Abstract: Provided herein is a first fluid dispersed in a second fluid to form an emulsion of micro-droplets having an average droplet size and having a droplet size distribution around the average droplet size and below a maximum droplet size. The micro-droplets will lose their solvent to transform to micro-spheres exhibiting a particle size distribution around an average particle size and substantially below a maximum allowable particle size. The micro-spheres are subjected to a micro-filter having a relatively narrow pore size distribution around an average pore size, which average pore size is between the average particle size and the maximum particle size. A filtrate of the micro-filter comprises a majority of the micro-spheres that is substantially void of micro-spheres having a particle size exceeding the maximum allowable particle size.

Abstract: A first fluid is dispersed in a second fluid to form an emulsion of micro-droplets having an average droplet size and having a droplet size distribution around said average droplet size and below a maximum droplet size. Said micro-droplets will lose their solvent to transform to micro-spheres exhibiting a particle size distribution around an average particle size and substantially below a maximum allowable particle size. Said micro-spheres are subjected to a micro-filter having a relatively narrow pore size distribution around an average pore size, which average pore size is between said average particle size and said maximum particle size. A filtrate of said micro-filter comprises a majority of said micro-spheres that is substantially void of micro-spheres having a particle size exceeding the maximum allowable particle size.

Abstract: A device for generating microspheres from a fluid includes an injection plate with at least one defined injection channel having on an inlet side an inflow opening for receiving the fluid and on an outlet side an outflow opening for delivering microspheres formed from the fluid. The device includes feed elements for carrying fluid through the injection channel and is in open communication, on a side wall thereof, with at least one secondary channel at least at the position of a break-up point where at least during operation a flow of fluid in the injection channel breaks up into separate parts. The secondary channel includes in use an auxiliary fluid at least at the position of a break-up point.

Abstract: A device for the treatment of skin by radiation pulses. The device has a detector measuring a biophysical property of skin, such as temperature increase, dispersion or absorption coefficient, or reflection coefficient for light having a predetermined wavelength, and also has a control unit which determines, from the biophysical property, a safe dose of radiation. The device automatically protects against an overdose from the radiation source. The invention can be used, not only in a hair removing device such as a laser epilator, a laser shaver or a flashlight epilator, but also in devices for the medical treatment of skin by means of radiation, such as photodermatology systems.

Abstract: In an integrated optical lightguide device including a light-transmitting core layer, an inclusion or buffer layer, and an active or cladding layer. The cladding layer is divided into segments. Groups of different segments exhibit different refractive indices, light intensity profiles or different degrees of sensitivity which have been effected by different methods. Thus, repeated adjustable or controllable transmission has resulted in an extremely sensitive waveguide system for a sensor, a modulator, or a spectrophotometer.

Abstract: The invention relates to a hair removing device (1) comprising a hair removing member (3) for removing hairs from human skin and an auxiliary member for generating a change of the temperature of the skin present near the hair removing member. According to the invention, the auxiliary member comprises a heating member (13) for generating a rise in temperature of the skin present near the hair removing member. Said temperature rise has a pain masking effect, which can be attributed to the fact that the heat receptors present in the heated skin generate heat signals in the nervous system which block the pain signals generated by the adjacent pain receptors when the hairs are being removed. Thus, the user experiences less pain during the removal of the hairs. In a preferred embodiment, the heating member (13) comprises a skin contacting element (19) which is in thermal contact with a compound having a eutectic composition contained in a chamber (17) of a holder (15).

Abstract: The invention relates to a device (1) for the treatment of skin (7) by means of radiation pulses. The device comprises a housing (3) accommodating a radiation source (9) and a control unit (37) for controlling the radiation source. According to the invention, the device has a detector (43), which is suitable for measuring a biophysical property of the skin, and the control unit has means for determining, on the basis of a value or a condition of the biophysical property measured by the detector, a pulse dose from the radiation source that is safe for skin. In this manner, the device is automatically protected against an overdose from the radiation source that could cause undesirable side-effects on the skin.

Abstract: The invention relates to a hair removing device (1) comprising a hair removing member (3) for removing hairs from human skin and an auxiliary member for generating a change of the temperature of the skin present near the hair removing member. According to the invention, the auxiliary member comprises a heating member (13) for generating a rise in temperature of the skin present near the hair removing member. Said temperature rise has a pain masking effect, which can be attributed to the fact that the heat receptors present in the heated skin generate heat signals in the nervous system which block the pain signals generated by the adjacent pain receptors when the hairs are being removed. Thus, the user experiences less pain during the removal of the hairs.