Optical sensor and method for identifying the presence of skin
First Claim
1. A dermatological treatment device comprising:
- an enclosed radiation chamber defined by;
a radiation chamber housing,an output window at a first end of the radiation chamber housing and configured to be placed against a surface;
a radiation source mount located at a second end of the radiation chamber housing opposite the first end,a source of treatment radiation supported by the radiation source mount at the second end of the radiation chamber and configured to emit treatment radiation though the enclosed radiation chamber and out through the output window, the treatment radiation configured to produce a fluence sufficient to provide a dermatological treatment; and
a sensor system comprising;
a sensor radiation source distinct from the source of treatment radiation and configured to emit radiation through the enclosed radiation chamber housing and toward the surface through the same output window, as the treatment radiation, anda sensor detector configured to detect sensor radiation emitted by the sensor radiation source and remitted by the surface,wherein the sensor radiation source and the sensor detector are arranged in openings defined in the radiation chamber, andwherein the sensor system configured to;
measure radiation remitted via the surface; and
control delivery of treatment radiation to the surface based on the measured remitted radiation.
3 Assignments
0 Petitions
Accused Products
Abstract
A sensor for detecting the presence of skin is disclosed, one configuration of which uses multiple light emitting diodes, each of a unique wavelength band, and a broad-band photodetector to measure the remission of light at multiple wavelengths from a material being analyzed. Characteristics of the spectral remission of the material are used to discriminate human skin from materials that are not human skin. Further, an aesthetic medical device utilizing such a sensor in which the device is inhibited from operation if skin has not been detected. The incorporation of a skin sensor improves the safety of devices that emit radiation that otherwise would pose a hazard if not directed onto skin.
274 Citations
20 Claims
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1. A dermatological treatment device comprising:
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an enclosed radiation chamber defined by; a radiation chamber housing, an output window at a first end of the radiation chamber housing and configured to be placed against a surface; a radiation source mount located at a second end of the radiation chamber housing opposite the first end, a source of treatment radiation supported by the radiation source mount at the second end of the radiation chamber and configured to emit treatment radiation though the enclosed radiation chamber and out through the output window, the treatment radiation configured to produce a fluence sufficient to provide a dermatological treatment; and a sensor system comprising; a sensor radiation source distinct from the source of treatment radiation and configured to emit radiation through the enclosed radiation chamber housing and toward the surface through the same output window, as the treatment radiation, and a sensor detector configured to detect sensor radiation emitted by the sensor radiation source and remitted by the surface, wherein the sensor radiation source and the sensor detector are arranged in openings defined in the radiation chamber, and wherein the sensor system configured to; measure radiation remitted via the surface; and control delivery of treatment radiation to the surface based on the measured remitted radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A dermatological treatment device comprising:
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a source of treatment radiation and positioned to deliver radiation through a treatment radiation chamber and through a unitary outlet window configured to be placed against a surface; and a sensor system for analyzing a surface for treatment by a dermatological treatment device, the sensor system comprising; one or more emitters configured to emit radiation onto a surface; one or more detectors configured to receive radiation remitted via the surface; a processor configured to; measure the received remitted radiation in at least one wavelength band; determine at least one spectral remittance of the surface based on the measured remitted radiation in the at least one wavelength band; compare the at least one spectral remittance of the surface with at least one reference spectral remittance; and control the dermatological treatment device based on the measured remitted radiation, wherein the one or more emitters of the sensor system are distinct from the source of treatment radiation and arranged to emit sensor system radiation through an annular sensor system chamber extending around the treatment radiation chamber and physically separated from the treatment radiation chamber by an annular wall, and wherein the unitary outlet window extends over an outlet end of the annular sensor system chamber, such that the sensor system radiation is emitted through the same unitary outlet window as the treatment radiation. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification