The receiver of our green laser pointer could link to the computer by USB port

Since entering the 1990s, due to laser technology, beam forming technology, scanning technology, the rapid development of data modulation techniques, the variety of laser display become a reality. Current into the laser display applications can be divided into three-dimensional holographic displays, laser video projection display, the laser beam scan graphic display types. Among them, three-dimensional holographic display technology because of its dimension, separability, may overlap, easy to copy other significant advantages popular, holography, also known as holography, by definition is the subject of the record of all information. Then the    green laser pointer    could work.Not only did it like an ordinary camera records the object scattering light intensity, but also records the scattered light phase, and as such in order to reproduce the original three-dimensional images. Figure 9-14 with the following brief description of holographic recording and reproduction of works. In order to record the object wave phase, hologram recording light interference principle needs to be based. Hologram recording optical path as shown in Figure 9-16 (a) shows, the laser beam emitted from the beam splitter into two, which a bunch of direct exposure to the recording medium, called the reference beam; another bunch of shine was taken object, the scattering of light from the object hitting the recording medium, is called object beam.That is to say, the receiver of   50mW blue violet laser pointer     is necessary. Beam expander to expand the laser beam to light the object and recording media, and the beam and the reference material as possible so that light shines on holographic film to generate interference light intensity quite. Object beam and reference beam to form a dense interference fringes, the density and location of these stripes reflect the various parts of the object changes the phase of scattered light, striped light and dark contrast (ie contrast) is corresponding with the intensity of scattered light. This will record all the information objects, has been a hologram. Reproduction of the hologram diffraction theory based on light waves. Holographic fringes recorded on the film is a set of irregular diffraction grating. Use of Figure 9-16 (b) shows the optical path of the representation, when it was shot with the same laser as illumination light, shine the hologram on the diffraction occurs, resulting in a light propagating along the zero-order diffraction light and two ( ± 1 level) diffraction light. The receiver of our  100mW green laser pointer     could link to the computer by USB port.One - out in the original object and the diffraction light of the actual location of the object emitted light waves are identical, the human eye when the light is received, it means that the reproduction of the original object virtual image (figure 2). Another column reproduces the original object wave diffraction conjugate real image (Figure 3), which is located in the same side of the observer, if you really like in the conjugate position to put a screen, to meet certain conditions in the optical path directly on the screen get a real image. Three-dimensional holographic displays the main advantages are summarized below: 1. As the object wave holographic recording all the information, the reproduction of the material as the original objects on exactly the same, is a very realistic three-dimensional image, the stereo also has a polarizer method to generate the stereo does not have the advantages of visually shielding effect. You may use the  200mW green Laser Pointer     once you insert it without installing program.(2) Each part of the laser hologram, no matter how small, can reproduce the original object of the whole image, so even if there are defects in holographic pictures, still reproduce the entire scene being photographed.
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