George Bass (optician)


George Bass was an optician known to have made an achromatic doublet around 1733.

The specifications for the lens elements were given by Chester Moore Hall. According to Hoyle,[1] Hall wished to keep his work on the achromatic lenses a secret and contracted the manufacture of the crown and flint lenses to two different opticians, Edward Scarlett and James Mann.[2] They in turn sub-contracted the work to the same person, George Bass. He realized the two components were for the same client and, after fitting the two parts together, noted the achromatic properties. Not being as reticent as Hall, Bass let others know of the lens's properties and the method of making an achromatic doublet spread.


  1. ^ Fred Hoyle, Astronomy; A history of man's investigation of the universe, Rathbone Books Limited, 1962, LCCN 62-14108
  2. ^ J. A. B. "Peter Dollond answers Jesse Ramsden". Sphaera 8. Museum of the History of Science, Oxford. Retrieved November 27, 2017.- A review of the events of the invention of the achromatic doublet with emphasis on the roles of Hall, Bass, Jesse Ramsden, John Dollond and others.