We report the realization and characterization of a tunable, two-dimensional Talbot array illuminator for mid-infrared (MIR) wavelengths. A phase array, prepared by deposing tindoped indium oxide electrodes on a square-lattice-geometry poled LiNbO3 sample, is

Solid state lighting is becoming a popular light source for color vision experiments. One of the advantages of light emitting diodes (LEDs) is the possibility to shape the target light spectrum according to the experimenter's needs. In this paper, we present a method for creating metameric lights with an LED-based spectrally tunable illuminator. The equipment we use consists of six Gamma Scient...

The paper describes an uneven gel card illumination problem in the gel card image capture device Gelscope 32. The problematic illuminator of the device was analyzed and optimized in such a way, that it illuminated the gel card evenly. Since the illuminator was build using white LEDs, we were able to control the distribution of its luminance by rearranging the LEDs positions. A second order grad...

Frequency diverse array (FDA) radar applies a tiny frequency offset across its adjacent transmitting elements to generate range-angle-dependent beampattern. The increased degrees-of-freedom (DOFs) in range domain can help improve the performance of target detection, localization, and clutter suppression. Passive utilizes uncontrollable external signal as illuminator, which makes it difficult ap...

PURPOSE: This note describes the development of a polarized illuminator system for providing continuous broad beam of very-near infrared (VNIR) radiation to be used in imaging polarimetry applications. This system was developed for field characterization of geo-environmental surfaces (e.g., soil and vegetation), and discrimination of these surfaces from objects of military interest (e.g., unexp...

The 720P outdoor dome camera from Bosch is a professional surveillance cameras that provides high quality HD images for demanding security and surveillance network requirements. This robust dome is a true day/night camera offering excellent performance day or night. The camera is also available with a built-in active infrared illuminator that provides high performance in extreme low-light envir...