Chester Moore Hall (9 December 1703, Leigh, Essex, England – 17 March 1771, Sutton) was a British lawyer and inventor who produced the first achromatic lenses in 1729 or 1733 (accounts differ).
He used the achromatic lens to build the first achromatic telescope, a refracting telescope free from chromatic aberration (colour distortion).
[4] The design had two elements, a crown and flint glass, that brought two wavelengths of light to a focus.
[5] Chester is noted as having made the first twin color corrected lens in 1730.
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