FR3128121A1 - PHOTONIC STRUCTURE FOR THE DYNAMIC EXPRESSION OF COLORS AND EFFECTS - Google Patents

Abstract

PHOTONIC STRUCTURE FOR THE DYNAMIC EXPRESSION OF COLORS AND EFFECTS A photochromic formulation consists of a core material and a photochromic layer covering the core material and forming a particle. The photochromic layer may comprise a plurality of photochromic materials, in particular a first photoreactive pigment characterized by a reversible diffuse reflectance at a first central wavelength in response to irradiation by photons of a first characteristic wavelength, a second photoreactive pigment characterized by reversible diffuse reflectance at a second center wavelength in response to irradiation by photons of a second characteristic wavelength, and a third photoreactive pigment characterized by reversible diffuse reflectance at a third center wavelength central wave and a fourth central wavelength in response to irradiation by photons of a third characteristic wavelength. Figure for abstract: 1

Description

PHOTONIC STRUCTURE FOR THE DYNAMIC EXPRESSION OF COLORS AND EFFECTS

SUMMARY

Methods, systems and materials for integrated photochromic cosmetic application are disclosed. A photochromic formulation can be or include a core material and a photochromic layer covering the core material and forming a particle centered around the core material.

In some embodiments, the photochromic layer may be or include a plurality of photochromic materials, including a first photoreactive pigment characterized by reversible diffuse reflectance at a first center wavelength of 490 nm to 520 nm in response to irradiation by photons of a first characteristic wavelength. The photochromic layer may include a second photoreactive pigment characterized by reversible diffuse reflectance at a second central wavelength of 570 nm to 590 nm in response to irradiation by photons of a second characteristic wavelength. The photochromic layer may also include a third photoreactive pigment characterized by reversible diffuse reflectance at a central third wavelength of 450 nm to 495 nm and a central fourth wavelength of 625 nm to 740 nm in response to irradiation by photons of a third characteristic wavelength. The first characteristic wavelength, the second characteristic wavelength and the third characteristic wavelength may be the same or different.

In some embodiments, the first photoreactive pigment can be or include 1,2-bis(2-methyl-5-phenyl-3-thienyl)-3,3,4,4,5,5-hexafluorocyclopentene. The second photoreactive pigment can be or include 1,2-bis(2-methyl-5-phenyl-3-thienyl)-3,3,4,4,5,5-hexafluorocyclopentene. The third photoreactive pigment can be or include 1,2-bis(3-methylbenzo(b)thiophen-2-yl)perfluorocyclopentene. The photochromic layer can be or include spiropyrans, spirooxazines, diarylethenes, azobenzenes, quinones, silver halides or zinc halides. The photochromic layer can be or include DAE-0001, DAE-0012 and DAE-0068.

In some embodiments, the core material may be or include a reflective mineral. The reflective mineral can be or include mica, titanium oxide or silicon oxide. The photochromic formulation may further comprise a speckle control layer, interposed between the core material and the photochromic layer, wherein the speckle control layer comprises a photoreactive material characterized by a transition from visible transparency to visible opacity when exposed to irradiation of a characteristic wavelength, the visible opacity corresponding to a broad reflectance in the visible spectrum. The transition from visible transparency to visible opacity can be progressive in proportion to the amount of irradiation. The particle can be characterized by a diameter less than or equal to 20 micrometers.

A photochromic formulation can be or include a core material and a structural color material covering the core material forming a particle centered around the core material.

In some embodiments, the structural color material may be or include a photonic crystal material. The photonic crystal material may be or include a first photonic crystal material characterized by a first structural color in the bluish range. The photonic crystal material may be or include a second photonic crystal material characterized by a second structural color in the greenish range. The photonic crystal material may be or include a third photonic crystal material characterized by a third structural color in the reddish range. The photochromic formulation may further comprise a plurality of particles comprising the particle. The plurality of particles may include a first proportion of particles comprising the first nanostructured material. The plurality of particles may comprise a second proportion of particles comprising the second nanostructured material. The plurality of particles can also comprise a third proportion of particles comprising the third nanostructured material. The first proportion, the second proportion and the third proportion can be substantially equal or disparate.

In some embodiments, the structural color material may further comprise a photoreactive matrix characterized by a transition from visible transparency to visible opacity when exposed to irradiation of a characteristic wavelength associated with the respective structural color. The nanostructured material may be or include a plurality of porous clusters suspended in the photoreactive matrix. Porous clusters can be or feature reverse opal formed from silicon oxide or titanium oxide. The photochromic formulation may also include a luminosity layer covering the photochromic layer. The luminosity layer comprises a photoreactive material characterized by a transition from visible transparency to visible opacity when exposed to irradiation of a characteristic wavelength, the visible opacity corresponding to a broad absorbance in the spectrum visible. The transition from visible transparency to visible opacity can be progressive in proportion to the amount of irradiation. The luminosity layer can be or include spiropyran or naphthopyran. The core material and the structural color material can be the same material or different materials.

