angle views is often advantageous to provide context, such as in video conferencing, or when viewing panoramic imagery. Unfortunately, wide angle images often appear distorted. The limited image size on monitors or paper together with standard viewing distances, results in the angle subtended by the image when viewed usually being much smaller than the field of view of the camera...

Vitreoretinal instruments: vitrectomy cutters, endoillumination and wide-angle viewing systems

There have been many advances in vitreoretinal surgery since Machemer introduced the concept of pars plana vitrectomy, in 1971. Of particular interest are the changes in the vitrectomy cutters, their fluidics interaction, the wide-angle viewing systems and the evolution of endoillumination through the past decade and notably in the last few years. The indications of 27-gauge surgery have expand...

High Speed and Wide Viewing Angle Liquid Crystal Displays

New type of antidrying lens for vitreous surgery with a noncontact wide-angle viewing system

Drying of the cornea during surgery, which causes poor visibility of the fundus, is one of the more serious problems when using a noncontact type wide-angle viewing system. We developed an antidrying corneal contact lens for use with this type of viewing system. The lens has a very thin meniscus made of polymethyl methacrylate with a large outer diameter. Following application of the viscoelast...