Autostereoscopic display that provides a 3-dimensional visual impression

• US 9,063,338 B2
• Filed: 03/09/2010
• Issued: 06/23/2015
• Est. Priority Date: 11/11/2009
• Status: Active Grant

• Current Assignee: Helmholtz Zentrum München Deutsches Forschungszentrum für. Gesundheit und Umwelt (GmbH)
• Original Assignee: Helmholtz Zentrum München Deutsches Forschungszentrum für. Gesundheit und Umwelt (GmbH)
• Inventors: Hoeschen, Christoph, Tischenko, Oleg, Klaften, Matthias, Kroker, Lars, Scholles, Michael, Knobbe, Jens
• Primary Examiner(s): SHERMAN, STEPHEN G
• Application Number:
  US13/509,501
• Publication Number:
  US 20120262502A1
• Time in Patent Office: 1,932 Days
• Field of Search: 345/102
• US Class Current: 1/1
• CPC Class Codes: G02B 30/24 involving temporal multiplexing, e.g. using sequentially activated left and right shutters
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: H04N 13/305 using lenticular lenses, e.g. arrangements of cylindrical lenses
• CPC Class Codes: H04N 13/32 using arrays of controllable light sources; using moving apertures or moving light sources

Abstract

An autostereoscopic display includes a background illumination with a multiplicity of parallel light strip groups with in each case at least two parallel light strips, wherein the individual light strip groups are arranged next to one another with a first grid dimension, and a lens grid arranged before the background illumination and has a multiplicity of parallel lens strips, wherein the lens strips are arranged next to one another with a second grid dimension, as well as a light modulator arranged before the lens grid and displays image information.

Claims

1. An autostereoscopic display comprising:

a) a background illumination with a plurality of parallel light strip groups with in each case at least two parallel light strips, wherein the individual light strip groups are arranged next to one another with a first grid dimension, and one or two of the light strips of the background illumination being longer than the other light strips and protruding from the background illumination in the longitudinal direction to facilitate adjustment of a lens grid relative to the background illumination,

b) the lens grid arranged in a beam path before the background illumination and having a plurality of parallel lens strips, wherein the lens strips are arranged next to one another with a second grid dimension, wherein the first grid dimension of the background illumination differs from the second grid dimension of the lens grid, and

c) a light modulator arranged in the beam path before the lens grid and displaying image information.

2. The autostereoscopic display according to claim 1, wherein

a) the individual light strip groups of the background illumination each have a central axis,

b) the individual lens strips of the lens grid each have one optical axis, and

c) a selected offset exists between the optical axis of the lens strips and the central axis of the light strip groups.

3. The autostereoscopic display according to claim 2, including at least one of:

a) the offset between the optical axis of the lens strips and the central axis of the light strip groups increases outwardly from the display center to the display edges, and

b) the offset between the optical axis of the lens strips and the central axis of the light strip groups in the display center is minimal.

4. The autostereoscopic display according to claim 2, wherein the offset between the optical axis of the lens strips and the central axis of the light strip groups is dimensioned such that the different light strip groups illuminate the same region in the viewing plane, independently of their position within the display.

5. The autostereoscopic display according to claim 1, including at least one of:

a) the longer light strip used for adjustment facilitation is arranged in the display center, and

b) a longer light strip is arranged externally on each of the edges of the background illumination for adjustment facilitation.

6. The autostereoscopic display according to claim 1, wherein

a) a plurality of conductor rails are provided to supply electricity to the light strips, and

b) the light strips used for adjustment facilitation and the remaining light strips are supplied with electricity by separate conductor rails, and

c) the conductor rails for electricity supply of the light strips used for adjustment facilitation have a smaller cross section than the conductor rails for electricity supply of the remaining light strips.

7. The autostereoscopic display according to claim 1, including at least one of:

a) the background illumination is divided into a plurality of regions which can be controlled separately from one another, and

b) various regions of the background illumination are four quadrants.

8. The autostereoscopic display according to claim 1, wherein each of the light strip groups contains a plurality of pairs of light strips each to give a plurality of viewers an autostereoscopic visual impression at the same time.

9. The autostereoscopic display according to claim 1, wherein

a) a controller is provided to control the background illumination and the light modulator,

b) the controller controls the background illumination and the light modulator in a time-synchronized manner,

c) the controller controls the light modulator such that the light modulator displays different images for the two eyes of the viewer in a time-sequential manner, and

d) the controller activates different light strips of the individual light strip groups in the background illumination in a time-sequential manner, which light strips illuminate the two eyes of the viewer in a time-sequential manner.

10. The autostereoscopic display according to claim 1, including at least one of:

a) the light modulator is an LCD display, and

b) the background illumination is an OLED illumination.