US 12,339,453 B2
Optical system for a virtual retinal scan display, and method for projecting image content onto a retina
Andrea Marchini, Kusterdingen (DE); Andreas Petersen, Eningen (DE); Christian Nitschke, Kusterdingen (DE); Eva Lea Elisabeth Empting, Kuesnacht (CH); Gael Pilard, Wankheim (DE); Hendrik Specht, Pliezhausen (DE); Joerg Carls, Altdorf (DE); Johannes Hofmann, Tuebingen (DE); Maximilian Busch, Eningen Unter Achalm (DE); Sebastian Reiss, Reutlingen (DE); Simon Pick, Tuebingen (DE); Tadiyos Alemayehu, Pfullingen (DE); and Thomas Kuenstle, Reutlingen (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Feb. 16, 2022, as Appl. No. 17/672,909.
Claims priority of application No. 10 2021 104 528.2 (DE), filed on Feb. 25, 2021.
Prior Publication US 2022/0269088 A1, Aug. 25, 2022
Int. Cl. G02B 27/01 (2006.01); G02B 27/00 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 27/0093 (2013.01); G02B 2027/011 (2013.01); G02B 2027/0147 (2013.01); G02B 2027/0178 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical system for a virtual retinal scan display, comprising:
a. an image source configured to supply an image content in the form of image data;
b. an image processing device for the image data;
c. a projector unit having a light source able to be modulated in time for generating at least one light beam, and having an actuable refraction device for the at least one light beam for a scanning projection of the image content;
d. a deflection unit onto which the image content is able to be projected and which is configured to guide the projected image content onto an eye of a user; and
e. an adaptive optical element configured to modify a beam divergence, which is situated in an optical path of the light beam between the light source and the deflection unit, wherein the adaptive optical element is able to be actuated so that a beam divergence of the light beam is variable as a function of an angle of incidence of the light beam on the deflection unit,
wherein the image processing device configured to generate, from the image data of the image source, sub-image data which allow for a simultaneous projection of N×M sub-images having essentially the same image content.