It began with simple backlit panels that threw text and line drawings up onto a wall or screen. These days, overhead projection has diversified into an array of products businesses use for public presentation, including slide-based models, classic table projectors, mounted digital projectors and other types of tools for audiovisual projection.
Many companies and organizations use overhead projectors during meetings and presentations in order to display information for a viewing audience. The audience may consist of students, board members, employees or even potential clients.
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An overhead projector is a variant of slide projector that is used to display images to an audience. Contents. [hide]. 1 Optical system. 1.1 Condenser; 1.2 Focus ...
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Oct 12, 2014 ... Below are the Popular Conference Room Projectors for both small and large rooms. The major difference between these two groups is the ...
Having a projector to watch movies is great, but they can be very expensive. These instructions will show you how to make an overhead projector (like what you ...
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Professional speaker and presentation skills expert Lenny Laskowski talks about using overhead transparencies & overhead projectors.
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Overhead projectors are one tool a person can use to give a presentation. They use the mechanics of light, lens and mirror configuration to pick up data contained on a transparency and display it on a wall or projection screen for viewing by many people at one time. The data or image is first copied onto a transparent film that is placed over a light box. Above the light is a lens that captures the light and the image. Above that is a mirror and another lens which directs the light and the image forward, creating the projection.
Projectors are not used as often since the creation of computer presentation software and hardware but can still be useful. Seminars and training classes often use this method for displaying information for students during a lecture. Other uses are to display business data, charts and graphs during meetings. Though somewhat bulky, they can be transported so that presentations can be given anywhere.
To purchase overhead projectors requires a little knowledge about the product and where to find vendors. Finding replacement parts can also be tricky as not many companies still make these devices. A quick search of the web may not yield the most desirable results but Business.com can provide the links you need to find suppliers of equipment and parts.
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