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Light irradiation method for varying a perceived brightness

  • US 6,285,134 B1
  • Filed: 10/04/1999
  • Issued: 09/04/2001
  • Est. Priority Date: 10/05/1998
  • Status: Expired due to Fees
First Claim
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1. A light irradiation method using a sub irradiation section emitting sub illumination light and a main irradiation section for providing main light, the main irradiation section defining a target,wherein the sub irradiation section emits sub illumination light to or from at least one of a background and a neighborhood of the target, the method comprising the step of:

  • performing time-wise control of an intensity of the sub illumination light emitted by the sub irradiation section so that a perceived brightness of the target is varied.

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