US 12,464,108 B1
Display having controllable laser light sources and controllable light guide
Petri Savolainen, Espoo (FI); Urho Konttori, Helsinki (FI); Mikko Strandborg, Hangonkylä (FI); and Mikko Juhola, Muurla (FI)
Assigned to Distance Technologies Oy, Helsinki (FI)
Filed by Distance Technologies Oy, Helsinki (FI)
Filed on Feb. 4, 2025, as Appl. No. 19/045,027.
Int. Cl. H04N 13/344 (2018.01); G02B 27/01 (2006.01); H04N 13/324 (2018.01); H04N 13/383 (2018.01)
CPC H04N 13/344 (2018.05) [G02B 27/0101 (2013.01); H04N 13/324 (2018.05); H04N 13/383 (2018.05); G02B 2027/0112 (2013.01); G02B 2027/013 (2013.01); G02B 2027/0187 (2013.01); G02B 2207/101 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a plurality of laser light sources of at least two different colours;
at least one light guide comprising a light inlet and a light outlet, the light outlet comprising a plurality of exit portions, wherein the light inlet is arranged to receive light rays emitted by the plurality of laser light sources, and wherein the at least one light guide is controllable to sequentially guide the light rays towards different exit portions of the light outlet; and
a processor configured to:
obtain an image to be displayed via the display device; and
display the image via the display device for producing a synthetic light field, wherein when displaying the image, the processor is configured to display a given pixel of the image by:
(i) determining a given exit portion of the light outlet corresponding to the given pixel, based on a pixel location of the given pixel in the image;
(ii) controlling the plurality of laser light sources to emit light rays having a colour and an intensity representative of the given pixel, based on intensity values of different colour components of the given pixel in the image; and
(iii) controlling the at least one light guide to guide said light rays towards the given exit portion from which the light rays exit.