Display apparatus
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United States of America Patent
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-
Feb 18, 1992
Grant Date -
N/A
app pub date -
Jun 1, 1989
filing date -
Jun 3, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A display apparatus comprises a display, a first diffraction grating for diffracting light from the display, and a second diffraction grating for diffracting diffracted light from the first diffraction grating, so that a half-width of the first diffraction grating is set to be larger than that of the second diffraction grating.
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Cited Art Landscape
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