| 主权项 |
1. A cutting head for a device for cutting hair that uses a laser beam, the laser beam having a longitudinal axis that extends across a cutting zone, said laser beam having an effective cutting region in which the laser beam is of a sufficient intensity to cut hair entering said region, the cutting head comprising a guard adjacent to said cutting zone that, during use of the device, contacts a user's skin so that the user's skin conforms to the shape of the guard and spaces the laser beam from said user's skin,
wherein the guard has a non-planar shape in a direction extending across the cutting zone in the longitudinal direction of the laser beam so that it substantially follows a contour that extends across the cutting zone in the longitudinal direction of the laser beam, and which defines an edge of said effective cutting region of the laser beam such that, during use of the device, any variation in the distance between said edge of the effective cutting region and a user's skin, which is in conformity with the shape of the guard, across the length of the cutting zone is reduced. |
