Optical numerical segment display

Details Optical numerical segment display Optical numerical segment display

1978-02-13

1980-07-29

Pitrelli, John F.

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Alphanumeric device

40546, 340380, G09F 1318

Patent

active

042143918

ABSTRACT:
An optical display presenting a display field at least one digit in a seven segment arrangement, a stack of seven plate elements for each digit and arranged in a stack, a single light source directing light into the light inlet ends of all of the seven plates, a movable shutter element wth transparent and opaque areas movable across the light source and light inlets of the plates, each plate having a chamfered edge portion remote from the light inlet end and reflecting light transversely of the plate and onto the display field.

REFERENCES:
patent: 3253274 (1966-05-01), Berman
patent: 3553666 (1971-01-01), Melone
patent: 3611359 (1971-10-01), Panerai et al.
patent: 3858341 (1975-01-01), Wakabayashi
patent: 3878399 (1975-04-01), Higuchi et al.

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