Variable-intensity large-area illuminator for photodetectors and image sensors

Miklos Racz; Janos P. Makai

doi:10.1117/12.158573

15 October 1993 Variable-intensity large-area illuminator for photodetectors and image sensors

Miklos Racz, Janos P. Makai

Proceedings Volume 2022, Photodetectors and Power Meters; (1993) https://doi.org/10.1117/12.158573
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

Photometric or radiometric characterization of detectors or detector arrays requires uniform, stable illuminance or irradiance. For the measurement of linearity or spectral linearity the illuminance/irradiance level should be variable without changing either the spectral or angular distribution of the beam. A realization of a set-up using a glass rod as homogenizer is shown. The achieved uniformity is better than +/- 2% over a 40 mm diameter area. The irradiance and illuminance are over 3 mW/cm² and 20 klux respectively. Suitable choosing the lamp current the set-up produces the spectral distribution of a standard illuminant A recommended by CIE for the measurements of image sensors.

Citation Download Citation

Miklos Racz and Janos P. Makai "Variable-intensity large-area illuminator for photodetectors and image sensors", Proc. SPIE 2022, Photodetectors and Power Meters, (15 October 1993); https://doi.org/10.1117/12.158573

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