Balanced optical system
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United States of America Patent
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-
Aug 16, 1988
Grant Date -
N/A
app pub date -
Oct 14, 1987
filing date -
Oct 23, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical element (10) is pivoted for limited rotation about an axis (12). An actuator arm (14) is rotatable by an actuator (13) about an axis (15) and is connected to the optical element by a first link (16). A second link (21) connects the actuator arm (14) to a balance arm (18) which carries a balance mass (20) and is pivoted about an axis (19). The arrangement is such that the line (23) joining the axis (12) of the optical element to the point of connection between the first link (16) and the optical element (10) is always parallel to the line (24) joining the axis (19) of the balance arm (18) to the point of connection between the balance arm and the second link (21).
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