Screen unit and display system

Optical: systems and elements – Projection screen

Reexamination Certificate

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Details

C359S449000, C359S454000, C359S459000

Reexamination Certificate

active

06844967

ABSTRACT:
A screen unit includes a semipermeable screen sheet sandwiched between a first transparent sheet and a second transparent sheet. The semipermeable screen sheet transmits and reflects a projected image in a constant percentage. The first transparent sheet such as an acrylic sheet wider than the semipermeable screen sheet. The second transparent sheet is the same as the first transparent sheet.

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patent: 2001-154274 (2001-06-01), None

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