What is holographic imaging technology?

Holographic image technology is a technology to record and reproduce the real three-dimensional image of an object by using the principles of interference and diffraction. Holography uses laser as the illumination source, and divides the light emitted by the light source into two beams, one of which is directly directed at the photosensitive plate, and the other is reflected by the subject and then directed at the photosensitive plate. These two beams of light are superimposed on the photosensitive plate to produce interference. Finally, the hologram reconstructed by the basic principle of digital image is further processed to remove digital interference and get a clear holographic image.

Because the human eye is observing the object horizontally, the observation angles are slightly different, so the images are side by side, with a gap of about 6 cm in the middle, and the fusion reflection and visual psychological reaction of the nerve center have a three-dimensional effect. According to this principle, 3D display technology can be divided into two types: one is to generate stereoscopic impression by using the parallax characteristics of human eyes; The other is to display real 3D stereoscopic images in space, such as stereoscopic imaging based on holographic imaging technology.

Holography uses laser as the illumination source, and divides the light emitted by the light source into two beams, one of which is directly directed at the photosensitive plate, and the other is reflected by the subject and then directed at the photosensitive plate. The superposition of two beams of light on the photosensitive plate produces interference, and the sensitivity of each point on the photosensitive plate changes not only with the intensity, but also with the phase correlation of the two beams of light. Therefore, holography not only records the reflection intensity on the object, but also records the phase information.