Switchable lens/diffuser

Details Switchable lens/diffuser Switchable lens/diffuser

1995-02-24

1997-07-01

Sikes, William L.

Liquid crystal cells, elements and systems

Liquid crystal system

Projector including liquid crystal cell

349112, 359 15, 359599, G02F 11335, G02B 532

Patent

active

056443692

ABSTRACT:
A switchable lens/diffuser including an optical component constructed to form an optical image in cooperation with light directed thereon and a layer of polymer dispersed liquid crystal material having a clear state and a diffusing state, the layer of material being positioned in conjunction with the optical component so that the optical component forms an optical image when the layer of polymer dispersed liquid crystal material is in the clear state and the layer of polymer dispersed liquid crystal material serves as a diffusing screen to form an image in cooperation with the light directed thereon in the diffusing state.

REFERENCES:
patent: 5198912 (1993-03-01), Ingwall et al.
patent: 5245449 (1993-09-01), Ooi et al.
patent: 5299289 (1994-03-01), Omae et al.
patent: 5353133 (1994-10-01), Bernkopf
patent: 5359441 (1994-10-01), Mori et al.
patent: 5473448 (1995-12-01), Yoshinaga et al.
patent: 5477351 (1995-12-01), Takahara et al.
patent: 5528402 (1996-06-01), Parker

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