Speckle characterization in laser projector display
Journal article, Peer reviewed
Permanent lenke
http://hdl.handle.net/11250/2418089Utgivelsesdato
2012Metadata
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Originalversjon
World Academy of Science, Engineering and Technology: An International Journal of Science, Engineering and Technology 2012;63:459-462Sammendrag
Speckle phenomena results from when coherent radiation is reflected from a rough surface. Characterizing the speckle strongly depends on the measurement condition and experimental setup. In this paper we report the experimental results produced with different parameters in the setup. We investigated the factors which affects the speckle contrast, such as, F-number, gamma value and exposure time of the camera, rather than geometric factors like the distance between the projector lens to the screen, the viewing distance, etc. The measurement results show that the speckle contrast decreases by decreasing F-number, by increasing gamma value, and slightly affects by exposure time of the camera and the gain value of the camera.