Light modulation device and light modulation transmission method for elevator equipment

The invention relates to a light modulation device (1) for an elevator system (2) having an elevator car (3) and to a light modulation method in an elevator system (2). The light modulation device (1) has a modulator (5) which can receive a first electrical signal (16) from a control unit (6) of the elevator system (1). The modulator (5), in order to modulate the first electrical signal (16), controls a lighting device (4) comprising two or more light-emitting diodes (7) in the elevator car (3) in such a way that the lighting device (4) generates a first light signal (14) for encoding the first electrical signal (16), and the modulator (5) can switch on and off the light-emitting diodes (7) and/or adjust the brightness of the light-emitting diodes (7), and the modulator (5) can synchronously or asynchronously switch the light emitting diodes (7) and/or adjust the brightness of the light emitting diodes. 本发明涉及一种具有电梯轿厢(3)的电梯设备(2)的光调制装置(1)及一种电梯设备(2)中的光调制方法。光调制装置(1)具有调制器(5)，所述调制器能够从电梯设备(1)的控制单元(6)接收第一电信号(16)。并且调制