Jules Carpentier
| Jules Carpentier | |
|---|---|
 Jules Carpentier♦ | |
| Born |
30 August 1851 Paris, France |
| Died |
30 June 1921 Joigny, France |
| Nationality | French |
| Occupation | Engineer, Inventor |
Jules Carpentier (1851 – 1921) was a French engineer and inventor.
Jules Carpentier was a student at the French École polytechnique. He bought the Ruhmkorff workshops in Paris when Heinrich Daniel Ruhmkorff died and made it a successful business for building electrical and magnetical devices. From 1890, he started to build photographic and cinematographic cameras. He is the designer of the submarine periscope, and worked at the adjustment of trichromic process of colour photography.
He patented the "Cinématographe", which serves as a film projector and developer in the late 1890s, and built devices from the Lumière Brothers.
Another of his patents, filed in England, was a primary reference of Theodor Scheimpflug, who disclaimed inventing the falsely eponymous Scheimpflug principle.[1]
He died in 1921 in a car accident in Joigny, France.
See also
External links
- (French) Biography by the French École Polytechnique
References
- ↑ Harold M. Merklinger (1996). "Scheimpflug’s Patent" (PDF).
Scheimpflug himself disclaimed inventing the rule that now bears his name. The Scheimpflug Principle (or rule or condition) provides guidance on how a camera lens and/or back should be tilted when focusing upon a plane that is not parallel to the film. This short article is intended to provide a little historical background and technical information about Scheimpflug and his patent. If Scheimpflug did not invent this rule, who did? Scheimpflug cites only one reference, and that is to the British Patent of Monsieur Jules Carpentier of Paris. In 1901 Carpentier had patented an enlarger for correcting converging verticals. Carpentier made this claim: "I have investigated the law which governs the correlation between the inclination of the plane of the negative and that of the sensitized surface to that of the optical axis of the lens...and I find that the relationship is this:—If the two planes are sufficiently prolonged they must intersect in the plane perpendicular to the said axis and passing through the optical center of the lens.
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