Near-ultraviolet formation of refractive-index grating using...

Negative abbe number radial gradient index relay, method of...

Negative dispersion single mode waveguide fiber

Negative-dispersion optical fiber and optical transmission...

Nematic liquid crystal bistable display device with grey level

Nematic liquid crystal displays for low voltage direct...

Network for distributing signals to a plurality of user...

Network termination apparatus

Neural network analysis for multifocal contact lens design

Neutral bronze glazings

Neutral density solution

Neutral-color gray photochromic plastic article

New light polarizing films or foils and dyes for their...

New liquid crystal display device and method

New non-magnetic frame/clip

New rimless sunglass clip

Night and day periscope

Night sight with light diffraction pattern

Night vision and audio signal reduction system

Night vision backlighting system for liquid crystal displays