| 摘要 |
<p>A fluorescent anti-fake fiber and an anti-fake material whose vision character change caused by excited light angle change. Single anti-fake fiber includes at least two material parts, which distribute on the cross section and run parallel along the fiber length direction. These parts have different optic character. The distribution on the cross section of at least two parts makes that part or full shielding structure for keeping out the excited light is formed between the two parts and makes that there exists at least two incident angles A and B on the anti-fake fiber. When the excited light irradiates from A or B, the vision effect is different. After the anti-fake fiber is added to the anti-fake material, the luminescent color will change when the incident angle of the excited light is changed.</p> |
