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Analysis of speckle reduction based on theory of optical eigenfunction

Analysis of speckle reduction based on theory of optical eigenfunction
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摘要 The principle of optical eigenfunction is used in the analysis of speckle reduction in laser projection display.When the moving diffiuser is used in the speckle reduction approach,the speckle contrast is decided by both the degree of freedom (DOF) of the projector and the area of resolving cell of the eyes on the screen.It can gain high DOF of the projector by increasing the space-bandwidth product,i.e.,adopting a projection lens with a high numerical aperture or a large viewing field.The best scheme is equalizing the DOF of the scattering wave from a moving diffiuser to that of the projection lens.The experimental results are in accordance with the conclusion drawn by optical eigenfunction. The principle of optical eigenfunction is used in the analysis of speckle reduction in laser projection display.When the moving diffiuser is used in the speckle reduction approach,the speckle contrast is decided by both the degree of freedom (DOF) of the projector and the area of resolving cell of the eyes on the screen.It can gain high DOF of the projector by increasing the space-bandwidth product,i.e.,adopting a projection lens with a high numerical aperture or a large viewing field.The best scheme is equalizing the DOF of the scattering wave from a moving diffiuser to that of the projection lens.The experimental results are in accordance with the conclusion drawn by optical eigenfunction.
出处 《Chinese Optics Letters》 SCIE EI CAS CSCD 2011年第3期48-50,共3页 中国光学快报(英文版)
基金 supported by the Region Major Program of Fujian Province Natural Science Foundation of China (No.2009H4003) the Natural Science Foundation of Fujian Province of China (Nos.2009J01277 and 2010J01325)
关键词 BANDWIDTH Optical instruments Optical projectors SPECKLE Bandwidth Optical instruments Optical projectors Speckle
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