A device used for the optical display of images (or moving pictures) by illuminating a surface, usually a display

Most projectors create the image by passing bright light through small transparent lenses, but there are newer types that create the image directly through the laser.

There is a virtual eye projection, or eye projector, that displays the image directly to the eye instead of using an external display.

Projector  devices can be used in educational fields in three ways (writing – pictures – video)

The projector beams are shone on a large white board that takes up the wall space of a room or hall (for clarity in display) and it doesn’t hurt if they are shined on the wall without the whiteboard.  As these rays reflect the computer screen, video, TV or camera displayed in large sizes, which everyone in the room sees.

The most well-known type of projector today is the video projector, which is a modern alternative to previous old types such as the slide projector.

There are devices that work without connecting to any other devices such as Toso Lap U8 and other devices that connect them with their own wires used in the computer connection via the existing TV out input In a computer using a wire for the same entrance and the other end of the wire is the TV connection known in many regular TVs, and that is the entrance color, which is yellow.  As for the way to display the slide with a projector using a computer, which is to connect them by wire and start the presentation by pressing the fn + F4 or fn + F5 buttons on the computer, as each computer type has its own way of starting the display conversion.  And the last point is the sound output, as the projector contains an audio port that can be connected to external speakers.

1.Practical use: Presenting a lecture, texts, information or content from the projector directly or by connecting it to a computer.

2.Entertainment use: To watch movies at home and simulate movies

Projector lens:

One of the expensive things in a projector is the need to change the lighting lens every once in a while, and the lens is usually expensive and needs to be changed every 3000 or 4000 hours of operation in old projectors.  This defect is no longer present in modern LED projectors and televisions, as the operating time for LED strips ranges up to 20,000 hours (and this may last you for tens of years depending on your usage).

Projector ports:

It is very important to carefully review the projector ports and what external devices it supports.  Most projectors provide the traditional RGB port for a computer, if you are interested in having more ports, pay attention to it: such as the audio ports that the projector supports and other devices that can be connected to it other than a computer.

Projector system:

There are projectors equipped with Android system, such as Toso Lap u9, and devices that connect to a fixed or laptop computer and do not have an operating system.

There are devices that enable you to view your projects easily without connecting them to any other devices, and you can make presentations, view projects, view video files anywhere and at any time, it is a tool specially designed and prepared for your service as it is equipped with sound and internal storage unit, and there are devices connected to the Internet  The antenna runs many different Microsoft applications such as: – Office programs, Google browser, chat programs (MSN, SKYPE, QQ), Internet TV, audios, e-books, games

The “hologram” technology has recently spread greatly, as some have resorted to developing it. It is basically holograms based on a technique that allows reconstructing the image of objects in their various dimensions in the absolute space, as it relies on light waves that assume the responsibility of three-dimensional imaging of objects with high efficiency.

Hologram 3D projector:

The idea of ​​its work is based on a collision between light waves and the thing that the user wants to photograph and display, for specialized hologram devices, the device plans the object to be photographed and then transmits the necessary information about it, and this device allows the possibility of re-creating the wave again in the case of lighting the hologram device, as well as  Some regular applications on smartphones have begun to provide hologram technology to ordinary users through some simple applications and tools

Hologram 3D projector:

It is a visual display that recreates the image by displaying it in a three-dimensional image, in a high-quality way, so that the image floats in the air as a three-dimensional gel body hull and appears as a spectrum of colors embodied in the shape to be displayed.

Business idea

Hologram features:

1.The hologram allows users to see and see objects from all directions.

2.It can also be used to capture and monitor more than one image.

3.In addition to the ability to use it currently to display some pictures.

4.Promote a number of things in live and tangible form

Hologram history:

The history of this technology goes back to 1947 at the hands of the scientist (Dennis Gabor) to improve the magnification power of the electron microscope, and because of the light resources available at that time, which were not coherent, i.e. monochromatic, which delayed the emergence of stereoscopic imaging until 1960, the time of the emergence of the laser.  In the year 1967, the scientist Geodes Optics and the scientist Emmett Leith from the University of Michigan were able to display the first hologram after many experiments.