4. Optical: systems and elements
  5. Projection screen
  6. Unitary sheet comprising plural refracting areas

Estill Thone Hall, Jr.

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Apparatus for adding red light to a polarized light system

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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Backlight assembly and a liquid crystal display device using...

Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Reexamination Certificate

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High contrast stereoscopic projection system

Optics: image projectors – Stereoscopic – Polarizer
Reexamination Certificate

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Holographic projection screen having a rear-facing fresnel lens

Optical: systems and elements – Projection screen – Unitary sheet comprising plural refracting areas
Patent

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Imager to imager relay lens system

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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Profile ID: LFUS-PAI-P-1352133

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