Picture display device with microlens array and beam refracting element array on each side or opposite reflector
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United States of America Patent
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Mar 24, 1998
Grant Date -
N/A
app pub date -
Oct 31, 1996
filing date -
Nov 2, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Picture display device (1) comprising an illumination system (3) and a picture display panel (7) which is provided with a matrix of pixels. The picture display panel (7) may be a transmissive or a reflective picture display panel. In the case of a transmissive picture display panel, a first microlens array (19) is arranged at the illumination side of the picture display panel (7), and a second microlens array (21) is arranged at the side of the picture display panel (7) remote from the illumination system (3). In the case of a reflective picture display panel, the picture display device (1) comprises only one microlens array (61) which is arranged between the illumination system (3) and the picture display panel (7). In both cases, the number of lenses (23, 25; 63) of a microlens array (19, 21; 61) corresponds to the number of pixels (27) of the picture display panel (7). A beam-refracting element (37, 39; 67), by means of which a beam waist is realized at the area of the picture display panel (7), corresponds to each lens (23, 25; 63) of a microlens array (19, 21; 61).
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Cited Art Landscape
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