Wavelength encoded optical switches
Wavelength shift switch and sensing system
Wide angle narrow bandpass optical filter system
Wide aperture optical communications detector
Wide dynamic range analog signal optical communication system
Wide field optical system
Wide laminar fluid doors
Wideband heterodyne receiver for laser communication system
Wideband tunable coherent source
Wien filter
Wire surface monitor
Wireless remote-control system for a camera or the like
X-ray light divider
X-ray sensor arrays
X-ray shielded projection lens
Zoom lens assembly
Zoom lens system for use in microfilm projection apparatus