Patent · US Active

Rotating spectral display device

US9013775B2 · kind B2 · utility

3Cited by
5References
7Claims
0Family size

Inventor

Key dates

Filing dateDec 28, 2012
Grant dateApr 21, 2015
Priority date—
Expiry dateDec 31, 2033

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B27/08
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A solar powered rainbow-making device produces a visual display that is created by the interplay of light and a light refractive element that form constantly changing patterns from a rotating crystal. The rotating display device includes a circular-shaped refractive element that is mounted on a base and is turned by a motor driven transmission gear train. The crystal rotates about a horizontal axis as sunlight is transformed into a color spectrum that moves in a circular fashion. The color images can include a plurality of distinct rainbow images that are projected onto the walls and other structures in the immediate environment.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.