US 12,070,185 B2
Observation device and method of operating an observation device
Harald Baumann, Tuttlingen (DE); Benjamin Häsler, Tuttlingen (DE); Marcel Hofstetter, Tuttlingen (DE); and Hans-Georg Mathe, Tuttlingen (DE)
Assigned to KARL STORZ SE & CO KG, Tuttlingen (DE)
Filed by KARL STORZ SE & Co KG, Tuttlingen (DE)
Filed on Jul. 31, 2020, as Appl. No. 16/944,704.
Claims priority of application No. 102019121434.3 (DE), filed on Aug. 8, 2019.
Prior Publication US 2021/0044754 A1, Feb. 11, 2021
Int. Cl. A61B 1/00 (2006.01); A61B 1/05 (2006.01); H04N 23/50 (2023.01); H04N 23/69 (2023.01)
CPC A61B 1/00096 (2013.01) [A61B 1/000094 (2022.02); A61B 1/00045 (2013.01); A61B 1/00174 (2013.01); A61B 1/00188 (2013.01); A61B 1/05 (2013.01); H04N 23/69 (2023.01); H04N 23/555 (2023.01)] 20 Claims
OG exemplary drawing
 
1. An observation device, in particular an endoscopic observation system, comprising:
an instrument comprising a shaft having a proximal end and a distal end;
objective optics disposed at the shaft and having a field of view;
an imaging sensor arranged to capture image data, the imaging sensor forming a sensor array composed of evenly distributed sensitive elements; and
an image processing unit,
wherein the objective optics is arranged to project a scene in the field of view to the imaging sensor;
wherein the objective optics includes an objective lens configured to capture a single image, the objective lens being symmetrical with respect to a main axis, the single image having a central imaging region and a peripheral imaging region within the field of view, and wherein a focal length of the central imaging region is different than a focal length of the peripheral imaging region, the focal length of the central imaging region generating a first optical imaging resolution and the focal length of the peripheral imaging region generating a second optical imaging resolution, the first imaging resolution being larger than the second imaging resolution; and
wherein the single image has a peripheral image portion and a central image portion, a resolution of the central image portion being greater than a resolution of the peripheral image portion, and wherein the image processing unit is further configured to expand the peripheral image portion to be a same proportion as the central image portion.