Virtual image display apparatus
AssigneeSeiko Epson Corporation
InventorsAkira Komatsu, Takahiro Totani, Masayuki Takagi, Takashi Takeda, Toshiaki Miyao
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AssigneeSeiko Epson Corporation
InventorsAkira Komatsu, Takahiro Totani, Masayuki Takagi, Takashi Takeda, Toshiaki Miyao
Estimating the term…
A light guide member includes three surfaces of a second surface, a fourth surface, and a fifth surface as two or more non-axisymmetric curved surfaces, and a projection lens includes a lens surface as a non-axisymmetric aspheric surface. With this, on the light guide member side, even when there is a shape constraint that the first surface or the third surface which is a surface contributing to light guide is a flat surface, and correction of asymmetric aberration is limited, it becomes possible to perform sufficient aberration correction as the whole of an optical system including the projection lens. Therefore, the virtual image display apparatus can have a wide viewing angle and high performance, and can be made small and lightweight.
A virtual image display apparatus comprising:
A projection see-through device comprising:
Dependencies are inferred from the claim text.