Design rules for IR micro cameras based on a single diffractive optical element

M. Piponnier; G. Druart; M. Brizard; N. Guérineau; J.-L. De Bougrenet; J. Primot

doi:10.1117/12.921660

4 May 2012 Design rules for IR micro cameras based on a single diffractive optical element

M. Piponnier, G. Druart, M. Brizard, N. Guérineau, J.-L. De Bougrenet, J. Primot

Proceedings Volume 8429, Optical Modelling and Design II; 842917 (2012) https://doi.org/10.1117/12.921660
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

An InfraRed (IR) cooled camera is generally composed by an optical block (warm lenses outside a dewar) and a detection block (a cooled focal plane array inside the dewar). A minimalist approach to design a compact and robust camera consists in giving the dewar an imaging function by replacing the cold pupil by a Diffractive Optical Element (DOE). In this paper we present different DOE that can be used to design the camera. We present first a pinhole camera that validates this approach but that is limited in radiometric performances and in angular resolution. We replace then the pinhole by a continuously self-imaging DOE, such as the diffractive axicon, to improve both the radiometric performances and the angular resolution. Finally, the MALDA is introduced to improve the performances of the axicon. Diffraction effects and Talbot effect under polychromatic light are exposed for such DOE and two different design rules are derived from those effects to allow the design of a compact camera with dimensions compatible with the size of an industrial dewar. Experimental prototypes are presented and radiometric performances are compared and show the best performances for the MALDA.

Citation Download Citation

M. Piponnier, G. Druart, M. Brizard, N. Guérineau, J.-L. De Bougrenet, and J. Primot "Design rules for IR micro cameras based on a single diffractive optical element", Proc. SPIE 8429, Optical Modelling and Design II, 842917 (4 May 2012); https://doi.org/10.1117/12.921660

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

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
12 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Cameras

Infrared cameras

Diffractive optical elements

Axicons

Transmittance

Point spread functions

Sensors

Show All Keywords

Keywords/Phrases

Search In:

Publication Years