Our video explains how screen devices produce the colors we see. We introduce a few information of the transition from black and white TVs to colors ones and ask the audience how many colors screen devices are able to reproduce. With three LEDs we demonstrate the RGB additive method and recording cell phones screens under a microscope we show real devices working. Then, we say that a pixel is able to produce around 17 million colors.
We explain the optical fundamentals -- such as refraction and diffraction -- of CDs, DVDs, and Blu-ray disks using flash animations and live videos.
The presented product consists on some reflective mirrors and laser sources used to reflect the light in many directions..
Interferometry arrangement with 4x microscope objective lens, 650nm HeNe, over photopaper; the reconstruction under a regular light bulb. Tungsten across length slopes: "diffraction efficiency lower curve... signal beams" in representation for average index, OSA published work, Dielectric Holograms.
In this video I briefly discuss the exciting technology behind Liquid Crystal Displays. I begin by talking about their consumer applications. Then, I discuss the polarization of light with a simple demonstration. Finally, I discuss how the twisted nematic effect is used in display technologies to create an array of pixels at varying degrees of illumination.
We present on the video a laser pointer. It’s a modern product permitting to indicate faraway objects. The idea of the video is to show the interior construction of the pointer to the audience. We want to describe the elements the pointer consists of and demonstrate product’s optical scheme. We saw up the frame of the pointer. We separate gradually different optical elements and describe their importance. In fact we see the edge of the gain media and the mirror deposed on it.
Electronic entertainment is the most extended application of video-projectors. However, they are also used at schools, universities and companies around the world as a tool to give information to people in the fastest and straightforward way known to date: visually. In this video we show how digital video-projectors work and how optics is involved in its functioning by showing its main components: light sources, a spatial light modulator and its optical system.
This is a short explanation of how a movie, or game, is stored on a disk, and how a DVD player, or game system, reads that data.
This video contains an explanation of the working principle of a common flatbed scanner. We used schematic diagrams and animations to explain the internal working properly. We described the main parts, with more emphasis on the optical components.