normal> Chapter 1   Holographic principle [4] Normal > holographic technology is to introduce an appropriate coherent reference wave and object light wave interference to get an interference field, record the interference field and get a hologram, which not only records the amplitude information of the object light, but also the ordinary The phase information of lost photographic technology is also recorded. Normal > Holography includes two processes of recording and reproduction. 1.1   Record principle Normal > The record is the interference pattern between the light wave of the subject and the reference light wave . The pattern is developed to form a hologram . The best source for recording is a laser. The laser has a high degree of spatial and temporal coherence, a small beam divergence angle, and a high concentration of energy. 1.2 Reproducing principle   The first item in the formula is only one constant, which is called the direct light wave or the zero-order light wave, and the second item has the object light wave information, which is called the original image light wave IO or +1 order diffraction wave, and the third term is The conjugate information of the object light wave is called conjugate lightwave IC or -1 diffraction light wave. When the reproduction light is the reference light R(x,y), a virtual image of the object is obtained at the time of reproduction. Bleaching Cream,skin bleaching cream,hydroquinone bleaching cream,armpit bleach,underarm bleaching cream Zchoise Cosmetic Factory , https://www.gzzchoise.com
The complex light field composed of the object light wave with the object feature information has a complex amplitude expressed as follows:
The reproduction process generally illuminates the hologram with a light wave (referred to as reproduction illumination light wave) similar to the reference light wave. The light wave is:
February 29, 2024