Indicator for a robotic machine

  • US 6,774,596 B1
  • Filed: 11/09/2001
  • Issued: 08/10/2004
  • Est. Priority Date: 05/28/1999
  • Status: Expired due to Fees
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First Claim
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1. A robotic machine comprising a plurality of sensors by which the robotic machine can interact with its environment, a controller for controlling the machine to carry out a task using the sensors, and an indicator light to indicate a state of interaction between the machine and the environment,wherein the controller is configured to change a color of the light according to the state of interaction and wherein the indicator light comprises two or more differently colored light sources which are separately energizable and a device for combining light output by the light sources to give an effect of a single colored light.

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