UVC Safety and Compliance for OEMs
Technical Brief By Gary Kardys, CMO Using UVC as a “miracle sterilizer” without accounting for efficacy, safety standards, exposure limits, regulatory constraints, and proper engineering controls is risky. You’ll want to ensure any proposed UVC‑based product — whether for air disinfection, surface sterilization, water purification, medical device sanitization, or OEM integration — is carefully specified, […]
Improved Accuracy and Resolution Using Point Source Emitter Technology
Point Source Emitter Definition LEDs (Light Emitting Diodes), semiconductor light sources, have been introduced and developed for several decades. LEDs are applied in many devices as indicators and general illumination products such as lighting components. As a “green” light source, LEDs can provide long life time and high efficiency light for many applications. However, for […]
The History of LEDs and LED Technology
Light Emitting Diode (LED) is essentially a PN junction semiconductor diode that emits a monochromatic (single color) light when operated in a forward biased direction. The basic structure of an LED consists of the die or light emitting semiconductor material, a lead frame where the die is factually placed, and the encapsulation epoxy which surrounds […]
Measurement of LEDs
LEDs – Dominating Lighting Technology If there were ever any question that LEDs would be such a dominating lighting technology just take a look around. They are virtually everywhere. From standard indicators on stereo equipment, laptops and toys to traffic lights, variable message signs and automotive lighting, LEDs have enjoyed an explosive growth over the […]
Understanding Compound Semiconductor Materials in LEDs
Chemistry When the LED first became commercially available, over 40 years ago, no one really paid much attention to how it was made or what it consisted of chemically. This was in part due to the fact that only a few basic types and colors were available (such as GaP – red and green, and […]
Understanding Ultraviolet LED Applications and Precautions
Ultraviolet light occurs between the visible and x-ray spectrums. The Ultraviolet wavelength range is specified as 10 nm to 400 nm; however, many optoelectronic companies also consider wavelengths as high as 430nm to be in the UV range. Ultraviolet light gets its name due to the “violet” color it produces in the visible portion of […]
LED Component and Assembly Miniaturization
Stay informed with the latest technologies, product releases and innovations in the field of Detectors and LED Emitters. Understanding Forward Current vs. Ambient Temperature The trend towards miniaturization in the electronics world is on-going and is fueled by a variety of factors including the consumer’s desire for portability as well as improved efficiency and reductions […]
Standard LED Application Notes
The features of LED lamps become clear by comparison with tungsten filament incandescent lamps and discharge tubes in their light emitting mechanisms and structures. The following are some qualities of LEDs lamps: Long lifetime – The light emitting phenomenon makes use of the injection light emitted to the P-N junction instead of thermal radiation, therefore, […]
Operating LEDs Statically or Dynamically
An LED can be lit using one of two methods: the static lighting method, in which a constant current is input continually over time, and the dynamic lighting method in which current is fed in continuous ON-OFF pulses. When the ON-OFF intervals are short, dynamic lighting appears to the human eye as static lighting. Figure […]
LED operational and usage precautions
Changes in Characteristics Relating to Temperature (Luminosity, Wavelength, Forward Voltage) The characteristics of an LED lamp change according to the chip temperature (Tj: the temperature of the junction emitting the light). The chip temperature includes both the ambient temperature and the heat emitted by the LED itself. The following text describes typical changes in the […]