Question: What is the name of a German physicist, optical scientist, entrepreneur who aid the foundation of modern optics with Carl Zeiss?
Context: Carl Zeiss (] ), branded as ZEISS, is a German manufacturer of optical systems, industrial measurements and medical devices, founded in Jena, Germany in 1846 by optician Carl Zeiss.  Together with Ernst Abbe (joined 1866) and Otto Schott (joined 1884) they built a base for modern optics and manufacturing.  There are currently two parts of the company, Carl Zeiss AG located in Oberkochen with important subsidiaries in Aalen, Göttingen and Munich, and Carl Zeiss GmbH located in Jena. Carl P. Pulfrich (September 24, 1858 in Burscheid, Rhine Province – August 12, 1927 in Baltic Sea, drowned when his canoe capsized) was a German physicist, noted for advancements in optics made as a researcher for the Carl Zeiss company in Jena around 1880, and for documenting the Pulfrich effect, a psycho-optical phenomenon that can be used to create a type of 3-D visual effect. Optics began with the development of lenses by the ancient Egyptians and Mesopotamians, followed by theories on light and vision developed by ancient Greek philosophers, and the development of geometrical optics in the Greco-Roman world.  The word "optics" is derived from the Greek term "τα ὀπτικά" meaning "appearance, look".  Optics was significantly reformed by the developments in the medieval Islamic world, such as the beginnings of physical and physiological optics, and then significantly advanced in early modern Europe, where diffractive optics began.  These earlier studies on optics are now known as "classical optics".  The term "modern optics" refers to areas of optical research that largely developed in the 20th century, such as wave optics and quantum optics. Carl Zeiss SMT GmbH comprises the Semiconductor Manufacturing Technology business group of ZEISS and develops and produces equipment for the manufacture of microchips.  The company is fully owned by Carl Zeiss AG. Ernst Karl Abbe HonFRMS (23 January 1840 – 14 January 1905) was a German physicist, optical scientist, entrepreneur, and social reformer.  Together with Otto Schott and Carl Zeiss, he laid the foundation of modern optics.  Abbe developed numerous optical instruments.  He was a co-owner of Carl Zeiss AG, a German manufacturer of research microscopes, astronomical telescopes, planetariums and other optical systems. Moritz von Rohr (4 April 1868 – 20 June 1940) was an optical scientist at Carl Zeiss in Jena, Germany. Ernst J. L. Gehrcke (1 July 1878 in Berlin – 25 January 1960 in Hohen-Neuendorf) was a German experimental physicist.  He was director of the optical department at the Reich Physical and Technical Institute.  Concurrently, he was a professor at the University of Berlin.  He developed the Lummer–Gehrcke method in interferometry, he discovered anode rays, and he developed the multiplex interferometric spectroscope for precision resolution of spectral-line structures.  As an anti-relativist, he was a speaker at an event organized in 1920 by the Working Society of German Scientists.  He sat on the board of trustees of the Potsdam Astrophysical Observatory.  After World War II, he worked at Carl Zeiss Jena, and he helped to develop and become the director of the Institute for Physiological Optics at the University of Jena.  In 1949, he began work at the German Office for Materials and Product Testing.  In 1953, he became the director of the optical department of the German Office for Weights and Measures. Paul Rudolph (14 November 1858 – 8 March 1935) was a German physicist who designed the first anastigmatic lens while working for Carl Zeiss.  After World War I, he joined the Hugo Meyer optical company, where he designed most of their cine lenses. Carl Zeiss (11 September 1816 – 3 December 1888) was a German scientific instrument maker, optician and businessman who founded the workshop of Carl Zeiss in 1846 which is still in business today as "Carl Zeiss AG".  Zeiss gathered a group of gifted practical and theoretical opticians and glass makers to reshape most aspects of optical instrument production.  His collaboration with Ernst Abbe revolutionized optical theory and practical design of microscopes.  Their quest to extend these advances brought Otto Schott into the enterprises to revolutionize optical glass manufacture.  The firm of Carl Zeiss grew to one of the largest and most respected optical firms in the world. The Carl-Zeiss-Stiftung (Carl Zeiss Foundation), located in Heidenheim an der Brenz and Jena, Germany, is the sole shareholder of the two companies Carl Zeiss AG and Schott AG.  It was founded by Ernst Abbe and named after his long-term partner Carl Zeiss.  The products of these companies include the classic areas of optics and precision mechanisms, as well as glass (including optical glass), optoelectronics, and glass ceramics.  The statutes of the foundation emphasize the social responsibility of the companies and the importance of a fair treatment of the employees.
Answer: Ernst Abbe