Three dimensional image projector with two color imaging

Patent metadata

Field	Value
Publication number	US-8950869-B2
Application number	US-201213673112-A
Country	US
Kind code	B2
Filing date	Nov 9, 2012
Priority date	Jan 25, 2012
Publication date	Feb 10, 2015
Grant date	Feb 10, 2015

Abstract

A method for projecting a three-dimensional image, that includes providing a first light source and a second light source. A polarizing beam splitter (PBS) is disposed adjacent the first light source and the second light source. An imaging device is adjacent the PBS. A polarization flipping element is disposed adjacent the PBS opposite the imaging device, and a mirror is disposed adjacent the polarization flipping element. A first light is emitted from the first light source. The first light is polarized such that it reflects through the PBS to a polarization flipping element. The first light passes through the polarization flipping element twice such that it will reach the surface of the imaging device. The second light is emitted from the second light source after the first light is emitted. The second light is polarized such that the light passes through the PBS to the imaging device.

First claim

What is claimed is:

1. A method for projecting an image comprising:
providing a first light source and a second light source;
providing a beam splitter device (PBS) adjacent the first light source and the second light source;
providing an imaging device adjacent the PBS;
providing a polarization flipping element adjacent the PBS, opposite the imaging device;
providing a minor adjacent the polarization flipping element;
emitting a first light from the first light source;…

Assignees

• IBM

Inventors

• Decusatis Casimer M

Classifications

• H04N13/337

  Electricity · mapped topic

• G02B27/1026 Primary

  Physics · mapped topic

• G03B35/26 Primary

  Physics · mapped topic

• G03B35/16

  Physics · mapped topic

• H04N13/363

  Electricity · mapped topic