What is holographic imaging technology and its development history?

Holographic technology: a technology that records and restores the real situation of an object by using the principles of interference and diffraction in science.

Holography: As the name implies, literal understanding is all information, and projection is a special method to record and restore the light information of an object at the same time. Holographic imaging technology: also known as virtual imaging technology or holographic imaging technology. Principle: Light wave interference is used to record the data of all aspects of the object light wave, and at the same time, diffraction principle is used to display information to realize imaging.

Holographic imaging technology has developed rapidly since 1960s. Holographic imaging technology: also known as virtual imaging technology or holographic imaging technology. Using light wave interference to record the data of all aspects of object light wave, and using diffraction principle to reproduce information. Because the reproduced information retains all aspects of the original, the image has a strong three-dimensional sense, three-dimensional characteristics and the same visual effects, including positional parallax. Because optical information is recorded in holographic images. Any part can display a part of the image, and different images in various states can be recorded by multiple exposures and displayed without interference. The holographic image formed by laser irradiation can also be enlarged or reduced.

When human eyes observe horizontally, the angles are different, side by side, and the interval is 6 cm, which produces a three-dimensional sense. According to the principle, 3D technology can be divided into two types: using human eyes to generate stereoscopic impression; Display 3D stereoscopic images, such as basic stereoscopic imaging. ?

1947, Gabor put forward the imaging concept of holography in the process of studying microscope. Optical interference is used to record specific light waves and reproduce them under special conditions, forming a three-dimensional image and recording all aspects of the object, so it is called holography and contains all the information. However, the imaging quality is poor, and the performance of mercury lamp is poor, so it is impossible to separate diffracted waves. It will take ten years to make progress. ?

Holography has developed rapidly since the 1960s.

1962 Les and Apatinix built a side-looking radar. In terms of theoretical application, the invention of off-axis holographic technology has entered a new stage of development. Using off-axis light to record holographic images and then obtain diffraction components can clearly observe the images and overcome the problem of poor imaging quality.