Opening Remarks

Modern human existence, as we all know, is primarily carried out indoors. Exposure to natural light is also highly seasonal, even when we avail ourselves of the opportunity to include it in our regular activities. At most, for many in the northern continents, natural light varies from being too feeble to be of value, great enough to be of value, but with outdoor temperatures too cold or hot to tolerate with regularity necessary for good health, or so highly variable throughout the year, that reliance on it as a natural part of our existence is impossible. Further, as we all age, subtle changes take place over time that are not always noticeable at their early stages, but become more of an issue as the years pass. As a result the light we are exposed to indoors, is the bulk of our photonic existence. Read the rest of this entry »

Before we get into this topic, let’s remember that history is filled to overflowing with cries of lighting technology destroying human health. When the incandescent lamp emerged, the gas light industry flooded the market with baloney about its harmful effects (including claims that electric lights caused women to get the vapors), in support of the healthful glow of gas lighting (gag). Fluorescent and HID technologies have been under attack from their very first introduction. It’s quite funny to see now the defense of HPS by LED detractors, as it has been the target for criticism for decades. My advise for the apoplectic LED detractors… take a very deep breath and get over it. Every light source carries with it a compromise, including daylight, with undesirable effects we must do our best to mitigate. I suggest to anyone interested in the processes of new lighting technology: An interesting read on the 60 years it took to get lighting off the gas. That said… Read the rest of this entry »

Seoul Semiconductor has pre-released a series of LEDs it has claimed to produce near sun-like color and SPD at an impressive 97CRI. The marketing message is that this represents a breakthrough in delivering a more natural light to the eye, thus supporting improved health and well-being. Here is their claim, specifically: Read the rest of this entry »

When you spend a lot of time at the controls of word processors, spreadsheets, design software and 3D CAD, you may find that the pedestrian swill keyboards and mouse devices from the office supply and consumer electronics stores inadequate. I know I do. I used to go through a keyboard every year, and suffered from mouse fidelity issues (lack thereof). What I have found a superior approach is to using gaming interfaces. Gamers beat and pound away at their equipment, and subject them to real uses and abuses that office equipment is just not the equal of. Gamers also demand far more precision and consistent response. All good things for design uses. Read the rest of this entry »

The AMA has stepped in to take the stand that warm color LEDs are the only products suitable for street lighting. For anyone interested in this, please read it before assuming you know what it says. There are several factual errors in this document. Most in the lighting design business will see them. The LRC has issued a response to this document.  The IES has also issued its own response.   Again, for those interested, read all of these documents before blowing a gasket and spewing conspiracy theories into the realm, deriding the IES, the LRC or the AMA. It is probably worthwhile also to include the recommendations and statements of the IDA (Dark Skies) as they are the ones who actually initiated the <3000K solution. Read the rest of this entry »

Product development and management has evolved from the days of taking a shot on a hunch. In the days of fabricating products with minimal tooling, the risk of failure was low, and profit reward for success quite good. Who needed product management? Design it, build it, catalog it and get it to the reps and wait for the orders to roll in.

The lighting industry also has a long history of operating with lean management structures, particularly in small organizations. Ownership, Marketing, Engineering, Finance, Design, Engineering, and Sales all have a role in product development, planning and line maintenance. How well product management tasks are accomplished is Read the rest of this entry »

The Mythical Imagery of an Irrelevant and Laggardly Lighting Designer Singularity

The scuttlebutt among select vocal SSL technologists and aggressive LED lighting marketeers derides the “Lighting Design” community as a singularity, and a lot of plonkers, that know nothing about technology, who are so focused on lighting surfaces they ignore the needs of human occupants. Some go as far as accusing Lighting Professionals of gross negligence and malpractice. A few others proffer a theory that conventional lamp manufacturers and their simple technology have propped designers up – that the emergence of LED has exposed them as technical posers, who know nothing of photo-metrics, glare, and visual comfort. Others point to statistics showing “Lighting Designers” are involved in just 5-10% of product decisions to prove them irrelevant. To these antagonists, it must seem a mystery how Lighting Designers have escaped exposure for so many years. Read the rest of this entry »