Definition of aplanat in English:

aplanat

noun ˈaplənatˈapləˌnat

Physics

A reflecting or refracting surface which is free from spherical aberration.
〔物理〕消球差（透）镜
Example sentencesExamples
- The term ‘aplanat’ means that the lens is corrected for coma, an image aberration which Rutten and & van Venroiij discuss very well in their book.
- All six lenses are fully corrected aplanats, so they can be mixed and matched in a focusing or non-focusing configuration to obtain the desired magnification.
- The aplanat is a variation of the simple Abbe, but usually of 3 element design which furnishes a more geometrically perfect cone of light, though its chromatic aberrations are similar to the Abbe's.
- When viewing resolution is less critical, the aplanats offer an economical alternative.
- We do not know what led him to this highly successful design, but it may have been an assembly of two Grubb-type landscape aplanats about a central stop.

Derivatives

aplanatic

adjective

Physics

These locations for which spherical correction has been optimized are called the aplanatic points.
Example sentencesExamples
- The results indicates that the aplanatic hologram lenses are feasible for optical disk applications.
- It is shown to illustrate how a useful lens can be built using the aplanatic point of a sphere despite the fact that it lies within the glass.
- We can apply the same reasoning to rods and transformation of cylindrical diverging wavefront using aplanatic points of the rods.
- The aplanatic condenser is not corrected for color, hence objectionable color fringes are produced around the field of view diaphragm.

Origin

Late 19th century: coined in German from Greek aplanētos, from a- 'not' + planan 'wander'.

Definition of aplanat in US English:

aplanat

nounˈapləˌnat

Physics

A reflecting or refracting surface which is free from spherical aberration.
〔物理〕消球差（透）镜
Example sentencesExamples
- The aplanat is a variation of the simple Abbe, but usually of 3 element design which furnishes a more geometrically perfect cone of light, though its chromatic aberrations are similar to the Abbe's.
- When viewing resolution is less critical, the aplanats offer an economical alternative.
- All six lenses are fully corrected aplanats, so they can be mixed and matched in a focusing or non-focusing configuration to obtain the desired magnification.
- The term ‘aplanat’ means that the lens is corrected for coma, an image aberration which Rutten and & van Venroiij discuss very well in their book.
- We do not know what led him to this highly successful design, but it may have been an assembly of two Grubb-type landscape aplanats about a central stop.

Origin

Late 19th century: coined in German from Greek aplanētos, from a- ‘not’ + planan ‘wander’.

词汇	aplanat
释义	Definition of aplanat in English: aplanat noun ˈaplənatˈapləˌnat Physics A reflecting or refracting surface which is free from spherical aberration. 〔物理〕消球差（透）镜 Example sentencesExamples The term ‘aplanat’ means that the lens is corrected for coma, an image aberration which Rutten and & van Venroiij discuss very well in their book. All six lenses are fully corrected aplanats, so they can be mixed and matched in a focusing or non-focusing configuration to obtain the desired magnification. The aplanat is a variation of the simple Abbe, but usually of 3 element design which furnishes a more geometrically perfect cone of light, though its chromatic aberrations are similar to the Abbe's. When viewing resolution is less critical, the aplanats offer an economical alternative. We do not know what led him to this highly successful design, but it may have been an assembly of two Grubb-type landscape aplanats about a central stop. Derivatives aplanatic adjective Physics These locations for which spherical correction has been optimized are called the aplanatic points. Example sentencesExamples The results indicates that the aplanatic hologram lenses are feasible for optical disk applications. It is shown to illustrate how a useful lens can be built using the aplanatic point of a sphere despite the fact that it lies within the glass. We can apply the same reasoning to rods and transformation of cylindrical diverging wavefront using aplanatic points of the rods. The aplanatic condenser is not corrected for color, hence objectionable color fringes are produced around the field of view diaphragm. Origin Late 19th century: coined in German from Greek aplanētos, from a- 'not' + planan 'wander'. Definition of aplanat in US English: aplanat nounˈapləˌnat Physics A reflecting or refracting surface which is free from spherical aberration. 〔物理〕消球差（透）镜 Example sentencesExamples The aplanat is a variation of the simple Abbe, but usually of 3 element design which furnishes a more geometrically perfect cone of light, though its chromatic aberrations are similar to the Abbe's. When viewing resolution is less critical, the aplanats offer an economical alternative. All six lenses are fully corrected aplanats, so they can be mixed and matched in a focusing or non-focusing configuration to obtain the desired magnification. The term ‘aplanat’ means that the lens is corrected for coma, an image aberration which Rutten and & van Venroiij discuss very well in their book. We do not know what led him to this highly successful design, but it may have been an assembly of two Grubb-type landscape aplanats about a central stop. Origin Late 19th century: coined in German from Greek aplanētos, from a- ‘not’ + planan ‘wander’.
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