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US 10,095,023 B2Granted
Apparatus comprising a spring and an optical element suspended thereon
AssigneeFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
InventorsShanshan Gu-Stoppel, Dirk Kaden, Christian Eisermann
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Abstract
Apparatuses with actuators having actuator-side attachment areas disposed thereon, an optical element having mirror-side attachment areas disposed thereon and springs are described, wherein an optical element is connected to actuators via two or four springs.
Claims9
Apparatus, comprising:
- a first actuator;
- a second actuator;
- an optical element;
- at least one first spring disposed between the first actuator and the optical element;
- at least one second spring disposed between the second actuator and the optical element;
- wherein the optical element comprises exactly two spaced-apart optics-side attachment areas;
- and
- wherein the at least one first spring is disposed on the first optics-side attachment area and the at least one second spring is disposed on the second optics-side attachment area, such that actuation of the first or second actuator causes tilting of the optical element around two axes;
- wherein the first spring is disposed on a first actuator-side attachment area on the first actuator and the second spring is disposed on a second actuator-side attachment area on the second actuator;
- wherein expansions of lines between the first actuator-side attachment area and the first optics-side attachment area and between the second actuator-side attachment area and the second optics-side attachment area intersect at an angle of less than 180° ;
- and
- wherein a course of the springs along the axial expansion comprises a curvature;
- wherein
- the spring runs within an area defined by circular arcs intersecting the first and the second end of the spring;
- wherein
- each circular arc comprises a radius that is greater than 0.75 times a distance between the first end and the second end of the spring;
- and wherein
- each circular arc comprises a center positioned along a line that is positioned perpendicular to a straight line connecting the first end and the second end of the spring to one another.
15 more elements
Apparatus, comprising:
- a first actuator;
- a second actuator;
- an optical element;
- at least one first spring disposed between the first actuator and the optical element;
- at least one second spring disposed between the second actuator and the optical element;
- wherein the optical element comprises exactly two spaced-apart optics-side attachment areas;
- and
- wherein the at least one first spring is disposed on the first optics-side attachment area and the at least one second spring is disposed on the second optics-side attachment area, such that actuation of the first or second actuator causes tilting of the optical element around two axes;
- wherein the lateral expansion of the springs varies across the axial course;
- wherein the lateral expansion is implemented within an area defined by circular arcs which intersect the first and the second end of the spring;
- wherein
- each of the circular arcs comprises a radius that is greater than 0.75 times of a distance between the first end and the second end of the spring;
- and wherein
- each circular arc comprises a center positioned along a line that is positioned perpendicular to a straight line connecting the first end and the second end of the spring.
11 more elements
Dependencies are inferred from the claim text.