An iris recognition apparatus, includes a guidance unit for guiding the position of an eye relative to the apparatus, and an image recognition unit for recognizing the image of an iris passed through the guidance unit. The apparatus also includes an optical axis adjustment unit for aligning the optical axes of the image recognition unit and guidance unit. The optical axis adjustment unit adjusts the optical axis of the image recognition unit by moving the image recognition unit vertically and horizontally.

 
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> Cantilever-type PLC optical attenuator and manufacturing method thereof

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