Abstract

A motionless despeckle element based on Mie scattering and Brownian motion of suspended particles is proposed, which is achieved by filling a light pipe with diluted milk in laser projection systems. The Brownian motion of the milk fat particles leads to the superposition of the intensity of the instantaneous scattered light within the integration time of the human eye, which causes a reduction in laser speckle contrast because of temporal averaging intensity. Experimental results show that the speckle contrast mainly depends on the concentration of the suspended fat particles, and can be reduced down to 3.94% at the fat particle concentration of approximately \$7.0 \times 10^{-4}\$ \$\mu\$ m \$^{-3}\$ .

© 2013 IEEE

PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription