Successfully built 3D laser projector to create images in the air

3D projection images are now very realistic, Hologram technology even erases the gap between illusion and reality. However, the drawback is that a screen is needed. Now scientists have successfully created 3D laser projectors that can create images directly into the air.

3D projection technology now requires a projection screen as a display screen. This screen is very diverse (wall, fabric or a layer of mist or a thin layer of water) and plays an important role in 3D display because the quality and stability of this screen will affect image quality get out. Recognizing this limitation, scientists from Aerial Burton, Japan, have successfully created 3D projectors that display directly in the air , using laser 3D laser technology , without the need for a screen role. mat.

3D laser projectors can create images without a screen.

Although this 3D projection technology has not been able to display high-resolution detailed images as often seen on projectors, this is a big development, when image display is no longer limited in the space not provided by the screen, now the projection will no longer be spatially limited.

The principle of operation of current projectors is to take advantage of the reflection of the screen's light to the eye to see the image, but the principle of laser light 3D operation in this air is the work Use laser to ionize air molecules, turning them into display points. Laser beams will focus the energy on the point, locally ionizing the air molecules in that region, creating plasma light traces to display the image, but these bright spots are only emitted in very time. short, this 3D laser projector will have a relatively high frequency of light output, 1kHz (1000 light cycles per second).

The immediate task now is to improve the resolution of the image, a similar technology that has been used underwater and produces images with higher quality and resolution, however due to air density not with water, lifting the resolution of this 3D laser projector in an air environment will probably be a bit difficult.

3D laser projectors promise to produce images with higher resolution in the future.

The team is confident of the application of this 3D laser projector, which believes that the projection-free 3D projection technology will replace the message display boards, creating future interactive 3D images, public The technology will also allow users to bring this laser projector anywhere without worrying about screen problems.