US 11,914,251 B2 · Light modulation device for a display for representing two- and/or three-dimensional image content

Abstract

The invention relates to a light modulation device for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device comprises a light modulator and a controller. The phase and/or the amplitude of a light wave field, which is substantially collimated, can be varied by means of the light modulator depending on the location of the light modulator. The light modulator can be actuated by means of the control device. According to the invention, in the direction of propagation of the light wave field, at least one diffracting unit is arranged downstream of the light modulator. The diffracting unit has a variable diffracting structure. By means of the diffracting structure, the light wave field varied by the light modulator can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device.

Claims17

Dependent claims

A liquid crystal light deflection device comprising:

a first electrode structure comprising a plurality of linear electrodes arranged side by side;
a second electrode structure comprising a common electrode facing the first electrode structure,
a liquid crystal layer disposed between the first electrode structure and the second electrode structure to form a saw-tooth profile due to rotation of orientations of liquid crystal molecules according to an electric field between the first electrode structure and the second electrode structure,
the orientations of the liquid crystal molecules in the liquid crystal layer are turned into a defined neutral state by an electric field formed between adjacent linear electrodes within the first electrode structure, before a different diffractive structure is formed by the saw-tooth profile.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

17/711,207Filed 1 Apr 2022 · continuation

Priority

DE 102009027100.723 Jun 2009

Published

US 2022/0229335 A121 Jul 2022

Granted

27 Feb 2024

Term ends

Not estimatedThe source records don’t support an estimate.

Classification23 codes

G02F 1/134309
Electrodes: characterised by their geometrical arrangement
G02B 30/00
Optical systems or apparatus for producing three-dimensional [3d] effects
G02B 30/20
Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images: by providing first and second parallax images…
G02F 1/1347
Constructional arrangements; Manufacturing methods: arrangement of liquid crystal layers or cells in which the final condition of one light beam…

Family

Application61/329,148Us provisional application · filed 29 Apr 2010

PCT/EP2010/058625Parent of this continuation · filed 18 Jun 2010

Application16/901,432Parent of this continuation · filed 15 Jun 2020

Application17/315,949Parent of this continuation · filed 10 May 2021

US 2022/0229335 A1Pre-grant publication · published 21 Jul 2022

US 11,294,246 B2Parent of this continuation

US 11,002,982 B2Parent of this continuation

Application13/126,866Parent of this continuation

US 10,684,489 B2Parent of this continuation

US 2014/0055692 A1Published application

US 2020/0379272 A1Published application

US 2021/0278694 A1Published application

US 11,914,251 B2This patent

From the US filing history. Foreign family members aren’t listed.

Light modulation device for a display for representing two- and/or three-dimensional image content

Life of this patent

Light modulation device for a display for representing two- and/or three-dimensional image content

Life of this patent

Abstract

Claims17