rotating wedge

rotating wedge

[′rō‚tād·iŋ ′wej]
(optics)
A circular optical wedge mounted to be rotated in the path of light to divert the line of sight to a limited degree.
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References in periodicals archive ?
A He-Ne laser beam focused down to spot, performs circular scanning by a rotating wedge prism of the sample measurement volume.
The process allows an initial row of 29 bottles to form in front of the cooler while the second row is formed on the delivery table top conveyor by utilizing three continuous motion, rotating wedges. These wedges rotate in the same direction of flow as the bottle supply.
Three rotating wedges continuously and simultaneously allow a row of bottles to form while laterally directing the preceding row of bottles into the cooler.