Koninklijke Philips Corporation N.V.

Kiran Kumar Thumma

Bastiaan Wilhelmus Maria Moeskops

Rieko Verhagen

Mark Thomas Johnson

Yannyk Parulian Julian Bourquin

Jonathan Alambra Palero

Marius Iosif Boamfa

Frank Anton Van Abeelen

Gerhardus Wilhelmus Lucassen

Babu Varghese

Martinus Bernardus Van Der Mark

Joseph Petrus Henricus Ter Borch

Petrus Theodorus Jutte

Roelof Koole

Karl Catharina Van Bree

Willem Verkruijsse

Arnoldus Johannes Martinus Jozeph Ras

Petrus Cornelis Paulus Bouten

Elvira Johanna Maria Paulussen

Emile Johannes Karel Verstegen

Vishnu Vardhan Pully

Calina Ciuhu

Wouter Hendrik Cornelis Spoorendonk

Thomas Petrus Hendricus Warmerdam

Shakith Devinda Fernando

Thomas Adriaan Cohen Stuart

Giorgos Mazarakis

Nuno Filipe Baltazar Dos Santos

According to an aspect, there is provided a treatment device for performing a treatment operation on or to a subject. The treatment device comprises: an optical diffuser arranged on the treatment device such that an outer surface of the optical diffuser is proximate to, or in contact with, skin of the subject when the treatment device is to be used to perform the treatment operation; and an imaging unit for obtaining one or more images using light passing through the optical diffuser into the treatment device; wherein the treatment device is further configured for providing one or more images to a processing unit for determination of whether the treatment device is in contact with the skin.

Treatment device and method

According to an aspect, there is provided a hand-held skin treatment device () for applying light to skin of a subject to perform a treatment operation. The hand-held device () comprises a rigid main housing () accommodating a cooling unit (); a first treatment head portion () coupled to the main housing () for performing the treatment operation on a first skin portion, wherein the first treatment head portion () comprises a first optical waveguide () having a first skin-contact surface () with a first total surface area, a first light source () for generating light and applying the light to the first skin portion via the first optical waveguide () and the first skin-contact surface (), and a first heat sink () thermally coupled to the first light source () and to the cooling unit (); a second treatment head portion () for performing the treatment operation on a second skin portion adjacent to the first skin portion, wherein the second treatment head portion () comprises a second optical waveguide () having a second skin-contact surface () with a second total surface area, a second light source () for generating light and applying the light to the second skin portion via the second optical waveguide () and the second skin-contact surface (), and a second heat sink () thermally coupled to the second light source (); wherein the hand-held device () is operable in (i) a first configuration in which the first and second treatment head portions () are in a first spatial arrangement relative to the main housing () such that, in an operational position of the main housing () relative to the skin, only the first skin-contact surface () is arranged in a treatment position relative to the main housing () such as to be able to contact the skin over the first total surface area; and (ii) a second configuration in which the second treatment head portion () is coupled to the main housing () and the second heat sink () is thermally coupled to the cooling unit (), and in which the first and second treatment head portions () are in a second spatial arrangement relative to the main housing (), different from the first spatial arrangement, such that, in the operational position of the main housing (), the first skin-contact surface () and the second skin-contact surface () are each arranged in a treatment position relative to the main housing () such as to be able to contact the skin over, respectively, the first total surface area and the second total surface area.

Hand-held device for performing a treatment operation

A hair cutting device for cutting hair on a body of a subject includes a light source for generating laser light at one or more specific wavelengths corresponding to wavelengths absorbed by one or more chromophores in hair; and a cutting element that has an optical waveguide that is coupled to the light source to receive laser light. A portion of a side wall of the optical waveguide forms a cutting face for contacting hair where, at least at the cutting face, the optical waveguide has a refractive index that is equal to or lower than the refractive index of hair and higher than the refractive index of skin.

