EP 3375254 A1 20180919 - APPARATUS AND METHOD FOR PROJECTING LIGHT THROUGH A LIGHT DISPERSIVE MEDIUM
Title (en)
APPARATUS AND METHOD FOR PROJECTING LIGHT THROUGH A LIGHT DISPERSIVE MEDIUM
Title (de)
VORRICHTUNG UND VERFAHREN ZUM PROJIZIEREN VON LICHT DURCH EIN LICHTZERSTREUENDES MEDIUM
Title (fr)
APPAREIL ET PROCÉDÉ DE PROJECTION DE LUMIÈRE DANS UN MILIEU DISPERSIF DE LUMIÈRE
Publication
Application
Priority
- GB 201520076 A 20151113
- GB 2016053549 W 20161111
Abstract (en)
[origin: GB2544337A] The apparatus comprises a light modifier (14) for modifying the characteristics of incident light (26) before it reaches the medium (28), a controller for the light modifier (14), and a detector (24) for detecting an intensity of light backscattered (40) by the medium. The backscattered light arises from an interaction between the incident light and the medium, and may comprise light having a frequency which is equal to, or a harmonic of, a frequency of the incident light. The detector provides a feedback signal for the light modifier that is dependent on the intensity of backscattered light detected, and the controller is configured to determine the modification of at least one characteristic of the incident light that is applied by the light modifier using an optimisation algorithm having the feed back signal as a parameter. The light modifier may alter the instantaneous phase of the incident light or apply a phase shift to the incident light. The invention allows an image to be focused through a light dispersive medium by compensating for scattering or diffuse reflection.
IPC 8 full level
H05B 44/00 (2022.01); G02B 26/06 (2006.01); G02B 26/08 (2006.01); H01S 3/067 (2006.01); H05B 37/02 (2006.01)
CPC (source: EP GB)
A61B 5/0059 (2013.01 - EP); A61B 5/1104 (2013.01 - EP); A61B 5/4362 (2013.01 - EP); A61B 8/0866 (2013.01 - EP); G01N 21/47 (2013.01 - GB); G01N 21/4795 (2013.01 - EP); G02B 26/06 (2013.01 - GB); G05D 25/02 (2013.01 - GB); A61B 8/483 (2013.01 - EP); G01N 21/49 (2013.01 - EP); G01N 2021/4709 (2013.01 - GB); G02B 26/0833 (2013.01 - EP)
Citation (search report)
See references of WO 2017081482A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
GB 201520076 D0 20151230; GB 2544337 A 20170517; EP 3375254 A1 20180919; WO 2017081482 A1 20170518
DOCDB simple family (application)
GB 201520076 A 20151113; EP 16797624 A 20161111; GB 2016053549 W 20161111