IEEE 1789-2015
IEEE Recommended Practices for Modulating Current in High-Brightness LEDs for Mitigating Health Risks to Viewers
standard by IEEE , 06/05/2015
Most Recent
Most Recent
Language:
-
-
Available Formats
- Options
- Availability
- Priced From ( in USD )
-
Available Formats
-
- Immediate download
-
$104.00Members pay $81.00
- Add to Cart
-
- Printed Edition
- Ships in 1-2 business days
-
$127.00Members pay $104.00
- Add to Cart
-
- Printed Edition + PDF
- Immediate download
- $147.00
- Add to Cart
Customers Who Bought This Also Bought
-
IEEE 393-1991
Priced From $142.00 -
IEEE 1573-2021
Priced From $129.00 -
IEEE 1662-2023
Priced From $89.00 -
IEEE 2418.11-2023
Priced From $86.00
About This Item
Full Description
Scope
The scope of this recommended practices document is to Define the concept of modulation frequencies for light-emitting diodes (LEDs) and discuss their applications to LED lighting. - Describe LED lighting applications in which modulation frequencies pose possible health risks to users. - Discuss the dimming of LEDs by modulating the frequency of driving currents/voltage. - Present recommendations for modulation frequencies (flicker) for LED lighting and dimming applications to help protect against known potential adverse health effects.
Purpose
Presently, there are no standards on safe modulating frequencies for high-brightness LEDs. Vendors suggest various driving frequencies—some at low frequencies and others at high frequencies. In the late 1980s and early 1990s, studies showed that office fluorescent lighting with magnetic ballasts modulating at twice the ac line frequency increased the incidence of health-related problems, such as headaches, eyestrain, and, when the lamps were in failure, epileptic seizures. The detrimental effects depend on factors such as brightness, angle of viewing, wavelength, and depth of modulation, among others. The purpose of this document is to describe some possible health risks associated with low-frequency modulation of high-brightness LEDs and provide recommended practices to aid the design of LED driving systems to modulate at benign frequencies in order to help protect against the described health risks.
Abstract
New IEEE Standard - Active.
This document includes a definition of the concept of modulation frequencies for light-emitting diodes (LEDs), a discussion on their applications to LED lighting, a description of LED lighting applications in which modulation frequencies pose possible health risks to users, a discussion of the dimming of LEDs by modulating the frequency of driving currents/voltage, and recommendations for modulation frequencies (flicker) for LED lighting and dimming applications to help protect against known potential adverse health effects.
