Physical constraints on the performance of LED lamp replacements for A-19, PAR-38 and MR-16 configurations

John W. Curran

doi:10.1117/12.860479

19 August 2010 Physical constraints on the performance of LED lamp replacements for A-19, PAR-38 and MR-16 configurations

John W. Curran

Author Affiliations +

Proceedings Volume 7784, Tenth International Conference on Solid State Lighting; 77840J (2010) https://doi.org/10.1117/12.860479
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

Since the introduction of LED technology into the general illumination lighting market, one desired feature has been the ability to replace the luminaire lamp in a similar manner to conventional sources (e.g. screw or plug in). Due to thermal management issues, successfully implementing this feature has proven difficult with many manufacturers simply integrating the LED sources into the luminaire. However, there are LED replacement lamp products on the market that manufacturers claim to be the equivalent of their conventional source counterparts. This paper will examine the relationships between lifetime, light output, source efficacy, thermal management and physical size for three common lamps: the MR-16, the A-19 (standard incandescent shape) and the PAR-38 (standard floodlight shape). The author will evaluate the physical size envelope for the three lamp types. Next, a theoretical model for maximum thermal dissipation to ambient will be determined. Then using data from LED manufacturers, junction temperature limits versus lifetime will be evaluated and used to determine maximum input power. This input power limit combined with manufacturer's data and assumed optical and electrical losses will be used to evaluate potential light output of the lamp and compared to conventional lamp outputs. Upper limits for light output will be determined.

Citation Download Citation

John W. Curran "Physical constraints on the performance of LED lamp replacements for A-19, PAR-38 and MR-16 configurations", Proc. SPIE 7784, Tenth International Conference on Solid State Lighting, 77840J (19 August 2010); https://doi.org/10.1117/12.860479

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

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.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
12 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Light emitting diodes

Lamps

Organic light emitting diodes

Resistance

Manufacturing

Tantalum

Computer aided design

Show All Keywords

Keywords/Phrases

Search In:

Publication Years