Optical aspect ratio control for video projection

Optical assembly and projector

Optical assembly for a projection system

Optical assembly for rear projection television

Optical assembly for reflective light valves

Optical baffling device

Optical beam scanning device, image forming apparatus

Optical block and liquid crystal projector

Optical block for high brightness full color video projection sy

Optical component and projector using the same

Optical component and projector using the same

Optical component casing and projector

Optical component casing, optical device and projector

Optical component casing, optical device and projector

Optical corrector

Optical data projection device

Optical device

Optical device and display apparatus

Optical device and optical apparatus

Optical device and projection system comprising the same