The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 2021
Filed:
Mar. 22, 2019
Bsh Hausgeraete Gmbh, Munich, DE;
Klaus Wammes, Bechtheim, DE;
BSH Hausgeraete GmbH, Munich, DE;
Abstract
An optical arrangement includes at least the following components which are arranged along an optical axis: a light source for polarized light; a layer arrangement, which, viewed in the viewing direction of a viewer, includes at least one polarization filter and an optical retardation layer behind the polarization filter. The polarization filter abuts the retardation layer free of gaps. An interstice is located between the light source and the layer arrangement. The interstice has a volume about the optical axis, that is surrounded by optically impermeable and internally non-reflecting, but absorbent peripheral surfaces. In the interstice, there is at least one semi-permeable boundary surface which is permeable to the light emitted by the light source and is at least partially reflective for light that is incident in the opposite direction.