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:
Mar. 07, 2023
Filed:
Oct. 11, 2019
Koninklijke Philips N.v., Eindhoven, NL;
Rifat Ata Mustafa Hikmet, Eindhoven, NL;
Ties van Bommel, Eindhoven, NL;
Thomas Caspar Kraan, Eindhoven, NL;
Leon Hendrikus Christiaan Kusters, Eindhoven, NL;
Siebe Tjerk DeZwart, Eindhoven, NL;
Oscar Hendrikus Willemsen, Eindhoven, NL;
Marcellinus Petrus Carolus Michael Krijn, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A beam shaping device () comprising first () and second () optically transparent substrates, a liquid crystal layer () sandwiched there between, and first () and second () electrodes arranged on a side of the liquid crystal layer () facing the first substrate (). The beam shaping device () is controllable between beam-shaping states, each permitting passage of light through the beam-shaping device in a direction perpendicular thereto. The beam shaping device () is configured in such a way that application of a voltage (V) across the first () and second () electrodes results in an electric field having a portion essentially parallel to the liquid crystal layer () in a segment thereof between neighboring portions of the electrodes () and extending substantially from the first substrate () to the second () substrate. In this way a relatively high refractive index gradient can be obtained across short distances, which enables a very efficient beam shaping. The electric field can be achieved by utilizing electrodes provided on one side of the liquid crystal layer, in a so-called in-plane configuration. The device can be used in an autostereoscopic display device, for switching between 2D and 3D modes.