US 12,253,744 B2
Optical device, particularly for tuning the focal length of a lens of the device by means of optical feedback
Manuel Aschwanden, Allenwinden (CH); David Niederer, Kuttigen (CH); Roman Patscheider, Winterthur (CH); Daniel Borer, Schlieren (CH); Christopher Laning, Windisch (CH); and Michael Bueeler, Vogelsang (CH)
Filed by Optotune AG, Dietikon (CH)
Filed on Jun. 14, 2020, as Appl. No. 16/900,927.
Application 16/900,927 is a division of application No. 15/316,159, granted, now 10,684,495, previously published as PCT/EP2015/062462, filed on Jun. 3, 2015.
Claims priority of application No. 14170996 (EP), filed on Jun. 3, 2014.
Prior Publication US 2020/0379275 A1, Dec. 3, 2020
Int. Cl. G02C 7/00 (2006.01); G02B 3/14 (2006.01); G02B 7/32 (2021.01); G02B 26/00 (2006.01); G02C 7/04 (2006.01); G02C 7/08 (2006.01); G02B 27/40 (2006.01)
CPC G02C 7/085 (2013.01) [G02B 3/14 (2013.01); G02B 7/32 (2013.01); G02B 26/004 (2013.01); G02C 7/041 (2013.01); G02B 27/40 (2013.01); G02C 7/081 (2013.01)] 4 Claims
OG exemplary drawing
 
1. Glasses for vision correction, wherein the glasses (1) are configured to be worn in front of an eye (300) of a user, wherein the glasses comprise:
a lens (10) comprising a deformable membrane and a fluid, wherein the lens is configured to be arranged in front of said eye (300) of the user and comprises an actuator to be controlled so as to adjust the focal length (f) of the lens (10), wherein the actuator comprises a coil interacting with a magnet, and wherein the glasses (1) further comprise a light source (50) for emitting light (51) and a photosensitive element (30) for detecting emitted light (51) and for providing an output signal depending on the intensity of the emitted light (51) that impinges onto the photosensitive element (30), wherein said light source (50) and said photosensitive element (30) are configured such that light emitted (51) by the light source (50) is reflected by the lens (301) of said eye (300) of the user or by the retina (300b) of said eye (300) of the user or by the cornea (300c) of said eye (300) of the user before impinging onto said photosensitive element (30).