Manufacturing of linear variable filters with straight iso-thickness lines

Laetitia Abel-Tiberini; Frédéric Lemarquis; Gérard Marchand; Luc Roussel; Gérard Albrand; Michel Lequime

doi:10.1117/12.624779

4 October 2005 Manufacturing of linear variable filters with straight iso-thickness lines

Laetitia Abel-Tiberini, Frédéric Lemarquis, Gérard Marchand, Luc Roussel, Gérard Albrand, Michel Lequime

Author Affiliations +

Proceedings Volume 5963, Advances in Optical Thin Films II; 59630B (2005) https://doi.org/10.1117/12.624779
Event: Optical Systems Design 2005, 2005, Jena, Germany

Abstract

Linear variables filters are band-pass multilayer coatings manufactured with a thickness gradient that allows a significant wavelength shift of the centring wavelength of the filter according to the point that is illuminated. In case such a filter is associated with a 2D matrix detector in order to form a compact spectrometer, iso-thickness lines must be as straight as possible, perpendicularly to the thickness gradient. To answer this problem, we developed a masking mechanism that combine the classical rotation movement of substrates and a translation movement for the mask, this last movement being induced during the rotation by the mean of a cam. Thickness gradient can be freely adjusted according to specifications, while transverse uniformity is 99.9%.

Citation Download Citation

Laetitia Abel-Tiberini, Frédéric Lemarquis, Gérard Marchand, Luc Roussel, Gérard Albrand, and Michel Lequime "Manufacturing of linear variable filters with straight iso-thickness lines", Proc. SPIE 5963, Advances in Optical Thin Films II, 59630B (4 October 2005); https://doi.org/10.1117/12.624779

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE