Top Ten Challenges For Solid-State Lighting: #1 – Color
Without a doubt, color rendition is a key subject of fascination – or lament? – among advanced lighting users. A lot of confusion reigns on this topic, for at least one good reason: it’s complicated! Having been fairly involved in the field over the past few years, I’d like to kick off some thoughts. The […]
Top Ten Challenges For Solid-State Lighting: #3 – Beam Quality
Recently, I discussed the importance of color consistency at the component level. Today, I want to look at a closely related subject: beam quality. When directional lamps are specified, one often looks at “classic” metrics: beam angle, center-beam candlepower, average chromaticity… Yet, when we visually assess lamps, we are often surprised at the huge variations […]
Top Ten Challenges For Solid-State Lighting: #4 – Color Consistency
In this series, we discuss short-term challenges for the LED industry – avoiding obvious discussion points like cost and focusing instead on more subtle but equally important considerations When discussing the properties of LEDs, the word ‘color’ immediately comes to our minds; and there are so many facets to our perception of color! An important […]
Top Ten Challenges For Solid-State Lighting: #6 – Flicker
In this series, we discuss short-term challenges for the LED industry – avoiding obvious discussion points like cost and focusing instead on more subtle but equally important considerations My last blog post discussed various consequences of driving LEDs, an inherently DC component, with alternative current. Today, I’d like to take a closer look at one […]
Top Ten Challenges For Solid-State Lighting: #5 – White Efficiency
In this series, we discuss short-term challenges for the LED industry – avoiding obvious discussion points like cost and focusing instead on more subtle but equally important considerations All of us have, at some point or another, complained about the use of lumens as a metric – for a variety of reasons. First, lumens are […]
Top Ten Challenges For Solid-State Lighting: #7 – Digital Transition
In this series, we discuss short-term challenges for the LED industry – avoiding obvious discussion points like cost and focusing instead on more subtle but equally important considerations The history of the digital revolution is well-known. After two centuries of innovation, the industrial revolution left us with a legacy of “analog” technologies which transformed humankind; […]
Top Ten Challenges For Solid-State Lighting: #10 – “Confusion”
As members of the industry, we are sometimes surprised by the lukewarm reactions of non-experts around us regarding LED technology. One of the main reasons for this skepticism is confusion when faced with the complexity of understanding LED lighting. Gone are the days when lighting users were offered a simple tradeoff between filament lamps – […]
Top Ten Challenges For Solid-State Lighting: #9 – “Brightness”
In this series, we discuss short-term challenges for the LED industry – going beyond obvious discussion points like cost, and focusing on more subtle but equally important considerations. In the race to improve LED performance, focus is often put on raw lumens. However, as we have discussed in the past week (#10: “Confusion”), generating lumens is […]
Top Ten Challenges For Solid-State Lighting: #8 – “Glare”
In the last series, I discussed the need for higher-brightness LEDs. This may sound surprising to those who complain that LEDs are already “too bright” – by which they usually mean that they have excessive glare. Glare is a general term describing an excessively harsh light to the point of discomfort or disability. The definition […]