We have investigated the use of segmented red, green, and blue LED emitters for use in LCoS projection systems. We find that segmenting the light emitting area has a minimal impact to the efficacy and wall plug efficiency of the die thus validating that these devices could help in significantly reducing the power consumption of LCoS systems by enabling local dimming strategies.
Light sources with digitally addressable elements have many potential uses in the lighting and display space. At the lighting end of the application range, recent developments have resulted in phosphor-converted segmented LEDs and mini-LEDs with single element dimensions of the order of 100 µm. When combined with suitable directional optics and controls this device architecture can generate dynamic light distributions for a wide variety of scenarios. Initially developed for Adaptive Driving Beam (ADB) technology for vehicle headlights, the basic concepts translate to many general lighting applications where they provide a completely new approach to reduced power consumption, improved illuminance uniformity and digitized design and commissioning. At the display end of the range, micro-LED technology with typical pixel sizes of the order of 1 µm to 10 µm promises to reduce power consumption of both direct-view and projection displays, enabling practical wearable AR/VR devices. In this paper, we will present our integral approach to micro- and mini-LED device technology and backplane integration across this application range and describe a prototype light engine designed to evaluate the benefits of this technology in lighting applications.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
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.