4. Optical: systems and elements
  5. Single channel simultaneously to or from plural channels
  6. By partial reflection at beam splitting or combining surface

Douglas Donaldson

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Head-mounted personal visual display apparatus with image genera

Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent

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Head-mounted personal visual display apparatus with image...

Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Reexamination Certificate

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