Anastigmat
Definition
A complex optical system or photographic lens, composed of an assembly of multiple lenses with different refractive indices, mathematically calculated to simultaneously correct astigmatism, field curvature, and chromatic aberration. This type of high-precision lens allows perfect and uniform focusing of light rays across the entire surface of the focal plane, ensuring extremely sharp and undistorted images both at the center and the edges.
Bilingual Equivalents
- Anastigmat
- Anastigmatic lens
Grammatical & Source Details
| Inflection Type | Neuter noun, regular structural plural variations in technical manuals. |
| Formation | Etymologically built from the Greek prefix 'an-' (absence of) combined with 'astigmatism', signifying a system free of focal points errors. |
| Spelling / Pronunciation | [æ.nə.ˈstɪɡ.mæt] |
| Source | Encyclopedia of Photographic Technology and Applied Lens Design |
Contextual Usage Examples
RO: Acel aparat foto de epocă folosește un anastigmat faimos din sticlă optică de Jena pentru portrete perfect clare.
EN: That vintage camera uses a famous anastmat made of Jena optical glass for perfectly sharp portraits.
RO: Inginerul a calibrat manual noul anastigmat înainte de a-l monta pe telescopul de cercetare astronomică.
EN: The engineer manually calibrated the new anastigmat before mounting it on the astronomical research telescope.
RO: Deși costisitor, un anastigmat de calitate reduce la minimum timpul necesar editării ulterioare a fotografiilor comerciale.
EN: Although expensive, a quality anastigmat minimizes the time required for subsequent editing of commercial photographs.
Idioms & Phrases
Obiectiv anastigmat clasic / Classic anastigmat lens
RO: Configurație istorică de lentile simetrice utilizată pe scară largă la începutul secolului XX în arta fotografică.
EN: A historical symmetric lens configuration widely used at the beginning of the 20th century in photographic art.
Anastigmat cu focalizare rapidă / Fast-focusing anastigmat
RO: Sistem optic performant dotat cu diafragmă largă ce permite captarea imaginilor clare în condiții de luminozitate scăzută.
EN: A high-performance optical system equipped with a wide aperture that allows capturing sharp images in low light conditions.
Grup optic anastigmat / Anastigmat optical group
RO: Segment structural din interiorul unui obiectiv modern responsabil exclusiv de alinierea razelor marginale.
EN: A structural segment inside a modern lens responsible exclusively for aligning the marginal light rays.
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