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Ocular lens

  • US 9,709,826 B2
  • Filed: 03/27/2015
  • Issued: 07/18/2017
  • Est. Priority Date: 09/28/2010
  • Status: Expired due to Fees
First Claim
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1. An ocular lens comprising an optical filter configured to change a chromaticity of light impinging on the ocular lens so as to transmit a filtered light to an eye of a viewer, the filtered light having a proportion of blue light that is higher than a proportion of red light, whereinthe filtered light has a proportion of green light,the blue light has a peak wavelength at about 480 nm within a range of blue wavelengths from about 460 nm to about 500 nm and the green light has a peak wavelength at about 550 nm within a range of green wavelengths from about 530 nm to about 570 nm, andthe proportion of blue light is between about 80% and about 90%, the proportion of green light is between about 10% and about 20%, and the proportion of red light is less than about 1%.

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