Iris diaphragm device

Structure of mechanism
Function	The motion device described in the patent relates to a iris diaphragm device for opening and closing the aperture. The iris diaphragm device is based on a linkage with 4 links and 4 joints, which is driven by a rotational actuator. The degree of freedom of the mechanism is F = 1.
Dimension of mechanism	planar
Number of links	4
Drive movement	Rotation
Output movement	Frame motion
Degree of freedom	1
Fundamental mechanism	Link containing mechanism
Number of inputs	1
Number of followers	1
Revolution ability	no
Revolution ability of input link	no
Relative position between drive and output	parallel

Guidance function
Direction of the path	reversed direction
Orientation of output link	general
Trace of a dedicated point on follower	Open trace
Dimension of mechanism	planar
Input reference	yes
Progress of orientation respecting output link	miscellaneous

Collections

Link containing mechanism

Permanent links

DMG-Lib		https://www.dmg-lib.org/dmglib/handler?mcdsc=2693025
Europeana		http://www.europeana.eu/portal/record/2020801/dmglib_handler_mcdsc_2693025.html