Hair cutting device

According to an aspect, there is provided a handheld device () for applying energy pulses to skin () of a subject to perform a treatment operation as the handheld device is moved across the skin, the handheld device comprising: an aperture () that is to be placed adjacent to the skin; at least one energy source () for generating an energy pulse and for providing the energy pulse through the aperture to perform the treatment operation on 5 skin adjacent the aperture, wherein the at least one energy source has a minimum pulse repetition period following the generation of an energy pulse before a subsequent energy pulse can be generated; a first skin property sensor () for measuring a skin property and for outputting a first measurement signal representing measurements of the skin property at a first sensing position (), wherein the skin property is a property that changes in response to the application of an energy pulse to the skin, and wherein the first sensing position is in front of the aperture relative to an intended motion direction of the handheld device over the skin; a second skin property sensor () for measuring the skin property and for outputting a second measurement signal representing measurements of the skin property at a second sensing position (), wherein the second sensing position is behind the aperture relative to the intended motion direction; a memory unit (); and a control unit () that is coupled to the at least one energy source to control the generation of energy pulses by the at least one energy source, and coupled to the first skin property sensor and the second skin property sensor to obtain the first measurement signal and the second measurement signal, wherein the control unit is configured to store a profile of at least the first measurement signal in the memory unit; wherein the control unit is further configured to, when the handheld device is moving in the intended motion direction over the skin: analyse the profile of the first measurement signal to determine if the first skin property sensor is passing over a previously treated area of skin; on detecting that the first skin property sensor is not passing over a previously treated area of skin, control the at least one energy source to generate an energy pulse if, or once, the minimum pulse repetition period following the generation of a previous energy pulse has expired; on detecting that the first skin property sensor is passing over a previously treated area of skin, performing the consecutive operations of: preventing the generation of an energy pulse, even if the minimum pulse repetition period following the generation of a previous energy pulse has expired; marking a point in the profile of the first measurement signal stored in the memory unit according to a predetermined rule, wherein the marked point relates to a position on the previously treated area of skin; using information about the marked point, analyse the profile of the second measurement signal to identify a similar marked point in the profile of the second measurement signal; on identifying the similar marked point in the profile of the second measurement signal, controlling the at least one energy source to generate an energy pulse if, or once, the minimum pulse repetition period following the generation of a previous energy pulse has expired.

Handheld device for performing a treatment operation on skin

There is provided a system for performing ambient light image correction. The system comprises a light source, a rolling shutter imaging unit configured to capture a plurality of images of the object at an exposure time shorter than the wave period of the pulsed illumination from the light source, and a control unit configured to generate a first composite image comprising a plurality of bright bands from the plurality of captured images by combining sections from the plurality of captured images which correspond to bright bands, generate a second composite image comprising a plurality of dark bands from the plurality of captured images by combining sections from the plurality of captured images which correspond to dark bands, and generate an ambient light corrected image based on a difference in pixel information between the first composite image and the second composite image.

System for performing ambient light image correction

There is provided a hair cutting device for cutting hair on a body of a subject, the hair cutting device comprising a light source for generating light at one or more specific wavelengths corresponding to wavelengths absorbed by one or more chromophores in or on hair; a cutting element that comprises an optical waveguide that is coupled at a first end to the light source to receive light, wherein a portion of a sidewall of the optical waveguide forms a cutting face for contacting hair; a light sensor that is coupled to the optical waveguide away from the first end, wherein the light sensor is for measuring the light level in the optical waveguide and for providing an output signal representing the measured light level; and a control unit that is coupled to the light source, and coupled to the light sensor to receive the output signal, wherein the control unit is configured to determine a measure of the amount of input light transmitted across the optical waveguide from the measured light level and an input light level at the first end of the optical waveguide; and to control the power of the light generated by the light source based on the determined measure.

Hair cutting device and a method of operating a hair cutting device

A hair cutting device for cutting hair on a body of a subject includes a laser light source, and a light guiding element for guiding light from the light source to the cutting element. The cutting element includes an optical waveguide for receiving light from the light guiding element. The light guiding element has a tapered section in which a diameter of the light guiding element reduces from a light source side diameter to a cutting element side diameter. A portion of a sidewall of the optical waveguide of the cutting element forms a cutting face for contacting hair.

Cutting assembly for a hair cutting device

A laser-based hair cutting device () comprises a laser source (), an optically transparent exit window () and optical elements (). The laser source () provides an incident light beam () for cutting a hair () above and near a skin surface by laser-induced optical breakdown (LIOB) of the hair () in a focal position of the light beam (). The optically transparent exit window has an external exit surface () for allowing the incident light beam () to leave the device. The optical elements () focus the incident light beam () in the focal position at a working distance from the exit surface (). The working distance is at least wherein NA is a numerical aperture of the incident light beam leaving the device (), Eis a pulse energy (J) of the incident light beam (), Fis a fluence threshold (J/m) of the exit surface, Mis a beam quality of the incident light beam () and &#x3bb; is a wavelength (m) of the incident light beam ().

LIOB based hair cutting device

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Eindhoven, Netherlands

Kiran Kumar Thumma