Wide field-of-view stereoscopic projection system

Patent metadata

Field	Value
Publication number	US-2016100157-A1
Application number	US-201514965382-A
Country	US
Kind code	A1
Filing date	Dec 10, 2015
Priority date	Jan 20, 2010
Publication date	Apr 7, 2016
Grant date	—

Abstract

Disclosed embodiments relate to a stereoscopic projection system and methods. An exemplary disclosed projection system includes an optical component disposed between the lenses of a lens arrangement. An exemplary lens arrangement includes a first power group, a second power group, and an aperture stop. In an embodiment, the optical component is disposed between the first power group and the aperture stop. In an exemplary embodiment, the optical component is proximate to the aperture stop. By disposing the optical component closer to or proximate to the aperture stop in the lens arrangement, various benefits may be realized, including improved contrast uniformity.

First claim

What is claimed is:

1 . A projection system operable to provide stereoscopic images, comprising:
a lens arrangement comprising:
a first power group;
a second power group; and
an aperture stop disposed between the first and second power groups; and
an optical component disposed between a first lens of the first power group and a second lens of the second power group.

2 . The projection system of claim 1 , wherein the optical component is disposed between the first power group and the aperture stop.

3 . The projection system of claim 2 , wherein the optical component is adjacent to the aperture stop.

4 . The projection system of claim 2 , further comprising a second optical component disposed between the second power group and the aperture stop.

5 . The projection system of claim 1 , wherein the first power group further comprises a second lens disposed between the aperture stop and the first lens of the first power group, and the optical component is disposed between the first and second lenses of the first power group.

6 . The projection system of claim 5 , wherein the second power group further comprises a second lens disposed between the aperture stop and the first lens of the second power group, the projection system further comprising a second optical component disposed between the first and second lenses of the second power group.

7 . The projection system of claim 6 , further comprising a second optical component between the second power group and the aperture stop.

8 . The projection system of claim 7 , wherein the second optical component is adjacent to the aperture stop.

9 . The projection system of claim 1 , wherein the first power group is a positive power group and the second power group is a negative power group.

10 . The projection system of claim 1 , wherein the first power group is a negative power group and the second power group is a positive power group.

11 . The projection system of claim 1 , wherein the optical component is a modulator.

12 . The projection system of claim 11 , wherein the optical component is a polarization modulator comprising a polarization switch.

13 . The projection system of claim 11 , wherein the optical component is a color modulator.

14 . The projection system of claim 1 , wherein the optical component is a dichroic filter.

15 . A projection system operable to provide stereoscopic images, comprising:
a panel operable to output light along a light path a lens arrangement disposed in the light path, the lens arrangement comprising:
a first power group;
a second power group; and
an aperture stop disposed between the first and second power groups;
an optical component, the optical component disposed in the light path between a first lens of the first power group and a second lens of the second power group; and a projection screen operable to receive light provided by the lens arrangement along the light path.

16 . The projection system of claim 15 , wherein the optical component is disposed between the first power group and the aperture stop.

17 . The projection system of claim 16 , wherein the optical component is adjacent to the aperture stop.

18 . The projection system of claim 15 , the system further comprising:
a second lens arrangement operable to receive light from the panel along a second light path, the lens arrangement comprising:
a first power group;
a second power group; and
an aperture stop disposed between the first and second power groups of the second lens arrangement; and
a second optical component, the second optical component disposed in the second light path between a first lens of the first power group of the second lens arrangement and a second lens of the second power group of the second lens arrangement; wherein the projection screen is operable to receive light provided from the second lens arrangement along the second light path.

19 . A method of projecting stereoscopic images on a screen, comprising:
providing a light panel; directing light from the light panel through a lens arrangement and an optical component, and directing light exiting the lens arrangement to toward the screen; wherein the lens arrangement comprises
a first power group;
a second power group; and
an aperture stop disposed between the first and second power groups; and
wherein the optical component is disposed between a first lens of the first power group and a second lens of the second power group.

20 . The projection system of claim 19 , wherein the optical component is disposed between the first power group and the aperture stop.

21 . The projection system of claim 20 , wherein the optical component is adjacent to the aperture stop.

Assignees

• Reald Inc

Inventors

• Schuck Miller H
• Robinson Michael G
• Sharp Gary D

Classifications

• H04N13/337

  using polarisation multiplexing · CPC title

• H04N13/334

  using spectral multiplexing · CPC title

• G02B30/25

  using polarisation techniques · CPC title

• H04N13/363 Primary

  using image projection screens (volumetric display H04N13/388) · CPC title

• G03B21/14

  Details · CPC title