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:
Jul. 01, 2025
Filed:
Jun. 06, 2022
Ledil Oy, Salo, FI;
Olli Saarnio, Salo, FI;
LEDIL OY, Salo, FI;
Abstract
An optical device includes a first optical element and a second optical element moveable with respect to the first optical element. The first optical element includes a first surface for modifying a distribution of light exiting the first optical element, and the second optical element includes a second surface facing towards the first surface and for further modifying the distribution of the light. One of the first and second surfaces includes convex areas whereas the other one of these surfaces includes concave areas. An optical effect of the optical device is changeable by moving the second optical element with respect to the first optical element in a direction parallel with the first surface. The first and second surfaces are shaped to have stepwise shape discontinuities to reduce a spatial room needed between the first and second surfaces.