发明授权
US3566602A Optical display digital watch 失效
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Optical display digital watch
摘要:
THE WATCH HAS HOUR AND MINUTE WHEELS DRIVEN BY A MOVEMENT, THE WHEELS CARRYING RESPECTIVE HOUR AND MINUTE INFORMATION ON ANNULAR AREAS THEREABOUT. A DISPLAY WINDOW IS PROVIDED THROUGH THE UPPER FACE OF THE WATCH AT AN ANGLE TO THE PLANE OF THE WATCH. CURVED, FUSETAPERED, FIBER OPTICAL BUNDLES ARE PROVIDED FOR TRANSMITTING LIGHT CARRYING THE TIME INFORMATION ON THE WHEELS TO AN IMAGE SURFACE ADJACENT THE DISPLAY WINDOW WHEREBY, AS THE WHEELS ROTATE, A DIGITAL TIME READOUT IS DISPLAYED IN THE WINDOW. IN ONE FORM, THE WHEELS ARE PROVIDED WITH LUMINOUS TIME INDICIA. IN ANOTHER FORM, A RADIOACTIVE LIGHT SOURCE IS CARRIED WITHIN THE WATCH CASING TO ILLUMINATE THE TIME INFORMATION ON THE WHEELS FOR DIGITAL TIME DISPLAY UNDER DARK OR SEMIDARK CONDITIONS. IN A FURTHER EMBODIMENT, AN OPTICAL BAR SEGMENT IN THE GENERAL SHAPE OF A SQUARE FIGURE 8 AND CODED TIME INDICIA ON THE WHEELS COOPERATE TO PROVIDE A DIGITAL TIME READOUT.
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