Definitions

from The Century Dictionary.

  • noun In optics, a lens or system of lenses corrected for chromatic aberration.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A lens that imparts little color; a lens that is achromatic.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

By shortening of achromatic.

Support

Help support Wordnik (and make this page ad-free) by adopting the word achromat.

Examples

  • PS: Vision in a complete achromat: a personal account is a very interesting feature on achromatopsia by vision scientist Knut Nordby.

    Not-so-new colour recognition Ray Girvan 2005

  • The magician's tale / David Hunt —An achromat suffering from total color blindness, Kay possesses a vision that informs her world and sharpens her skills as talented photographer.

    3/16: New at the library this week 2006

  • The magician's tale / David Hunt —An achromat suffering from total color blindness, Kay possesses a vision that informs her world and sharpens her skills as talented photographer.

    Archive 2006-03-01 2006

  • An achromat brings those two wavelengths to the same focus, with other wavelengths very slightly out of focus.

    MAKE Magazine 2009

  • You can, for example, buy semi-plan apochromatic objectives and plan achromat objectives.

    MAKE Magazine 2009

  • An apochromat is corrected for three specific wavelengths of light -- usually red, green, and blue -- and brings those three wavelengths to the same focus, providing slightly sharper images than an achromat.

    MAKE Magazine 2009

  • The first section on the knowledge argument has a number of special treats: Knut Nordby, the achromat color scientist, with a piece on what it's like to be in Mary's situation;

    fragments of consciousness 2008

  • The first section on the knowledge argument has a number of special treats: Knut Nordby, the achromat color scientist, with a piece on what it's like to be in Mary's situation;

    fragments of consciousness 2008

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.