Abstract: A light based skin treatment device comprises a laser light source for providing a pulsed incident light beam for treating skin by laser induced optical breakdown of hair or skin tissue. In one arrangement, a focusing system has a pre-focusing lens for increasing the convergence of the an incident light beam and a skin contact lens having convex light input and light exit surfaces. The focal spot position is controlled by adjusting a spacing between the pre-focusing lens and the skin contact lens. In another arrangement, there is an adjustable lens system before an adjustable focusing system for providing compensation for aberration in the focusing system.

Abstract: 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 li

Abstract: According to an aspect, there is provided an imaging system (1) for imaging of subjects.

Abstract: A light based treatment device comprises an optical arrangement at a light exit end of an optical fiber. The optical arrangement includes a master oscillator power amplifier based on a semiconductor optical laser and a crystal optical amplifier. In this way, the peak power provided along the optical fiber can be reduced to prevent damage to the optical fiber, while enabling a sufficiently high pulse power to be delivered for tissue treatment.

Abstract: The invention provides a non-invasive device (100) for treatment of skin tissue using laser light, and it provides a method and a computer program product. The non-invasive device comprises a light emission system (110) for generating a first laser pulse (130) and a subsequent second laser pulse (150) at a predefined time delay (?T) after the first laser pulse. The non-invasive device further comprises an optical system (160) for focusing, in use, the first laser pulse and the second laser pulse at a treatment location (210) inside the skin tissue (200). The first laser pulse comprises a first power density, a first pulse duration and a first pulse energy for initiating a plasma (205) at the treatment location.

Abstract: There is provided a cutting assembly for use in a hair cutting device. The cutting assembly comprises an optical waveguide having a sidewall corresponding to a long edge of said optical waveguide. A portion of the sidewall forms a cutting face for contacting hair. The optical waveguide is moveable between a first, retracted position and a second, extended position. During use the cutting edge is arranged to be in contact with the hair in the extended, and not to be in contact with hair in the retracted position. The cutting assembly further comprises a movement mechanism for effecting cyclic movement of the optical waveguide between the retracted position and the extended position. A hair cutting device is also provided.

Abstract: There is provided a cutting element for use in a hair cutting device. The cutting element comprises an optical waveguide having a sidewall, wherein a portion of the sidewall forms a cutting face for contacting hair. The optical waveguide includes a plurality of optical structures spaced along its length, the optical structures being configured to reflect light at one or more wavelengths. When broadband light is directed along the optical waveguide the optical waveguide is such that: if the cutting face of the optical waveguide in is not in contact with a target object, then each of the plurality of optical structures reflects light having a first wavelength; and if the cutting face of the optical waveguide is in contact with a target object, then at least one of the optical structures reflects light having a second wavelength different to the first wavelength. A hair cutting device comprising the cutting element and a method of operating the hair cutting device are also provided.

Abstract: 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 li

Abstract: There is provided a hair cutting device for cutting hair on a body of a subject. The hair cutting device comprises at least one light source for generating laser light at two or more specific wavelengths corresponding to wavelengths absorbed by one or more chromophores in hair; and a cutting element comprising an optical waveguide for receiving light from the at least one light source. The optical waveguide comprises a cutting face, the cutting face being arranged to contact hair as the hair cutting device is moved across the skin of the body of a subject. The cutting face is arranged essentially parallel to the long axis of the optical waveguide. The optical waveguide is arranged to allow the light generated by the at least one light source to couple into hair when hair is close to or in contact with the optical waveguide. The at least one light source is configured to generate laser light having a first wavelength and a series of pulses of laser light having a second wavelength.

Abstract: A light based treatment device comprises an optical arrangement at a light exit end of an optical fiber. The optical arrangement includes a master oscillator power amplifier based on a semiconductor optical laser and a crystal optical amplifier. In this way, the peak power provided along the optical fiber can be reduced to prevent damage to the optical fiber, while enabling a sufficiently high pulse power to be delivered for tissue treatment.

