A novel design for speckle reduction based on a rotating ball lens is investigated. In addition, a standardized speckle measurement method is also developed and the parameters mainly accord with characteristics of human eye. This method could open up an avenue to the practical speckle measurement application.
We have promoted and demonstrated a relationship between speckle contrast and the fluctuation of the screen surface in Laser Display Technology (LDT). Based on the speckle theory, we analyzed the speckle characteristics of diffuse scattering screen, and obtained the relationship between speckle contrast C and the standard deviation of surface fluctuation height σh. Meanwhile, we used the precision probe surface profilometer to measure the height and morphology of 12 kinds of screens. Finally, we built a speckle testing platform to simulate human eye, and measured the speckle contrast of 12 kinds of screens. By analyzing the gain and speckle contrast parameters of glass bead screen and metal screen, we could conclude that glass bead screen was more suitable for LDT.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.