Light guide lens for palm vein recognition module and corresponding palm vein recognition module
The utility model relates to a light guide lens for a palm vein recognition module, which is provided with an annular light guide main body and a near-infrared light source, the annular light guide main body is provided with a lower surface and an upper surface, the near-infrared light source is arr...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model relates to a light guide lens for a palm vein recognition module, which is provided with an annular light guide main body and a near-infrared light source, the annular light guide main body is provided with a lower surface and an upper surface, the near-infrared light source is arranged below the lower surface of the annular light guide main body, and the near-infrared light source is arranged below the lower surface of the annular light guide main body. Wherein the lower surface is used as a light incident surface, the upper surface is used as a light emergent surface, the upper surface is provided with convex-concave structures which are arranged at intervals, the lower surface is provided with a triangular part, and the upper surface is arranged to be an inclined surface. The utility model also provides a corresponding palm vein identification module. By adopting the light guide lens for the palm vein recognition module and the corresponding palm vein recognition module, the uniformity of |
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