Patent ID: 8454670

Claim:
A light therapy device, comprising: a plurality of light emitting elements; memory; one or more processors; one or more modules stored in the memory and configured for execution by the one or more processors, the one or more modules comprising: a detection module configured to detect a body parameter of a human body; a determination module in communication with the detection module and configured to receive the body parameter and output a fatigue level corresponding to the body parameter; and a control module in communication with the determination module and the light emitting elements, the control module being configured to receive the fatigue level and control the light emitting elements to emit lights with an irradiation intensity for a preset period of time in response to receiving the fatigue level, the irradiation intensity and the preset period of time having a predetermined relationship with the fatigue level; wherein the body parameter is the rhythm of heartbeat, when the body parameter is between 60 beats per minute and 100 beats per minute, the fatigue level is confirmed to be level 1; when the body parameter is less than 60 beats per minute, the fatigue level is confirmed to be level 2; when the body parameter is greater than 100 beats per minute, the fatigue level is confirmed to be level 3.