Wollaston polarizing prism

Wollaston polarizing prism

[′wu̇l·ə·stən ′pō·lə‚rīz·iŋ ‚priz·əm]
(optics)
A device for producing linearly polarized beams of light, consisting of two adjacent quartz wedges with their optic axes perpendicular to each other and to the direction of incident light.