System and Method to Eliminate Incident Light Reflection from Displays in Cameras
AssigneeDell Products L.P.
InventorsGhee Beng Ooi, Chih-Hao Kao, Tiak Hooy Sim
Life of this patent
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Abstract
Described are systems and methods to eliminate reflection from a display's incident light that is captured by a camera, such as a webcam. The display includes a polarizer that polarizes light which is reflected by a medium such as glass to the camera. The reflected light includes linearly polarized light. A polarizer is strategically placed in front of the lens set of a camera. Utilizing an orientation perpendicular to the reflected incident light, reflection from the reflective surfaces is eliminated before it enters the lens set of the camera.
Claims20
An information handling system (IHS) comprising:
- a display that includes a stack-up of layers, wherein a top layer is a polarizer from which light is transmitted from the display;
- and
- a camera that receives incident light, including linearly polarized light, from the light transmitted from the display, that includes a polarizer that is 90 degrees or perpendicular in polarity to the polarizer of the display, that cancels the linearly polarized light.
4 The IHS of claim 1, wherein the camera is a webcam.
A camera connected to an information handling system (IHS) comprising:
- a lens;
- a polarizer placed in front of the lens to receive incident light transmitted that includes linearly polarized light, from a display that comprises a top layer polarizer from which the light is polarized, wherein the polarizer is 90 degrees or perpendicular in polarity to the top layer polarizer, the polarizer cancels linearly polarized light.
A computer-implementable method for eliminating reflection from incident light captured by an information handling system (IHS) camera comprising:
- determining polarity of a polarizer which polarizes transmitted light from a display connected to the IHS;
- providing a polarizer in front of the camera that is 90 degrees or perpendicular to the polarity of the polarizer which polarizes transmitted light from the display;
- receiving by the polarizer in front of the camera, reflected linearly polarized incident light and diffused incident light;
- and
- processing the reflected linearly polarized incident light and diffused non-polarized incident light to generate images on the display.
Dependencies are inferred from the claim text.