High illuminance light-emitting diode headlight for medical applications

Ui-Hyung Lee; Jae-hun Jung; Seung Hyun Park; Gye Seon Lee; Young-Gu Ju

doi:10.1117/12.870376

15 November 2010 High illuminance light-emitting diode headlight for medical applications

Ui-Hyung Lee, Jae-hun Jung, Seung Hyun Park, Gye Seon Lee, Young-Gu Ju

Proceedings Volume 7852, LED and Display Technologies; 78520F (2010) https://doi.org/10.1117/12.870376
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

High brightness light emitting diodes have been used to develop high illuminance headlight for medical applications. It provides various advantages such as high illuminance, long life time, reduced infra red light, extended operation time with battery and light weight. A 3 W LED was employed to achieve the high performance medical headlight. The optical design includes two lenses for high energy transmission and high illuminance. The LED headlight shows 42,000 lux with spot diameter of 80 mm at the distance of 300 mm. For comparison purpose, 5 W LED was also used to obtain the high illuminance headlight. However, the large divergence angle and large spot size of the 5 W LED limits the illuminance to 31,000 lux with increased burden on heat dissipation. The thermal images of the heat sinks indicate that the temperature of the headlight using a 3 W LED is below 50 degree C, which is suitable for medical applications.

Citation Download Citation

Ui-Hyung Lee, Jae-hun Jung, Seung Hyun Park, Gye Seon Lee, and Young-Gu Ju "High illuminance light-emitting diode headlight for medical applications", Proc. SPIE 7852, LED and Display Technologies, 78520F (15 November 2010); https://doi.org/10.1117/12.870376

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