Optical: systems and elements – Kaleidoscope – Including particles loosely housed for agitation
Patent
1990-06-15
1992-07-21
Wintercorn, Richard A.
Optical: systems and elements
Kaleidoscope
Including particles loosely housed for agitation
G02B 2300
Patent
active
051317346
ABSTRACT:
A kaleidoscope apparatus comprising an opaque container having an objective end and a viewing end, at least two reflecting surfaces within said container, an opening at the viewing end, and an objective within said objective end, the improvement comprising:
REFERENCES:
patent: 1914562 (1933-06-01), Freeland
patent: 2727426 (1955-12-01), Lopez
patent: 3748013 (1973-07-01), Orans
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