Louis Jules Dubosq was a French instrument maker, inventor, and pioneering photographer. He was known in his time, and is remembered today, for the high quality of his optical instruments.

Life and work

Duboscq was born at Seine-et-Oise in 1817. He was apprenticed in 1834 to Jean-Baptiste-François Soleil (1798–1878), a prominent instrument maker, and he married one of Soleil's daughters, Rosalie Jeanne Josephine, in 1839.

Among the instruments Duboscq built were a stereoscope, a colorimeter

Colorimeter (chemistry)

Not to be confused with a calorimeter.A colorimeter is a device used in colorimetry. In scientific fields the word generally refers to the device that measures the absorbance of particular wavelengths of light by a specific solution...

 , a polarimeter

Polarimeter

A polarimeter is a scientific instrument used to measure the angle of rotation caused by passing polarized light through an optically active substance....

, and a heliostat

Heliostat

A heliostat is a device that includes a mirror, usually a plane mirror, which turns so as to keep reflecting sunlight toward a predetermined target, compensating for the sun's apparent motions in the sky. The target may be a physical object, distant from the heliostat, or a direction in space...

.

External links

• Louis Jules Duboscq