Design, manufacturing, and testing of a compact annular telescope

Karine Mathieu; Jacques Berthon; Daniel Mouricaud; Jean-Luc Vavrille; Benjamin Daire

doi:10.1117/12.3016938

17 June 2024 Design, manufacturing, and testing of a compact annular telescope

Karine Mathieu, Jacques Berthon, Daniel Mouricaud, Jean-Luc Vavrille, Benjamin Daire

Proceedings Volume 13019, Optical Design and Engineering IX; 1301921 (2024) https://doi.org/10.1117/12.3016938
Event: SPIE Optical Systems Design, 2024, Strasbourg, France

Conference Poster

Abstract

With the aim of constantly reducing the prices and manufacturing times of space optical instruments, CNES has carried out research and development activities to evaluate new optical concepts for medium-resolution imaging applications. In reality, this study had two objectives. The first consisted of defining a disruptive optical architecture to significantly improve the compactness of telescopes. For this, we decided to target annular telescopes, which offer great compactness with a large numerical aperture, very interesting characteristics for small instruments. The second objective sought was to test a new manufacturing process, which will speed up production times. This is why the diamond turning point was chosen to create the prototype. We will therefore first present the optical design compromise between two interesting solutions for imaging applications. Detailed analyses were performed with optical software tools to prepare manufacturing files. In a second part, a description of the finalized prototype will be provided. It will focus on the opto-mechanical principle but also on the manufacturing quality obtained with diamond machining. Finally, we will detail all the characterizations on the prototype with and without sensor: optical performances evaluated in the laboratory as well as a set of images acquired on different realistic scenes. We will conclude and present perspectives for future versions.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Karine Mathieu, Jacques Berthon, Daniel Mouricaud, Jean-Luc Vavrille, and Benjamin Daire "Design, manufacturing, and testing of a compact annular telescope", Proc. SPIE 13019, Optical Design and Engineering IX, 1301921 (17 June 2024); https://doi.org/10.1117/12.3016938

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