US 11,880,044 B2
Optical device for enhancing resolution of an image or for reducing speckle noise
Manuel Aschwanden, Allenwinden (CH); Marcel Suter, Zürich (CH); Stephan Smolka, Zürich (CH); Roman Patscheider, Winterthur (CH); and David Andreas Niederer, Küttigen (CH)
Appl. No. 17/270,021
Filed by OPTOTUNE AG, Dietikon (CH)
PCT Filed Aug. 20, 2019, PCT No. PCT/EP2019/072306
§ 371(c)(1), (2) Date Feb. 21, 2021,
PCT Pub. No. WO2020/038965, PCT Pub. Date Feb. 27, 2020.
Claims priority of application No. 18189834 (EP), filed on Aug. 20, 2018; and application No. 19154900 (EP), filed on Jan. 31, 2019.
Prior Publication US 2021/0318548 A1, Oct. 14, 2021
Int. Cl. G02B 27/48 (2006.01); G03B 21/14 (2006.01); G02B 27/09 (2006.01)
CPC G02B 27/0933 (2013.01) [G02B 27/48 (2013.01)] 22 Claims
OG exemplary drawing
 
1. Optical device (1), comprising:
an optical element (21) configured to interact with a light beam (L) when the light beam impinges on the optical element (21),
a support structure (3) configured to support the optical element (21),
at least one elastic member (600, 90) connected to the support structure (3) and to the optical element (21), so that the optical element (21) is movable with respect to the support structure (3),
an actuator (5) configured to move the optical element (21) by means of a Lorentz force, wherein the actuator (5) comprises a first coil (60) and a second coil (61), wherein each coil comprises multiple windings, wherein the windings of the respective coil (60, 61) extend around a winding axis (W) of the respective coil (60, 61), wherein said coils (60, 61) are integrated into the support structure (3), and wherein the actuator (5) comprises a first magnet (70) facing the first coil (60) and a second magnet (71) facing the second coil (61), wherein the first and the second magnet (70, 71) are connected to the optical element (21), and wherein the magnets (70, 71) each comprise a magnetization (M1, M2) oriented at an angle (α) between 80° and 100° with respect to a plane extending perpendicular to the winding axes (W) of the coils (60, 61),
wherein the at least one elastic member is a first spring structure (600) connected to the front side (3a) of the support structure (3), wherein the first spring structure (600) comprises a first frame (607) to which the optical element (21) is connected, wherein the first frame is tiltable about a first axis (A) with respect to the support frame (3), and wherein the actuator is configured to tilt the optical element about the first axis (A), and wherein the first spring structure (600) comprises a first holding member (602) that is connected via a first torsion bar (601) to the first frame (607), and wherein the first spring structure (600) comprises a second holding member (604) that is connected via a second torsion bar (603) to the first frame (607), wherein the first holding member (602) is connected to the third arm (352) of the support frame (3) on the front side of the support frame (3) and wherein the second holding member (604) is connected to the fourth arm (353) of the support frame (3) on the front side of the support frame (3), wherein particularly the first torsion bar (601) and the second torsion bar (602) are aligned with the first axis (A).