Picture display device with microlens array and beam refracting

Details Picture display device with microlens array and beam refracting Picture display device with microlens array and beam refracting

1996-10-31

1998-03-24

Gross, Anita Pellman

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349 57, 349 62, G02F 11335

Patent

active

057318573

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).

REFERENCES:
patent: 5396350 (1995-03-01), Beeson et al.
patent: 5398125 (1995-03-01), Willett et al.
patent: 5428468 (1995-06-01), Zimmerman et al.
patent: 5473453 (1995-12-01), Kurematsu
patent: 5555109 (1996-09-01), Zimmerman et al.

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