Compact four element triple field-of-view MWIR optical module

Prabhakar Gentyala; Sadanandam Malyala; Rajesh Adepu

doi:10.1117/12.2580337

8 November 2020 Compact four element triple field-of-view MWIR optical module

Prabhakar Gentyala, Sadanandam Malyala, Rajesh Adepu

Proceedings Volume 11525, SPIE Future Sensing Technologies; 1152527 (2020) https://doi.org/10.1117/12.2580337
Event: SPIE Future Sensing Technologies, 2020, Online Only

Conference Poster

Abstract

Infrared systems operating in mid wave infrared band (MWIR) are using in a wide variety of coastal and border surveillance applications. This paper discloses about the need of triple FOV MWIR system for surveillance applications. Initial calculation to determine the first order parameters of Narrow FOV, Middle FOV and Wide FOV positions was discussed. Mechanical compensation approach along with the axial motion of lenses is used to obtain the triple FOVs. Configuration constraints are mentioned, limitations of substitute approaches explored, and characteristics of the chosen design are presented. Limited optical lenses in the optical module have an advantage to enhance the transmission of the system to achieve better ranges. To get better ranges the triple FOV systems is designed using only four lenses. Design of compact Triple FOV MWIR lens module demands at least four lens groups. To get the systems in compact form fit, for each group only one lens element has been used. This paper also discloses the optical performance analysis parameters aberrations curves and polychromatic modulation transfer function plots at all fields of views. The effect of lens performance by the rate of change of temperature in terms of various seasons was analyzed and active thermal compensation method was discussed. The design and experiment results indicate that image quality of the optical system is acceptable performance in all the fields of view and system should be applied in many civilian and military applications.

Citation Download Citation

Prabhakar Gentyala, Sadanandam Malyala, and Rajesh Adepu "Compact four element triple field-of-view MWIR optical module", Proc. SPIE 11525, SPIE Future Sensing Technologies, 1152527 (8 November 2020); https://doi.org/10.1117/12.2580337

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