| 摘要 |
A portable lighting device (1), the device comprising:
a light source (2);
a housing (3) for mounting the light source; and
a light controlling system for operating the light source so as to control the emitted light output;
a position detection system for determining the position of the lighting device;
characterised in that depending on the position of the lighting device detected by the position detection system, the light controlling system is provided to operate the light source such that a predetermined output is emitted. |
