Hair removal device
First Claim
1. A hair removal device comprising a light emission unit comprising a substrate and a plurality of first LED dies that are mounted on the substrate on an area in the range of between about 0.2 cm2 and about 100 cm2, the first LED dies having a peak emission wavelength in the far red or infrared wavelength range of between about 700 nm and about 980 nm, wherein the hair removal device is arranged to emit a treatment light pulse having a pulse length in the range of between about 60 ms and about 120 ms and the first LED dies have a radiant flux such that a radiant fluence on the skin of a user in the range of between about 3 J/cm2 and about 7 J/cm2 is achieved by application of the treatment light pulse.
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Abstract
The present invention is concerned with a hair removal device having a light emission unit having a substrate and a plurality of first LED dies that are mounted on the substrate on an area of at least 0.2 cm2, in particular of at least 1 cm2, the first LED dies having a peak emission wavelength in the far red or infrared wavelength range of between 700 nm and 980 nm, wherein the hair removal device is arranged to emit a treatment light pulse having a pulse length in the range of between 60 ms and 120 ms and the first LED dies have a radiant flux such that a radiant fluence on the skin of a user in the range of between 3 J/cm2 and 7 J/cm2 is achieved by application of the treatment light pulse.
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Citations
13 Claims
- 1. A hair removal device comprising a light emission unit comprising a substrate and a plurality of first LED dies that are mounted on the substrate on an area in the range of between about 0.2 cm2 and about 100 cm2, the first LED dies having a peak emission wavelength in the far red or infrared wavelength range of between about 700 nm and about 980 nm, wherein the hair removal device is arranged to emit a treatment light pulse having a pulse length in the range of between about 60 ms and about 120 ms and the first LED dies have a radiant flux such that a radiant fluence on the skin of a user in the range of between about 3 J/cm2 and about 7 J/cm2 is achieved by application of the treatment light pulse.
Specification