A projector panel is a special box that sits on top of an overhead projector. The panels come in a range of abilities to project colors and resolutions. Projection panels require special overhead projectors that use low-wattage lamps to avoid melting the panel. These lamps should produce at least 3,000 lumens to provide as bright an image as possible. If you want to be able to pause during your presentation and discuss some point with your audience then use screen projection.
People feel more comfortable with a frozen screen than with a frozen television display.
The projected image can be made quite large and is easy to view even in very large classrooms. Furthermore, the size of the image can be adjusted by moving the overhead projector closer to or farther away from the screen. Text, graphics, and animation are all displayed clearly and crisply. You may freely choose from the full array of fonts available to you. A disadvantage of the projection method is that the image is not as bright as the television image.