Invertible display with a kaleidoscope

Details Invertible display with a kaleidoscope Invertible display with a kaleidoscope

1991-12-13

1992-12-15

Wintercorn, Richard A.

Optical: systems and elements

Kaleidoscope

Including particles loosely housed for agitation

G02B 2300

Patent

active

051722704

ABSTRACT:
A kaleidoscope utilizing birefringent material in the form of shaped pieces in a liquid with the pieces passing between sheets of polarizing material where the container holding the pieces and liquid is in the form of a tube or tubes, or is flat and elongated, or consists of circular plates held together by a ring, and the container can be inverted or rotated. The shaped pieces will have a higher or lower density than the liquid in which they are immersed, or may be a mixture of both densities and both rise and fall in the container.

REFERENCES:
patent: 2423371 (1947-07-01), Carranza
patent: 2954723 (1960-10-01), Dunn
patent: 3674333 (1972-07-01), Mandel
patent: 3748013 (1973-07-01), Orans
patent: 3841730 (1974-10-01), Karelitz
patent: 3990772 (1976-11-01), Knott
patent: 4231634 (1980-11-01), Gantz et al.
patent: 4653843 (1987-03-01), Karelitz
patent: 4740046 (1988-04-01), MacCarthy
patent: 4742439 (1988-05-01), Choate
patent: 5029954 (1991-07-01), Eilrich et al.

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