Apparatus and method for the precision application of cosmetics
First Claim
1. A device for selectively applying a reflectance modifying agent to an area of skin while guided over the area of skin, the device comprising:
- an applicator, the applicator being operable to selectively apply one or more reflectance modifying agents to frexels of the area of skin;
one or more sensors, the one or more sensors being responsive to illumination of areas of skin; and
a computer that is coupled to the applicator and the one or more sensors, and that is operable to perform operations comprising;
determining attributes of a plurality of frexels in the area of skin based on input provided by the one or more sensors;
identifying a range of spatial frequencies within the area of skin;
differentiating between at least one middle spatial frequency feature and at least one high spatial frequency feature in the area of skin based on the attributes, the at least one middle spatial frequency feature being below a threshold corresponding to less than 40 percent of the range of the spatial frequencies and the at least one high spatial frequency feature being above the threshold;
determining a desired amount of a highly differentiated reflectance modifying agent (RMA) to apply to the middle spatial frequency feature, the highly differentiated RMA being an RMA that has a higher luminance than the area of skin;
determining deposition control parameters based on the desired amount; and
instructing the applicator to selectively deposit the highly differentiated RMA to the at least one middle spatial frequency feature in the area of skin based on the deposition control parameters to provide a layer of the highly differentiated RMA that attenuates reflection from the at least one middle spatial frequency feature without attenuating the at least one high spatial frequency feature in the area of skin, such that a first percentage of the area of skin with attenuated reflection is smaller than a second percentage of the area of skin without attenuated reflection.
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Accused Products
Abstract
One or more reflectance modifying agent (RMA) such as a pigmented cosmetic agent is applied selectively and precisely with a controlled spray to human skin according to local skin reflectance or texture attributes. One embodiment uses digital control based on the analysis of camera images. Another embodiment, utilizes a calibrated scanning device comprising a plurality of LEDs and photo diode sensors to correct reflectance readings to compensate for device distance and orientation relative to the skin. Ranges of desired RMA application parameters of high luminance RMA, selectively applied to middle spatial frequency features, at low opacity or application density are each significantly different from conventional cosmetic practice. The ranges are complementary and the use of all three techniques in combination provides a surprisingly effective result which preserves natural beauty while applying a minimum amount of cosmetic agent.
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Citations
16 Claims
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1. A device for selectively applying a reflectance modifying agent to an area of skin while guided over the area of skin, the device comprising:
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an applicator, the applicator being operable to selectively apply one or more reflectance modifying agents to frexels of the area of skin; one or more sensors, the one or more sensors being responsive to illumination of areas of skin; and a computer that is coupled to the applicator and the one or more sensors, and that is operable to perform operations comprising; determining attributes of a plurality of frexels in the area of skin based on input provided by the one or more sensors; identifying a range of spatial frequencies within the area of skin; differentiating between at least one middle spatial frequency feature and at least one high spatial frequency feature in the area of skin based on the attributes, the at least one middle spatial frequency feature being below a threshold corresponding to less than 40 percent of the range of the spatial frequencies and the at least one high spatial frequency feature being above the threshold; determining a desired amount of a highly differentiated reflectance modifying agent (RMA) to apply to the middle spatial frequency feature, the highly differentiated RMA being an RMA that has a higher luminance than the area of skin; determining deposition control parameters based on the desired amount; and instructing the applicator to selectively deposit the highly differentiated RMA to the at least one middle spatial frequency feature in the area of skin based on the deposition control parameters to provide a layer of the highly differentiated RMA that attenuates reflection from the at least one middle spatial frequency feature without attenuating the at least one high spatial frequency feature in the area of skin, such that a first percentage of the area of skin with attenuated reflection is smaller than a second percentage of the area of skin without attenuated reflection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification