| 摘要 |
An optical element includes a first substrate, a second substrate, a retardation plate made of an inorganic material, having refractive index anisotropy, and having a thin plate like main part to be disposed between the first substrate and the second substrate, the main part being formed to be thin in comparison with a thickness of the first substrate and a thickness of the second substrate, a first adhesive layer for filling a gap between the first substrate and the retardation plate, and a second adhesive layer for filling a gap between the retardation plate and the second substrate.
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