Display devices
OwnerMalcolm G. Witteyinventor
Life of this patent
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Abstract
A display system comprises a cathode ray tube (10) including an electron gun (12) for producing a modulated beam of electrons and a mechanism (14, 15) for focusing the beam of electrons and scanning it along a strip (17) of phosphor to produce a linear display. An optical scanning mechanism comprising a vibrating first mirror (26) and a second mirror (30) mounted parallel to the first mirror (26) between which an image of the linear display may be reflected several times, is provided to enable viewing of successive images of the linear display in axially aligned juxtaposed relationship, to produce a two dimensional display.
Claims8
A display system comprising a cathode ray tube including an electron gun, a strip of phosphor, means for focusing a beam of electrons emitted from the gun onto the strip of phosphor, means for scanning the beam of electrons along the strip of phosphor and means for modulating the beam of electrons emitted from the gun and thus the excitation of the strip of phosphor to provide a linear display;
- and optical scanning means for viewing successive images of the linear display in axially aligned juxtaposed relationship, to produce a two dimensional display, the optical scanning means including first and second mirrors mounted for angular vibrational movement about parallel axes defined by opposite edges of each mirror, the mirrors being interconnected at positions equally spaced from their pivotal axes, so that angular vibrational movement of one mirror will be transmitted to the other mirror but movement of one mirror will be in the opposite angular direction to that of the other mirror, a transducer being provided to vibrate the mirrors, and means for focusing the image of the linear display at an angle onto the first mirror so that it is reflected onto the second mirror and back onto the first mirror.
Dependencies are inferred from the claim text.