Optimum Rotation Axis For A Flapping Mirror In Thermal Imaging Scanners

John Warner

doi:10.1117/12.957987

17 December 1979 Optimum Rotation Axis For A Flapping Mirror In Thermal Imaging Scanners

John Warner

Proceedings Volume 0197, Modern Utilization of Infrared Technology V; (1979) https://doi.org/10.1117/12.957987
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States

Abstract

An oscillating mirror is frequently used as a scan mechanism in thermal imagers. The correct location of the rotation axis to minimise unwanted displacements of a beam whose direction is being changed has been determined using a ray-tracing technique well suited to many problems in optomechanical scanner design. Numerical analysis reveals that a ray may be rotated by at least 20° about a point 10 units in front of a plane mirror if the mean deflection angle at the mirror is 120° and the rotation axis of the mirror is located 16.7 units in front and 5.8 units on the incidence side of the mirror.

Citation Download Citation

John Warner "Optimum Rotation Axis For A Flapping Mirror In Thermal Imaging Scanners", Proc. SPIE 0197, Modern Utilization of Infrared Technology V, (17 December 1979); https://doi.org/10.1117/12.957987

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