Pocket Projectors Possible Thanks to New LED

Pocket Projectors

Although it’s smaller than a pack of cigarettes, Ostar — the latest high-performance light-emitting diode from Osram — is 50 times brighter than comparable predecessor models. Because of its small size (3 cm x 1 cm) and high brightness of 120 lumens (lm), the new LED is ideally suited for use in mini projectors. The LED itself takes up only a fraction of the device’s surface area, generating an extremely bright and uniform light for its size. As a result, the Ostar could play a decisive role in the future development of projectors, ranging from applications for digital cameras and PCs to pocket-sized mini projectors.

Unlike conventional projection systems, a miniature projector equipped with the Ostar module wouldn’t require a warm-up phase or a fan, making the unit exceptionally quiet. And thanks to precisely positioned microchips and a compact layout for all components, the tiny RGB (red-green-blue) light source ensures a very even distribution of light onto the enlarged image. The high-performance LED meets all currently valid standards for projectors, producing a wide range of bright and highly saturated colors.

The ready-to-install mini-LED consists of four thin film chips (one red, one blue and two green), a ceramic carrier for connecting the system to the heat sink, and a number of elements for protecting against overvoltage.

Due to its special beam characteristics, Ostar is also suitable for use in other areas, such as medicine or the automotive sector. In cars, the bright LEDs would be especially useful in headlights and head-up displays that project speedometer data and other information onto windshields.

Source: Siemens


Explore further

Green LED is bright enough for large projector

Citation: Pocket Projectors Possible Thanks to New LED (2005, February 4) retrieved 16 September 2019 from https://phys.org/news/2005-02-pocket-projectors.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
0 shares

Feedback to editors

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more