Laser speckle effect when the high powered laser to optical rough surface (i.e., the average fluctuation is greater than the wavelength of surface) on, because on the surface of a large number of random distribution of surface element scattering by the result of wavelet coherence of light field with stochastic spatial light intensity distribution, present granular structure, called a laser speckle effect. Speckle was discovered shortly after the laser was born. In the early work of holography and coherent light image processing speckle was treated as noise. Laser speckle effect when the laser to optical rough surface (i.e., the average fluctuation is greater than the wavelength of surface) on, because on the surface of a large number of random distribution of surface element scattering by the result of wavelet coherence of light field with stochastic spatial light intensity distribution, present granular structure, called a laser speckle effect. Speckle was discovered shortly after the laser was born. In the early work of holography and coherent light image processing speckle was treated as noise. When a Laser scatters diffusely off the surface or through a transparent scatterer (such as ground glass), a random distribution of bright and dark spots, called Laser Speckles or Speckles, can be observed in the light field on or near the scatterer surface. If the scatterer is rough enough, the pattern produced by this distribution is very special and beautiful (contrast ratio 1).
Laser speckle effect, when the laser to optical rough surface (i.e., the average fluctuation is greater than the wavelength of surface) on, because on the surface of a large number of random distribution of surface element scattering by the result of wavelet coherence of light field with stochastic spatial light intensity distribution, present granular structure, called a laser speckle effect. The causes and solutions of speckle problem of laser light source are discussedSpeckle was discovered shortly after the laser was born. In the early work of holography and coherent light image processing speckle was treated as noise. The homepage & gt; Projector & gt; Fault maintenance & GT.
With the development of 4K, 3D, laser, high frame rate, coaxial audio and other technical hot spots, laser projector products have been gradually promoted and popularized, laser light source has become a hot topic in digital film industry. Speckle is a problem in the application of laser light source in the field of digital movies, which directly affects the effect of watching movies. However, there are good methods to solve it. LaserSpeckles are randomly distributed bright and dark spots that can be observed in the light field near or on the scattering surface when the laser scatters diffusely or through a transparent scatterer (such as ground glass). Two concepts, "speckle" and "laser speckle", are mentioned in the discussion of laser speckle: speckle phenomenon is ubiquitous in the process of optical imaging, and the phenomenon of laser speckle is more obvious due to the high coherence of laser.
