Camphor Patents (Class 106/169.29)
  • Patent number: 10539813
    Abstract: A sky kaleidoscope system includes a polarizing film, a first plastic plate having a first transparent design, and a second plastic plate having a second transparent design. The polarizing film is sandwiched between the first plastic plate and the second plastic plate. The first and second transparent designs are photoelastic and/or light diffracting. The sky kaleidoscope may be held up to the sky and the plastic plates and polarizing film may be looked through to view resulting rainbow colors in the first or second transparent design.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: January 21, 2020
    Inventor: Pamela Saha