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Apparatus and method for irradiating a surface with light

  • US 10,357,662 B2
  • Filed: 02/19/2009
  • Issued: 07/23/2019
  • Est. Priority Date: 02/19/2009
  • Status: Active Grant
First Claim
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1. An apparatus for irradiating a portion of a patient'"'"'s scalp with light, the apparatus comprising:

  • a housing configured to house a portion of a source of light comprising one or more wavelengths in a range of between 630 nanometers to about 1064 nanometers;

    a chassis mechanically coupled to the housing via a pivot;

    an output optical element in optical communication with the source such that a path traveled by light from the source includes a non-zero angle, wherein the output optical element comprises an emission surface configured to emit a light beam having a cross-sectional area greater than about 2 cm2 at the emission surface of the output optical element and having a time-averaged irradiance in a range of between 10 mW/cm2 to about 10 W/cm2 across the cross-sectional area;

    a thermally conductive portion coupled to the chassis and configured to be placed in thermal communication with the irradiated portion of the patient'"'"'s scalp and to remove heat from the irradiated portion of the patient'"'"'s scalp, wherein the apparatus is configured to have the thermally conductive portion move toward the housing of the apparatus via movement of the chassis about the pivot upon a pressure being applied to the thermally conductive portion above a predetermined threshold pressure in a direction of movement of the thermally conductive portion toward the housing of the apparatus; and

    a sensor configured to respond to the movement of the thermally conductive portion relative to the housing of the apparatus by generating a signal indicative of the movement, wherein the predetermined threshold pressure is sufficient to have the thermally conductive portion in thermal communication with the portion of the patient'"'"'s scalp.

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