US 12,307,007 B2
Method for a pupil detection and/or pupil tracking, optical system and smart glasses
Johannes Meyer, Magstadt (DE); and Johannes Fischer, Pliezhausen (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Feb. 27, 2023, as Appl. No. 18/174,836.
Claims priority of application No. 10 2022 202 208.4 (DE), filed on Mar. 4, 2022.
Prior Publication US 2023/0288986 A1, Sep. 14, 2023
Int. Cl. G06F 3/01 (2006.01); A61B 3/103 (2006.01); G02B 5/32 (2006.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01)
CPC G06F 3/013 (2013.01) [G02B 27/0093 (2013.01); G02B 27/017 (2013.01); A61B 3/103 (2013.01); G02B 5/32 (2013.01); G02B 2027/0178 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for a pupil detection and/or pupil tracking using an evaluation of a speckle pattern back-reflected by an eye of a light of an infrared laser irradiated into the eye, the method comprising:
scanning at least the light of the infrared laser into the eye via a holographic optical element (HOE) that includes different refractive structures, the different refractive structures being configured in such a way that each generates a different visual defect correction; and
evaluating the speckle pattern back-reflected by the eye of the light of the infrared laser scanned into the eye.