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Conventionally, a half mirror or polarization beam splitter was used as a combiner that superimposes a display image and an external image. However, it had a large optical loss ratio and a good see-through function could not be achieved. With efficient optical superimposition using an HOE, the high see-through characteristic that seldom loses external light and bright image display can be achieved together. (via Wearable Display-Optical Field | KONICA MINOLTA
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Conventionally, a half mirror or polarization beam splitter was used as a combiner that superimposes a display image and an external image. However, it had a large optical loss ratio and a good see-through function could not be achieved. With efficient optical superimposition using an HOE, the high see-through characteristic that seldom loses external light and bright image display can be achieved together. (via Wearable Display-Optical Field | KONICA MINOLTA

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