A novel, graphical method to analyze optical scanners with Risley prisms

Virgil-Florin Duma

doi:10.1117/12.2599186

1 August 2021 A novel, graphical method to analyze optical scanners with Risley prisms

Virgil-Florin Duma

Proceedings Volume 11830, Infrared Remote Sensing and Instrumentation XXIX; 118300F (2021) https://doi.org/10.1117/12.2599186
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

The graphical method we develop is presented for scanners with two rotational Risley prisms, in an analysis that considers all system parameters: angles, refractive indexes, and apertures of the prisms, rotational speeds, distance between prisms, as well as from the scanner to the target plane. Marshall’s parameters are also used: k, ratio of the angles of the prisms; M, ratio of the rotational speeds. The scan patterns of the different systems are simulated using a mechanical design program, CATIA V5R20 and basic prisms equations. The advantages of the method are: exact scan patterns are obtained, in contrast with approximative methods (e.g., using the paraxial approximation); the method is simple, fast, and easy-to-use, in contrast to (rather complicated) analytic approaches. Rules-of-thumb to design such scanners are extracted from the analysis. Experimental validation and a discussion on perspectives of Risley prisms conclude the study.

Conference Presentation

Citation Download Citation

Virgil-Florin Duma "A novel, graphical method to analyze optical scanners with Risley prisms", Proc. SPIE 11830, Infrared Remote Sensing and Instrumentation XXIX, 118300F (1 August 2021); https://doi.org/10.1117/12.2599186

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