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Lighting apparatus

  • US 10,171,780 B2
  • Filed: 12/15/2015
  • Issued: 01/01/2019
  • Est. Priority Date: 12/26/2014
  • Status: Active Grant
First Claim
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1. A lighting apparatus comprising:

  • an illuminator configured to emit illumination light;

    a projector configured to emit image-projecting light for projecting an image; and

    a sensor configured to emit operation-detecting emission light used for operation detection, and to detect an operation by an operation object in a range including an image projection area of the projector,wherein the illumination light, the image-projecting light, and the operation-detecting emission light have respective different wavelength distribution characteristics,regarding a light amount in a wavelength range of light used by the sensor for the operation detection, a light amount of the operation-detecting emission light is the largest among those of the illumination light, the image-projecting light, and the operation-detecting emission light,the projector has an optical filter configured to cut off or to reduce a wavelength in a non-visible light range, the optical filter being disposed at any position on such an optical path in which light from a light source becomes the image-projecting light,the illuminator has an optical filter configured to cut off or to reduce a wavelength in the non-visible light range before light emitted from an illumination light source becomes the illumination light, andthe lighting apparatus further comprises;

    a controller configured to set a virtual switch area in an illumination area of the operation-detecting emission light and at a position outside an image projection area of the projector, and to control execution of a given process when the sensor detects an operation by the operation object with respect to the virtual switch area; and

    the controller is further configured to control, in setting the position of the virtual switch area, a display for a setting guide expression for a user in the image projection area of the projector so that the position of the virtual switch area can be set at a position intended by the user outside the image projection area of the projector.

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