Projector with foreign matter detecting means
Reading device
Rear projection optical system
Reflected display system for text of audiovisual performances
Reflecting illumination projecting device
Reflecting optical element, optical system and optical...
Reflection type image forming optical system and projector
Reflection type overhead projector
Reflection type projection optical system
Reflective LCD projector
Reflective LCD projector
Reflective light valve-based multimedia projector employing...
Reflective optical assembly
Reflective projection display system
Retractable image projecting system
Retrofocus lens for overhead projector
Rotating backscreen and/or projectors for off-axis large field o
Scan type display optical system
Sensory integration system and image display device and concave
Shortened asymmetrical tunnel for spatially integrating light