Pattern generating entertainment device

Details Pattern generating entertainment device Pattern generating entertainment device

1979-03-06

1980-04-01

Engle, Samuel W.

Illumination

Light source and modifier

Laser type

350 69, 362298, 362346, 362811, F21K 100, F21V 700, G02B 2717

Patent

active

041964616

ABSTRACT:
A collimated light source, preferably coherent, is directed at an optical system comprising a plurality of controllably rotatable mirrors, the source going from one to the next in seriatim, and each mirror being mounted a small number of degrees "off" the optical axis, so as to oscillate upon rotation. With the rotational speed of each mirror individually controllable, a substantially infinite number of patterns can be generated. Further variations in pattern generation can be achieved with a beam clipper, pulse modulation by an analog (e.g. audio) signal, and/or other known beam-modifying devices. A preferred embodiment is adapted for entertainment purposes and employs a low-power laser and three mirrors. Other applications include pattern-recognition testing of individuals for optometric or psychological purposes.

REFERENCES:
patent: 2758502 (1956-08-01), Scott
patent: 3609339 (1971-09-01), Smith
patent: 3619028 (1971-11-01), Keene
patent: 3757106 (1973-09-01), Bau
patent: 4154507 (1979-05-01), Barr

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