Liquid crystal projector, and projection lens unit, optical...

Liquid crystal projector, and projection lens unit, optical...

Liquid crystal projector, and projection lens unit, optical...

Low noise blower clutch

Method and apparatus for adjusting cooling in projection system

Method and apparatus for cooling optics

Method for controlling dual lamp module

Methods and systems for improving operation of a video...

Methods and systems for improving operation of a video...

Methods and systems for improving operation of a video...

Multistage cooling system for projector

Optical apparatus

Optical apparatus

Optical apparatus and cooling method thereof

Optical equipment

Optical equipment with at least first and second ventilation...

Optical lens unit having internalized fan unit and projection ap

Optical parts casing and projector

Overhead projector

Overhead projector