/ /

  • linkedin
  • Increase Font
  • Sharebar

    Sunwear and the science of light

    How new lens technology enhances your patients’ visual experience


    Dimensions of color

    Color consists of complex wavelength information as the human eye converts the full spectrum of light into three value systems of primary colors in order to simplify processing and rendering of that information. The three color attributes or dimensions are:

    Hue: Basic colors, such as red, green, and blue

    Saturation: The vividness or dullness of the color

    Brightness: The lightness or darkness of the color

    Controlling the transmission curve’s rise relative to wavelength, which determines hue, can enhance color perception. For example, allowing an even and generous amount of red to be transmitted results in a brighter, vibrant red. Maximum transmission of green at its peak value (555 nm) will result in a darker and enhanced green.

    Colors can be made more vivid by controlling the purity of the transmission curve. By giving the curve’s shape an enhanced distinctness, saturation is improved. If the curve is not distinct, then colors will blend and become dull. Color enhancement and vividness can be achieved by increasing saturation. Some colors may require more saturation for greater balance and distinction.

    Related: How digital devices are affecting vision

    Greater color enhancement can be achieved by selective transmission of good colors and nontransmission, or absorption, of bad colors that are known to create color confusion. Yellow light transmits in a very short range between 575 nm to 585 nm; however, it is one of the most disruptive wavelengths and causes to the colors adjacent to it, red and green, to become less vivid. Allowing the right amount of red and green to transmit while absorbing yellow requires complex filters, but when achieved the result is a lens with the highest color enhancing properties that create a “wow” effect for the wearer.

    The brightness we perceive is determined by the amplitude, or height, of the curve’s waves. Optimization of a specific color’s brightness can be achieved by managing the right amount of transmission. Increasing the transmission of a color relative to other colors will result in a lightening effect, and reducing a color’s transmission will result in a darkening effect.

    Next: Science meets sunglasses

    Renato Cappuccitti
    Renato Cappuccitti is the director of sales for the optical division of Costa Sunglasses.

    1 Comment

    You must be signed in to leave a comment. Registering is fast and free!

    All comments must follow the ModernMedicine Network community rules and terms of use, and will be moderated. ModernMedicine reserves the right to use the comments we receive, in whole or in part,in any medium. See also the Terms of Use, Privacy Policy and Community FAQ.

    • [email protected]
      Thanks for sharing this informative post. Protecting your eyes from solar radiation is a must. Long term excessive exposure to these harmful UV rays has more serious effects. Therefore, from applying sunscreen to protect your skin from the harsh rays of the sun, be sure to protect your eyes by wearing sunglasses with additional UV protection to avoid eye damages. To protect your eyes or skin, you need special care and more tips. For more information you can visit elsunglasses.com over the web.

    Optometry Times A/V