Information om | Engelska ordet APOCHROMATIC

Exempel på hur man kan använda APOCHROMATIC i en mening

• An apochromat, or apochromatic lens (apo), is a photographic or other lens that has better correction of chromatic and spherical aberration than the much more common achromat lenses.
• Tele Vue Optics is a Chester, New York-based astronomical optics company known primarily for its premium brand of speciality eyepieces and apochromatic refractor telescopes.
• Abnormal dispersion is required to design apochromatic lenses; in contrast to the achromatic doublets, which converge blue and red wavelengths, apochromats converge focus of three or more wavelengths.
• The main telescope technologies during this period were refractors with non-achromatic objectives (single lens), speculum metal reflectors, refractors with achromatic doublets objective (doublet lens), and apochromatic triplets (after 1760s) objectives.
• achromatic refracting telescopes with apertures 75, 100 and 125 mm, apochromatic refracting telescopes on plain glasses 125 and 150 mm, classical apochromats — refractors 200 mm;thumb.

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