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US 5,057,827 AGranted
Means and method for producing an optical illusion
OwnerFred E. Nobile, Richard V. Baxter, Jr.inventors
Life of this patent
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Abstract
As a rotary member is rotated, light images are produced in a radial direction from the rotary member. The light images are produced in time or position division multiplexed fashion so that, although at any given instant, only a portion of an entire image is actually generated, due to the light persistence of an observer's eye, the observer will observe an entire image about the rotary member.
Claims7
An apparatus for producing an optical illusion of an image, comprising:
- a) light image means for producing a series of light images, said light image means comprising a surface of liquid crystal material having a three-dimensional characteristic and an energy emitting device, said liquid crystal material being addressable by said energy emitting device such that said surface acts as a light valve;
- b) rotary means for carrying and rotating said energy emitting device;
- and
- c) drive circuit means coupled to said light energy emitting device for driving said light image means in time or position division multiplexed fashion in accordance with the rotational position of said energy emitting device relative to a fixed point.
1 more element
Dependencies are inferred from the claim text.