US 11,998,097 B2 · Hair styling device

Abstract

In a hair styling device (20) having a two-dimensional array (21) of elements to bring hair at a styling temperature, the elements produce optical radiation energy. The elements may include one or more LEDs, and preferably a plurality of LEDs, in which case the LEDS are driven in clusters that may be of mutually different shapes and sizes. The hair styling device (20) further comprises sensors to obtain an areal light absorption measurement opposed to the two-dimensional array of elements, and a control unit for individually controlling the elements in dependence of the measurement. The sensors may be arranged for measuring an areal light density profile of a whole treatment area. The hair styling device may radiate hair from two sides, both of which includes an areal light absorption measurement. The sensors may include LEDs that do not produce light.

Claims20

Dependent claims

A hair styling device, comprising:

a two-dimensional array of elements to heat hair, wherein the elements are opposed to each other and are configured to produce optical radiation energy;
sensors to obtain an areal light density profile of a treatment area within a gap between the two-dimensional array of elements;
and a control unit for controlling each of the elements of the two-dimensional array of elements individually in dependence of a sensed hair density measurement such that intensity of the optical radiation energy output is adjusted based on output from the control unit.

Dependencies are inferred from the claim text.

Hair styling device

Life of this patent

Hair styling device

Life of this patent

Abstract

Claims20