Overhead projectors use transparencies to project enlarged images of presentation materials on a wall or projector screen. Obtaining overhead projectors education and training can help you learn more about using overhead projection devices to take enhance your presentations during staff meetings, corporate retreats, stockholder updates and sales pitch sessions.

There are a range of advantages to using overhead projectors. For example, overhead projection devices can be used to easily highlight specific presentation points and focus the audience’s attention on that material. By using an overhead transparency projector, the presenter also has the ability to quickly modify materials without disrupting the presentation. One of the primary disadvantages of using overhead projection devices is transporting the device to and from presentations. Many overhead projector manufacturers are addressing this issue by offering smaller, portable overhead projectors for sale. Consider the following tips to help you obtain the overhead projectors education and training you need:

1. Learn more about using overhead projectors.

2. Research various types of overhead projection devices.

3. Obtain instruction on how to set up overhead transparency projector devices.

Action Steps
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Learn best practices on using overhead projection devices

The overhead projector is one of today's most widely used presentation devices. Using overhead projectors can be easily learned, but there are a few tips that presenters should know before attempting a presentation using overhead projection devices. For example, presenters should never stand in front of the overhead projector and should always practice their presentations using their visual aids before their audience arrives.

I recommend: Obtain more overhead projector training tips by visiting LJLSeminars.com. You may also consider obtaining instruction on using overhead projection devices by visiting the Pacific Lutheran University Media Services website.

Determine which overhead projector may fit your needs through education about what's available

Educating yourself on overhead projection devices should include familiarizing yourself with the types of projectors that are on the market and the setting in which each is most appropriate. Transmissive, reflective and opaque are the three primary types of overhead projection devices. Of the three types, transmissive overhead projectors are generally the largest and consist of a transparent stage area, a light source and a projection head mount. A reflective overhead projector is typically used to present information to a large audience. Opaque overhead projectors have many of the same characteristics of reflective overhead projectors and can additionally project three-dimensional objects.

I recommend: Learn more about the different types of overhead projectors by checking out electronics-manufacturers.com. You can also visit Dukane to learn more about how to choose an overhead projector to fit your presentation needs.

Get instructions on connecting overhead projectors

Setting up overhead projectors can be a frustrating and confusing experience for novice users. While set-up instructions will vary slightly among suppliers of overhead projectors, individuals can obtain basic training to help them learn how to set up virtually any type of portable data projector.

I recommend: Learn more about connecting an overhead projector to a laptop by checking out instructions provided by The Regents of the University of California. You may also obtain overhead projector connection instructions by visiting the San Francisco State University website.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  When using overhead projection devices, it's important that presenters properly plan for audio visual limitations of the presentation room. Presenters should always carry an extra extension cord, a three-prong plug adapter, spare bulb and a transparency pen.

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.

Business operators might buy from suppliers of overhead projectors for the following situations:

1. For use in conference or board rooms to present anything from budget to strategic planning.

2. In classrooms to accommodate special kinds of visuals for general learning or specific outlines of procedures.

3. For use in churches, retreat centers or anywhere clients will want to gather to view projected text for songs or services.

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Get traditional overhead transparency projectors

You can find online vendors for the classic style of overhead projectors; these models amplify transparent sheets for easy use in the classroom or auditorium.

I recommend: Suppliers of overhead projectors like Camcor have several product models available starting at just over a hundred dollars. The Dukane Sunsplash series offer durability and simple design. Look for other models like the Apollo V3000 on sale at the Camcor site.

Browse multimedia projector models

Along with the old style of free-standing overhead projectors for sale online, sellers now offer a diverse lot of new media projectors. These models are generally more compact and versatile. You can look for overhead projectors that display Powerpoint or slides. Take a look at multiple sites to find a multimedia projector that suits your needs.

I recommend: BuyerZone and Shopping.com give browsers multiple returns on overhead projectors for sale from overhead projector manufacturers. For an online store site, check out the projector models at providers of overhead projectors like Super Warehouse, where LCD and digital models are available.

Get mounts for projectors

If your space is limited, you may want to look into mounts for overhead projection devices. Online sellers like Mounts and More offer durable metal models with boom arms and adjustable extensions for keeping your projectors out of the way when they are not in use. Any model that is a reasonable size can be mounted for optimal storage; it's also easier to work with mounted projectors that are near power outlets and placed for appropriate distance, rather than wheeling out a free-standing unit and setting it up at the last minute.

I recommend: Check out the wealth of mounting products at Mounts and More's online pages. You can get sturdy mounting equipment to outfit rooms permanently; check product specs from overhead projector manufacturers to see what size of mount you'll need.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  Always consider what kind of presentations you'll want to accommodate when choosing equipment. For just text-based presentations, a traditional projector might be great, but for flashy video, you'll want a newer model with a digital interface. Choosing between digital and analog machines, or whether your want a fixed or portable data projector, are choices you'll make based on budget and needs.

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. An overhead projector must function when you need it, where you need it. To fully understand the machine, you should know key terms for its parts, as well as for light sources.

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Fresnel Lens

A Fresnel lens controls the refraction of light. The lens is flat in nature and is made up of close grooves. This lens is typically part of the stage part of the overhead projector where material is placed for projection onto the screen.

I recommend: Rock Castle discusses a variety of uses for the Fresnel lens.

Lumens

Lumens are the unit used to measure the brightness of an overhead projector. The more lumens that a projector has, the brighter the light. The word comes from the Latin word 'lumen,' which means light.

I recommend: Get a detailed description of lumens from Wise Geek.

Triplet lens

A triplet lens is a lens in an overhead projector that has three parts all in one assembly piece, as opposed to a convex lens. The lens helps focus the image on the screen.

I recommend: Hommie explains the advantages of a triplet lens.

Keystoning

Keystoning, in terms of overhead projectors, takes place when there is distortion of the displayed image. The distortion is caused when the image is not perpendicular to the screen on which it is displayed. Keystoning is often corrected by tilting the screen.

I recommend: Learn about keystoning at Cidde.Pitt.edu.

Luminous efficacy

The luminous efficacy is calculated by dividing the total luminous flux from a light source by the input given by the lamp. This total is measured in lumens. When expressed as a percentage, it is often called luminous efficiency.

I recommend: Answers.com discusses different ways of using the term luminous efficacy.

Lamp

The term lamp in an overhead projector describes the light source. A lamp is a small lightbulb that creates the light which the lens uses to display the image.

I recommend: See a variety of overhead projector lamps at MB Electronics.