This summary is provided to present a selection of concepts in simplified form which are described in more detail below in the Detailed Description. This summary is not intended to identify key features of claimed subject matter, nor to be used as an aid in determining the scope of claimed subject matter.

BRIEF DESCRIPTION OF FIGURES

There is a schematic illustration of one embodiment of a system incorporating sensors and an illumination source for the application of cosmetic designs, in accordance with various embodiments.

There is a schematic illustration of a digital representation of a cosmetic design in the form of a polygon grid having a design data tensor in a face direction and a small angle direction, in accordance with various embodiments.

There is a schematic illustration of a three-dimensional model projection of the cosmetic design onto a face mapping collected using the system of the , in accordance with various embodiments.

There is a schematic illustration of a photochromic formulation having a core-shell structure, according to various embodiments.

There is a schematic photo-modulation illustration of the photochromic formulation of the , in accordance with various embodiments.

There describes spectroscopic aspects of the system of the , including intensity spectra and absorbance spectra for three illumination sources and three photochromic materials, in accordance with various embodiments.

There is a schematic illustration of a cosmetic formulation under face illumination and low angle illumination to produce full color designs, in accordance with various embodiments.

There is a flowchart that illustrates an example process for applying a cosmetic design using the photochromic material of the , in accordance with various embodiments.

There is a block diagram that illustrates aspects of an exemplary computing device suitable for use as the computing device of the present disclosure.

The foregoing aspects and many related advantages of the present disclosure will be more readily appreciated as they are better understood by reference to the following detailed description, taken in conjunction with the accompanying drawings.

In the aforementioned drawings, like reference numerals refer to like parts in the various views, unless otherwise indicated. Not all instances of an element are necessarily marked in order to simplify the drawings, if necessary. The drawings are not necessarily to scale, emphasis instead being placed on illustrating the principles described.

Claims (10)

Photochromic formulation, comprising:
a core material; And
a photochromic layer covering the core material and forming a particle centered around the core material. A photochromic formulation according to claim 1, wherein the photochromic layer comprises a plurality of photochromic materials, comprising:
a first photoreactive pigment characterized by reversible diffuse reflectance at a first central wavelength of 490 nm to 520 nm in response to irradiation by photons of a first characteristic wavelength;
a second photoreactive pigment characterized by reversible diffuse reflectance at a second central wavelength of 570 nm to 590 nm in response to irradiation by photons of a second characteristic wavelength; And
a third photoreactive pigment characterized by reversible diffuse reflectance at a third central wavelength of 450 nm to 495 nm and a fourth central wavelength of 625 nm to 740 nm in response to irradiation by photons of a third characteristic wavelength;
wherein the first characteristic wavelength, the second characteristic wavelength and the third characteristic wavelength are different. Photochromic formulation according to claim 2, in which:
the first photoreactive pigment comprises 1,2-bis(2-methyl-5-phenyl-3-thienyl)-3,3,4,4,5,5-hexafluorocyclopentene;
the second photoreactive pigment comprises 1,2-bis(2-methyl-5-phenyl-3-thienyl)-3,3,4,4,5,5-hexafluorocyclopentene; And
the third photoreactive pigment comprises 1,2-bis(3-methylbenzo(b)thiophen-2-yl)perfluorocyclopentene. A photochromic formulation according to claim 1, wherein the photochromic layer comprises spiropyrans, spirooxazines, diarylethenes, azobenzenes, quinones, silver halides or zinc halides. A photochromic formulation according to claim 4, wherein the photochromic layer comprises DAE-0001, DAE-0012 and DAE-0068. A photochromic formulation according to claim 1, wherein the core material comprises a reflective mineral. A photochromic formulation according to claim 6, wherein the reflective mineral comprises mica, titanium oxide or silicon oxide. A photochromic formulation according to claim 6, further comprising:
a speckle control layer, interposed between the core material and the photochromic layer, wherein the speckle control layer comprises a photoreactive material characterized by a transition from visible transparency to visible opacity when exposed to a irradiation of a characteristic wavelength, the visible opacity corresponding to a large reflectance in the visible spectrum. A photochromic formulation according to claim 8, wherein the transition from visible transparency to visible opacity is gradual in proportion to an amount of irradiation. Photochromic formulation according to claim 1, in which the particle is characterized by a diameter less than or equal to 20 micrometers.