Jun 06

Nvidia Near-Eye Light Field Display: Background, Design and History [Video]

Nvidia Near-Eye Light Field Display: Binocular OLED-based prototype (Youtube Screenshot) About a year ago, Nvidia presented a novel head-mounted display that is based on light field technology and offers both depth and refocus capability to the human eye. Their so-called Near-Eye Light Field Display was more a proof of concept, but it’s exciting new technology that solves a number of existing problems with stereoscopic virtual reality glasses.

Nvidia researcher Douglas Lanman recently gave a talk at Augmented World Expo (AWE2014), in which he explained the background and evolution of head-mounted displays and the history and design of Nvidia’s near-eye light field display prototypes: Continue reading

May 27

MIT: Compressive Light Field Projection System for new Glasses-Free 3D Displays

Illustration of concept. A light field projector, build using readily-available optics and electronics, emits a 4D light field onto a screen that expands the field of view so that observers on the other side of the screen can enjoy glasses-free 3D entertainment. No mechanically moving parts are used in either the projector or the screen. Additionally, the screen is completely passive, potentially allowing for the system to be scaled to significantly larger dimensions. (picture: MIT Media Lab, Camera Culture Group)Today’s glasses-free 3D displays ususally consist of dozens of devices, which makes them not only very complex, but also bulky, energy-consuming and costly. At SIGGRAPH 2014 conference, Gordon Wetzstein and Matthew Hirsch from the MIT’s Camera Culture Group presented a new approach to glasses-free 3D that is based on projectors and optical technology found in Keplerian telescopes. Their novel method for “Compressive Light Field Projection” consists of a single device without mechanically moving parts.
Because it’s relatively cheap to build with today’s optics and electronics, the presented prototype could pave the way for cinema-scale glasses-free 3D displays. Continue reading

May 20

Interview: Lytro CEO Jason Rosenthal about Light Field Technology and the Illum

Interview: Lytro CEO Jason Rosenthal about Light Field Technology and the Illum (Youtube screenshot) Last week, Lytro CEO Jason Rosenthal gave a video interview to Netzwelt Live on Google Hangouts.
First, Rosenthal talked about his own background, the basics of light field technology and its advantages over conventional optical systems. Then, he answered some questions regarding Lytro’s advance from a gimmick-style proof of concept to a semiprofessional camera system (Lytro Illum), the Illum’s target audience, and some of the camera’s features. Continue reading

May 17

Flashback: Inventor Steven Sasson Talks About The World’s First Digital Camera

Flashback: Steven Sasson Talks About The World’s First Digital Camera (vimeo screengrab) Digital cameras are anywhere and everywhere today – from massive professional DSLR cameras to tiny modules integrated into the widest range of consumer electronics. Turn the clock back about 40 years, and you’re at the advent of digital imaging.

The first digital camera was designed by Steven Sasson in the Kodak Apparatus Division research lab (Rochester, New York) in 1975. It weighed 3.6 kg (8 pounds) and contained a Fairchild CCD 201 image sensor (one of the first CCDs available) with an image resolution of 100 x 100 pixels, or 0.01 megapixels. Continue reading