Optics for a single-lens video projector with color-specific pol

Optimisation of the illumination of a projection appliance

Opto-mechanical filter for blending of images from a digital...

Orienting projector

Original conveying apparatus

Original feeding device

Ornamental image display and sound device

Outer suspension type lens shielding mask for projection...

Outer suspension type lens shielding mask for projection...

Outer suspension type lens shielding mask for projection...

Output stabilization for a laser matrix

Over head projector apparatus and control method

Over-head projector with partial projection device

Overfill reduction for an optical modulator

Overhead projection having a friction secured adjustable...

Overhead projection highlighting device and method of use

Overhead projection system

Overhead projection system with lens assembly having concentrica

Overhead projector

Overhead projector