English optician, elder son of John Dollond (1706-1761). His keen entrepreneurial spirit and prolific collaboration with his father enabled him to open a workshop for the construction of scientific instruments in the Strand, at the heart of London. His main claim to fame was as a lens-maker, although he never matched his father's theoretical expertise in optics. His business was very successful and the Dollonds became among the most famous and respected instrument-makers in Europe. Had contacts with Felice Fontana (1730-1805) when Fontana was Director of the Museo di Fisica e Storia Naturale in Florence.