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US 2020/0264358 A1Published application
Viewer for determination of authenticity
AssigneeZeon Corporation
InventorKoya KAWABATA
Life of this patent
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Abstract
An authenticity determination viewer including a first phase difference film, a linear polarizer, and a second phase difference film in this order, wherein a polarized light transmission axis of the linear polarizer and a slow axis of the first phase difference film are non-parallel to each other, and the polarized light transmission axis of the linear polarizer and a slow axis of the second phase difference film are non-parallel to each other.
Claims8
An authenticity determination viewer comprising a first phase difference film, a linear polarizer, and a second phase difference film in this order, wherein
- a polarized light transmission axis of the linear polarizer and a slow axis of the first phase difference film are non-parallel to each other, and
- the polarized light transmission axis of the linear polarizer and a slow axis of the second phase difference film are non-parallel to each other.
Dependencies are inferred from the claim text.