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Method and apparatus for optically monitoring the angular position of a rotating mirror (1974)

Cline, R. W. ; Lansing, J. C., Jr.

In: CASI

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Publication Date: 2019-06-27

Description: An optical system monitors the angular position of a rotating scanning mirror to indicate the effective start and end of each scan. At a certain angular position, a ray of energy transmitted to the mirror is reflected a plurality of times between the reflectors associated with the optical system and the line on the mirror parallel to the axis, and then to a detector to sense that angular position. A single optical system may be arranged to sense a plurality of different angular positions for each revolution of the mirror.

Keywords: GENERAL

Format: application/pdf

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