Abstract: The invention relates to a Fabry-Perot interferometer and a method for producing the same. More specifically, the invention relates to Fabry-Perot interferometers which are controllable with one or several actuators, such as piezoelectric, electrostrictive or flexoelectric actuators. In prior art technology there is a problem to achieve a sufficiently small and uniform gap between mirrors. In the present invention an intermediate structure (85a, 85b, 95a, 95b, 81a, 81b, 91a, 91b, 98a, 98b) is used between a mirror and an actuator or between two mirrors. The method of production also includes measuring the width distribution of the gap in several phases, and providing pre-actuation of actuators.
Type:
Grant
Filed:
May 8, 2013
Date of Patent:
March 7, 2017
Assignee:
TEKNLOGIAN TUTKIMUSKESKUS VTT OY
Inventors:
Tapani Antila, Jussi Mäkynen, Christer Holmlund, Jarkko Antila, Jyrki Ollila, Heikki Saari