Compact X-Y positioning mechanism for microfiche

Compensation device at projectors with exchangeable and vertical

Compensation element adjustment mechanism and projector

Compensation of light source intensity pulse in scrolling...

Component displays and beamsplitter that form composite image

Composite apparatus for the direct projection and overhead or ba

Composite Fresnel lens assembly

Composite optical display method and related apparatus

Composite optical image projection system

Compound polarization beam splitters

Compound polarization beam splitters

Computer controlled animation projection system

Computer controlled slide projector interface arrangement

Computer processed integral photography apparatus and...

Computer projector method and apparatus having a safety...

Condenser lens system for overhead projector

Condenser lens, polarizing element, light source apparatus, and

Condenser system

Condensers for illumination systems

Condensers for overhead projectors