Definition of apochromat in English:

apochromat

nounˌapəˈkrəʊmatˈapəkrəmatˌapəˈkrōmat

Physics

A lens or lens system that reduces spherical and chromatic aberration.
〔物理〕复消色差透镜
Example sentencesExamples
- Higher order spherical aberration in apochromats is a result of strongly curved lens surfaces.
- A few 9-inch and 10-inch apochromats were sold to Universities and rich individuals, the design details being kept secret.
- There are now a few apochromats on the market that are comparable in price to similar, high-end achromats.
- The biggest problem with early apochromats, other than their sizable cost and complexity, was light loss.
- But labels can be misleading; just as there are better quality achromats, not all apochromats are created equal.

Derivatives

apochromatic

adjective apəkrəˈmatɪkˌæpəkroʊˈmædɪk

Physics

Digital video doesn't have apochromatic aberration; on film, red, green, and blue do not focus at the same plane, so when you shoot film, green and red are very close together but blue is fairly far out.
Example sentencesExamples
- In 1868 he invented the apochromatic lens system for the microscope.
- The apochromatic lens, therefore, corrects for chromatic aberration to a greater degree than does an achromatic lens.
- I hope the following history of the apochromatic lens designs made by Roland Christen of Astro-Physics is of some interest to the readers.

Origin

Early 20th century: from apo- + chromatic.

Definition of apochromat in US English:

apochromat

nounˌapəˈkrōmat

Physics

A lens or lens system that reduces spherical and chromatic aberration.
〔物理〕复消色差透镜
Example sentencesExamples
- The biggest problem with early apochromats, other than their sizable cost and complexity, was light loss.
- Higher order spherical aberration in apochromats is a result of strongly curved lens surfaces.
- There are now a few apochromats on the market that are comparable in price to similar, high-end achromats.
- But labels can be misleading; just as there are better quality achromats, not all apochromats are created equal.
- A few 9-inch and 10-inch apochromats were sold to Universities and rich individuals, the design details being kept secret.

Origin

Early 20th century: from apo- + chromatic.

词汇	apochromat
释义	Definition of apochromat in English: apochromat nounˌapəˈkrəʊmatˈapəkrəmatˌapəˈkrōmat Physics A lens or lens system that reduces spherical and chromatic aberration. 〔物理〕复消色差透镜 Example sentencesExamples Higher order spherical aberration in apochromats is a result of strongly curved lens surfaces. A few 9-inch and 10-inch apochromats were sold to Universities and rich individuals, the design details being kept secret. There are now a few apochromats on the market that are comparable in price to similar, high-end achromats. The biggest problem with early apochromats, other than their sizable cost and complexity, was light loss. But labels can be misleading; just as there are better quality achromats, not all apochromats are created equal. Derivatives apochromatic adjective apəkrəˈmatɪkˌæpəkroʊˈmædɪk Physics Digital video doesn't have apochromatic aberration; on film, red, green, and blue do not focus at the same plane, so when you shoot film, green and red are very close together but blue is fairly far out. Example sentencesExamples In 1868 he invented the apochromatic lens system for the microscope. The apochromatic lens, therefore, corrects for chromatic aberration to a greater degree than does an achromatic lens. I hope the following history of the apochromatic lens designs made by Roland Christen of Astro-Physics is of some interest to the readers. Origin Early 20th century: from apo- + chromatic. Definition of apochromat in US English: apochromat nounˌapəˈkrōmat Physics A lens or lens system that reduces spherical and chromatic aberration. 〔物理〕复消色差透镜 Example sentencesExamples The biggest problem with early apochromats, other than their sizable cost and complexity, was light loss. Higher order spherical aberration in apochromats is a result of strongly curved lens surfaces. There are now a few apochromats on the market that are comparable in price to similar, high-end achromats. But labels can be misleading; just as there are better quality achromats, not all apochromats are created equal. A few 9-inch and 10-inch apochromats were sold to Universities and rich individuals, the design details being kept secret. Origin Early 20th century: from apo- + chromatic.
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