Plessey Integrates Optics into GaN-on-Silicon CSP LEDs

Plessey announced that it has developed a patented technology for Chip Scale Optics (CSO) based on its award winning GaN-on-Silicon MaGIC ™ LEDs.  Chip Scale Optics permits design of light emission angles down to ten degrees direct from the LED.  Having the primary optics on-chip eliminates the cost of primary optics typically found in packaged LEDs and chip-on-board modules.  Furthermore, it significantly lowers the cost and provides for far greater design freedom for secondary optics within a luminaire.  The first off applications include retail spot lighting, hospitality lighting, high and low bays, street lighting and stadium lighting.  It is estimated that Plessey’s chip scale optics will halve the cost of these lighting applications.

A rendered image of Plessey's Chip Scale Optics which enables better beam control of LED chips. (Photo courtesy of Plessey)

Dr. Keith Strickland, Plessey’s CTO, said, “The CSO technology was originally designed as an on-chip phosphor dam. We realised that the original growth silicon, normally sacrificed during LED production, could be shaped and used to form mechanically robust, MEMS-type features on the emitting surface of a vertical LED.  The degree of collimation is controlled in part by the mechanical dimensions of these on chip structures and we have demonstrated emission angles as low as 10 degrees.  The IC industry has used silicon for over 60 years and can be readily fashioned into many shapes and patterns.  We have created silicon MEMS features in a variety of other applications and can manage to incorporate a complex primary optical design on the chip.”

Dr. Samir Mezouari, Plessey’s Principal Optical Designer, added, “High-end lighting designers do not count lumens per Watt as the primary figure of merit for LEDs.  A lighting designer aims to illuminate a particular surface area.  Chip Scale Optics can significantly simplify luminaire designs by forming symmetrically collimated beams with narrow angles or asymmetric beams to form elongated far field light profiles.  Schemes to collimate monochromatic light at the LED level have been developed before but no-one has previously collimated white light at the LED level.”

Plessey will be exhibiting an LED demonstrator of the Chip Scale Optics at LuxLive, UK largest lighting show, in November 2015 and samples will be available in Q1 2016.

For further information and datasheets, please visit www.plesseysemiconductors.com or email enquiries@plesseysemi.com

Disclaimers of Warranties
1. The website does not warrant the following:
1.1 The services from the website meets your requirement;
1.2 The accuracy, completeness, or timeliness of the service;
1.3 The accuracy, reliability of conclusions drawn from using the service;
1.4 The accuracy, completeness, or timeliness, or security of any information that you download from the website
2. The services provided by the website is intended for your reference only. The website shall be not be responsible for investment decisions, damages, or other losses resulting from use of the website or the information contained therein<
Proprietary Rights
You may not reproduce, modify, create derivative works from, display, perform, publish, distribute, disseminate, broadcast or circulate to any third party, any materials contained on the services without the express prior written consent of the website or its legal owner.

Tokushima, Japan – 17 June 2022: Nichia, the world’s largest LED manufacturer and inventor of high-brightness blue and white LEDs, announces the addition of the Direct Mountable Chip Series (Part Number: NVSWE21A-V1) to the portfol... READ MORE

DURHAM, N.C.--(BUSINESS WIRE)--Cree LED, an SGH company (Nasdaq: SGH), announced today the launch of XLamp® Element G LEDs, delivering a new product class with unmatched light output and efficiency for LEDs of this size. The... READ MORE