4. Optics: image projectors
  5. Reflector

Yong-dok Cha

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Light tunnel, uniform light illuminating device and...

Optical waveguides – Optical imaging tunnel
Reexamination Certificate

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Optical illumination system and image projection system...

Optics: image projectors – Reflector
Reexamination Certificate

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Projection apparatus

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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Projection lens system for image projection apparatus

Optical: systems and elements – Lens – With field curvature shaping
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Profile ID: LFUS-PAI-P-2869978

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