Hyperspectral imaging using a Linear Variable Filter (LVF) based ultra-compact camera

Thomas D. Rahmlow Jr.; William Cote; Robert Johnson Jr.

doi:10.1117/12.2546709

2 March 2020 Hyperspectral imaging using a Linear Variable Filter (LVF) based ultra-compact camera

Thomas D. Rahmlow Jr., William Cote, Robert Johnson Jr.

Proceedings Volume 11287, Photonic Instrumentation Engineering VII; 1128715 (2020) https://doi.org/10.1117/12.2546709
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

Narrow bandwidth linear variable filters (NB-LVF) bring hyperspectral imaging to a wide range of applications in a compact, low weight, rigid structure. The center wavelengths of the narrow bandpass of a linear variable filter changes smoothly in one dimension and are constant in the orthogonal dimension along the surface of the filter. The filter, which is the size of the camera’s detector, is placed directly ahead of the detector and successive frames are acquired as the camera skews or as the camera platform moves across a scene. The full width, half maximum bandwidth of the filter used is 0.8% of the center wavelength and the spectral range is 400 to 900 nm with a wavelength gradient of 50 nm/mm. Examples using the LVF camera for emission spectroscopy, absorption spectroscopy, machine vision, and industrial process control and hyperspectral imaging are presented.

Conference Presentation

Citation Download Citation

Thomas D. Rahmlow Jr., William Cote, and Robert Johnson Jr. "Hyperspectral imaging using a Linear Variable Filter (LVF) based ultra-compact camera", Proc. SPIE 11287, Photonic Instrumentation Engineering VII, 1128715 (2 March 2020); https://doi.org/10.1117/12.2546709

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