Technical Papers & Presentations

Application Guide: Optical Calculations for LED Applications

Back of the envelope calculations are useful at the beginning of a project for estimating LED type and count. Techniques for calculating optical quantities and estimating LED count will be presented for some typical applications.

Optical Calculations for LED Applications Guide

Slidecast PDF: Optical Calculations for LED Applications Guide

Technical Note: Optical Solution for a U.S. Type 3 Medium Streetlight

A study showing how OSLON SSL LEDs can be used to produce a Type 3 Medium beam pattern in a streetlight application, something not normally possible using off-the-shelf LED components.

Optical Solution for a U.S. Type 3 Medium Streetlight Technical Note


Slidecast: Optical Modeling of the LED Environment
This video informs viewers about using commonly-available software to model their proposed LED system and its effects on the lighting environment.

Application Guide: Thermal Measurement Guidelines for LEDs

One of the most critical design parameters in an LED illumination system is the system’s ability to draw heat away from the LED package. High operating temperatures at the LED junction adversely affect the performance of the LED, resulting in color shifts and decreased light output and lifetime for the LED package. Therefore, monitoring the LED function temperature is paramount for the overall system performance.

Thermal Measurement Guidelines for LEDs Application Guide

Webinar Recast: Why is Thermal Management Important for LEDs?
In this webinar recast Joe Jablonski, Application Engineering Manager of OSRAM Opto Semiconductors, answers why thermal management is needed for today’s generation of LEDs.

Slidecast: PAR 38 Reference Design by OSRAM Opto Semiconductors

The PAR 38 reference design incorporates the latest High CRI LEDs from OSRAM Opto Semiconductors, particularly suited for premium indoor lighting applications, where natural color rendering is required.

Slidecast PDF: PAR 38 Reference Design from OSRAM Opto Semiconductors

Slidecast: OSLON Family of LEDs by OSRAM Opto Semiconductors

Product overview of OSRAM Opto Semiconductor’s OSLON family of LEDs for general lighting applications. The high power, small footprint and long lifetime of the OSLON LEDs make them ideal for a variety of retrofit, home, shop, office, hospitality, industrial and outdoor applications. The OSLON family of LEDs includes the OSLON SSL 80 degree, OSLON SSL 150 degree and OSLON Square LEDs.

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Slidecast: DURIS Family of LEDs by OSRAM Opto Semiconductors

Product overview of OSRAM Opto Semiconductors’ DURIS family of LEDs for general lighting applications. Whatever your application needs — the DURIS family can meet them. For example the DURIS E, is the perfect solution for cost-conscious applications. The DURIS P 5 and DURIS P 5 colors are ideal for high-quality, professional indoor and outdoor lighting applications. DURIS S 5, the mid-power LED, stands for flexibility and efficiency. And DURIS S 8 is a revolutionary compact high-power LED for indoor illumination, including directional and omnidirectional retrofit lamps.

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Slidecast: Brilliant Mix

At OSRAM Opto Semiconductors, the name “Brilliant Mix” stands for a new, highly efficient concept for generating white light with a high color rendering index for general lighting applications with light-emitting diodes (LEDs).

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Slidecast: LED Lighting for Horticultural Applications

This video explores LED based horticultural solutions using OSRAM Opto Semiconductors’ Golden DRAGON Plus and OSLON SSL Hyper Red and Deep Blue LEDs. It details photosynthesis and the advantage of LEDs, while also describing specific LED products for horticultural applications.

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Slidecast: Flashlight Reference Design

This reference design incorporates OSRAM Opto Semiconductors’ OSLON SSL LEDs, a custom driver and a custom reflector optic. LEDs in flashlight applications have many advantages. For any battery operated device, efficiency is the key factor that determines the battery run time. Also, small form factor, directional light sources are preferred in flashlights to make the finished product small and compact. LEDs from OSRAM Opto Semiconductors are efficient, small in size and ideal for flashlight applications.

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Slidecast: It’s All About the White (LEDs)

LEDs as a light source make sense today in a variety of different applications. This presentation explores the four primary reasons.

Video: Fine White Binning

How does the white color of LEDs fit into the landscape of traditional light sources? OSRAM addresses that topic with it’s Fine White Binning. Find out how it guarantees an industry best-in-class color uniformity.

OSRAM LED Golden Dragon Plus Chart


Application Guide: Optical Considerations for LED Selection

When choosing an LED for an application, its optical properties must first be considered. Properties such as lumen output, intensity distribution, and source size need to be suited to the optical system of the application. This document will provide guidelines for LED selection given a particular optical system.

Optical Considerations for LED Selection Application Guide


Application Guide: Current Distribution in Parallel LED Strings

Many LED applications require more than one LED in a system. When multiple LEDs are used in a system, the LEDs can be arranged in series, parallel, or series- parallel configurations. Due to regulatory requirements (especially in Class II environments) there is always a limitation as to how many LEDs can be connected in series. One of the standard practices to overcome this issue is to have multiple parallel strings of series LEDs that are driven from a single constant current source. This Application Guide describes the issues and solutions that may be encountered when multiple strings are driven from a constant current source (CC source).

Current Distribution in Parallel LED Strings Application Guide

OSRAM LED Light Chart

Application Guide: Power Factor Correction (PFC) Basics

Power Factor, in simple terms, is a number between zero and one that represents the ratio of the real power to apparent power. Real power (P), measured in watts, is the capacity of the circuit for performing work in a particular time. Apparent power is the product of input current and voltage of a circuit and/or system. Since real power is actually performing work, in an ideal case, real power would be equal to apparent power. Thus, a circuit with a low power factor will use higher currents to transfer a given quantity of real power than a circuit with a high power factor. In practical application, there will be combinations of two or three different power elements in a circuit or system.

Power Factor Correction (PFC) Basics Application Guide