Near one in a single bulb lamp is far or near two beams of light. Itof work principle is: a group beam issued of light by Lampshade reflectionmirror reflection Hou straight forward shot to, this light commonly known as"far light"; another a group is polarizing beam, issued to of lightto cover plate block to Lampshade reflection mirror of Shang half part, itsreflection out of light are is towards Xia diffuse fired ground, does not toopposite to car of driving who caused dazzling, this light commonly known as"near light".

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