Hair cutting device with comb unit recognition

A hair cutting system comprising:

• a hair cutting device including a hair cutting device body having a cutting arrangement for cutting hair, a comb interface having a comb recognition arrangement, and a light source;
• and
• a plurality of interchangeable comb units for releasable attachment of a selected comb unit to the comb interface of the hair cutting device body, the selected comb unit being one of the plurality of interchangeable comb units,
• wherein the hair cutting device body includes a hair length indicator operatively coupled to the comb interface for indicating to a user a hair length associated with the selected comb unit attached to the comb interface and identified by a comb identification member and detected by the comb recognition arrangement as being attached to the comb interface of the hair cutting device body,
• wherein the hair length indicator includes a movable element arranged over a fixed element, the fixed element being arranged over the light source, wherein the movable element includes a first translucent pattern and the fixed element includes a second translucent pattern.

A hair cutting device system comprising:

• a hair cutting device including a hair cutting device body having a cutting arrangement for cutting hair, a comb interface, a user-controllable actuator for moving a movable carrier, and a light source arranged on the movable carrier;
• and
• a plurality of interchangeable comb units for releasable attachment of a selected comb unit to the comb interface of the hair cutting device body,
• wherein each interchangeable comb unit of the plurality of interchangeable comb units includes a respective comb identification member identifying the each interchangeable comb unit of the plurality of interchangeable comb units, and
• wherein the light source is movable to indicate a current hair length setting to a user in response to actuation of the user-controllable actuator.

A hair cutting system comprising:

• a hair cutting device including a hair cutting device body having a cutting arrangement for cutting hair, an actuator, a comb interface having a comb recognition arrangement, and a hair length indicator having a first arrow, a second arrow, a first scale and a second scale of hair lengths;
• and
• a first comb unit and second comb unit for releasable attachment one at a time to the comb interface of the hair cutting device body,
• wherein the actuator is configured to move one of the first comb unit and the second comb unit relative to the hair cutting device body to change a length of hair to be cut when the one of the first comb unit and the second comb unit is attached to the comb interface,
• wherein the comb recognition arrangement is configured to provide an electronic signal to the hair length indicator based on the one of the first comb unit and the second comb unit attached to the comb interface and recognized by the comb recognition arrangement, and
• wherein the actuator is configured to move the first arrow and the second arrow depending on the electronic signal, by moving the first arrow along the first scale of hair lengths when the first comb unit is recognized by the comb recognition arrangement as being attached to the comb interface, and by moving the second arrow along the second scale of hair lengths when a second comb unit is recognized by the comb recognition arrangement as being attached to the comb interface.