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US 4,040,727 AGranted
Transflector
AssigneeRockwell International Corporation
InventorRichard D. Ketchpel
Life of this patent
Estimating the term…
Abstract
There is provided an efficient semi-transparent reflector (transflector) which reflects direct light under normal, ambient light conditions but permits back lighting of a display, such as an LCD display, under dark ambient light conditions. Such a "transflector" is inexpensive to manufacture and provides an efficient device in which the pattern and body color of the reflector can easily be changed.
Claims9
A transflector comprising,
- a sheet of light transmitting material having an undulating surface, and
- a discontinuous film of light reflecting material on said surface of said sheet forming a plurality of islands which exhibit a fissured pattern running in one direction across said sheet,
- said film arranged to reflect substantial portions of incident light to prevent incident light from passing through said sheet and to permit light to be transmitted through said sheet from a light source behind said sheet.
Dependencies are inferred from the claim text.