The Surprising History of the Overhead Projector… #WayBackWednesday

The idea of projecting images can be dated back to ancient times from the ‘‘camera obscura’’ of Ancient Greece, to the mirrors used in Ancient Egypt and the combination of the two for viewing and trace subjects on paper during the Renaissance period. However, no projector is remembered as fondly, possibly due to their popularity in the classroom, like the overhead projector.

Let’s take a look back at a timeline of the Overhead projector:

1870s

Credit for its creation can be given to Jules Duboscq, a French inventor who was also responsible for the stereoscope, colorimeter and polarimeter. His thing was optical instruments and his idea for what at the time was known as a ‘‘viewgraph’’ would lay the groundwork for the development of the overhead projector as we know it today.

1945

Overhead projectors were used by the U.S. Army to train groups of servicemen during World War II.

1950s

Roger Appledorm, a research scientist for one of the first major manufactures of overhead projectors 3M, is widely attributed to developing the thermo-fax copying process and later a machine that could copy into projection transparencies.

1954

Before becoming a common classroom teaching tool, overhead projectors such as the Tel-E-Score, were used in bowling alleys to project scores. Here it is in action:

https://youtu.be/62jc0fIpt5s

1960s

Overhead projectors become a key teaching tool; teachers prefer this method to the traditional blackboard, as they are able to face the students while writing and presenting information.

1980s

With overhead projectors becoming so popular in the classroom along with computers such as the Macintosh, soon liquid-crystal panel mounted in a plastic frame would be placed on top of the projector and connected to video outputs of computers.

1990s

Overhead projectors reached its sales peak in the 1990s.

Soon after peaking, the inevitable downfall of the overhead projector as technology became more interactive and computerized.

NEVER FORGET

The post The Surprising History of the Overhead Projector… #WayBackWednesday appeared first on AV Planners.