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  2. Dichroic prism - Wikipedia

    en.wikipedia.org/wiki/Dichroic_prism

    A trichroic prism assembly Dichroic prism. A dichroic prism is a prism that splits light into two beams of differing wavelengths (colour). [1] A trichroic prism assembly combines two dichroic prisms to split an image into 3 colours, typically as red, green and blue of the RGB colour model.

  3. Porro prism - Wikipedia

    en.wikipedia.org/wiki/Porro_prism

    Porro prisms are most often used in pairs, forming a double Porro prism. A second prism rotated 90° with respect to the first, is placed such that light will traverse both prisms. The net effect of the prism system is a beam parallel to but displaced from its original direction, with the image rotated 180°.

  4. Louvre Pyramid - Wikipedia

    en.wikipedia.org/wiki/Louvre_Pyramid

    The Louvre Pyramid (French: Pyramide du Louvre) is a large glass-and-metal structure designed by the Chinese-American architect I. M. Pei.The pyramid is in the main courtyard (Cour Napoléon) of the Louvre Palace in Paris, surrounded by three smaller pyramids.

  5. Beyond the Black Rainbow - Wikipedia

    en.wikipedia.org/wiki/Beyond_the_Black_Rainbow

    The institute's plethora of reflecting surfaces – the walls in the hallways, the giant piece of glass in the therapy room, the infinity-mirrored Sentionaut room, Margo's glasses [16] – might somewhat hint at this idea. To many ancient cultures, the mirror was a symbol of self-awareness, consciousness and intelligence, but also a source of ...

  6. List of optometric abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_optometric...

    Prism dioptre D: Dioptres DC: Dioptres cylinder DNA: Did not attend DOB: Date of birth DS: Dioptres sphere DV: Distance vision DVD: Dissociated vertical deviation EF: Eccentric fixation FB: Foreign body FD: Fixation disparity FF: Foveal fixation FHG: Family history of glaucoma: FMH: Family medical history FOH: Family ocular history F/U: Follow ...

  7. Cauchy's equation - Wikipedia

    en.wikipedia.org/wiki/Cauchy's_equation

    The most general form of Cauchy's equation is = + + +,where n is the refractive index, λ is the wavelength, A, B, C, etc., are coefficients that can be determined for a material by fitting the equation to measured refractive indices at known wavelengths.

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