Large optical disk and semi-circular lens

Structure of mechanism
Function	This small optical apparatus contains a metal support for holding a lamp. It has a graduated disc on which the diopters are placed. Each diopter is held in place by a screw in its centre. The disc can turn, and it is thus possible to measure the angles formed by the incident, refracted and reflected rays. Here the device is mounted with a semi-circular prism.
Dimension of mechanism	planar
Drive movement	other
Output movement	others
Revolution ability	yes
Revolution ability of input link	others
Relative position between drive and output	Other

Transfer function
Output motion	miscellaneous

Application
Examples of application	This optical test apparatus is used to study the behaviour of light passing through a diopter. It was used by future teachers in their studies at the Men's and Women's teacher training schools in Clermont-Ferrand, now the IUFM (University Teacher Training Institute).

Permanent links

DMG-Lib		https://www.dmg-lib.org/dmglib/handler?mcdsc=2868025
Europeana		http://www.europeana.eu/portal/record/2020801/dmglib_handler_mcdsc_2868025.html