Abstract: A light based skin treatment device comprises a laser light source for providing a pulsed incident light beam for treating skin by laser induced optical breakdown of hair or skin tissue. In one arrangement, a focusing system has a pre-focusing lens for increasing the convergence of the an incident light beam and a skin contact lens having convex light input and light exit surfaces. The focal spot position is controlled by adjusting a spacing between the pre-focusing lens and the skin contact lens. In another arrangement, there is an adjustable lens system before an adjustable focusing system for providing compensation for aberration in the adjustable focusing system.

Abstract: A pulsed laser skin treatment device is for laser induced optical breakdown of hair or skin tissue. A feedback system is used for detecting a feedback system based on light and/or sound/and/or contact force or pressure. The feedback signal is used to determine whether a pulse was in the tissue or outside the tissue. With these data an effectiveness of the treatment can be determined which can be provided to a user.

Abstract: A device for light-based skin treatment is provided. The device comprises a light source for providing an incident light beam for treating a skin, optical elements for focusing the incident light beam in a focal point inside the skin, and a skin interface element for, during use of the device, providing optical coupling of the incident light beam from the device into the skin. The skin interface element comprises a transparent exit window for allowing the incident light beam to leave the device, on top of the exit window, a transparent mixture of a polar substance and an apolar substance, and on top of the transparent mixture, a transparent foil, the transparent foil being more hydrophobic than the exit window.

Abstract: There is provided an apparatus comprising: a base substrate and a component substrate having at least two electronic components arranged thereon. At least one aperture is formed through an entire thickness of the component substrate. The at least one aperture is formed in an interspace between the at least two electronic components. The component substrate is coupled to the base substrate using a solder joint. Each of the at least two electronic components may comprise a light emitting diode element. A method of manufacturing an apparatus is also disclosed.

Abstract: A pulsed laser skin treatment device is for laser induced optical breakdown of hair or skin tissue. The device has a light exit window to be placed against a surface to be treated such as skin during use. A feedback system is used for determining a state of contact between the light exit window and the surface. To this end the feedback system is capable of detecting a feedback signal representative for the state of contact. If the feedback signal or the state of contact is such that the risk of skin surface or device damage by the device operation is too high, the user or the device has a way to interrupt the treatment or to reduce light output to reduce or eliminate this risk.

Abstract: 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.

Abstract: A light-based skin treatment device is for treating skin by laser induced optical breakdown of hair or skin tissue. A focusing system has an exit focusing lens for focusing the incident light beam into a focal spot in the hair or skin tissue. This lens has a central aperture. This serves to reduce back-reflectance from the lens surface, which can cause damage to the focusing system.

Abstract: A light based skin treatment device (10, 20) is provided, comprising a light source (18) for providing an incident light beam (21) for treating a skin (30) by laser induced optical breakdown (LIOB) of hair or skin tissue, a transparent exit window (14) for allowing the incident light beam (21) to exit the device (10, 20), and an optical system for focusing the incident light beam (21) into a focal spot (221, 222) in the hair or skin tissue outside the skin treatment device (10, 20).

Abstract: There is provided a method of manufacturing a cutting element for use in a hair cutting device, the cutting element comprising an optical waveguide, the method comprising providing a preform for an optical waveguide, the preform comprising a core and an outer layer, wherein the outer layer is arranged around the core along the length of the core; forming a shaped preform by removing a portion of the outer layer along the length of the core to expose part of the core, wherein a remaining portion of the outer layer is a support structure for the core; heating the shaped preform; and pulling the shaped preform in the direction of the axis of the core to reduce the cross-section of the shaped preform and form the optical waveguide.

Abstract: There is provided a method (500) of treating an optical waveguide. The method comprises applying (502) the volume of ferrofluid to the optical waveguide, and applying (504) a magnetic field to the volume of ferrofluid to move the volume of ferrofluid at least partially along a length of the optical waveguide. A personal care device and a system are also disclosed.