Lcd Technology For Computer Optical Components

The transverse intensity distributing of laser beam is gaussian distribution, in actual application, the distribution often need to be reshaped. Now Computer Optical Elements (COES) are used to realize this function. This kind of elements can generate arbitrary shape of wave surface theoretically and their average diffraction efficiency are very high, but the manufacturing processes of elements are so complicated that the application scope of them is restricted.In this dissertation, laser beam shaping is selected as the breakthrough point, and liquid technology is used to realize the function of COES. The design theory, manufacture methods of COES, the liquid technology to realize COES, and the theoretical analysis of black matrix effect are studied deeply.Firstly, two kinds of simple elements which reshape the laser beam to one flat square and two flat ellipses are designed using geometric theory, at the same time, the design results are simulated using MATLAB7.1 .Then, the elements mentioned above are designed again using scalar diffractive theory for comparison, during this process, G-S algorithm is used and optimized. After the optimization the calculation speed is increased almost 15% . In this part , two design theories of COES are studied deeply, and the advantages and disadvantages of two theories are analyzed.Finally, the basic principle of realizing COES using liquid technology is introduced, some experiments are conducted to verify the theory, at the same time, a few factors that influence the imaging effect are analyzed. During this process, black matrix effect is studied intensely, then the black matrix effect is analyzed using Fourier optics. In order to know the black matrix effect vividly, the interference of the effect is simulated using MATLAB7.1, according to the simulation results, some measures that can be used to reduce the interference of black matrix effect are put forward.