Do you want to know "What is a document camera?"
A document camera is very similar to an overhead projector. In fact, they are overhead projectors (in a sense) depending on the model.
Also the fact being that it does what its original title says (overhead projector) project from the overhead.
The overhead projector is a device that resembles a box with a light projecting from the top.
It also has a mirror connected at the top.
In order for this to work you would have to have a transparent document that is being shown through the light that is on the top.
While these cameras perform the functions of the overhead projector, it actually replaced the overhead projectors as a better option.
It also was replaced for the improved functions that it provides. They are also known as visual presenters, docucams, and image presenters.
The main difference that this type of camera has that an overhead projector doesn't have is the ability to magnify images of 3-D objects in high resolution. They also are able to work with transparent objects.
Docucams are used in a wide array of businesses for many purposes. They are used in:
Usually when these are used in a classroom it is to teach a large group or to save the abundance of paper they would use for copies.
This camera would be effective to show training material documents as well as new products.
As many cameras that have been produced to date document cameras aren't obsolete. Many individuals still use document cameras for day to day activities. They are also used in many schools and universities due to the fact that most schools may not be able to afford newer up to date equipment.
Document cameras are made by a variety of companies. These companies include ELMO, AVerVision, WolfVision, HoverCam, Samsung, and Lumens.