lens Comparison Table

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lens comparison table

Subject has definition

achromatic lens Lens (or combination of lenses) that brings different wavelenghts within a ray of light to a single focus, thus overcoming chromatic aberration. It was first successfully made by Joseph von Fraunhofer.

aplanatic system A system of three lenses which, taken together, correct for spherical aberration, chromatic aberration, and coma.

field lens A lens placed in or near the focal plane of a telescope to create an image of the primary mirror inside the instrument.

Subject	has definition
achromatic lens	Lens (or combination of lenses) that brings different wavelenghts within a ray of light to a single focus, thus overcoming chromatic aberration. It was first successfully made by Joseph von Fraunhofer.
aplanatic system	A system of three lenses which, taken together, correct for spherical aberration, chromatic aberration, and coma.
field lens	A lens placed in or near the focal plane of a telescope to create an image of the primary mirror inside the instrument.

Next wavefront modifier: mirror Up: wavefront modifier Previous wavefront modifier: focal reducer