Piezoelectric actuated scanning mirror
2 Assignments
0 Petitions
Accused Products
Abstract
A scanning mirror useful in laser projection devices (LPDs) is provided. The scanning mirror is comprised of a substantially planar member having a movable reflective region and a base region coupled together by a split hinge. A foundation is coupled to the base region by at least one piezoelectric element extending therebetween such that movement the piezoelectric element is transferred to the movable reflective region through the split hinge.
20 Citations
21 Claims
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1. (canceled)
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2. A light scanning arrangement, comprising:
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a) a scan element oscillatable about an axis, and operative for reflecting light incident thereon;
b) a movable support having support portions at opposite sides of the axis;
c) a pair of torsion hinges spaced apart along the axis and connected between the support and the scan element for supporting the scan element for oscillation about the axis; and
d) a drive for directly moving the support portions and, in turn, for indirectly oscillating the scan element about the axis to scan the incident light. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A light scanning method, comprising the steps of:
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a) reflecting light incident on a scan element;
b) spacing a pair of torsion hinges apart along an axis, and connecting the hinges between the scan element and a movable support having support portions at opposite sides of the axis; and
c) directly moving the support portions and, in turn, indirectly oscillating the scan element about the axis to scan the incident light. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification