| Overhead Projectors which are also known as OHPs | | | | the attending delegates can take the notes down. |
| are used to project and enlarge an image which is on | | | | This is a very convenient feature that most |
| a transparent sheet onto a distant screen for easy | | | | projectors should offer. |
| viewing. It is quite an old type of device, yet, widely | | | | If you are a person/company who hires overhead |
| used in businesses, schools, colleges and universities. | | | | projectors often, it is important to be familiar with |
| Places such as these have their own projectors as | | | | the different types of projectors so that you will be |
| they are required very frequently. However, an | | | | able to request for the right one according to your |
| Overhead Projector Hire is required for events such | | | | event' requirement. There are 3 general types of |
| as conferences, meetings, exhibitions and similar | | | | projectors: |
| events. Companies and persons, who won't require | | | | · Transmissive |
| the use of this electronic device often, opt for a daily | | | | · Reflective |
| rental - as and when required or if required for period | | | | · Opaque |
| of time, they settle in for a long term lease. | | | | Transmissive: These projectors are generally |
| When the machine is rented out, most of the rental | | | | comprised of a base with a transparent stage area, a |
| companies offer the required accessories as well, | | | | light source inside the base, a projection head |
| such as, transparencies, overhead projector trolleys, | | | | mounted above the stage and a condensing lens |
| projection screens which are in varied sizes etc. | | | | system located near the stage for directing the light |
| Before renting out the projector make sure that it | | | | towards the projector head. Above the base is a |
| has all, or at least most the features that are | | | | projection head which includes lenses and a mirror |
| required to produce a clear picture, such as: | | | | which functions to gather light from the projector |
| - Dual lamp | | | | base and redirects it to the distant screen. The |
| - Folding arm | | | | projection head is supported by a post as it is |
| - High/low brightness control | | | | necessary to be adjusted so that the projected |
| - Colour fringe control | | | | image on the screen may be brought into focus. |
| - Safety cut out | | | | Reflective: A reflective overhead projector is used |
| - Whisper quiet operation | | | | for presentation of an image to number of viewers. |
| When you call your rental agent for your Overhead | | | | Opaque: Opaque projectors are similar to the |
| Projector Hire, you can discuss all the important bits | | | | Reflective projectors but are able to project images |
| of information and check its availability, before | | | | of opaque materials and three dimensional objects in |
| committing yourself to hire it. | | | | addition to transparencies. |
| A vital point to keep in mind is that the projector | | | | From these three types of basic overhead projector |
| should allow the presenter to write down ideas and | | | | systems, the Transmissive Projector is the larges and |
| points as the discussions are going on, so that it can | | | | heaviest. |
| be projected instantly onto the screen in order that | | | | |